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@CONFERENCE{A.2002,
author = {A. Eid, S. Rashad and A. Farag,},
title = {A General Purpose Platform for 3D Reconstruction from Sequence of
Images},
booktitle = {Proceedings of 5th International Conference on Information Fusion,
Annapolis, MD, Vol. 1, pp. 425-413, July 2002.},
year = {2002},
abstract = {A number of approaches have been proposed in the literature for reconstruction
of 3-D objects from sequence of images. Yet, very few studies have
been reported on the quantification/validation of the accuracy of
these reconstructions. In addition, no design has been reported
for a generic vision platform that can allow various modality imaging.
The purpose of this paper is two folds: 1) propose a vision platform
that lend itself for acquisition of calibrated sequence of images,
and concurrently obtain a direct 3-D reconstruction by laser scanning;
and 2) develop and implement different approaches for 3-D reconstructions
from sequence of images. 3-D reconstructions will be evaluated against
the 3-D scanning generated from a laser scanner. Validation of the
reconstructions is made by pairwise comparison with the 3-D scanning
results. Preliminary studies with the proposed vision platform show
a good promise for its use in the validation of various 3-D reconstructions,
registration and data fusion.},
owner = {Administrator},
timestamp = {2006.04.19},
}
@CONFERENCE{Abate2005,
author = {Abate, A.F.; Nappi, M.; Ricciardi, S.; Sabatino, G.;},
title = {Fast 3D face recognition based on normal map},
booktitle = {Image Processing, 2005. ICIP 2005. IEEE International Conference
on volume 2, 11-14 Sept. 2005 Page(s):II - 946-9},
year = {2005},
abstract = {This paper presents a 3D face recognition method aimed to biometric
applications. The proposed method compares any two faces represented
as 3D polygonal surfaces through their corresponding normal map,
a bidimensional array which stores local curvature (mesh normals)
as the pixel's RGB components of a color image. The recognition
approach, based on the computation of a difference map resulting
from the comparison of normal maps, is simple yet fast and accurate.
A weighting mask, automatically generated for each subject using
a set of expression variations, improves the robustness to a broad
range of facial expressions. First results show the effectiveness
of the method on a database of 3D faces featuring different genders,
ages and expressions.},
owner = {Administrator},
timestamp = {2006.04.19},
}
@ARTICLE{Agarwal2006,
author = {Agarwal, A.; Triggs, B.;},
title = {Recovering 3D human pose from monocular images},
journal = {Pattern Analysis and Machine Intelligence, IEEE Transactions},
year = {2006},
volume = {28},
pages = {44 - 58},
abstract = {We describe a learning-based method for recovering 3D human body pose
from single images and monocular image sequences. Our approach requires
neither an explicit body model nor prior labeling of body parts
in the image. Instead, it recovers pose by direct nonlinear regression
against shape descriptor vectors extracted automatically from image
silhouettes. For robustness against local silhouette segmentation
errors, silhouette shape is encoded by histogram-of-shape-contexts
descriptors. We evaluate several different regression methods: ridge
regression, Relevance Vector Machine (RVM) regression, and Support
Vector Machine (SVM) regression over both linear and kernel bases.
The RVMs provide much sparser regressors without compromising performance,
and kernel bases give a small but worthwhile improvement in performance.
The loss of depth and limb labeling information often makes the
recovery of 3D pose from single silhouettes ambiguous. To handle
this, the method is embedded in a novel regressive tracking framework,
using dynamics from the previous state estimate together with a
learned regression value to disambiguate the pose. We show that
the resulting system tracks long sequences stably. For realism and
good generalization over a wide range of viewpoints, we train the
regressors on images resynthesized from real human motion capture
data. The method is demonstrated for several representations of
full body pose, both quantitatively on independent but similar test
data and qualitatively on real image sequences. Mean angular errors
of 4{\hbox{-}}6^\circ are obtained for a variety of walking motions.},
owner = {Administrator},
timestamp = {2006.04.19},
}
@ARTICLE{Aldur2005,
author = {Muhammet M Aldur},
title = {{C}reating computer aided 3{D} model of spleen and kidney based on
{V}isible {H}uman {P}roject.},
journal = {Saudi Med J},
year = {2005},
volume = {26},
pages = {51--56},
number = {1},
month = {Jan},
abstract = {OBJECTIVE: To investigate the efficacy of computer aided 3-dimensional
(3D) reconstruction technique on visualization and modeling of gross
anatomical structures with an affordable methodology applied on
the spleen and kidney. METHODS: From The Visible Human Project Dataset
cryosection images, developed by the National Library of Medicine,
the spleen and kidney sections were preferred to be used due to
their highly distinct contours. The software used for the reconstruction
were SurfDriver 3.5.3 for Mac and Cinema 4D XL version 7.1 for Mac
OS X. This study was carried out in May 2004 at the Department of
Anatomy, Hacettepe University, Ankara, Turkey. RESULTS: As a result
of this study, it is determined that these 2 programs could be effectively
used both for 3D modeling of the mentioned organs and volumetric
analyses on these models. It is also seen that it is possible to
hold the physical models of these gross anatomical digital ones
with stereolithography technique by means of the data exchange file
format provided by the program and present such images as anaglyph.
CONCLUSION: SurfDriver 3.5.3 for Mac OS and Cinema 4 DXL version
7.1 for Mac OS X can be used effectively for reconstruction of gross
anatomical structures from serial parallel sections with distinct
contours such as spleen and kidney and the animation of models.
These software constitute a highly effective way of getting volumetric
calculations, spatial relations and morphometrical measurements
of reconstructed structures.},
keywords = {Bacteriophage mu, Computer Simulation, DNA Transposable Elements,
Electron, Energy-Filtering Transmission Electron, Humans, Imaging,
Kidney, Microscopy, Non-U.S. Gov't, Protein Structure, Research
Support, Scanning Transmission, Spleen, Tertiary, Three-Dimensional,
Transposases, Visible Human Project, 15756353},
owner = {Administrator},
pii = {'},
pmid = {15756353},
timestamp = {2006.04.20},
}
@ARTICLE{Alessio2006,
author = {Adam Alessio and Ken Sauer and Paul Kinahan},
title = {{A}nalytical reconstruction of deconvolved {F}ourier rebinned {PET}
sinograms.},
journal = {Phys Med Biol},
year = {2006},
volume = {51},
pages = {77--93},
number = {1},
month = {Jan},
abstract = {Fully 3D PET data are often rebinned into 2D data sets in order to
avoid computationally intensive fully 3D reconstruction. Then, conventional
2D reconstruction techniques are employed to obtain images from
the rebinned data. In a common scenario, 2D filtered back projection
(FBP) is applied to Fourier rebinned (FORE) data. This approach
is suboptimal because FBP is based on an idealized mathematical
model of the data and cannot account for the statistical structure
of data and noise. FORE data contain some blur in all three dimensions
in comparison to conventional 2D PET data. In this work, we propose
methods for approximating this blur in the sinogram domain due to
FORE through its point spread function (PSF). We also explore simple
methods for deconvolving the rebinned data with this PSF to restore
it to a more ideal state prior to FBP. Our results show that deconvolution
of the approximate transaxial PSF yields no improvement. When low
image noise levels are required for detection tasks, the deconvolution
of the axial PSF does not provide adequate resolution or quantitative
benefits to justify its application. When accurate quantitation
is required and higher noise levels are acceptable, the deconvolution
of the axial PSF leads to considerable gains (30\%) in accuracy
over conventional FORE+FBP at matched noise levels.},
doi = {10.1088/0031-9155/51/1/006},
keywords = {Adenosine, Adult, Algorithms, Anatomic, Animals, Blood Volume, Clitoris,
Comparative Study, Computer Simulation, Computer-Aided Design, Computer-Assisted,
Connective Tissue, Contrast Media, Coronary Circulation, Coronary
Stenosis, Echocardiography, Extramural, Female, Finite Element Analysis,
Fluorocarbons, Histamine H1 Antagonists, Humans, Hyaenidae, Image
Processing, Imaging, In Vitro, Loratadine, Male, Mice, Models, Movement,
N.I.H., Non-P.H.S., Non-Sedating, Non-U.S. Gov't, Penis, Phantoms,
Programming Languages, Rabbits, Radiotherapy Planning, Research
Support, Respiration, Robotics, Software, Subtraction Technique,
Swine, Three-Dimensi, Three-Dimensional, Tomography, U.S. Gov't,
Urogenital Surgical Procedures, User-Computer Interface, Ventricular
Pressure, Video-Assisted Surgery, X-Ray Computed, onal, 16357432},
owner = {Administrator},
pii = {S0031-9155(06)96838-9},
pmid = {16357432},
timestamp = {2006.04.20},
url = {http://dx.doi.org/10.1088/0031-9155/51/1/006},
}
@ARTICLE{Andrey2005,
author = {Philippe Andrey and Yves Maurin},
title = {{F}ree-{D}: an integrated environment for three-dimensional reconstruction
from serial sections.},
journal = {J Neurosci Methods},
year = {2005},
volume = {145},
pages = {233--244},
number = {1-2},
month = {Jun},
abstract = {Three-dimensional (3D) reconstruction is a powerful tool to investigate
complex neuroanatomical organizations. 3D models are often generated
by piling up registered segmentations carried out on serial sections
labeled by histological means. However, these models suffer limitations
(incompleteness and lack of statistical representativity), which
can be overcome by model averaging and fusion. These operations
require an appropriate reconstruction environment allowing the simultaneous
processing of several data sets. This paper describes the first
release of Free-D, a software designed for the reconstruction of
3D models generated from stacks of serial sections, in the perspective
of model averaging and fusion. A unique graphical user interface
integrates the 3D reconstruction tools. Several large stacks (tens
of gigabytes) including hundreds of images having heterogeneous
characteristics (size, resolution, depth, etc.) can be simultaneously
processed, thus complying to most encountered experimental situations.
This first version of Free-D constitutes the required environment
for the future integration of the averaging and fusion algorithms
currently developed in our group and illustrated here with preliminary
results.},
doi = {10.1016/j.jneumeth.2005.01.006},
keywords = {Algorithms, Animals, Artificial Intelligence, Biological, Cadaver,
Ce, Cell Survival, Cochlear Implants, Coin Lesion, Computer Graphics,
Computer Simulation, Computer-Assisted, Female, Hearing Loss, Humans,
Image Processing, Imaging, Male, Models, Neurons, Non-U.S. Gov't,
Programming Languages, Pulmonary, Radiographic Image Enhancement,
Radiographic Image Interpretation, Rats, Research Support, Software,
Spinal Cord, Spiral Ganglion, Surgery, Temporal Bone, Three-Dimensional,
User-Computer Interface, ll Count, 15922039},
owner = {Administrator},
pii = {S0165-0270(05)00016-6},
pmid = {15922039},
timestamp = {2006.04.20},
url = {http://dx.doi.org/10.1016/j.jneumeth.2005.01.006},
}
@CONFERENCE{Avanaki2004,
author = {Avanaki, A.N.; Hamidzadeh, B.; Kossentini, F.; Ward, R.;},
title = {Multi-reference object pose indexing and 3-D modeling from video
using volume feedback},
booktitle = {Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International
Symposium on
Volume 3, 23-26 May 2004 Page(s):III-893 - III-896 Vol.3},
year = {2004},
abstract = {A system for 3-D reconstruction of a rigid object from monocular video
sequences is introduced. Initially an object pose is estimated in
each image by locating similar (unknown) texture assuming flat depth
map for all images. Shape-from-silhouette as stated in R. Szeliski
(1993) is then applied to construct a 3-D model which is used to
obtain better pose estimates using a model-based method. Before
repeating the process by building a new 3-D model, pose estimates
are adjusted to reduce error by maximizing a quality measure for
shape-from-silhouette volume reconstruction. Translation of the
object in the input sequence is compensated in two stages. The volume
feedback is terminated when the updates in pose estimates become
small. The final output is a pose index (the last set of pose estimates)
and a 3-D model of the object. Good performance of the system is
shown by experiments on a real video sequence of a human head. Our
method has the following advantages: (1) No model is assumed for
the object. (2) Feature points are neither detected nor tracked,
thus no problematic feature matching or lengthy point tracking are
required. (3) The method generates a high level pose index for the
input images, these can be used for content-based retrieval. Our
method can also be applied to 3-D object tracking in video.},
journal = {. Multi-reference object pose indexing and 3-D modeling from video
using volume feedback
Avanaki, A.N.; Hamidzadeh, B.; Kossentini, F.; Ward, R.;
Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International
Symposium on
Volume 3, 23-26 May 2004 Page(s):III-893 - III-896 Vol.3
Digital Object Identifier 10.1109/ISCAS.2004.1328891},
owner = {Administrator},
timestamp = {2006.04.19},
}
@CONFERENCE{Baback2003,
author = {Baback Moghaddam, Jinho Lee, Hanspeter Pfister, Raghu Machiraju,},
title = {Model-Based 3D Face Capture with Shape-from-Silhouettes},
booktitle = {IEEE International Workshop on Analysis and Modeling of Faces and
Gestures},
year = {2003},
abstract = {We present a method for 3D face acquisition using a set or sequence
of 2D binary silhouettes. Since silhouette images depend only on
the shape and pose of an object, they are immune to lighting and/or
texture variations (unlike feature or texture-based shape-from-correspondence).
Our prior 3D face model is a linear combination of "eigenheads"
obtained by applying PCA to a training set of laser-scanned 3D faces.
These shape coefficients are the parameters for a near-automatic
system for capturing the 3D shape as well as the 2D texture-map
of a novel input face. Specifically, we use back-projection and
a boundary-weighted XOR-based cost function for binary silhouette
matching, coupled with a probabilistic "downhill-simplex" optimization
for shape estimation and refinement. Experiments with a multicamera
rig as well as monocular video sequences demonstrate the advantages
of our 3D modeling framework and ultimately, its utility for robust
face recognition with built-in invariance to pose and illumination.},
owner = {Administrator},
timestamp = {2006.04.19},
}
@ARTICLE{Barros2006,
author = {Ricardo Machado Leite de Barros and Tiago Guedes Russomanno and René
Brenzikofer and Pascual Jovino Figueroa},
title = {{A} method to synchronise video cameras using the audio band.},
journal = {J Biomech},
year = {2006},
volume = {39},
pages = {776--780},
number = {4},
abstract = {This paper proposes and evaluates a novel method for synchronisation
of video cameras using the audio band. The method consists in generating
and transmitting an audio signal through radio frequency for receivers
connected to the microphone input of the cameras and inserting the
signal in the audio band. In a software environment, the phase differences
among the video signals are calculated and used to interpolate the
synchronous 2D projections of the trajectories. The validation of
the method was based on: (1) Analysis of the phase difference changes
as a function of time of two video signals. (2) Comparison between
the values measured with an oscilloscope and by the proposed method.
(3) Estimation of the improvement in the accuracy in the measurements
of the distance between two markers mounted on a rigid body during
movement applying the method. The results showed that the phase
difference changes in time slowly (0.150 ms/min) and linearly, even
when the same model of cameras are used. The values measured by
the proposed method and by oscilloscope showed equivalence (R2=0.998),
the root mean square of the difference between the measurements
was 0.10 ms and the maximum difference found was 0.31 ms. Applying
the new method, the accuracy of the 3D reconstruction had a statistically
significant improvement. The accuracy, simplicity and wide applicability
of the proposed method constitute the main contributions of this
work.},
doi = {10.1016/j.jbiomech.2004.12.025},
keywords = {Algorithms, Amino Acid Substitution, Anatomic, Bacteriophage P22,
Biophysics, Capsid, Capsid Proteins, Cardiac Surgical Procedures,
Cardiovascular, Comparative Study, Computer Simulation, Coronary
Angiography, Cross-Linking Reagents, Cysteine, Extramural, Humans,
Mass, Minimally Invasive, Models, Molecu, N.I.H., Non-U.S. Gov't,
Protein Binding, Protein Subunits, Research Support, Spectrum Analysis,
Surgical Procedures, Threonine, Virus Assembly, lar, 16439248},
owner = {Administrator},
pii = {S0021-9290(05)00040-0},
pmid = {16439248},
timestamp = {2006.04.20},
url = {http://dx.doi.org/10.1016/j.jbiomech.2004.12.025},
}
@ARTICLE{Bazin2005,
author = {Pierre-Louis Bazin and Jean-Marc Vézien},
title = {{I}ntegration of geometric elements, {E}uclidean relations, and motion
curves for parametric shape and motion estimation.},
journal = {IEEE Trans Pattern Anal Mach Intell},
year = {2005},
volume = {27},
pages = {1960--1976},
number = {12},
month = {Dec},
abstract = {This paper presents an approach to shape and motion estimation that
integrates heterogeneous knowledge into a unique model-based framework.
We describe the observed scenes in terms of structured geometric
elements (points, line segments, rectangles, 3D corners) sharing
explicitly Euclidean relationships (orthogonality, parallelism,
colinearity, coplanarity). Camera trajectories are represented with
adaptative models which account for the regularity of usual camera
motions. Two different strategies of automatic model building lead
us to reduced models for shape and motion estimation with a minimal
number of parameters. These models increase the robustness to noise
and occlusions, improve the reconstruction, and provide a high-level
representation of the observed scene. The parameters are optimally
computed within a sequential Bayesian estimation procedure that
gives accurate and reliable results on synthetic and real video
imagery.},
keywords = {Adenosine, Adult, Algorithms, Anatomic, Animals, Artificial Intelligence,
Automated, Blood Volume, Clitoris, Comparative Study, Computer Simulation,
Computer-Aided Design, Computer-Assisted, Connective Tissue, Contrast
Media, Coronary Circulation, Coronary Stenosis, Echocardiography,
Extramural, Female, Finite Element Analysis, Fluorocarbons, Histamine
H1 Antagonists, Humans, Hyaenidae, Image Enhancement, Image Interpretation,
Image Processing, Imaging, In Vitro, Information Storage and Retrieval,
Loratadine, Male, Mice, Models, Motion, Movement, N.I.H., Non-P.H.S.,
Non-Sedating, Non-U.S. Gov't, Pattern Recognition, Penis, Phantoms,
Programming Languages, Rabbits, Radiotherapy Planning, Research
Support, Respiration, Robotics, Software, Statistical, Subtraction
Technique, Swine, Three-Dimensi, Three-Dimensional, Tomography,
U.S. Gov't, Urogenital Surgical Procedures, User-Computer Interface,
Ventricular Pressure, Video-Assisted Surgery, X-Ray Computed, onal,
16355662},
owner = {Administrator},
pmid = {16355662},
timestamp = {2006.04.20},
}
@ARTICLE{Behr2006,
author = {Michel Behr and Lionel Thollon and Pierre-Jean Arnoux and Thierry
Serre and Stéphane Berdah and Patrick Baque and Christian Brunet},
title = {3{D} reconstruction of the diaphragm for virtual traumatology.},
journal = {Surg Radiol Anat},
year = {2006},
pages = {1--6},
month = {Feb},
abstract = {This study lies within the scope of passive road safety, and more
particularly injury mechanisms of the abdominal area. The finite
element modeling, which makes it possible to simulate a road accident
and to observe the possible bone fractures or internal tissue injuries,
allows large projections in the comprehension of injury mechanisms.
However, the digital models already available and used in accidentology
do not offer as one very simplified description of the diaphragm,
as well for its geometry as for its bracing aspect and the modifications
that this could induce in the behavior of abdominal organs and vessels
at impact. In order to develop an accurate model of diaphragm for
road safety research, a 3D reconstruction was performed, based on
a sitting post-mortem Human subject sections. The resulting geometry
was then turned into a segmented mechanical component (using the
finite element method) and included in a full human model already
available. The result is a valuable tool to improve the knowledge
of injury mechanisms involved in car crashes at the abdominal level.},
doi = {10.1007/s00276-006-0080-5},
keywords = {Algorithms, Anatomic, Biophysics, Cardiac Surgical Procedures, Cardiovascular,
Comparative Study, Computer Simulation, Coronary Angiography, Humans,
Minimally Invasive, Models, Non-U.S. Gov't, Research Support, Surgical
Procedures, 16470342},
owner = {Administrator},
pmid = {16470342},
timestamp = {2006.04.20},
url = {http://dx.doi.org/10.1007/s00276-006-0080-5},
}
@CONFERENCE{Beraldin2002,
author = {Beraldin, J.-A.; Guidi, G.; Ciofi, S.; Atzeni, C.;},
title = {Improvement of metric accuracy of digital 3D models through digital
photogrammetry. A case study: Donatello's Maddalena},
booktitle = {3D Data Processing Visualization and Transmission, 2002. Proceedings.
First International Symposium on19-21 June 2002 Page(s):758 - 761},
year = {2002},
abstract = {In spite of an undoubted richness of information
produced by 3D optical technologies, in some cases, the
method for generating a digital model from single 3D
acquisitions involves the propagation of errors. These
errors limit the overall metric accuracy attainable with
such procedure. This happens when small 3D images are
assembled together in order to model a large object. The
authors present a procedure by which the metric
reliability of the 3D model, obtained through iterative
alignments of single range maps, can be guaranteed to an
acceptable level. For this purpose, non-impeding optical
targets were specifically designed for placement around
the object. These are measured using a close range digital
photogrammetry technique and by the 3D range camera
system. From these measurements, transformation
matrices have been calculated. Each matrix allows for the
roto-translation (pose) of the 3D images from the local
coordinate system of the range camera to an accurate
global coordinate system determined by the digital
photogrammetric procedure.},
owner = {Administrator},
timestamp = {2006.04.19},
}
@ARTICLE{Bjaalie2006,
author = {Jan G Bjaalie and Trygve B Leergaard and Christian Pettersen},
title = {{M}icro3{D}: computer program for three-dimensional reconstruction
visualization, and analysis of neuronal populations and barin regions.},
journal = {Int J Neurosci},
year = {2006},
volume = {116},
pages = {515--540},
number = {4},
month = {Apr},
abstract = {This article presents a computer program, Micro3D, designed for 3-D
reconstruction, visualization, and analysis of coordinate-data (points
and lines) recorded from serial sections. The software has primarily
been used for studying shapes and dimension of brain regions (contour
line data) and distributions of cellular elements such as neuronal
cell bodies or axonal terminal fields labeled with tract-tracing
techniques (point data). The tissue elements recorded could equally
well be labeled with use of other techniques, the only requirement
being that the data collected are saved as x,y,z coordinates. Data
are typically imported from image-combining computerized microscopy
systems or image analysis systems, such as Neurolucida (MicroBrightField,
Colchester, VT) or analySIS (Soft Imaging System, Gmbh, Münster,
Germany). System requirements are a PC running LINUX. Reconstructions
in Micro3D may be rotated and zoomed in real-time, and submitted
to perspective viewing and stereo-imaging. Surfaces are re-synthesized
on the basis of stacks of contour lines. Clipping is used for defining
section-independent subdivisions of the reconstruction. Flattening
of curved sheets of points layers (e.g., neurons in a layer) facilitates
inspection of complicated distribution patterns. Micro3D computes
color-coded density maps. Opportunities for translation of data
from different reconstructions into common coordinate systems are
also provided. This article demonstrates the use of Micro3D for
visualization of complex neuronal distribution patterns in somatosensory
and auditory systems. The software is available for download on
conditions posted at the NeSys home pages (http://www.nesys.uio.no/)
and at The Rodent Brain Workbench (http://www.rbwb.org/).},
keywords = {16596747},
owner = {Administrator},
pmid = {16596747},
timestamp = {2006.04.20},
}
@ARTICLE{Canero2002,
author = {Canero, C.; Vilarino, F.; Mauri, J.; Radeva, P.;},
title = {Predictive (un)distortion model and 3-D reconstruction by biplane
snakes},
journal = {Medical Imaging, IEEE Transactions},
year = {2002},
volume = {21},
pages = {1188 - 1201},
abstract = {This paper is concerned with the 3D reconstruction
of coronary vessel centerlines and with how distortion of X-ray
angiographic images affects it. Angiographies suffer from pincushion
and other geometrical distortions, caused by the peripheral
concavity of the Image Intensifier (II) and the non-linearity of
electronic acquisition devices. In routine clinical practice, where
a
Field-Of-View (FOV) of 17-23 cm is commonly used for the acquisition
of coronary vessels, this distortion introduces a positional
error of up to 7 pixels for an image matrix size of512 x512 and
a FOV of 17 cm. This error increases with the size of the FOV.
Geometrical distortions have a significant effect on the validity
of the 3D reconstruction of vessels from these images. We show
how this effect can be reduced by integrating a predictive model
of (un)distortion into the biplane snakes formulation for 3D reconstruction.
First, we prove that the distortion can be accurately
modeled using a polynomial for each view. Also, we show that
the estimated polynomial is independent of focal length, but not of
changes in anatomical angles, as the II is influenced by the earth’s
magnetic field. Thus, we decompose the polynomial into two components,
namely the steady and the orientation-dependent component.
We determine the optimal polynomial degree for each component,
which is empirically determined to be 5 for the steady component,
and 3 for the orientation-dependent one. This fact simplifies
the prediction of the orientation-dependent polynomial, since
the number of polynomial coefficients to be predicted is lower. The
integration of this model into the biplane snakes formulation enables
us to avoid image unwarping, which deteriorates image quality
and therefore complicates vessel centerline feature extraction.
Moreover, we improve the biplane snake behavior when dealing
with wavy vessels, by means of using Generalized Gradient Vector
Flow (GGVF). Our experiments show that the proposed methods
Flow (GGVF). Our experiments show that the proposed methods
in this paper decrease up to 88% the reconstruction error obtained
when geometrical distortion effects are ignored. Tests on imaged
phantoms and real cardiac images are presented as well.},
owner = {Administrator},
timestamp = {2006.04.19},
}
@ARTICLE{Castro-Pareja2003,
author = {Castro-Pareja, C.R.; Jagadeesh, J.M.; Shekhar, R.;},
title = {FAIR: a hardware architecture for real-time 3-D image registration},
journal = {Information Technology in Biomedicine, IEEE Transactions},
year = {2003},
volume = {7},
pages = {426 - 434},
abstract = {Mutual information-based image registration, shown to be effective
in registering a range of medical images, is a computationally expensive
process, with a typical execution time on the order of minutes on
a modern single-processor computer. Accelerated execution of this
process promises to enhance efficiency and therefore promote routine
use of image registration clinically. This paper presents details
of a hardware architecture for real-time three-dimensional (3-D)
image registration. Real-time performance can be achieved by setting
up a network of processing units, each with three independent memory
buses: one each for the two image memories and one for the mutual
histogram memory. Memory access parallelization and pipelining,
by design, allow each processing unit to be 25 times faster than
a processor with the same bus speed, when calculating mutual information
using partial volume interpolation. Our architecture provides superior
per-processor performance at a lower cost compared to a parallel
supercomputer.},
owner = {Administrator},
timestamp = {2006.04.19},
}
@ARTICLE{Cerveri2005a,
author = {P. Cerveri and N. Lopomo and A. Pedotti and G. Ferrigno},
title = {{D}erivation of centers and axes of rotation for wrist and fingers
in a hand kinematic model: methods and reliability results.},
journal = {Ann Biomed Eng},
year = {2005},
volume = {33},
pages = {402--412},
number = {3},
month = {Mar},
abstract = {In the field of 3D reconstruction of human motion from video, model-based
techniques have been proposed to increase the estimation accuracy
and the degree of automation. The feasibility of this approach is
strictly connected with the adopted biomechanical model. Particularly,
the representation of the kinematic chain and the assessment of
the corresponding parameters play a relevant role for the success
of the motion assessment. In this paper, the focus is on the determination
of the kinematic parameters of a general hand skeleton model using
surface measurements. A novel method that integrates nonrigid sphere
fitting and evolutionary optimization is proposed to estimate the
centers and the functional axes of rotation of the skeletal joints.
The reliability of the technique is tested using real movement data
and simulated motions with known ground truth 3D measurement noise
and different ranges of motion (RoM). With respect to standard nonrigid
sphere fitting techniques, the proposed method performs 10-50\%
better in the best condition (very low noise and wide RoM) and over
100\% better with physiological artifacts and RoM. Repeatability
in the range of a couple of millimeters, on the localization of
the centers of rotation, and in the range of one degree, on the
axis directions is obtained from real data experiments.},
keywords = {Adult, Algorithms, Animals, Articular, Artificial Intelligence, Automated,
Biological, Biomechanics, Cadaver, Ce, Cell Survival, Cochlear Implants,
Coin Lesion, Comparative Study, Computer Graphics, Computer Simulation,
Computer-Assisted, Face, Female, Finger Joint, Hearing Loss, Humans,
Image Enhancement, Image Interpretatio, Image Interpretation, Image
Processing, Imaging, Information Storage and Retrieval, Lighting,
Linear Models, Male, Models, Movement, Neurons, Non-P.H.S., Non-U.S.
Gov't, Numerical Analysis, P.H.S., Pattern Recognition, Photography,
Photometry, Programming Languages, Pulmonary, Radiographic Image
Enhancement, Radiographic Image Interpretation, Range of Motion,
Rats, Reproducibility of Results, Research Support, Rotation, Sensitivity
and Specificity, Signal Processing, Software, Spinal Cord, Spiral
Ganglion, Statistical, Subtraction Technique, Surgery, Temporal
Bone, Three-Dimensional, U.S. Gov't, User-Computer Interface, Video
Recording, Wrist Joint, ll Count, n, 15868731},
owner = {Administrator},
pmid = {15868731},
timestamp = {2006.04.20},
}
@CONFERENCE{Chao2005,
author = {Chao Li; Barreto, A.; Jing Zhai; Chin, C.;},
title = {Exploring face recognition by combining 3D profiles and contours},
booktitle = {SoutheastCon, 2005. Proceedings. IEEE},
year = {2005},
abstract = {Most of the face recognition research performed in the past used 2D
intensity images obtained by a photographic camera as the data format
for processing, but the algorithms developed based on 2D images
are not robust to changes of the conditions in which the images
are taken, like the illumination of the environment and the orientation
of the subject. With the development of 3D imaging techniques, 3D
face recognition is becoming a natural choice to overcome the shortcomings
of 2D face recognition, since a 3D face image records the exact
geometry of the subject, invariant to illumination and the orientation
changes. In this paper, a new algorithm for automatic face recognition,
based on the characterization of faces by their contours and profiles,
is proposed. Experiments show that the central vertical profile
and the contour are both very useful features for face recognition.
When combined, better recognition rates can be obtained than just
using any of them alone. The performance of the algorithm is also
compared with that of the traditional principal component analysis
method using a database of 80 subjects. Results show that our method,
which characterizes a face through its central vertical profile
and contour, can achieve better results and requires less computational
power in processing this test database.},
owner = {Administrator},
timestamp = {2006.04.19},
}
@ARTICLE{Ciobanu2006,
author = {Octavian Ciobanu},
title = {{T}he use of a {C}omputer {A}ided {D}esign ({CAD}) environment in
3{D} reconstruction of anatomic surfaces.},
journal = {Stud Health Technol Inform},
year = {2006},
volume = {119},
pages = {102--104},
abstract = {Paper presents an evaluation and comparison of two different types
of software for generating a 3D model from medical imaging data:
first, a dedicated 3D reconstruction Mimics interface, by Materialise
and second, an engineering CAD (a Solid Works and AutoCAD) interface.
Advantages and limitations of both software types are outlined and
there some observations for 3D reconstruction of anatomic surfaces
are presented.},
keywords = {Algorithms, Anatomic, Animals, Clitoris, Comparative Study, Computer-Aided
Design, Computer-Assisted, Connective Tissue, Extramural, Female,
Finite Element Analysis, Histamine H1 Antagonists, Humans, Hyaenidae,
Image Processing, Imaging, Loratadine, Male, Mice, Models, N.I.H.,
Non-Sedating, Penis, Programming Languages, Research Support, Robotics,
Software, Three-Dimensional, Urogenital Surgical Procedures, User-Computer
Interface, Video-Assisted Surgery, 16404025},
owner = {Administrator},
pmid = {16404025},
timestamp = {2006.04.20},
}
@ARTICLE{Daul2005a,
author = {Christian Daul and Pierre Graebling and Alain Tiedeu and Didier Wolf},
title = {3-{D} reconstruction of microcalcification clusters using stereo
imaging: algorithm and mammographic unit calibration.},
journal = {IEEE Trans Biomed Eng},
year = {2005},
volume = {52},
pages = {2058--2073},
number = {12},
month = {Dec},
abstract = {The three-dimensional (3-D) shape of microcalcification clusters is
an important indicator in early breast cancer detection. In fact,
there is a relationship between the cluster topology and the type
of lesion (malignant or benign). This paper presents a 3-D reconstruction
method for such clusters using two 2-D views acquired during standard
mammographic examinations. For this purpose, the mammographic unit
was modeled using a camera with virtual optics. This model was used
to calibrate the acquisition unit and then to reconstruct the clusters
in the 3-D space after microcalcification segmentation and matching.
The proposed model is hardware independent since it is suitable
for digital mammographic units with different geometries and with
various physical acquisition principles. Three-dimensional reconstruction
results are presented here to prove the validity of the method.
Tests were first performed using a phantom with a well-known geometry.
The latter contained X-ray opaque glass balls representing microcalcifications.
The positions of these balls were reconstructed with a 16.25-microm
mean accuracy. This very high inherent algorithm accuracy is more
than enough for a precise 3-D cluster representation. Further validation
tests were carried out using a second phantom including a spherical
cluster. This phantom was built with materials simulating the behavior
of both mammary tissue and microcalcifications toward Xrays. The
reconstructed shape was effectively spherical. Finally, reconstructions
were carried out for real clusters and their results are also presented.},
keywords = {Algorithms, Animals, Aortic Rupture, Arabidopsis, Artificial Intelligence,
Automated, Biol, Biological, Breast Neoplasms, Calcinosis, Calibration,
Carcinoma, Cattle, Cell Membrane, Cell Shape, Cell Size, Comp, Computer-Assisted,
Connective Tissue, Crystalline, Cystoscopy, Diagnostic Techniques,
Elasticity, Electron, Endoscopy, Female, Flowers, Fluorescence,
Golgi Apparatus, Green Fluorescent Proteins, Humans, Image Enhancement,
Image Interpretation, Image Processing, Imaging, Immunohistochemistry,
Lens, Magnetic Resonance Angiography, Magnetic Resonance Imaging,
Mammography, Mechanical, Meristem, Microscopy, Microtomy, Models,
Neoplasms, Non-U.S. Gov't, Nonpenetrating, Ophthalmological, Optic
Disk, Pattern Recognition, Phantoms, Photogrammetry, Photography,
Plant Shoots, Precancerous Conditions, Radiographic Image Enhancement,
Radiographic Image Interpretation, Reproducibility of Results, Research
Support, Scanning, Sensitivity and Specificity, Shear Strength,
Stress, Three-Dimensional, Tomography, Ultrasonic Therapy, Ureteral
Diseases, Urethral Diseases, Urologic Diseases, Video, Wounds, X-Ray
Computed, ogical, uter-Assisted, 16366229},
owner = {Administrator},
pmid = {16366229},
timestamp = {2006.04.20},
}
@ARTICLE{Delorme2003,
author = {Delorme, S.; Petit, Y.; de Guise, J.A.; Labelle, H.; Aubin, C.-E.;
Dansereau, J.;},
title = {Assessment of the 3-D reconstruction and high-resolution geometrical
modeling of the human skeletal trunk from 2-D radiographic images},
journal = {Biomedical Engineering, IEEE Transactions},
year = {2003},
volume = {50},
pages = {989 - 998},
abstract = {This paper presents an in vivo validation of a method for the three-dimensional
(3-D) high-resolution modeling of the human spine, rib cage, and
pelvis for the study of spinal deformities. The method uses an adaptation
of a standard close-range photogrammetry method called direct linear
transformation to reconstruct the 3-D coordinates of anatomical
landmarks from three radiographic images of the subject's trunk.
It then deforms in 3-D 1-mm-resolution anatomical primitives (reference
bones) obtained by serial computed tomography-scan reconstruction
of a dry specimen. The free-form deformation is calculated using
dual kriging equations. In vivo validation of this method on 40
scoliotic vertebrae gives an overall accuracy of 3.3 /spl plusmn/
3.8 mm, making it an adequate tool for clinical studies and mechanical
analysis purposes.},
owner = {Administrator},
timestamp = {2006.04.19},
}
@MISC{eid-fusion,
author = {Ahmed Eid and Aly Farag},
title = {On the Fusion of 3-D Reconstruction Techniques},
url = {citeseer.ist.psu.edu/704175.html},
}
@CONFERENCE{Farag2005,
author = {Farag, A.; Eid, A.;},
title = {A silhouette-contour based 3-D registration methodology as a pre-evaluation
step of 3-D reconstruction techniques},
booktitle = {Image Processing, 2005. ICIP 2005. IEEE International Conference
on
Volume 3, 11-14 Sept. 2005 Page(s):II - 505-8},
year = {2005},
abstract = {Data registration is a crucial step in performance evaluation procedures
that aim at localizing errors in given measured data. Under the
performance evaluation topic, the probably corrupted measured data
should be accurately registered/aligned to the ground truth data
such that the registration process would not affect the accuracy
of the consequent evaluation steps. To cope with this problem, another
registration methodology that can go beyond the conventional ones
should be used. Here we propose a novel approach for 3-D data registration.
The performance of the approach is totally independent of the measured
data set. The key advantage of this approach is that it keeps the
registration process away from being affected by the probably corrupted
data sets, hence it permits confidential evaluation results.},
owner = {Administrator},
timestamp = {2006.04.19},
}
@ARTICLE{Fristrup2004,
author = {C. W. Fristrup and T. Pless and J. Durup and M. B. Mortensen and
H. O. Nielsen and C. P. Hovendal},
title = {{A} new method for three-dimensional laparoscopic ultrasound model
reconstruction.},
journal = {Surg Endosc},
year = {2004},
volume = {18},
pages = {1601--1604},
number = {11},
month = {Nov},
abstract = {BACKGROUND: Laparoscopic ultrasound is an important modality in the
staging of gastrointestinal tumors. Correct staging depends on good
spatial understanding of the regional tumor infiltration. Three-dimensional
(3D) models may facilitate the evaluation of tumor infiltration.
The aim of the study was to perform a volumetric test and a clinical
feasibility test of a new 3D method using standard laparoscopic
ultrasound equipment. METHODS: Three-dimensional models were reconstructed
from a series of two-dimensional ultrasound images using either
electromagnetic tracking or a new 3D method. The volumetric accuracy
of the new method was tested ex vivo, and the clinical feasibility
was tested on a small series of patients. RESULTS: Both electromagnetic
tracked reconstructions and the new 3D method gave good volumetric
information with no significant difference. Clinical use of the
new 3D method showed accurate models comparable to findings at surgery
and pathology. CONCLUSIONS: The use of the new 3D method is technically
feasible, and its volumetrically, accurate compared to 3D with electromagnetic
tracking.},
doi = {10.1007/s00464-003-9282-7},
keywords = {Algorithms, Artificial Intelligence, Biological, Cadaver, Ce, Cell
Survival, Cochlear Implants, Coin Lesion, Computer Graphics, Computer
Simulation, Computer-Assisted, Female, Hearing Loss, Humans, Image
Processing, Imaging, Male, Models, Non-U.S. Gov't, Programming Languages,
Pulmonary, Radiographic Image Enhancement, Radiographic Image Interpretation,
Research Support, Software, Spiral Ganglion, Surgery, Temporal Bone,
Three-Dimensional, User-Computer Interface, ll Count, 15931487},
owner = {Administrator},
pmid = {15931487},
timestamp = {2006.04.20},
url = {http://dx.doi.org/10.1007/s00464-003-9282-7},
}
@ARTICLE{Gao2005,
author = {Jianxin Gao and Wei Xu and Jianping Geng},
title = {{U}se of shadow-speckle correlation method for 3{D} tooth model reconstruction.},
journal = {Int J Prosthodont},
year = {2005},
volume = {18},
pages = {436--437},
number = {5},
abstract = {This study presents a method of using shadow-speckle correlation to
reconstruct a 3-dimensional (3D) tooth model. Compared with other
methods based on laser or optical geometric measurements, the shadow-speckle
method overcomes their limitations by using a digital image correlation
to reconstruct a 3D tooth model. Using plaster models 4 times the
normal tooth size showed that the accuracy of the reconstructed
model was estimated at roughly 30 microm, which potentially could
be used in direct intraoral applications.},
keywords = {Animals, Blood Vessels, Cardiovascular System, Computer-Assisted,
Confocal, Dental Models, Fluorescence, Humans, Image Processing,
Imaging, Microscopy, Non-U.S. Gov't, Research Support, Three-Dimensional,
Zebrafish, 16220812},
owner = {Administrator},
pmid = {16220812},
timestamp = {2006.04.20},
}
@ARTICLE{Guidi2004,
author = {Guidi, G.; Beraldin, J.-A.; Atzeni, C.;},
title = {High-accuracy 3D modeling of cultural heritage: the digitizing of
Donatello's "Maddalena"},
journal = {Image Processing, IEEE Transactions},
year = {2004},
volume = {13},
pages = {370 - 380},
abstract = {Three-dimensional digital modeling of heritage works of art through
optical scanners, has been demonstrated in recent years with results
of exceptional interest. However, the routine application of three-dimensional
(3D) modeling to heritage conservation still requires a systematic
investigation of a number of technical problems. The paper describes
the process of acquiring a 3D digital model of the Maddalena by
Donatello, a wooden statue representing one of the major masterpieces
of the Italian Renaissance which was swept away by the Florence
flood of 1966, and subsequently restored. The paper reports all
the steps of the acquisition procedure, from the project planning
to the solution of the various problems due to range camera calibration
and to optically noncooperative material. Since the scientific focus
is centered on the 3D model's overall dimensional accuracy, a methodology
for its quality control is described. Such control has demonstrated
how, in some situations, the ICP-based alignment can lead to incorrect
results. To circumvent this difficulty, we propose an alignment
technique based on the fusion of ICP (iterative closest point) with
close-range digital photogrammetry and a noninvasive procedure in
order to generate a final accurate model. Detailed results are presented,
demonstrating the improvement of the final model, and how the proposed
sensor fusion ensures a prespecified level of accuracy.},
owner = {Administrator},
timestamp = {2006.04.19},
}
@ARTICLE{Guidi2003a,
author = {Guidi, G.; Beraldin, J.-A.; Ciofi, S.; Atzeni, C.;},
title = {Fusion of range camera and photogrammetry: a systematic procedure
for improving 3-D models metric accuracy},
journal = {Systems, Man and Cybernetics, Part B, IEEE Transactions},
year = {2003},
volume = {33},
pages = {667 - 676},
abstract = {The generation of three-dimensional (3-D) digital models produced
by optical technologies in some cases involves metric errors. This
happens when small high-resolution 3-D images are assembled together
in order to model a large object. In some applications, as for example
3-D modeling of Cultural Heritage, the problem of metric accuracy
is a major issue and no methods are currently available for enhancing
it. The authors present a procedure by which the metric reliability
of the 3-D model, obtained through iterative alignments of many
range maps, can be guaranteed to a known acceptable level. The goal
is the integration of the 3-D range camera system with a close range
digital photogrammetry technique. The basic idea is to generate
a global coordinate system determined by the digital photogrammetric
procedure, measuring the spatial coordinates of optical targets
placed around the object to be modeled. Such coordinates, set as
reference points, allow the proper rigid motion of few key range
maps, including a portion of the targets, in the global reference
system defined by photogrammetry. The other 3-D images are normally
aligned around these locked images with usual iterative algorithms.
Experimental results on an anthropomorphic test object, comparing
the conventional and the proposed alignment method, are finally
reported.},
owner = {Administrator},
timestamp = {2006.04.19},
}
@ARTICLE{,
author = {Guotao Wang, Caroline Merrill, Jie-Hua Zhao, Steven K. Groothuis
and Paul S. Ho},
title = {Packaging Effects on Reliability of Cu/Low-k Interconnects},
journal = {IEEE TRANSACTIONS ON DEVICE AND MATERIALS RELIABILITY},
year = {2003},
volume = {3},
number = {4},
month = {DECEMBER},
abstract = {Abstract—Chip-packaging interaction is becoming a critical reliability
issue for Cu/low- chips during assembly into a plastic flip-chip
package. With the traditional TEOS interlevel dielectric being replaced
by much weaker low- dielectrics, packaging induced interfacial delamination
in low- interconnects has been widely observed, raising serious
reliability concerns for Cu/lowchips. In a flip-chip package, the
thermal deformation of the package can be directly coupled into
the Cu/low- interconnect structure inducing large local deformation
to drive interfacial crack formation. In this paper, we summarize
experimental and modeling results from studies performed in our
laboratory to investigate the chip-package interaction and its impact
on lowinterconnect
reliability. We first review the experimental techniques for measuring
thermal deformation in a flip-chip package and interfacial fracture
energy for low- interfaces. Then results from three-dimensional
finite element analysis (FEA) based on a multilevel submodeling
approach in combination with high-resolution moiré interferometry
to investigate the chip-package interaction for low- interconnects
are discussed. Packaging induced crack driving forces for relevant
interfaces in Cu/lowstructures are deduced and compared with corresponding
interfaces in Cu/TEOS and Al/TEOS structures to assess the effect
of ILD on packaging reliability. Our results indicate that packaging
assembly can significantly impact wafer-level reliability causing
interfacial delamination to become a serious reliability concern
for Cu/low- structures.},
owner = {Administrator},
pdf = {C:\Documents and Settings\Administrator\Desktop\Seminario\biblio\01261725.pdf},
timestamp = {2006.04.27},
}
@ARTICLE{Hagen2005,
author = {G. Hagen and P. G. Lindgren and L. Jangland and P. Magnusson and
A. Magnusson},
title = {{A}rtifacts in 3{D} rotational angiography: an experimental study.},
journal = {Acta Radiol},
year = {2005},
volume = {46},
pages = {32--36},
number = {1},
month = {Feb},
abstract = {PURPOSE: To investigate artifacts in three-dimensional rotational
angiography (3D-RA) in an experimental model and to evaluate which
parameters influence their distribution. MATERIAL AND METHODS: 3D-RA
was carried out in a circular vessel phantom filled with contrast
medium. Two different rotational angulations were used: 160 degrees
causing 64 images and 180 degrees causing 90 or 120 images. The
images were transferred to one workstation for reconstruction of
axial slices and then to another workstation for 3D reconstructions.
The 3D reconstructions were compared with standardized threshold
settings. RESULTS: The artifacts occurred where the vessel had a
longer path parallel to the rotation plane and became increasingly
pronounced when the threshold level was raised. The artifacts decreased
in size when rotation angle and number of projections were increased.
CONCLUSION: The quality of the 3D reconstructions from RA was degraded
by beam-hardening and sampling artifacts. The sampling artifacts
were diminished by increasing both the rotation angle and the number
of projections. The distortions in the 3D reconstructions caused
by beam-hardening remain to be resolved. The threshold values also
had a considerable influence on the 3D reconstructions.},
keywords = {, Adult, Algorithms, Angiography, Animals, Arthroplasty, Articular,
Artifacts, Artificial Intelligence, Automated, Biological, Biomechanics,
Bone Substitutes, Cadaver, Cardiovascular, Ce, Cell Survival, Cochlear
Implants, Coin Lesion, Comparative Study, Computer Graphics, Computer
Simulation, Computer-Aided Design, Computer-Assisted, Contrast Media,
Durapatite, Equipment Failure Analysis, Face, Female, Finger Joint,
Finite Element Analysis, Hearing Loss, Hip, Hip Joint, Humans, Image
Enhancement, Image Interpretatio, Image Interpretation, Image Processing,
Imaging, Information Storage and Retrieval, Joint Instability, Lighting,
Linear Models, Male, Metals, Models, Movement, Neurons, Non-P.H.S.,
Non-U.S. Gov't, Numerical Analysis, P.H.S., Pattern Recognition,
Phantoms, Photography, Photometry, Programming Languages, Prosthesis
Failure, Pulmonary, Radiographic Image Enhancement, Radiographic
Image Interpretation, Range of Motion, Rats, Replacement, Reproducibility
of Results, Research Support, Rotation, Sensitivity and Specificity,
Signal Processing, Software, Spinal Cord, Spiral Ganglion, Statistical,
Subtraction Technique, Surgery, Temporal Bone, Three-Dimensional,
Tissue Engineering, Tomography, U.S. Gov't, User-Computer Interface,
Video Recording, Wrist Joint, X-Ray Computed, ll Count, n, 15841737},
owner = {Administrator},
pmid = {15841737},
timestamp = {2006.04.20},
}
@ARTICLE{Hu2006,
author = {Y. Hu and G. H. Glover},
title = {{P}artial-k-space acquisition method for improved {SNR} efficiency
and temporal resolution in 3{D} f{MRI}.},
journal = {Magn Reson Med},
year = {2006},
month = {Apr},
abstract = {Previous studies have shown the relative importance of physiological
noise and thermal noise in 2D MR images. Since physiological noise
is proportional to the signal, it can be the dominant component
at the center of k-space. In this study we demonstrate that the
signal-to-noise ratio (SNR) efficiency and temporal resolution for
3D functional MRI (fMRI) are increased by the use of a partial-k-space
acquisition method. In partial-k-space methods, the high-spatial-frequency
components are doubled in amplitude during reconstruction, resulting
in twice as much noise from those components. However, in sum these
contributions are relatively small compared to those at the low
spatial frequencies, where physiological noise is dominant. Therefore,
the effect on the final MR images is almost negligible due to the
square summation rule. Thus, the partial-k-space 3D method sacrifices
much less SNR than is expected from the thermal noise model, and
the SNR efficiency is increased compared to a full-k-space acquisition
since more time frames can be collected for the same scan time.
Accordingly, the temporal resolution can be increased in 3D acquisitions
because only partial coverage of k-space is necessary. Experimental
results confirm that more activation with a higher average t-score
is detected by this method. Magn Reson Med, 2006. (c) 2006 Wiley-Liss,
Inc.},
doi = {10.1002/mrm.20877},
keywords = {16598724},
owner = {Administrator},
pmid = {16598724},
timestamp = {2006.04.20},
url = {http://dx.doi.org/10.1002/mrm.20877},
}
@ARTICLE{Huang2006a,
author = {Yan Huang and Mbonda Siewe and Sundararajan V Madihally},
title = {{E}ffect of spatial architecture on cellular colonization.},
journal = {Biotechnol Bioeng},
year = {2006},
volume = {93},
pages = {64--75},
number = {1},
month = {Jan},
abstract = {The spatial cell-material interaction remains vital issue in forming
biodegradable scaffolds in Tissue Engineering. In this study, to
understand the influence of spatial architecture on cellular behavior,
2D and 3D chitosan scaffolds of 50-190 kD and >310 kD MW were synthesized
through air drying and controlled rate freezing/lypohilization technique,
respectively. In addition, chitosan was emulsified with 19, 76,
and 160 kD 50:50 poly lactide-co-glycolide (PLGA) using 1,2-Dimyristoyl-sn-Glycero-3-Phosphocholine
(DMPC) as stabilizer. 2D and 3D scaffolds were formed by air drying
and lyophilization as before. Tensile and compressive properties
of films and scaffolds were analyzed in wet conditions at 37 degrees
C. Alterations in the cell spreading, proliferation, and cytoskeletal
organization of human umbilical vein endothelial cells (HUVECs)
and mouse embryonic fibroblasts (MEFs) were studied. These results
showed that the formed 3D chitosan scaffolds had interconnected
open pore architecture (50-200 microm size). HUVECs and MEFs had
reduced spreading areas and circular morphology on 2D chitosan membranes
compared with 3D chitosan scaffolds. The fluorescence photomicrographs
for actin (using Alexa Fluor 488 phalloidin) and cytoplasm staining
(using carboxyfluorescein diacetate-succinimidyl ester) demonstrated
that the cells spread within 3D chitosan matrix. 2D and 3D emulsified
chitosan and chitosan/PLGA scaffolds reduced the spreading of HUVECs
and MEFs even further. Proliferation results, analyzed via MTT-Formazan
assay and BrdU uptake assay, correlated with the spreading characteristics.
The reductions in cell spreading area on emulsified surfaces were
not detrimental to the viability and endocytic activity but to proliferation.
The observed alterations in cellular colonization are in part due
to the substrate stiffness and surface topography. In summary, these
results suggest a significant influence of spatial architecture
on cellular colonization.},
doi = {10.1002/bit.20703},
keywords = {Adolescent, Adult, Aged, Anti-Bacterial Agents, Atomic Force, Braces,
Calcium Channels, Caloric Tests, Case-Control Studies, Cell Culture
Techniques, Cell Proliferation, Cells, Cervical Vertebrae, Child,
Chitosan, Comparative Study, Computer-Assisted, Cultured, Cytoplasmic
and Nuclear, Endothelial Cells, English Abstract, Extracellular
Matrix, Female, Gentamicins, Head, Humans, Image Processing, Infant,
Male, Meniere's Disease, Microscopy, Middle Aged, Non-U.S. Gov't,
Nystagmus, Optokinetic, Polyesters, Protein Conformation, Receptors,
Research Support, Scapula, Scoliosis, Solutions, Thoracic Vertebrae,
Tissue Engineering, Tomography, Treatment Outcome, Umbilical Veins,
Vestibular Diseases, Vestibular Function Tests, Vestibule, Vibration,
Video Recording, Water, X-Ray Computed, 16142800},
owner = {Administrator},
pmid = {16142800},
timestamp = {2006.04.21},
url = {http://dx.doi.org/10.1002/bit.20703},
}
@ARTICLE{Irarrazaval2005,
author = {Pablo Irarrazaval and Redha Boubertakh and Reza Razavi and Derek
Hill},
title = {{D}ynamic three-dimensional undersampled data reconstruction employing
temporal registration.},
journal = {Magn Reson Med},
year = {2005},
volume = {54},
pages = {1207--1215},
number = {5},
month = {Nov},
abstract = {Dynamic 3D imaging is needed for many applications such as imaging
of the heart, joints, and abdomen. For these, the contrast and resolution
that magnetic resonance imaging (MRI) offers are desirable. Unfortunately,
the long acquisition time of MRI limits its application. Several
techniques have been proposed to shorten the scan time by undersampling
the k-space. To recover the missing data they make assumptions about
the object's motion, restricting it in space, spatial frequency,
temporal frequency, or a combination of space and temporal frequency.
These assumptions limit the applicability of each technique. In
this work we propose a reconstruction technique based on a weaker
complementary assumption that restricts the motion in time. The
technique exploits the redundancy of information in the object domain
by predicting time frames from frames where there is little motion.
The proposed method is well suited for several applications, in
particular for cardiac imaging, considering that the heart remains
relatively still during an important fraction of the cardiac cycle,
or joint imaging where the motion can easily be controlled. This
paper presents the new technique and the results of applying it
to knee and cardiac imaging. The results show that the new technique
can effectively reconstruct dynamic images acquired with an undersampling
factor of 5. The resulting images suffer from little temporal and
spatial blurring, significantly better than a sliding window reconstruction.
An important attraction of the technique is that it combines reconstruction
and registration, thus providing not only the 3D images but also
its motion quantification. The method can be adapted to non-Cartesian
k-space trajectories and nonuniform undersampling patterns.},
doi = {10.1002/mrm.20671},
keywords = {80 and over, Adipose Tissue, Adult, Aged, Alcohol Withdrawal Seizure,
Alcoholism, Algorithms, Anatomic, Angiography, Ankle Joint, Anterior
Cerebral Artery, Artificial Intelligence, Biological, Biomechanics,
Breast Neoplasms, Carcinoma, Cine, Comparative Study, Computer Simulation,
Computer-Assisted, Conformal, Corpus Callosum, Digital Subtraction,
Dose Fractionation, Drug Administration Schedule, Echo-Planar Imaging,
English Abstract, Extramural, Feasibility Studies, Female, Forecasting,
Health Care, Humans, Hypertension, Hypertensive, Image Enhancement,
Image Interpretation, Image Processing, Imagi, Imaging, Information
Storage and Retrieval, Injections, Intracranial Aneurysm, Intracranial
Hemorrhage, Kidney Neoplasms, Lung Neoplasms, Lymph Nodes, Lymphatic
Metas, Magnetic Resonance Angiography, Magnetic Resonance Imaging,
Male, Mediastinum, Middle Aged, Models, Movement, Multivariate Analysis,
Muscle, N.I.H., Neoplasm Staging, Non-Small-Cell Lung, Non-U.S.
Gov't, P.H.S., Phonetics, Positron-Emission Tomography, Principal
Component Analysis, Probability, Prostate, Prostatic Neoplasms,
Quality Assurance, ROC Curve, Radiopharmaceuticals, Radiotherapy,
Radiotherapy Planning, Reference Standards, Reproducibility of Results,
Research Support, Sample Size, Sensitivity and Specificity, Skeletal,
Software Validation, Sound Spectrography, Statistical, Subtraction
Technique, Three-Dimensional, Time Factors, Tomography, Tongue,
Transducers, Treatment Outcome, U.S. Gov't, Ultrasonography, User-Computer
Interface, Water, Whole Body Imaging, Whole-Body Counting, X-Ray
Computed, ng, s, tasis, 16187276},
owner = {Administrator},
pmid = {16187276},
timestamp = {2006.04.20},
url = {http://dx.doi.org/10.1002/mrm.20671},
}
@ARTICLE{Irene2005,
author = {Irene Cheng; Boulanger, P.;},
title = {Feature extraction on 3-D TexMesh using scale-space analysis and
perceptual evaluation},
journal = {Circuits and Systems for Video Technology, IEEE Transactions},
year = {2005},
volume = {15},
pages = {1234 - 1244},
abstract = {Efficient online visualization of three-dimensional (3-D) textured
models is essential for a variety of applications including not
only games and e-commerce, but also heritage and medicine. To visualize
3-D objects online, it is necessary to quickly adapt both mesh and
texture to the available computational or network resources. Earlier
research showed that after reaching a minimum required mesh density,
high-resolution texture has more impact on human perception than
a denser mesh. Given limited bandwidth, an important issue is how
to extract features that best represent the original object, and
how to allocate resources between mesh and texture data to achieve
optimal perceptual quality. In this paper, we propose a textured
mesh (TexMesh) model, which applies scale-space analysis and perceptual
evaluation to extract 3-D features for textured mesh simplification
and transmission. Texture data is divided into fragments to facilitate
quality and bandwidth adaptation. Texture quality assignment is
based on feature point distribution. Online transmission is based
on statistics gathered during preprocessing, which are stored in
a priority queue and lookup tables. Quality of service requested
by a client site can be met by applying an efficient adaptive algorithm
to ensure optimal use of the specified time and available bandwidth,
and at the same time preserving satisfactory quality. Our TexMesh
framework integrates feature extraction, mesh simplification, texture
reduction, bandwidth adaptation, and perceptual evaluation into
a multiscale visualization framework.},
owner = {Administrator},
timestamp = {2006.04.19},
}
@ARTICLE{Ishiyama2005,
author = {Ishiyama, R.; Hamanaka, M.; Sakamoto, S.;},
title = {An appearance model constructed on 3-D surface for robust face recognition
against pose and illumination variations},
journal = {Systems, Man and Cybernetics, Part C, IEEE Transactions},
year = {2005},
volume = {35},
pages = {326 - 334},
abstract = {We propose a face recognition method that is robust against image
variations due to arbitrary lighting and a large extent of pose
variations, ranging from frontal to profile views. Existing appearance
models defined on image planes are not applicable for such pose
variations that cause occlusions and changes of silhouette. In contrast,
our method constructs an appearance model of a three-dimensional
(3-D) object on its surface. Our proposed model consists of a 3-D
shape and geodesic illumination bases (GIBs). GIBs can describe
the irradiances of an object's surface under any illumination and
generate illumination subspace that can describe illumination variations
of an image in an arbitrary pose. Our appearance model is automatically
aligned to the target image by pose optimization based on a rough
pose, and the residual error of this model fitting is used as the
recognition score. We tested the recognition performance of our
method with an extensive database that includes 14 000 images of
200 individuals with drastic illumination changes and pose variations
up to 60/spl deg/ sideward and 45/spl deg/ upward. The method achieved
a first-choice success ratio of 94.2% without knowing precise poses
a priori.},
owner = {Administrator},
timestamp = {2006.04.19},
}
@ARTICLE{Jacobi2004,
author = {Ute Jacobi and Mai Chen and Gottfried Frankowski and Ronald Sinkgraven
and Martina Hund and Berthold Rzany and Wolfram Sterry and Jürgen
Lademann},
title = {{I}n vivo determination of skin surface topography using an optical
3{D} device.},
journal = {Skin Res Technol},
year = {2004},
volume = {10},
pages = {207--214},
number = {4},
month = {Nov},
abstract = {BACKGROUND/PURPOSE: Topography of the skin surface is a mirror of
the functional skin status. Therefore, its evaluation is of great
interest for dermatological research. In the present study, a new
optical measuring system was applied to evaluate human skin surface
topography in vivo and non-invasively, in order to determine elastotic
and mimic wrinkles dependent on age, body site and therapy. METHODS:
The measurements were performed on the back (n=5), the flexor forearm
(n=14) of volunteers in different age groups and on the face of
women (n=4) participating in an anti-wrinkle study. The evaluation
of the three-dimensional-profiles was performed determining skin
surface parameters (mean roughness (R(a)), mean depth of roughness
(R(z)), maximum roughness (R(m)) and waviness (W(t))) and applying
Fourier analysis. RESULTS: Significant increases in all surface
parameters were obtained on the forearms with increasing age. Differences
between the surface topographies of forearm and back were only expressed
by the waviness and the Fourier analysis. The treatment with botulinum
Toxin A led to a diminution of mimic wrinkles as reflected by the
furrow profiles. CONCLUSIONS: The results show a significant dependence
of the skin surface topography on the age of the volunteer and the
body site measured. Particularly the waviness, the Fourier analysis
and the furrow profiles reflect such dependencies. The system used
also fulfils the requirements for the testing of therapies, as was
demonstrated by the reduction of mimic wrinkles after treatment
with botulinum Toxin A.},
doi = {10.1111/j.1600-0846.2004.00075.x},
keywords = {Acoustics, Acrylic Resins, Actins, Adolescent, Adult, Aged, Alveolar
Process, Anatomic, Animals, Articular, Biological, Calcium, Calcium
Carbonate, Cardiac, Cartilage, Cell Adhesion, Cell Differentiation,
Cell Line, Cell Membrane, Cell Movement, Cell Proliferation, Cell
Size, Cells, Cephalometry, Child, Collagen, Comparative Study, Computer
Simulation, Computer-Assisted, Cultured, Cytoskeleton, Dental Enamel,
Dentin, Dentition, Dermoscopy, Electrodes, Electroencephalography,
Epilepsies, Equipment Design, Equipment Failure Analysis, Extracellular
Matrix, Facial Asymmetry, Female, Fibrinogen, Fibroblasts, Fibronectins,
Fluorescence, Gene Expression Regulation, Geology, Humans, Image
Interpretation, Image Processing, Imaging, Implanted, Incisor, Infant,
Inferior, Liver, Liver Circulation, Magnetic Resonance Imaging,
Male, Mandible, Mandibular Condyle, Maxilla, Mechanical, Mice, Microcomputers,
Microfluidics, Microscopy, Mid, Middle Aged, Models, Moire Topography,
Molar, Myocytes, NIH 3T3 Cells, Nasal Bone, Neocortex, Non-P.H.S.,
Non-U.S. Gov't, O, Orbit, Osteoarthritis, P.H.S., Partial, Physics,
Portal Vein, Preschool, Pseudopodia, Research Support, Retrospective
Studies, Scoliosis, Sella Turcica, Severity of Illness Index, Sex
Factors, Signal Transduction, Skin, Skin Aging, Software, Sphenoid
Bone, Spiral Computed, Statistical, Stress, Subdural Space, Surface
Properties, Swine, Three-Dimensional, Thumb, Tomography, Tooth,
Transfection, U.S. Gov't, User-Computer Interface, Vena Cava, Wrist
Joint, X-Ray Computed, dle Aged, ptical, 44},
owner = {Administrator},
pii = {SRT75},
pmid = {44},
timestamp = {2006.04.21},
url = {http://dx.doi.org/10.1111/j.1600-0846.2004.00075.x},
}
@CONFERENCE{Jantarang2004,
author = {Jantarang, S.; Panjapornpon, J.;},
title = {Enhancement of 3-D reconstruction from 2-D images using single camera},
booktitle = {TENCON 2004. 2004 IEEE Region 10 Conference
Volume A, 21-24 Nov. 2004 Page(s):407 - 410 Vol. 1},
year = {2004},
owner = {Administrator},
timestamp = {2006.04.19},
}
@ARTICLE{,
author = {Ján Bartl, Roman Fíra, Miroslav Hain},
title = {INSPECTION OF SURFACE BY THE MOIRÈ METHOD},
journal = {MEASUREMENT SCIENCE REVIEW},
year = {2001},
volume = {1},
number = {1},
abstract = {A moirè method is one of the optical methods which are suitable for
measurement of length, angle of rotation and also contactless surface
shape deviation evaluation. The article is concerned on the possibilities
of application this method by the evaluation of plane surface deviation
of the semiconductor wafers.},
owner = {Administrator},
pdf = {C:\Documents and Settings\Administrator\Desktop\Seminario\biblio\Bartl.pdf},
timestamp = {2006.04.27},
}
@ARTICLE{Kiessling2005,
author = {Fabian Kiessling and Martin Le-Huu and Tobias Kunert and Matthias
Thorn and Silvia Vosseler and Kerstin Schmidt and Johannes Hoffend
and Hans-Peter Meinzer and Norbert E Fusenig and Wolfhard Semmler},
title = {{I}mproved correlation of histological data with {DCE} {MRI} parameter
maps by 3{D} reconstruction, reslicing and parameterization of the
histological images.},
journal = {Eur Radiol},
year = {2005},
volume = {15},
pages = {1079--1086},
number = {6},
month = {Jun},
abstract = {Due to poor correlation of slice thickness and orientation, verification
of radiological methods with histology is difficult. Thus, a procedure
for three-dimensional reconstruction, reslicing and parameterization
of histological data was developed, enabling a proper correlation
with radiological data. Two different subcutaneous tumors were examined
by MR microangiography and DCE-MRI, the latter being post-processed
using a pharmacokinetic two-compartment model. Subsequently, tumors
were serially sectioned and vessels stained with immunofluorescence
markers. A ray-tracing algorithm performed three-dimensional visualization
of the histological data, allowing virtually reslicing to thicker
sections analogous to MRI slice geometry. Thick slices were processed
as parameter maps color coding the marker density in the depth of
the slice. Histological 3D reconstructions displayed the diffuse
angioarchitecture of malignant tumors. Resliced histological images
enabled specification of high enhancing areas seen on MR microangiography
as large single vessels or vessel assemblies. In orthogonally reconstructed
histological slices, single vessels were delineated. ROI analysis
showed significant correlation between histological parameter maps
of vessel density and MR parameter maps (r=0.83, P=0.05). The 3D
approach to histology improves correlation of histological and radiological
data due to proper matching of slice geometry. This method can be
used with any histological stain, thus enabling a multivariable
correlation of non-invasive data and histology.},
doi = {10.1007/s00330-005-2701-5},
keywords = {Algorithms, Animals, Artificial Intelligence, Arvicolinae, Automated,
Autoradiography, Bacteriophage mu, Biological, Brain, Calibration,
Carcinoma, Cluster Analysis, Comparative Study, Computer Simulation,
Computer-Assisted, DNA Transposable Elements, Deafness, Diastema,
Electron, Energy-Filtering Transmission Electron, Epithelium, Fluorescent
Antibody Technique, Fluorodeoxyglucose F18, Gestational Age, Glucose,
Hepatocellular, Histocytochemistry, Humans, Image Enhancement, Image
Interpretation, Image Processing, Imaging, Indirect, Information
Storage and Retrieval, Kidney, Magnetic Resonance Angiography, Magnetic
Resonance Imaging, Mice, Microscopy, Models, Molar, Neurological,
Non-U.S. Gov't, Nude, Odontogenesis, Pattern Recognition, Photogrammetry,
Protein Structure, Radiopharmaceuticals, Rats, Research Support,
Scanning Transmission, Signal Processing, Skin Neoplasms, Spleen,
Statistical, Subtraction Technique, Tertiary, Three-Dimensional,
Tooth Germ, Transposases, Visible Human Project, 15747142},
owner = {Administrator},
pmid = {15747142},
timestamp = {2006.04.20},
url = {http://dx.doi.org/10.1007/s00330-005-2701-5},
}
@ARTICLE{Klarhoefer2003,
author = {Markus Klarhöfer and Bixente Dilharreguy and Peter van Gelderen
and Chrit T W Moonen},
title = {{A} {PRESTO}-{SENSE} sequence with alternating partial-{F}ourier
encoding for rapid susceptibility-weighted 3{D} {MRI} time series.},
journal = {Magn Reson Med},
year = {2003},
volume = {50},
pages = {830--838},
number = {4},
month = {Oct},
abstract = {A 3D sequence for dynamic susceptibility imaging is proposed which
combines echo-shifting principles (such as PRESTO), sensitivity
encoding (SENSE), and partial-Fourier acquisition. The method uses
a moderate SENSE factor of 2 and takes advantage of an alternating
partial k-space acquisition in the "slow" phase encode direction
allowing an iterative reconstruction using high-resolution phase
estimates. Offering an isotropic spatial resolution of 4 x 4 x 4
mm(3), the novel sequence covers the whole brain including parts
of the cerebellum in 0.5 sec. Its temporal signal stability is comparable
to that of a full-Fourier, full-FOV EPI sequence having the same
dynamic scan time but much less brain coverage. Initial functional
MRI experiments showed consistent activation in the motor cortex
with an average signal change slightly less than that of EPI.},
doi = {10.1002/mrm.10599},
keywords = {-Ray Computed, 80 and over, Abnormalities, Acute Disease, Adolescent,
Adult, Aged, Algorithms, Alzheimer Disease, Aneurysm, Animals, Artifacts,
Autopsy, Biocompatible Materials, Biomedical, Bone Morphogenetic
Proteins, Bone Regeneration, Bone Screws, Brain, Brain Neoplasms,
Breast Neoplasms, Calibration, Carboxymethylcellulose, Carcinoma,
Cerebrovascular Circulation, Child, Collagen, Comp, Comparative
Study, Computer Simulation, Computer Systems, Computer-Aided Design,
Computer-Assisted, Conformal, Congenital, Contrast Media, Craniotomy,
Dementia, Dental, Diverticulum, Ductus Arteriosus, Ear, Echocardiography,
Echoencephalography, Electrocardiography, Emission-Computed, English
Abstract, Equipment Design, Equipment Failure, Esthetics, External,
Female, First, Fluorescent Dyes, Fluorodeoxyglucose F18, Follow-Up
Studies, Forecasting, Forensic Medicine, Fourier Analysis, Gadolinium
DTPA, Glioma, Growth Substances, Gunshot, Heart, Heart Diseases,
Heart Ventricles, Hip Dislocation, Humans, Image Enhancement, Image
Processi, Image Processing, Imaging, Immobilization, Infant, Internal
Fixators, Ischemia, Lasers, Leg, Lewy Body Disease, Lumbar Vertebrae,
Lung, Lung Neoplasms, Lymphatic Irradiation, Lymphatic Metastasis,
Magnetic Resonance Angiography, Magnetic Resonance Imaging, Male,
Mandible, Mandibular Injuries, Maxilla, Middle Aged, Multiple, Myocardial
Contraction, Neck, Non-P.H.S., Non-Small-Cell Lung, Non-U.S. Gov't,
Observer Variation, Operating Room Information Systems, Oral Surgical
Procedures, P.H.S., Parkinson Disease, Phantoms, Photogrammetry,
Polymethyl Methacrylate, Postoperative Complica, Postoperative Complications,
Predictive Value of Tests, Pregnancy, Pregnancy Trimester, Prenatal,
Preschool, Progno, Prospective Studies, Prosthe, Prostheses and
Implants, Prosthesis Design, Prosthesis Fitting, Pulmonary Artery,
Pulmonary Embolism, Quality of Life, Ra, Radiographic Image Enhancement,
Radiographic Image Inter, Radiography, Radiopharmaceuticals, Radiotherapy,
Radiotherapy Dosage, Radiotherapy Planning, Recombinant Proteins,
Reference Values, Reproducibility of Results, Research Support,
Respiration, Retrospective Studies, Ruptur, Sensitivity and Specificity,
Single-Photon, Skull, Software, Spinal Diseases, Spinal Fractures,
Spinal Fusion, Spiral Computed, Statistics, Stroke Volume, Surface
Properties, Surgery, Survival Rate, Swine, Technology, Technology
Assessment, Thoracic, Thoracic Vertebrae, Thoracic Wall, Three-Dimensional,
Thrombosis, Time Factors, Titanium, Tomography, Transforming Growth
Factor beta, U.S. Gov't, Ultrasonography, Urodynamics, User-Computer
Interface, Vesico-Ureteral Reflux, Wounds, X, X-Ray Computed, diotherapy
Planning, ed, ng, pretation, ses and Implants, sis, tions, uter-Assisted,
14523970},
owner = {Administrator},
pmid = {14523970},
timestamp = {2006.04.20},
url = {http://dx.doi.org/10.1002/mrm.10599},
}
@ARTICLE{Kodama2005,
author = {Tetsuji Kodama and Xiaoyuan Li and Kenji Nakahira and Dai Ito},
title = {{E}volutionary computation applied to the reconstruction of 3-{D}
surface topography in the {SEM}.},
journal = {J Electron Microsc (Tokyo)},
year = {2005},
volume = {54},
pages = {429--435},
number = {5},
month = {Oct},
abstract = {A genetic algorithm has been applied to the line profile reconstruction
from the signals of the standard secondary electron (SE) and/or
backscattered electron detectors in a scanning electron microscope.
This method solves the topographical surface reconstruction problem
as one of combinatorial optimization. To extend this optimization
approach for three-dimensional (3-D) surface topography, this paper
considers the use of a string coding where a 3-D surface topography
is represented by a set of coordinates of vertices. We introduce
the Delaunay triangulation, which attains the minimum roughness
for any set of height data to capture the fundamental features of
the surface being probed by an electron beam. With this coding,
the strings are processed with a class of hybrid optimization algorithms
that combine genetic algorithms and simulated annealing algorithms.
Experimental results on SE images are presented.},
doi = {10.1093/jmicro/dfi062},
keywords = {'t, 80 and ove, 80 and over, Abdominal, Adult, Aged, Algorithms, Anatomy,
Animals, Anisotropy, Aorta, Arthrography, Artificial Intelligence,
Asian Continental Ancestry Group, Automated, Biological, Blood Flow
Velocity, Blood Pressure, Body Constitution, Breast, Breast Neoplasms,
Cadaver, Carcinoma, Cardiovascular, Comparative Study, Computer
Simulation, Computer-Assisted, Confocal, Coronary Angiography, Coronary
Arteriosclerosis, Coronary Stenosis, Cross-Sectional, Data Compression,
Elasticity, Extramural, Feasibility Studies, Fem, Female, Finite
Element Analysis, Fluorescence, Humans, Image Enhancement, Image
Interpretation, Image Processing, Imaging, Infarction, Information
Storage and Retrieval, Joints, Kidney, Leg, Magnetic Resonance Imaging,
Male, Mice, Microscopy, Microsurgery, Microtomy, Middle Aged, Models,
Morphogenesis, Myocardial Infarction, N.I.H., Nasal Bone, Neoplasm
Invasiveness, Neoplasm Staging, Neuronavigation, Non-P.H.S., Non-U.S.
Gov, Non-U.S. Gov't, Organ Size, P.H.S., Pattern Recognition, Phantoms,
Photogrammetry, Pilot Projects, Preoperative Care, Principal Component
Analysis, Protoplasts, Pulsatile Flow, Radiographic Image Enhancement,
Radiographic Image Interpretation, Repro, Reproducibility of Results,
Research Support, Rheology, Ribs, Scoliosis, Sensitivity and Specificity,
Shear Strength, Signal Processing, Squamous Cell, Statistical, Statistics,
Stomach Neoplasms, Subtraction Technique, Surgery, Systems Integration,
Temporal Bone, Three-Dimensional, Tobacco, Tomography, Transgenic,
U.S. Gov't, United State, User-Computer Interface, Uterine Cervical
Neoplasms, Vacuoles, Video, Video Recording, Visible Human Project,
Whole-Body Counting, ale, ducibility of Results, r, s, 16195361},
owner = {Administrator},
pii = {dfi062},
pmid = {16195361},
timestamp = {2006.04.20},
url = {http://dx.doi.org/10.1093/jmicro/dfi062},
}
@CONFERENCE{Lee;2002,
author = {Chul-Soo Ye; Kwae-Hi Lee;},
title = {3-D reconstruction of man-made objects based on watershed segmentation
and 3-D grouping},
booktitle = {Industrial Electronics, 2002. ISIE 2002. Proceedings of the 2002
IEEE International Symposium on
Volume 2, 8-11 July 2002 Page(s):453 - 456 vol.2},
year = {2002},
abstract = {This paper presents a method for automatic 3-D reconstruction of man-made
objects using high resolution aerial imagery. The proposed method
consists of three parts. First, by using mean curvature diffusion,
noise is eliminated and edges are preserved. Next, images are segmented
by a watershed algorithm. Finally, man-made objects are modeled
as a set of planar polygonal patches. A roof of man-made object
is described as a set of planar polygonal patches, each of which
is extracted by watershed-based image segmentation, line segment
matching and coplanar grouping. The coplanar grouping process can
be restricted to the 3-D line segments from the region boundary.
Coplanar grouping and polygonal patch formation is performed per
region by selecting 3-D line segments that are matched using epipolar
geometry and flight information. The algorithm has been applied
to high resolution aerial images and the results show accurate reconstruction
of man-made objects.},
owner = {Administrator},
timestamp = {2006.04.19},
}
@MISC{leung-reconstruction,
author = {Carlos Leung and Brian C. Lovell},
title = {3D Reconstruction through Segmentation of Multi-View Image Sequences},
abstract = {We propose what we believe is a new approach to 3D
reconstruction through the design of a 3D voxel volume,
such that all the image information and camera geometry
are embedded into one feature space. By customising the
volume to be suitable for segmentation, the key idea that we
propose is the recovery of a 3D scene through the use of
globally optimal geodesic active contours. We also present
an extension to this idea by proposing the novel design of
a 4D voxel volume to analyse the stereo motion problem in
multi-view image sequences.},
url = {citeseer.ist.psu.edu/684705.html},
}
@ARTICLE{Lhuillier2005,
author = {Maxime Lhuillier and Long Quan},
title = {{A} quasi-dense approach to surface reconstruction from uncalibrated
images.},
journal = {IEEE Trans Pattern Anal Mach Intell},
year = {2005},
volume = {27},
pages = {418--433},
number = {3},
month = {Mar},
abstract = {This paper proposes a quasi-dense approach to 3D surface model acquisition
from uncalibrated images. First, correspondence information and
geometry are computed based on new quasi-dense point features that
are resampled subpixel points from a disparity map. The quasi-dense
approach gives more robust and accurate geometry estimations than
the standard sparse approach. The robustness is measured as the
success rate of full automatic geometry estimation with all involved
parameters fixed. The accuracy is measured by a fast gauge-free
uncertainty estimation algorithm. The quasi-dense approach also
works for more largely separated images than the sparse approach,
therefore, it requires fewer images for modeling. More importantly,
the quasidense approach delivers a high density of reconstructed
3D points on which a surface representation can be reconstructed.
This fills the gap of insufficiency of the sparse approach for surface
reconstruction, essential for modeling and visualization applications.
Second, surface reconstruction methods from the given quasi-dense
geometry are also developed. The algorithm optimizes new unified
functionals integrating both 3D quasi-dense points and 2D image
information, including silhouettes. Combining both 3D data and 2D
images is more robust than the existing methods using only 2D information
or only 3D data. An efficient bounded regularization method is proposed
to implement the surface evolution by level-set methods. Its properties
are discussed and proven for some cases. As a whole, a complete
automatic and practical system of 3D modeling from raw images captured
by hand-held cameras to surface representation is proposed. Extensive
experiments demonstrate the superior performance of the quasi-dense
approach with respect to the standard sparse approach in robustness,
accuracy, and applicability.},
keywords = {Algorithms, Animals, Artificial Intelligence, Arvicolinae, Automated,
Bacteriophage mu, Biological, Calibration, Cluster Analysis, Comparative
Study, Computer Simulation, Computer-Assisted, DNA Transposable
Elements, Diastema, Electron, Energy-Filtering Transmission Electron,
Epithelium, Gestational Age, Histocytochemistry, Humans, Image Enhancement,
Image Interpretation, Image Processing, Imaging, Information Storage
and Retrieval, Kidney, Microscopy, Models, Molar, Non-U.S. Gov't,
Odontogenesis, Pattern Recognition, Photogrammetry, Protein Structure,
Research Support, Scanning Transmission, Signal Processing, Spleen,
Statistical, Subtraction Technique, Tertiary, Three-Dimensional,
Tooth Germ, Transposases, Visible Human Project, 15747796},
owner = {Administrator},
pmid = {15747796},
timestamp = {2006.04.20},
}
@ARTICLE{Li2004,
author = {Li, Y.F.; Lu, R.S.;},
title = {Uncalibrated Euclidean 3-D reconstruction using an active vision
system},
journal = {Robotics and Automation, IEEE Transactions},
year = {2004},
volume = {20},
pages = {15 - 25},
abstract = {Uncalibrated reconstruction of a scene is desired in many practical
applications of computer vision. However, using a single camera
with unconstrained motion and unknown parameters, a true Euclidean
three-dimensional (3-D) model of the scene cannot be reconstructed.
In this paper, we present a method for true Euclidean 3-D reconstruction
using an active vision system consisting of a pattern projector
and a camera. When the intrinsic and extrinsic parameters of the
camera are changed during the reconstruction, they can be self-calibrated
and the real 3-D model of the scene can then be reconstructed. The
parameters of the projector are precalibrated and are kept constant
during the reconstruction process. This allows the configuration
of the vision system to be varied during a reconstruction task,
which increases its self-adaptability to the environment or scene
structure in which it is to work.},
owner = {Administrator},
timestamp = {2006.04.19},
}
@ARTICLE{Lu2006,
author = {Xiaoguang Lu and Anil K Jain and Dirk Colbry},
title = {{M}atching 2.5{D} face scans to 3{D} models.},
journal = {IEEE Trans Pattern Anal Mach Intell},
year = {2006},
volume = {28},
pages = {31--43},
number = {1},
month = {Jan},
abstract = {The performance of face recognition systems that use two-dimensional
images depends on factors such as lighting and subject's pose. We
are developing a face recognition system that utilizes three-dimensional
shape information to make the system more robust to arbitrary pose
and lighting. For each subject, a 3D face model is constructed by
integrating several 2.5D face scans which are captured from different
views. 2.5D is a simplified 3D (x, y, z) surface representation
that contains at most one depth value (z direction) for every point
in the (x, y) plane. Two different modalities provided by the facial
scan, namely, shape and texture, are utilized and integrated for
face matching. The recognition engine consists of two components,
surface matching and appearance-based matching. The surface matching
component is based on a modified Iterative Closest Point (ICP) algorithm.
The candidate list from the gallery used for appearance matching
is dynamically generated based on the output of the surface matching
component, which reduces the complexity of the appearance-based
matching stage. Three-dimensional models in the gallery are used
to synthesize new appearance samples with pose and illumination
variations and the synthesized face images are used in discriminant
subspace analysis. The weighted sum rule is applied to combine the
scores given by the two matching components. Experimental results
are given for matching a database of 200 3D face models with 598
2.5D independent test scans acquired under different pose and some
lighting and expression changes. These results show the feasibility
of the proposed matching scheme.},
keywords = {Adult, Algorithms, Amoxicillin-Potassium Clavulanate Combination,
Angle Class III, Animals, Anti-Bacterial Agents, Anti-Inflammatory
Agents, Antibiotic Prophylaxis, Artifacts, Artificial Intelligence,
Automated, Autoradiography, Biometry, Calibration, Carcinoma, Cephalometry,
Cerebral Angiography, Cervical Vertebrae, Comparative Study, Computer-Aided
Design, Computer-Assisted, Dexamethasone, Edema, English Abstract,
Experimental, Face, Female, Fluorodeoxyglucose F18, Follow-Up Studies,
Forensic Anthropology, Heterotopic, Humans, Image Interpretation,
Imaging, Inbred C57BL, Intracranial Aneurysm, Lasers, Lewis Lung,
Liver Neoplasms, Longitudinal Studies, Lung Neoplasms, Male, Malocclusion,
Mandible, Maxilla, Mice, Middle Aged, Neoplasm Metastasis, Non-P.H.S.,
Ossification, Pattern Recognition, Phantoms, Photogrammetry, Photography,
Positron-Emission Tomography, Postoperative Complications, Premedication,
Prospective Studies, Radiation Dosage, Reproducibility of Results,
Research Support, Sensitivity and Specificity, Spondylitis, Subtraction
Technique, Surgical Instruments, Three-Dimensional, Tissue Distribution,
Titanium, Tomography, Tomography Scanners, U.S. Gov't, Ultrasonography,
United States, X-Ray Computed, 16402617},
owner = {Administrator},
pmid = {16402617},
timestamp = {2006.04.20},
}
@MISC{M.Pollefeys2001,
author = {M.Pollefeys,},
title = {Obtaining 3D Models with a Handheld Camera},
howpublished = {Siggraph Course, ACM,2001, Course notes CD-ROM;},
year = {2001},
abstract = {Modeling of 3D objects from image sequences is a challenging problem
and has been a research topic for many years. Important theoretical
and algorithmic results were achieved that allow to extract even
complex 3D scene models from images. One recent effort has been
to reduce the amount of calibration and to avoid restrictions on
the camera motion. In this contribution an approach is described
which achieves this goal by combining state-of-the-art algorithms
for uncalibrated projective reconstruction, self-calibration and
dense correspondence matching.},
owner = {Administrator},
timestamp = {2006.04.19},
url = {http://www.cs.unc.edu/~marc/tutorial/},
}
@ARTICLE{Motai2004,
author = {Motai, Y.; Kak, A.;},
title = {An interactive framework for acquiring vision models of 3-D objects
from 2-D images},
journal = {Systems, Man and Cybernetics, Part B, IEEE Transactions},
year = {2004},
volume = {34},
pages = {566 - 578},
abstract = {This paper presents a human-computer interaction (HCI) framework for
building vision models of three-dimensional (3-D) objects from their
two-dimensional (2-D) images. Our framework is based on two guiding
principles of HCI: 1) provide the human with as much visual assistance
as possible to help the human make a correct input; and 2) verify
each input provided by the human for its consistency with the inputs
previously provided. For example, when stereo correspondence information
is elicited from a human, his/her job is facilitated by superimposing
epipolar lines on the images. Although that reduces the possibility
of error in the human marked correspondences, such errors are not
entirely eliminated because there can be multiple candidate points
close together for complex objects. For another example, when pose-to-pose
correspondence is sought from a human, his/her job is made easier
by allowing the human to rotate the partial model constructed in
the previous pose in relation to the partial model for the current
pose. While this facility reduces the incidence of human-supplied
pose-to-pose correspondence errors, such errors cannot be eliminated
entirely because of confusion created when multiple candidate features
exist close together. Each input provided by the human is therefore
checked against the previous inputs by invoking situation-specific
constraints. Different types of constraints (and different human-computer
interaction protocols) are needed for the extraction of polygonal
features and for the extraction of curved features. We will show
results on both polygonal objects and object containing curved features.},
owner = {Administrator},
timestamp = {2006.04.19},
}
@ARTICLE{Nau2005,
author = {Thomas Nau and Yan Chevalier and Nicola Hagemeister and Nicolas Duval
and Jacques A deGuise},
title = {3{D} kinematic in-vitro comparison of posterolateral corner reconstruction
techniques in a combined injury model.},
journal = {Knee Surg Sports Traumatol Arthrosc},
year = {2005},
volume = {13},
pages = {572--580},
number = {7},
month = {Oct},
abstract = {With the variable injury pattern to the posterolateral structures
(PLS) of the knee, a number of reconstructive procedures have been
introduced. It was the aim of the present study to evaluate the
resulting 3D kinematics following three different surgical techniques
of reconstruction in a combined posterior cruciate ligament (PCL)/PLS
injury model. In nine human cadaveric knees, 3D kinematics were
recorded during the path of flexion-extension using a computer based
custom made 6-degree-of-freedom (DOF) testing apparatus. Additional
laxity tests were conducted at 30 and 90 degrees of flexion. Testing
was performed before and after cutting the PLS and PCL, followed
by PCL reconstruction alone. Reconstructing the posterolateral corner,
three surgical techniques were compared: (a) the posterolateral
corner sling procedure (PLCS), (b) the biceps tenodesis (BT), and
(c) a bone patellar-tendon bone (BTB) allograft reconstruction.
Posterior as well as rotational laxity were significantly increased
after PCL/PLS transection at 30 and 90 degrees of flexion. Isolated
PCL reconstruction resulted in a remaining external rotational deficiency
for both tested flexion angles. Additional PLS reconstruction closely
restored external rotation as well as posterior translation to intact
values by all tested procedures. Compared to the intact knee, dynamic
testing revealed a significant internal tibial rotation for (b)
BT (mean=3.9 degrees, p=0.043) and for (c) BTB allograft (mean=4.3
degrees, p=0.012). (a) The PLCS demonstrated a tendency to internal
tibial rotation between 0 and 60 degrees of flexion (mean=2.2 degrees,
p=0.079). Varus/valgus rotation as well as anterior/posterior translation
did not show significant differences for any of the tested techniques.
The present study shows that despite satisfying results in static
laxity testing, pathological 3D knee kinematics were not restored
to normal, demonstrated by a nonphysiological internal tibial rotation
during the path of flexion-extension.},
doi = {10.1007/s00167-004-0586-5},
keywords = {Adult, Aged, Algorithms, Animals, Articular, Artificial Intelligence,
Arvicolinae, Automated, Autoradiography, Bacteriophage mu, Biological,
Biological Markers, Biomechanics, Biotin, Bone Plates, Bone Transplantation,
Brain, Calcium-Binding Protein, Calibration, Carcinoma, Cervical
Vertebrae, Cluster Analysis, Comparative Study, Compressive Strength,
Computer Simulation, Computer-Assisted, Confocal, Coronary Vessels,
Cryoelectron Microscopy, Cysteine Endopeptidases, DNA Transposable
Elements, Deafness, Dendrites, Dextrans, Diagnosis, Diastema, Dimerization,
Diskectomy, Electron, Energy-Filtering Transmission Electron, Entorhinal
Cortex, Epithelium, Equipment Failure Analysis, Extramural, Female,
Finite Element Analysis, Fluorescent Antibody Technique, Fluorescent
Dyes, Fluorodeoxyglucose F18, Gestational Age, Glucose, Hepatocellular,
Hippocampus, Histocytochemistry, Humans, Image Cytometry, Image
Enhancement, Image Interpretation, Image Processing, Imaging, In
Vitro, Indirect, Information Storage and Retrieval, Interneurons,
Intervertebral Disk, Kidney, Knee Injuries, Knee Joint, Magnetic
Resonance Angiography, Magnetic Resonance Imaging, Male, Mechanical,
Mice, Microscopy, Middle Aged, Models, Molar, Molecular, Movement,
N.I.H., Nerve Fibers, Neural Pathways, Neurological, Non-U.S. Gov't,
Nude, Odontogenesis, Orthopedics, P.H.S., Para-Articular, Parahippocampal
Gyrus, Parvalbumins, Pattern Recognition, Phosphorylase Kinase,
Photogrammetry, Plants, Pliability, Polyethylenes, Posterior Cruciate
Ligament, Potyvirus, Presynaptic Terminals, Prostheses and Implants,
Prosthesis Design, Protein Structure, Rabbits, Radiopharmaceuticals,
Range of Motion, Rats, Reconstructive Surgical Proce, Reconstructive
Surgical Procedures, Research Support, Respiration, Scanning Transmission,
Signal Processing, Skin Neoplasms, Spleen, Staining and Labeling,
Statistical, Stress, Subtraction Technique, Tendons, Tensile Strength,
Tertiary, Therapy, Three-Dimensional, Tibia, Time Factors, Tooth
Germ, Transposases, Treatment Outcome, U.S. Gov't, Ultracentrifugation,
Viral Proteins, Visible Human Project, Vitamin D-Dependent, Weight-Bearing,
Wistar, X-Rays, dures, 15703964},
owner = {Administrator},
pmid = {15703964},
timestamp = {2006.04.20},
url = {http://dx.doi.org/10.1007/s00167-004-0586-5},
}
@CONFERENCE{nebel01generation,
author = {Jean-Christophe Nebel},
title = {Generation of True 3D Films},
booktitle = {International Conference on Virtual Storytelling},
year = {2001},
pages = {10-19},
abstract = {We de ne a true 3D lm as a lm that can be viewed from any point in
space. In order to generate true 3D lms, the 3D-MATIC Research Laboratory
of the University of Glasgow has been developing a capture 3D studio
based on photogrammetry technology. The idea is simply to generate
25 photo-realistic 3D models of a scene per second of lm. After
the presentation of the state of the art in the domain, the core
technology of our dynamic 3D scanner is detailed. Finally rst results,
based on a 12 camera..},
pdf = {http://citeseer.ist.psu.edu/rd/98519713%2C481551%2C1%2C0.25%2CDownload/http://citeseer.ist.psu.edu/cache/papers/cs/23204/http:zSzzSzwww.dcs.gla.ac.ukzSz%7EjczSzPaperszSzPSformatzSzAvignon01.pdf/nebel01generation.pdf},
url = {http://citeseer.ist.psu.edu/nebel01generation.html},
}
@CONFERENCE{,
author = {P. Fong, F. Buron},
title = {High-Resolution Three-Dimensional Sensing of Fast Deforming Objects},
booktitle = {IEEE/RSJ International Conference on Intelligent Robots and Systems
(IROS)},
year = {2005},
abstract = {In applications like motion capture, high speed collision testing
and robotic manipulation of deformable objects there is a critical
need for capturing the 3D geometry of fast moving and/or deforming
objects. Although there exist many 3D sensing techniques, most cannot
deal with dynamic scenes (e.g., laser scanning). Others, like stereovision,
require that object surfaces be appropriately textured. Few, if
any, build highresolution 3D models of dynamic scenes. This paper
presents a technique to compute high-resolution range maps from
single images of moving and deforming objects. This method is based
on
observing the deformation of a projected light pattern that combines
a set of parallel colored stripes and a perpendicular set of sinusoidal
intensity stripes. While the colored stripes allow the sensor to
compute absolute depths at coarse resolution, the sinusoidal intensity
stripes give dense relative depths. This
twofold pattern makes it possible to extract a high-resolution range
map from each image in a video sequence. The sensor has been implemented
and tested on several deforming objects.},
owner = {Administrator},
pdf = {C:\Documents and Settings\Administrator\Desktop\Seminario\biblio\3dcampaper_iros.pdf},
timestamp = {2006.04.27},
}
@ARTICLE{Pizarro2004,
author = {Pizarro, O.; Eustice, R.; Singh, H.;},
title = {Large area 3D reconstructions from underwater surveys},
journal = {OCEANS '04. MTS/IEEE TECHNO-OCEAN '04},
year = {2004},
volume = {2},
pages = {678 - 687},
abstract = {Robotic underwater vehicles can perform vast optical surveys of the
ocean floor. Scientists value these surveys since optical images
offer high levels of information and are easily interpreted by humans.
Unfortunately the coverage of a single image is limited by absorption
and backscatter while what is needed is an overall view of the survey
area. Recent work on underwater mosaics assume planar scenes and
are applicable only to situations without much relief. We present
a complete and validated system for processing optical images acquired
from an underwater robotic vehicle to form a 3D reconstruction of
the ocean floor. Our approach is designed for the most general conditions
of wide-baseline imagery (low overlap and presence of significant
3D structure) and scales to hundreds of images. We only assume a
calibrated camera system and a vehicle with uncertain and possibly
drifting pose information (e.g. a compass, depth sensor and a Doppler
velocity log). Our approach is based on a combination of techniques
from computer vision, photogrammetry and robotics. We use a local
to global approach to structure from motion, aided by the navigation
sensors on the vehicle to generate 3D submaps. These submaps are
then placed in a common reference frame that is refined by matching
overlapping submaps. The final stage of processing is a bundle adjustment
that provides the 3D structure, camera poses and uncertainty estimates
in a consistent reference frame. We present results with ground-truth
for structure as well as results from an oceanographic survey over
a coral reef covering an area of approximately one hundred square
meters.},
owner = {Administrator},
timestamp = {2006.04.19},
}
@MISC{pollefeys-capture,
author = {Marc Pollefeys and Luc Van Gool and Maarten Vergauwen and Kurt Cornelis
and Frank Verbiest and Jan Tops},
title = {3D Capture of Archaeology and Architecture with a Hand-Held Camera},
abstract = {In this paper we present an automated processing pipeline that, from
a sequence of images, reconstructs a 3D model. The
approach is particularly flexible as it can deal with a hand-held
camera without the need for an a priori calibration or
explicit knowledge about the recorded scene. In a fist stage features
are extracted and tracked throughout the sequence.
Using robust statistics and multiple view relations the 3D structure
of the observed features and the camera motion and
calibration are computed. In a second stage stereo matching is used
to obtain a detailed estimate of the geometry of the
observed scene. The presented approach integrates state-of-the-art
algorithms developed in computer vision, computer
graphics and photogrammetry. Due to its flexibility during image acqusition,
this approach is particularly well suited for
application in the field of archaeology and architectural conservation.},
url = {citeseer.ist.psu.edu/722168.html},
}
@MISC{pollefeys-acquisition,
author = {Marc Pollefeys and Maarten Vergauwen and Kurt Cornelis and Frank
Verbiest
and Joris Schouteden and Jan Tops and Luc Van Gool},
title = {3D Acquisition of Archaeological Heritage from Images},
abstract = {The performance of face recognition systems that use two-dimensional
images depends on factors such as lighting and subject's pose. We
are developing a face recognition system that utilizes three-dimensional
shape information to make the system more robust to arbitrary pose
and lighting. For each subject, a 3D face model is constructed by
integrating several 2.5D face scans which are captured from different
views. 2.5D is a simplified 3D (x,y,z) surface representation that
contains at most one depth value (z direction) for every point in
the (x, y) plane. Two different modalities provided by the facial
scan, namely, shape and texture, are utilized and integrated for
face matching. The recognition engine consists of two components,
surface matching and appearance-based matching. The surface matching
component is based on a modified iterative closest point (ICP) algorithm.
The candidate list from the gallery used for appearance matching
is dynamically generated based on the output of the surface matching
component, which reduces the complexity of the appearance-based
matching stage. Three-dimensional models in the gallery are used
to synthesize new appearance samples with pose and illumination
variations and the synthesized face images are used in discriminant
subspace analysis. The weighted sum rule is applied to combine the
scores given by the two matching components. Experimental results
are given for matching a database of 200 3D face models with 598
2.5D independent test scans acquired under different pose and some
lighting and expression changes. These results show the feasibility
of the proposed matching scheme.},
url = {citeseer.ist.psu.edu/717078.html},
}
@ARTICLE{Poon2006,
author = {Tony C Poon and Robert N Rohling},
title = {{T}hree-dimensional extended field-of-view ultrasound.},
journal = {Ultrasound Med Biol},
year = {2006},
volume = {32},
pages = {357--369},
number = {3},
month = {Mar},
abstract = {Three-dimensional (3-D) extended field-of-view ultrasound creates
a mosaic view from a set of volumes acquired from a dedicated 3-D
ultrasound machine combined with a position tracker. A simple compounding
technique can be used to combine the volumes together using only
the position measurements, but some misalignment remains. Two different
registration methods were developed to correct these errors in the
overlapping regions. The first method divides the overlap into smaller
blocks and warps the blocks to best align the features. The second
method is similar, but uses rigid body registration of the blocks.
Experiments in vitro and in vivo showed that block-based registration
with warping produced the most reproducible results and the greatest
increase in similarity among the overlapping regions. It also produced
the best reconstruction accuracy, with a mean distance error of
0.4 mm measured across 101.78 mm in a phantom, representing 0.4\%
error. (E-mail: ).},
doi = {6/j.ultrasmedbio.2005.11.003},
keywords = {16530094},
owner = {Administrator},
pii = {S0301-5629(05)00436-9},
pmid = {16530094},
timestamp = {2006.04.20},
url = {http://dx.doi.org/6/j.ultrasmedbio.2005.11.003},
}
@MISC{poulin03interactive,
author = {P. POULIN and M. STAMMINGER and F. DURANLEAU and M. FRASSON and G.
DRETTAKIS},
title = {Interactive point-based modeling of complex objects from images},
year = {2003},
abstract = {Modeling complex realistic objects is a difficult and time
consuming process. Nevertheless, with improvements in
rendering speed and quality, more and more applications
require such realistic complex 3D objects. We present
an interactive modeling system that extracts 3D objects
from photographs. Our key contribution lies in the tight
integration of a point-based representation and user interactivity,
by introducing a set of interactive tools to guide
reconstruction. 3D color points are a flexible and effective
representation for very complex objects; adding,
moving, or removing points is fast and simple, facilitating
easy improvement of object quality. Because images and
depths maps can be very rapidly generated from points,
testing validity of point projections in several images is
efficient and simple. These properties allow our system
to rapidly generate a first approximate model, and allow
the user to continuously and interactively guide the generation
of points, both locally and globally. A set of interactive
tools and optimizations are introduced to help the
user improve the extracted objects.},
text = {POULIN P., STAMMINGER M., DURANLEAU F., FRASSON M.-C., DRETTAKIS G.:
Interactive
point-based modeling of complex objects from images. In Graphics
Interface
2003 (June 2003), pp. 11--20. 2},
url = {citeseer.ist.psu.edu/poulin03interactive.html},
}
@CONFERENCE{Riaz2004,
author = {Riaz, F.; Munawar, A.; Mehboob, A.; Baig, W.;},
title = {A new algorithm for reconstruction of 3-D coordinates from a 2-D
image using a projected pattern},
booktitle = {Multitopic Conference, 2004. Proceedings of INMIC 2004. 8th International
24-26 Dec. 2004 Page(s):579 - 583},
year = {2004},
owner = {Administrator},
timestamp = {2006.04.19},
}
@ARTICLE{Robinette2006,
author = {Kathleen M Robinette and Hein A M Daanen},
title = {{P}recision of the {CAESAR} scan-extracted measurements.},
journal = {Appl Ergon},
year = {2006},
volume = {37},
pages = {259--265},
number = {3},
month = {May},
abstract = {Three-dimensional (3D) body scanners are increasingly used to derive
1D body dimensions from 3D whole body scans for instance, as input
for clothing grading systems to make made-to-measure clothing or
for width and depth dimensions of a seated workstation. In this
study, the precision of the scanner-derived 1D dimensions from the
CAESAR survey, a multinational anthropometric survey, was investigated.
Two combinations of scanning teams with 3D whole body scanners were
compared, one called the US Team and the other the Dutch Team. Twenty
subjects were measured three times by one scanner and one team,
and three times by the other combination. The subjects were marked
prior to scanning using small dots, and the linear distances between
the dots were calculated after processing the scans. The mean absolute
difference (MAD) of the repetitions was calculated and this was
compared to reported acceptable errors in manual measurements from
the US Army's ANSUR survey when similar measurements were available.
In addition, the coefficient of variation (CV) was calculated for
all measurements. The results indicate that the CAESAR scan-extracted
measurements are highly reproducible; for most measures the MAD
is less than 5mm. In addition, more than 93\% of the MAD values
for CAESAR are significantly smaller than the ANSUR survey acceptable
errors. Therefore, it is concluded that the type of scan-extracted
measures used in CAESAR are as good as or better than comparable
manual measurements. Scan-extracted measurements that do not use
markers or are not straight-line distances are not represented here
and additional studies would be needed to verify their precision.},
doi = {10.1016/j.apergo.2005.07.009},
keywords = {80 and over, Adipose Tissue, Adult, Aged, Alcohol Withdrawal Seizure,
Alcoholism, Algorithms, Anatomic, Angiography, Ankle Joint, Anterior
Cerebral Artery, Biological, Biomechanics, Breast Neoplasms, Carcinoma,
Comparative Study, Computer Simulation, Computer-Assisted, Conformal,
Corpus Callosum, Digital Subtraction, Dose Fractionation, Drug Administration
Schedule, Echo-Planar Imaging, English Abstract, Extramural, Feasibility
Studies, Female, Forecasting, Health Care, Humans, Hypertension,
Hypertensive, Image Enhancement, Image Interpretation, Image Processing,
Imaging, Injections, Intracranial Aneurysm, Intracranial Hemorrhage,
Kidney Neoplasms, Lung Neoplasms, Lymph Nodes, Lymphatic Metas,
Magnetic Resonance Angiography, Male, Mediastinum, Middle Aged,
Models, Movement, Multivariate Analysis, Muscle, N.I.H., Neoplasm
Staging, Non-Small-Cell Lung, Non-U.S. Gov't, P.H.S., Phonetics,
Positron-Emission Tomography, Principal Component Analysis, Probability,
Prostate, Prostatic Neoplasms, Quality Assurance, ROC Curve, Radiopharmaceuticals,
Radiotherapy, Radiotherapy Planning, Reference Standards, Research
Support, Skeletal, Software Validation, Sound Spectrography, Three-Dimensional,
Tomography, Tongue, Transducers, Treatment Outcome, U.S. Gov't,
Ultrasonography, User-Computer Interface, Water, Whole Body Imaging,
Whole-Body Counting, X-Ray Computed, s, tasis, 16202970},
owner = {Administrator},
pii = {S0003-6870(05)00121-3},
pmid = {16202970},
timestamp = {2006.04.20},
url = {http://dx.doi.org/10.1016/j.apergo.2005.07.009},
}
@ARTICLE{Roh2004,
author = {Roh, Y.J.; Cho, H.S.;},
title = {Implementation of uniform and simultaneous ART for 3-D reconstruction
in an X-ray imaging system},
journal = {Vision, Image and Signal Processing, IEE Proceedings},
year = {2004},
volume = {151},
pages = {360 - 368},
abstract = {The authors propose a 3-D volume reconstruction method using X-ray
images with a calibration method to implement it in an X-ray imaging
system. Previously the authors have proposed an advanced 3-D reconstruction
algorithm based on an algebraic reconstruction technique (ART),
called a uniform and simultaneous ART (USART). In practice, however,
there are two main issues in implementing it in a realised X-ray
imaging system. The first one is the huge computation time and memory
required in achieving 3-D volume, which is a common limitation in
most ART methods. The second issue is the system calibration for
determining the geometry of the X-ray imaging conditions needed
for the ART method. These two critical problems are addressed. A
fast computing model of USART is proposed, where spherical voxel
elements are employed in computation to reduce the computation time
and memory. Then, a calibration method is proposed to identify the
X-ray imaging geometry based on a cone beam projection model. For
this purpose, a set of X-ray images of a reference grid pattern
is used and the X-ray source positions are determined from the analysis
of the image features, the centres of the grid points in the X-ray
images. The validity of the proposed 3-D reconstruction method is
investigated using a series of experiments.},
owner = {Administrator},
timestamp = {2006.04.19},
}
@ARTICLE{Rohlfing2005,
author = {Rohlfing, T.; Denzler, J.; Grassl, C.; Russakoff, D.B.; Maurer, C.R.,
Jr.;},
title = {Markerless real-time 3-D target region tracking by motion backprojection
from projection images},
journal = {Medical Imaging, IEEE Transactions},
year = {2005},
volume = {24},
pages = {1455 - 1468},
abstract = {Accurate and fast localization of a predefined target region inside
the patient is an important component of many image-guided therapy
procedures. This problem is commonly solved by registration of intraoperative
2-D projection images to 3-D preoperative images. If the patient
is not fixed during the intervention, the 2-D image acquisition
is repeated several times during the procedure, and the registration
problem can be cast instead as a 3-D tracking problem. To solve
the 3-D problem, we propose in this paper to apply 2-D region tracking
to first recover the components of the transformation that are in-plane
to the projections. The 2-D motion estimates of all projections
are backprojected into 3-D space, where they are then combined into
a consistent estimate of the 3-D motion. We compare this method
to intensity-based 2-D to 3-D registration and a combination of
2-D motion backprojection followed by a 2-D to 3-D registration
stage. Using clinical data with a fiducial marker-based gold-standard
transformation, we show that our method is capable of accurately
tracking vertebral targets in 3-D from 2-D motion measured in X-ray
projection images. Using a standard tracking algorithm (hyperplane
tracking), tracking is achieved at video frame rates but fails relatively
often (32% of all frames tracked with target registration error
(TRE) better than 1.2 mm, 82% of all frames tracked with TRE better
than 2.4 mm). With intensity-based 2-D to 2-D image registration
using normalized mutual information (NMI) and pattern intensity
(PI), accuracy and robustness are substantially improved. NMI tracked
82% of all frames in our data with TRE better than 1.2 mm and 96%
of all frames with TRE better than 2.4 mm. This comes at the cost
of a reduced frame rate, 1.7 s average processing time per frame
and projection device. Results using PI were slightly more accurate,
but required on average 5.4 s time per frame. These results are
still substantially faster than 2-D to 3-D registration. We conclude
that motion backprojection from 2-D motion tracking is an accurate
and efficient method for tracking 3-D target motion, but tracking
2-D motion accurately and robustly remains a challenge.},
owner = {Administrator},
timestamp = {2006.04.19},
}
@ARTICLE{Rollot2004,
author = {Y. Rollot and E. Lecuyer and H. Chateau and N. Crevier-Denoix},
title = {{D}evelopment of a 3{D} model of the equine distal forelimb and of
a {GRF} shoe for noninvasive determination of in vivo tendon and
ligament loads and strains.},
journal = {Equine Vet J},
year = {2004},
volume = {36},
pages = {677--682},
number = {8},
month = {Dec},
abstract = {REASONS FOR PERFORMING STUDY: As critical locomotion events (e.g.
high-speed and impacts during racing, jump landing) may contribute
to tendinopathies, in vivo recording of gaits kinematic and dynamic
parameters is essential for 3D reconstruction and analysis. OBJECTIVE:
To propose a 3D model of the forelimb and a ground reaction force
recording shoe (GRF-S) for noninvasively quantifying tendon and
ligament loads and strains. METHODS: Bony segments trajectories
of forelimbs placed under a power press were recorded using triads
of ultrasonic kinematic markers linked to the bones. Compression
cycles (from 500-6000 N) were applied for different hoof orientations.
Locations of tendon and ligament insertions were recorded with regard
to the triads. The GRF-S recorded GRF over the hoof wall and used
four 3-axis force sensors sandwiched between a support shoe and
the shoe to be tested. RESULTS: Validation of the model by comparing
calculated and measured superficial digital flexor tendon strains,
and evaluation of the role of proximal interphalangeal joint in
straight sesamoidean ligament and oblique sesamoidean ligament strains,
were successfully achieved. Objective comparisons of the 3 components
of GRF over the hoof for soft and hard grounds could be recorded,
where the s.d. of GRF norm was more important on hard ground at
walk and trot. CONCLUSIONS: Soft grounds (sand and rubber) dissipate
energy by lowering GRF amplitude and diminish bounces and vibrations
at impact. At comparable speed, stance phase was longer on soft
sand ground. POTENTIAL RELEVANCE: The conjugate use of the GRF-S
and the numerical model would help to quantify and analyse ground/shoe
combination on comfort, propulsion efficiency or lameness recovery.},
keywords = {Adult, Aged, Algorithms, Animals, Articular, Artifacts, Artificial
Intelligence, Arvicolinae, Automated, Autoradiography, Bacteriophage
mu, Basement Membrane, Bayes Theorem, Biol, Biological, Biological
Markers, Biomechanics, Biotin, Bone Plates, Bone Transplantation,
Brain, Calcium-Binding Protein, Calibration, Carcinoma, Cardiovascular,
Cell Differentiation, Cells, Cervical Vertebrae, Cluster Analysis,
Coculture Techniques, Comparative Study, Compressive Strength, Computer
Simulation, Computer-Assisted, Confocal, Coronary Vessels, Cryoelectron
Microscopy, Cultured, Cysteine Endopeptidases, DNA Transposable
Elements, Deafness, Dendrites, Dermis, Dextrans, Diagnosis, Diastema,
Dimerization, Diskectomy, Electroencephalography, Electron, Energy-Filtering
Transmission Electron, Engineering, Entorhinal Cortex, Epidermis,
Epithelium, Equipment Failure Analysis, Evoked Poten, Extracellular
Matrix, Extracellular Matrix Proteins, Extramural, Female, Fibroblasts,
Filtration, Finite Element Analysis, Floors and Floorcoverings,
Fluorescent Antibody Technique, Fluorescent Dyes, Fluorodeoxyglucose
F18, Forecasting, Forelimb, Gait, Gestational Age, Glucose, Hepatocellular,
Hippocampus, Histocytochemistry, Horses, Humans, Image Cytometry,
Image Enhancement, Image Interpretation, Image Processing, Imaging,
In Vitro, Indirect, Information Storage and Retrieval, Integrins,
Interneurons, Intervertebral Disk, Kidney, Knee Injuries, Knee Joint,
Ligaments, Likelihood Functions, Locomotion, Magnetic Resonance
Angiography, Magnetic Resonance Imaging, Male, Mechanical, Mice,
Microscopy, Middle Aged, Models, Molar, Molecular, Morphogenesis,
Movement, Myocardium, N.I.H., Nerve Fibers, Neural Pathways, Neurofilament
Proteins, Neurological, Non-P.H.S., Non-U.S. Gov't, Nude, Odontogenesis,
Organ Culture Techniques, Orthopedics, P.H.S., Para-Articular, Parahippocampal
Gyrus, Parvalbumins, Pattern Recognition, Permeability, Phosphorylase
Kinase, Photogrammetry, Plants, Pliability, Polyethylenes, Porosity,
Posterior Cruciate Ligament, Potyvirus, Presynaptic Terminals, Prostheses
and Implants, Prosthesis Design, Protein Structure, Rabbits, Radiopharmaceuticals,
Range of Motion, Rats, Reconstructive Surgical Proce, Reconstructive
Surgical Procedures, Reproducibility of Results, Research Support,
Respiration, Scanning Transmission, Sensitivity and Specificity,
Shoes, Signal Processing, Sinoatrial Node, Skin Neoplasms, Somatosensory,
Spleen, Staining and Labeling, Statistical, Stress, Subtraction
Technique, Tendons, Tensile Strength, Tertiary, Theoretical, Therapy,
Three-Dimensional, Tibia, Time Factors, Tissue Engineering, Toe
Joint, Tooth Germ, Transposases, Treatment Outcome, U.S. Gov't,
Ultracentrifugation, Viral Proteins, Visible Human Project, Vitamin
D-Dependent, Water Pollutants, Weight-Bearing, Wistar, X-Rays, dures,
ogical, tials, 15656495},
owner = {Administrator},
pmid = {15656495},
timestamp = {2006.04.20},
}
@ARTICLE{Roy-Chowdhury2005,
author = {Roy-Chowdhury, A.K.; Chellappa, R.;},
title = {Statistical bias in 3-D reconstruction from a monocular video},
journal = {Image Processing, IEEE Transactions},
year = {2005},
volume = {14},
pages = {1057 - 1062},
abstract = {The present state-of-the-art in computing the error statistics in
three-dimensional (3-D) reconstruction from video concentrates on
estimating the error covariance. A different source of error which
has not received much attention is the fact that the reconstruction
estimates are often significantly statistically biased. In this
paper, we derive a precise expression for the bias in the depth
estimate, based on the continuous (differentiable) version of structure
from motion (SfM). Many SfM algorithms, or certain portions of them,
can be posed in a linear least-squares (LS) framework Ax=b. Examples
include initialization procedures for bundle adjustment or algorithms
that alternately estimate depth and camera motion. It is a well-known
fact that the LS estimate is biased if the system matrix A is noisy.
In SfM, the matrix A contains point correspondences, which are always
difficult to obtain precisely; thus, it is expected that the structure
and motion estimates in such a formulation of the problem would
be biased. Existing results on the minimum achievable variance of
the SfM estimator are extended by deriving a generalized Cramer-Rao
lower bound. A detailed analysis of the effect of various camera
motion parameters on the bias is presented. We conclude by presenting
the effect of bias compensation on reconstructing 3-D face models
from rendered images.},
owner = {Administrator},
timestamp = {2006.04.19},
}
@ARTICLE{Russakoff2005,
author = {Russakoff, D.B.; Rohlfing, T.; Mori, K.; Rueckert, D.; Ho, A.; Adler,
J.R., Jr.; Maurer, C.R., Jr.;},
title = {Fast generation of digitally reconstructed radiographs using attenuation
fields with application to 2D-3D image registration},
journal = {Medical Imaging, IEEE Transactions},
year = {2005},
volume = {24},
pages = {1441 - 1454},
abstract = {Generation of digitally reconstructed radiographs (DRRs) is computationally
expensive and is typically the rate-limiting step in the execution
time of intensity-based two-dimensional to three-dimensional (2D-3D)
registration algorithms. We address this computational issue by
extending the technique of light field rendering from the computer
graphics community. The extension of light fields, which we call
attenuation fields (AFs), allows most of the DRR computation to
be performed in a preprocessing step; after this precomputation
step, DRRs can be generated substantially faster than with conventional
ray casting. We derive expressions for the physical sizes of the
two planes of an AF necessary to generate DRRs for a given X-ray
camera geometry and all possible object motion within a specified
range. Because an AF is a ray-based data structure, it is substantially
more memory efficient than a huge table of precomputed DRRs because
it eliminates the redundancy of replicated rays. Nonetheless, an
AF can require substantial memory, which we address by compressing
it using vector quantization. We compare DRRs generated using AFs
(AF-DRRs) to those generated using ray casting (RC-DRRs) for a typical
C-arm geometry and computed tomography images of several anatomic
regions. They are quantitatively very similar: the median peak signal-to-noise
ratio of AF-DRRs versus RC-DRRs is greater than 43 dB in all cases.
We perform intensity-based 2D-3D registration using AF-DRRs and
RC-DRRs and evaluate registration accuracy using gold-standard clinical
spine image data from four patients. The registration accuracy and
robustness of the two methods is virtually identical whereas the
execution speed using AF-DRRs is an order of magnitude faster.},
owner = {Administrator},
timestamp = {2006.04.19},
}
@ARTICLE{Schmid2005,
author = {O. A. Schmid},
title = {{D}ynamic accuracy survey of the new "single plane--single frame
3-{D} calibration" technique for use in biomedical applications.},
journal = {Biomed Tech (Berl)},
year = {2005},
volume = {50},
pages = {38--44},
number = {3},
month = {Mar},
abstract = {This study tested the accuracy of a new 3-D calibration technique
under dynamic situations. The technique was firstly introduced in
1998 for biomechanical human tests and calibrates 3-D volumes in
an easy way. It revealed superior in static tests to others. In
order to disclose dynamic accuracy two different tests were performed.
With this technique it does not matter whether redundant information
from multiple camera views is available or not. The mean error for
distances measured at 0.018\% for redundant information and at 0.012\%
for the non-redundant test in contrast to other procedures found
in literature, which attain values of 0.09\% and 0.04\% respectively.
The maximum error ranged there between 5.5\% and 17.9\%, whereas
the presented data reached values of 0.33\% and 0.48\%. The more
important angle error was at maximum 0.055\% (9 times less than
the most accurate in literature) and nearly zero for the mean error
value. The level of noise was the same in the test with redundancy
and 7.4 times lower in the present study than other commercial available
systems for non-redundant video information. The new procedure revealed
as a stable and very accurate 3-D reconstruction technique for a
variety of application not limited to biomedical applications.},
keywords = { Support, 80 and over, Adult, Aged, Algorithms, Angiography, Animals,
Anthropometry, Artifici, Artificial Intelligence, Atomic Force,
Automated, Basal Ganglia Hemorrhage, Biological, Bioprosthesis,
Bloo, Blood Vessels, Brain, Brain Mapping, Calibration, Catheterization,
Cell Culture Techniques, Cell Line, Cluster Analysis, Collagen,
Comparative Study, Computer Simulation, Computer-Aided Design, Computer-Assisted,
Craniofacial Abnormalities, Drug Combinations, Electron, Endothelial
Cells, English Abstract, Extramural, Feasibility Studies, Female,
Fluorodeoxyglucose F18, Fluoroscopy, Humans, Image Enhancement,
Image Interpretation, Imaging, Inbred BALB C, Information Storage
and Retrieval, Kinetics, Laminin, Male, Metabolic Clearance Rate,
Mice, Microscopy, Microtomy, Middle Aged, Models, N.I.H., Neovascularization,
Neurological, Non-P.H.S., Non-U.S. Gov't, Orbit, Organ Size, P.H.S.,
Pattern Recognition, Phantoms, Photography, Physiologic, Positr,
Prosthesis Design, Proteoglycans, Radiographic Image Enhancement,
Radiographic Image Interpretation, Radiopharmaceuticals, Rats, Reference
Standards, Reproducibility , Reproducibility of Results, Research,
Research Support, Retrospective Studies, Sensitivity and Specificity,
Software, Spiral Computed, Statistical, Stem Cells, Surgery, Three-Dimensional,
Tissue Distribution, Tissue Engineering, Tomography, Transmission,
U.S. Gov't, User-Computer Interface, Video Recording, al Intelligence,
d Vessel Prosthesis, of Results, on-Emission Tomography, 15832574},
owner = {Administrator},
pmid = {15832574},
timestamp = {2006.04.20},
}
@ARTICLE{Schmidt2005,
author = {Taly Gilat Schmidt and Rebecca Fahrig and Norbert J Pelc},
title = {{A} three-dimensional reconstruction algorithm for an inverse-geometry
volumetric {CT} system.},
journal = {Med Phys},
year = {2005},
volume = {32},
pages = {3234--3245},
number = {11},
month = {Nov},
abstract = {An inverse-geometry volumetric computed tomography (IGCT) system has
been proposed capable of rapidly acquiring sufficient data to reconstruct
a thick volume in one circular scan. The system uses a large-area
scanned source opposite a smaller detector. The source and detector
have the same extent in the axial, or slice, direction, thus providing
sufficient volumetric sampling and avoiding cone-beam artifacts.
This paper describes a reconstruction algorithm for the IGCT system.
The algorithm first rebins the acquired data into two-dimensional
(2D) parallel-ray projections at multiple tilt and azimuthal angles,
followed by a 3D filtered backprojection. The rebinning step is
performed by gridding the data onto a Cartesian grid in a 4D projection
space. We present a new method for correcting the gridding error
caused by the finite and asymmetric sampling in the neighborhood
of each output grid point in the projection space. The reconstruction
algorithm was implemented and tested on simulated IGCT data. Results
show that the gridding correction reduces the gridding errors to
below one Hounsfield unit. With this correction, the reconstruction
algorithm does not introduce significant artifacts or blurring when
compared to images reconstructed from simulated 2D parallel-ray
projections. We also present an investigation of the noise behavior
of the method which verifies that the proposed reconstruction algorithm
utilizes cross-plane rays as efficiently as in-plane rays and can
provide noise comparable to an in-plane parallel-ray geometry for
the same number of photons. Simulations of a resolution test pattern
and the modulation transfer function demonstrate that the IGCT system,
using the proposed algorithm, is capable of 0.4 mm isotropic resolution.
The successful implementation of the reconstruction algorithm is
an important step in establishing feasibility of the IGCT system.},
keywords = {80 and over, Adolescent, Adult, Aged, Algorithms, Artifacts, Comparative
Study, Computer-Assisted, Echo-Planar Imaging, Extramural, Female,
Humans, Image Processing, Imaging, Magnetic Resonance Imaging, Male,
Melanoma, Middle Aged, Models, N.I.H., Non-U.S. Gov't, Observer
Variation, Phantoms, Photons, Protons, Radiation, Radiographic Image
Enhancement, Radiographic Image Interpretation, Radiotherapy Planning,
Research Support, Scattering, Software, Statistical, Theoretical,
Three-Dimensional, Time Factors, Tomography, Tumor Burden, Ultrasonics,
Uveal Neoplasms, Water, X-Ray Computed, 16370414},
owner = {Administrator},
pmid = {16370414},
timestamp = {2006.04.20},
}
@ARTICLE{Senin2006,
author = {Nicola Senin and Roberto Groppetti and Luciano Garofano and Paolo
Fratini and Michele Pierni},
title = {{T}hree-dimensional surface topography acquisition and analysis for
firearm identification.},
journal = {J Forensic Sci},
year = {2006},
volume = {51},
pages = {282--295},
number = {2},
month = {Mar},
abstract = {In the last decade, computer-based systems for the comparison of microscopic
firearms evidence have been the subject of considerable research
work because of their expected capability of supporting the firearms
examiner through the automated analysis of large amounts of evidence.
The Integrated Ballistics Identification System, which is based
on a two-dimensional representation of the specimen surface, has
been widely adopted in forensic laboratories worldwide. More recently,
some attempts to develop systems based on three-dimensional (3D)
representations of the specimen surface have been made, both in
the literature and as industrial products, such as BulletTRAX-3D,
but fundamental limitations in achieving fully automated identification
remain. This work analyzes the advantages and disadvantages of a
3D-based approach by proposing an approach and a prototype system
for firearms evidence comparison that is based on the acquisition
and analysis of the 3D surface topography of specimens, with particular
reference to cartridge cases. The concept of 3D virtual comparison
microscope is introduced, whose purpose is not to provide fully
automated identification, but to show how the availability of 3D
shape information can provide a whole new set of verification means,
some of them being described and discussed in this work, specifically,
visual enhancement tools and quantitative measurement of shape properties,
for supporting, not replacing, the firearm examiner in reaching
the final decision.},
doi = {10.1111/j.1556-4029.2006.00048.x},
keywords = {16566761},
owner = {Administrator},
pii = {JFO48},
pmid = {16566761},
timestamp = {2006.04.21},
url = {http://dx.doi.org/10.1111/j.1556-4029.2006.00048.x},
}
@CONFERENCE{Silva2003a,
author = {Silva, L.C.; Petraglia, A.; Petraglia, M.R.;},
title = {Stereo vision system for remote monitoring and 3-D reconstruction},
booktitle = {Signal Processing and Its Applications, 2003. Proceedings. Seventh
International Symposium on
Volume 1, 1-4 July 2003 Page(s):9 - 12 vol.1},
year = {2003},
abstract = {A three-dimensional vision system for inspection activities of installations
and equipment by remotely operated vehicles is presented. A real-time
vision system is used for the acquisition of stereo pairs of images
which, after preprocessing, are submitted to a reconstruction procedure
in order to obtain 3-D coordinates and to perform dimensioning of
objects. A minimization procedure applied to a robust least-squares
implementation of the camera system orientation is described. Experimental
results are shown to verify the effectiveness of the proposed techniques.},
owner = {Administrator},
timestamp = {2006.04.19},
}
@INPROCEEDINGS{slabaughsurvey,
author = {G. Slabaugh and B. Culbertson and T. Malzbender and R. Schafer},
title = {A Survey of Methods for Volumetric Scene Reconstruction from Photographs},
pages = {81--100},
abstract = {Scene reconstruction, the task of generating a 3D model of a scene
given multiple 2D photographs taken of the scene, is an old and
difficult problem in computer vision. Since its introduction, scene
reconstruction has found application in many fields, including robotics,
virtual reality, and entertainment. Volumetric models are a natural
choice for scene reconstruction. Three broad classes of volumetric
reconstruction techniques have been developed based on geometric
intersections, color...},
citeseerurl = {http://citeseer.ist.psu.edu/slabaugh01survey.html},
url = {citeseer.ist.psu.edu/slabaugh01survey.html},
}
@BOOK{Soille.2003.,
title = {Morphological Image Analysis. 2nd edition},
publisher = {Springer-Verlag, Heidelberg},
year = {2003.},
author = {P. Soille.},
owner = {Administrator},
timestamp = {2006.04.19},
}
@CONFERENCE{Tai-Peng2005,
author = {Tai-Peng Tian, Stan Sclaroff},
title = {Handsignals Recognition From Video Using 3D Motion Capture Data},
year = {2005},
volume = {2},
abstract = {Hand signals are commonly used in applications such as giving instructions
to a pilot for airplane takeoff or direction of a crane operator
by a foreman on the ground. A new algorithm for recognizing hand
signals from a single camera is proposed. Typically, tracked 2D
feature positions of hand signals are matched to 2D training images.
In contrast, our approach matches the 2D feature positions to an
archive of 3D motion capture sequences. The method avoids explicit
reconstruction of the 3D articulated motion from 2D image features.
Instead, the matching between the 2D and 3D sequence is done by
backprojecting the 3D motion capture data onto 2D. Experiments demonstrate
the effectiveness of the approach in an example application: recognizing
six classes of basketball referee hand signals in video.},
journal = {IEEE Workshop on Motion and Video Computing (WACV/MOTION'05)},
owner = {Administrator},
timestamp = {2006.04.19},
}
@ARTICLE{Tognola2003,
author = {Tognola, G.; Parazzini, M.; Ravazzani, P.; Grandori, F.; Svelto,
C.;},
title = {3-D acquisition and quantitative measurements of anatomical parts
by optical scanning and image reconstruction from unorganized range
data},
journal = {Instrumentation and Measurement, IEEE Transactions},
year = {2003},
volume = {52},
pages = {1665 - 1673},
abstract = {A simple method for direct acquisition of a cloud of points from an
object surface is presented together with a novel surface reconstruction
algorithm used to obtain an explicit three-dimensional (3-D) model
for the measured object. This technique is aimed at relatively accurate
but simple and reliable 3-D reconstruction of anatomical parts for
biomedical applications. A prototype 3-D scanning system is presented:
the physical acquisition system and the image reconstruction algorithm
are described. Measurements on objects of well-known geometrical
features and dimensions are performed in order to assess accuracy
and repeatability levels of this 3-D acquisition system. Robustness
to noise of the proposed reconstruction algorithm is determined
by simulation with synthetic test surfaces. Finally, the first measurements
(acquisition + reconstruction) of closed surfaces from human organs
are reported.},
owner = {Administrator},
timestamp = {2006.04.19},
}
@ARTICLE{Tomazevic2005,
author = {Tomazevic, D.; Likar, B.; Pernus, F.;},
title = {3-D/2-D registration by integrating 2-D information in 3-D},
journal = {Medical Imaging, IEEE Transactions},
year = {2005},
volume = {25},
pages = {17 - 27},
abstract = {In image-guided therapy, high-quality preoperative images serve for
planning and simulation, and intraoperatively as "background", onto
which models of surgical instruments or radiation beams are projected.
The link between a preoperative image and intraoperative physical
space of the patient is established by image-to-patient registration.
In this paper, we present a novel 3-D/2-D registration method. First,
a 3-D image is reconstructed from a few 2-D X-ray images and next,
the preoperative 3-D image is brought into the best possible spatial
correspondence with the reconstructed image by optimizing a similarity
measure (SM). Because the quality of the reconstructed image is
generally low, we introduce a novel SM, which is able to cope with
low image quality as well as with different imaging modalities.
The novel 3-D/2-D registration method has been evaluated and compared
to the gradient-based method (GBM) using standardized evaluation
methodology and publicly available 3-D computed tomography (CT),
3-D rotational X-ray (3DRX), and magnetic resonance (MR) and 2-D
X-ray images of two spine phantoms, for which gold standard registrations
were known. For each of the 3DRX, CT, or MR images and each set
of X-ray images, 1600 registrations were performed from starting
positions, defined as the mean target registration error (mTRE),
randomly generated and uniformly distributed in the interval of
0-20 mm around the gold standard. The capture range was defined
as the distance from gold standard for which the final TRE was less
than 2 mm in at least 95% of all cases. In terms of success rate,
as the function of initial misalignment and capture range the proposed
method outperformed the GBM. TREs of the novel method and the GBM
were approximately the same. For the registration of 3DRX and CT
images to X-ray images as few as 2-3 X-ray views were sufficient
to obtain approximately 0.4 mm TREs, 7-9 mm capture range, and 80%-90%
of successful registrations. To obtain similar results for MR to
X-ray registrations, an image, reconstructed from at least 11 X-ray
images was required. Reconstructions from more than 11 images had
no effect on the registration results.},
owner = {Administrator},
timestamp = {2006.04.19},
}
@CONFERENCE{Vicar2004,
author = {Vicar, D.M.; Ford, S.; Borland, E.; Rixon, R.; Patterson, J.; Cockshott,
P.},
title = {3D performance capture for facial animation},
booktitle = {3D Data Processing, Visualization and Transmission, 2004. 3DPVT 2004.
Proceedings. 2nd International Symposium on 6-9 Sept. 2004},
year = {2004},
abstract = {This work describes how a photogrammetry based 3D capture system can
be used as an input device for animation. The 3D Dynamic Capture
System is used to capture the motion of a human face, which is extracted
from a sequence of 3D models captured at TV frame rate. Initially
the positions of a set of landmarks on the face are extracted. These
landmarks are then used to provide motion data in two different
ways. First, a high level description of the movements is extracted,
and these can be used as input to a procedural animation package
(i.e. CreaToon). Second the landmarks can be used as registration
points for a conformation process where the model to be animated
is modified to match the captured model. This approach gives a new
sequence of models, which have the structure of the drawn model
but the movement of the captured sequence.},
owner = {Administrator},
timestamp = {2006.04.19},
}
@ARTICLE{Virador48,
author = {Virador, P.R.G.; Moses, W.W.; Huesman, R.H.; Qi, J.;},
title = {3-D reconstruction in PET cameras with irregular sampling and depth
of interaction},
journal = {Nuclear Science, IEEE Transactions},
year = {2001},
volume = {48},
pages = {1524 - 1529},
abstract = {We present 3D reconstruction algorithms that
address fully 3D tomographic reconstruction for a septa-less,
stationary, and rectangular camera. The field of view (FOV)
encompasses the entire volume enclosed by detector modules
capable of measuring depth of interaction (DOI). The Filtered
Backprojection based algorithms incorporate DOI, accommodate
irregular sampling, and minimize interpolation in the
data by defining lines of response between the measured interaction
points. We use fixed-width, evenly spaced radial bins in
order to use the FFT, but use irregular angular sampling to
minimize the number of unnormalizable zero efficiency
sinogram bins. To address persisting low efficiency bins, we
perform 2D nearest neighbor radial smoothing, employ a semiiterative
procedure to estimate the unsampled data, and mash
the “in plane” and the first oblique projections to reconstruct
the 2D image in the 3DRP algorithm. We present artifact free,
essentially spatially isotropic images of Monte Carlo data
with FWHM resolutions of 1.5 mm, 2.3 mm, and 3.1 mm at the
center, in the bulk, and in the corners of the FOV respectively.},
owner = {Administrator},
pdf = {http://breast.lbl.gov/~wwwinstr/publications/Papers/LBNL-47102.pdf},
timestamp = {2006.04.19},
}
@ARTICLE{Vouldis2005,
author = {Angelos T Vouldis and Costas N Kechribaris and Theofanis A Maniatis
and Konstantina S Nikita and Nikolaos K Uzunoglu},
title = {{I}nvestigating the enhancement of three-dimensional diffraction
tomography by using multiple illumination planes.},
journal = {J Opt Soc Am A Opt Image Sci Vis},
year = {2005},
volume = {22},
pages = {1251--1262},
number = {7},
month = {Jul},
abstract = {The three dimensional (3-D) extension of the two well-known diffraction
tomography algorithms, namely, direct Fourier interpolation (DFI)
and filtered backpropagation (FBP), are presented and the problem
of the data needed for a full 3-D reconstruction is investigated.
These algorithms can be used efficiently to solve the inverse scattering
problem for weak scatterers in the frequency domain under the first-order
Born and Rytov approximations. Previous attempts of 3-D reconstruction
with plane-wave illumination have used data obtained with the incident
direction restricted at the xy plane. However, we show that this
restriction results in the omission of the contribution of certain
spatial frequencies near the omegaz axis for the final reconstruction.
The effect of this omission is studied by comparing the results
of reconstruction with and without data obtained from other incident
directions that fill the spatial frequency domain. We conclude that
the use of data obtained for incident direction in only the xy plane
is sufficient to achieve a satisfactory quality of reconstruction
for a class of objects presenting smooth variation along the z axis,
while abrupt variations along the z axis cannot be imaged. This
result should be taken into account in the process of designing
the acquisition geometry of a tomography scanner.},
keywords = {Algorithms, Comparative Study, Computer-Assisted, Image Enhancement,
Image Interpretation, Imaging, Information Storage and Retrieval,
Lighting, Optical Coherence, Refractometry, Reproducibility of Results,
Sensitivity and Specificity, Three-Dimensional, Tomography, 16053146},
owner = {Administrator},
pmid = {16053146},
timestamp = {2006.04.20},
}
@CONFERENCE{Wei2004,
author = {Wei Jiang; Sugimoto, S.; Okutomi, M.;},
title = {Omnidirectional 3D reconstruction using stereo multi-perspective
panoramas},
booktitle = {SICE 2004 Annual Conference
Volume 2, 4-6 Aug. 2004 Page(s):1128 - 1133 vol. 2},
year = {2004},
owner = {Administrator},
timestamp = {2006.04.19},
}
@ARTICLE{Wilczkowiak2005,
author = {Marta Wilczkowiak and Peter Sturm and Edmond Boyer},
title = {{U}sing geometric constraints through parallelepipeds for calibration
and 3{D} modeling.},
journal = {IEEE Trans Pattern Anal Mach Intell},
year = {2005},
volume = {27},
pages = {194--207},
number = {2},
month = {Feb},
abstract = {This paper concerns the incorporation of geometric information in
camera calibration and 3D modeling. Using geometric constraints
enables more stable results and allows us to perform tasks with
fewer images. Our approach is motivated and developed within a framework
of semi-automatic 3D modeling, where the user defines geometric
primitives and constraints between them. It is based on the observation
that constraints, such as coplanarity, parallelism, or orthogonality,
are often embedded intuitively in parallelepipeds. Moreover, parallelepipeds
are easy to delineate by a user and are well adapted to model the
main structure of, e.g., architectural scenes. In this paper, first
a duality that exists between the shape parameters of a parallelepiped
and the intrinsic parameters of a camera is described. Then, a factorization-based
algorithm exploiting this relation is developed. Using images of
parallelepipeds, it allows us to simultaneously calibrate cameras,
recover shapes of parallelepipeds, and estimate the relative pose
of all entities. Besides geometric constraints expressed via parallelepipeds,
our approach simultaneously takes into account the usual self-calibration
constraints on cameras. The proposed algorithm is completed by a
study of the singular cases of the calibration method. A complete
method for the reconstruction of scene primitives that are not modeled
by parallelepipeds is also briefly described. The proposed methods
are validated by various experiments with real and simulated data,
for single-view as well as multiview cases.},
keywords = {Adult, Aged, Algorithms, Animals, Articular, Artificial Intelligence,
Arvicolinae, Automated, Autoradiography, Bacteriophage mu, Biological,
Biological Markers, Biomechanics, Biotin, Bone Plates, Bone Transplantation,
Brain, Calcium-Binding Protein, Calibration, Carcinoma, Cardiovascular,
Cervical Vertebrae, Cluster Analysis, Comparative Study, Compressive
Strength, Computer Simulation, Computer-Assisted, Confocal, Coronary
Vessels, Cryoelectron Microscopy, Cysteine Endopeptidases, DNA Transposable
Elements, Deafness, Dendrites, Dextrans, Diagnosis, Diastema, Dimerization,
Diskectomy, Electron, Energy-Filtering Transmission Electron, Entorhinal
Cortex, Epithelium, Equipment Failure Analysis, Extramural, Female,
Finite Element Analysis, Fluorescent Antibody Technique, Fluorescent
Dyes, Fluorodeoxyglucose F18, Gestational Age, Glucose, Hepatocellular,
Hippocampus, Histocytochemistry, Humans, Image Cytometry, Image
Enhancement, Image Interpretation, Image Processing, Imaging, In
Vitro, Indirect, Information Storage and Retrieval, Interneurons,
Intervertebral Disk, Kidney, Knee Injuries, Knee Joint, Magnetic
Resonance Angiography, Magnetic Resonance Imaging, Male, Mechanical,
Mice, Microscopy, Middle Aged, Models, Molar, Molecular, Movement,
Myocardium, N.I.H., Nerve Fibers, Neural Pathways, Neurofilament
Proteins, Neurological, Non-U.S. Gov't, Nude, Odontogenesis, Orthopedics,
P.H.S., Para-Articular, Parahippocampal Gyrus, Parvalbumins, Pattern
Recognition, Phosphorylase Kinase, Photogrammetry, Plants, Pliability,
Polyethylenes, Posterior Cruciate Ligament, Potyvirus, Presynaptic
Terminals, Prostheses and Implants, Prosthesis Design, Protein Structure,
Rabbits, Radiopharmaceuticals, Range of Motion, Rats, Reconstructive
Surgical Proce, Reconstructive Surgical Procedures, Reproducibility
of Results, Research Support, Respiration, Scanning Transmission,
Sensitivity and Specificity, Signal Processing, Sinoatrial Node,
Skin Neoplasms, Spleen, Staining and Labeling, Statistical, Stress,
Subtraction Technique, Tendons, Tensile Strength, Tertiary, Theoretical,
Therapy, Three-Dimensional, Tibia, Time Factors, Tooth Germ, Transposases,
Treatment Outcome, U.S. Gov't, Ultracentrifugation, Viral Proteins,
Visible Human Project, Vitamin D-Dependent, Weight-Bearing, Wistar,
X-Rays, dures, 15688557},
owner = {Administrator},
pmid = {15688557},
timestamp = {2006.04.20},
}
@CONFERENCE{Wolf2001,
author = {Wolf, L.; Shashua, A.;},
title = {Affine 3-D reconstruction from two projective images of independently
translating planes},
booktitle = {Computer Vision, 2001. ICCV 2001. Proceedings. Eighth IEEE International
Conference on
Volume 2, 7-14 July 2001 Page(s):238 - 244 vol.2},
year = {2001},
abstract = {Consider two views of a multi-body scene consisting of k planar bodies
moving in pure translation one relative to the other. We show that
the fundamental matrices, one per body, live in a 3-dimensional
subspace, which when represented as a step-3 extensor is the common
transversal on the collection of extensors defined by the homograph
matrices H1,...,Hk of the moving planes. We show that as much as
five bodies are necessary for recovering the common transversal
from the homograph matrices, from which we show how to recover the
fundamental matrices and the affine calibration between the two
cameras},
owner = {Administrator},
timestamp = {2006.04.19},
}
@ARTICLE{Xiao2005,
author = {Yi Jun Xiao and Y. F. Li},
title = {{O}ptimized stereo reconstruction of free-form space curves based
on a nonuniform rational {B}-spline model.},
journal = {J Opt Soc Am A Opt Image Sci Vis},
year = {2005},
volume = {22},
pages = {1746--1762},
number = {9},
month = {Sep},
abstract = {Analytical reconstruction of 3D curves from their stereo images is
an important issue in computer vision. We present an optimization
framework for such a problem based on a nonuniform rational B-spline
(NURBS) curve model that converts reconstruction of a 3D curve into
reconstruction of control points and weights of a NURBS representation
of the curve, accordingly bypassing the error-prone point-to-point
correspondence matching. Perspective invariance of NURBS curves
and constraints deduced on stereo NURBS curves are employed to formulate
the 3D curve reconstruction problem into a constrained nonlinear
optimization. A parallel rectification technique is then adopted
to simplify the constraints, and the Levenberg-Marquardt algorithm
is applied to search for the optimal solution of the simplified
problem. The results from our experiments show that the proposed
framework works stably in the presence of different data samplings,
randomly posed noise, and partial loss of data and is potentially
suitable for real scenes.},
keywords = {Algorithms, Animals, Artificial Intelligence, Blood Vessels, Cardiovascular
System, Computer Simulatio, Computer-Assisted, Confocal, Dental
Models, Fluorescence, Humans, Image Enhancement, Image Interpretation,
Image Processing, Imaging, Information Storage and Retrieval, Microscopy,
Models, Non-U.S. Gov't, Numerical Analysis, Photogrammetry, Research
Support, Statistical, Three-Dimensional, Zebrafish, n, 16211801},
owner = {Administrator},
pmid = {16211801},
timestamp = {2006.04.20},
}
@ARTICLE{Xiaoguang2006,
author = {Xiaoguang Lu; Jain, A.K.; Colbry, D.;},
title = {Matching 2.5D face scans to 3D models},
journal = {Pattern Analysis and Machine Intelligence, IEEE Transactions},
year = {2006},
volume = {28},
pages = {31 - 43},
owner = {Administrator},
timestamp = {2006.04.19},
}
@CONFERENCE{Xu2005,
author = {Xu, J.; Chutatape, O.;},
title = {3-D Optic Disk Reconstruction Via Combined Registration and Inclusion
of Eye Optical Effects},
booktitle = {Engineering in Medicine and Biology Society, 2005. IEEE-EMBS 2005.
27th Annual International Conference of the 01-04 Sept. 2005 Page(s):3284
- 3287},
year = {2005},
abstract = {This paper describes a method of three-dimensional (3-D) optic disk
reconstruction from a pair of stereo images. This is achieved through
the implementation of various procedures that further enhance the
accuracy including camera calibration, constraint-based combined
registration, dense-depth recovery, and eye-optics inclusion. A
combination of two registration methods is applied to precisely
detect the correspondences, which are then converted into depths.
The optical effect of light media within the eyeball is considered.
A new method is proposed to calibrate and integrate this effect
into the reconstruction process to provide an accurate 3-D image
of optic disk. Compared with the result from Heidelberg Retina Tomograph
(HRT), the 3-D image reconstructed by the proposed method shows
good consistency and compatibility which indicates that it could
be used as an alternative mode of 3-D viewing of the optic nerve
head.},
owner = {Administrator},
timestamp = {2006.04.19},
}
@CONFERENCE{Yatagai2004,
author = {Yatagai, T.; Sando, Y.; Itoh, M.;},
title = {Three-dimensional full-color display of real existing objects using
computer-generated holograms},
booktitle = {Lasers and Electro-Optics Society, 2004. LEOS 2004. The 17th Annual
Meeting of the IEEE
Volume 1, 7-11 Nov. 2004 Page(s):190 - 191 Vol.1
Digital Object Identifier 10.1109/LEOS.2004.1363175},
year = {2004},
abstract = {This work describes new method for the 3-D reconstruction of full-color
real existing objects based on the previous report. In addition,
methods for deciding certain parameters such as angular ranges,
angular increments and projection numbers are presented for the
purposes of making the magnifications constant for each color. Verification
of this method by both numerical and optical reconstruction is also
presented.},
owner = {Administrator},
timestamp = {2006.04.19},
}
@ARTICLE{Ying2005,
author = {Ying Kin Yu; Kin Hong Wong; Chang, M.M.Y.;},
title = {Recursive three-dimensional model reconstruction based on Kalman
filtering},
journal = {Systems, Man and Cybernetics, Part B, IEEE Transactions},
year = {2005},
volume = {35},
pages = {587 - 592},
abstract = {A recursive two-step method to recover structure and motion from image
sequences based on Kalman filtering is described in this paper.
The algorithm consists of two major steps. The first step is an
extended Kalman filter (EKF) for the estimation of the object's
pose. The second step is a set of EKFs, one for each model point,
for the refinement of the positions of the model features in the
three-dimensional (3-D) space. These two steps alternate from frame
to frame. The initial model converges to the final structure as
the image sequence is scanned sequentially. The performance of the
algorithm is demonstrated with both synthetic data and real-world
objects. Analytical and empirical comparisons are made among our
approach, the interleaved bundle adjustment method, and the Kalman
filtering-based recursive algorithm by Azarbayejani and Pentland.
Our approach outperformed the other two algorithms in terms of computation
speed without loss in the quality of model reconstruction.},
owner = {Administrator},
timestamp = {2006.04.19},
}
@ARTICLE{Younis2002,
author = {Waheed A Younis and Stergios Stergiopoulos and David Havelock and
Julius Grodski},
title = {{N}ondestructive imaging of shallow buried objects using acoustic
computed tomography.},
journal = {J Acoust Soc Am},
year = {2002},
volume = {111},
pages = {2117--2127},
number = {5 Pt 1},
month = {May},
abstract = {The nondestructive three-dimensional acoustic tomography concept of
the present investigation combines computerized tomography image
reconstruction algorithms using acoustic diffracting waves together
with depth information to produce a three-dimensional (3D) image
of an underground section. The approach illuminates the underground
area of interest with acoustic plane waves of frequencies 200-3000
Hz. For each transmitted pulse, the reflected-refracted signals
are received by a line array of acoustic sensors located at a diametrically
opposite point from the acoustic source line array. For a stratified
underground medium and for a given depth, which is represented by
a time delay in the received signal, a horizontal tomographic 2D
image is reconstructed from the received projections. Integration
of the depth dependent sequence of cross-sectional reconstructed
images provides a complete three-dimensional overview of the inspected
terrain. The method has been tested with an experimental system
that consists of a line array of four-acoustic sources, providing
plane waves, and a receiving line array of 32-acoustic sensors.
The results indicate both the potential and the challenges facing
the new methodology. Suggestions are made for improved performance,
including an adaptive noise cancellation scheme and a numerical
interpolation technique.},
keywords = {Acoustics, Algorithms, Humans, Time Factors, Tomography, X-Ray Computed,
12051432},
owner = {Administrator},
pmid = {12051432},
timestamp = {2006.04.20},
}
@ARTICLE{Yu2005a,
author = {Ying Kin Yu and Kin Hong Wong and Michael Ming Yuen Chang},
title = {{R}ecursive three-dimensional model reconstruction based on {K}alman
filtering.},
journal = {IEEE Trans Syst Man Cybern B Cybern},
year = {2005},
volume = {35},
pages = {587--592},
number = {3},
month = {Jun},
abstract = {A recursive two-step method to recover structure and motion from image
sequences based on Kalman filtering is described in this paper.
The algorithm consists of two major steps. The first step is an
extended Kalman filter (EKF) for the estimation of the object's
pose. The second step is a set of EKFs, one for each model point,
for the refinement of the positions of the model features in the
three-dimensional (3-D) space. These two steps alternate from frame
to frame. The initial model converges to the final structure as
the image sequence is scanned sequentially. The performance of the
algorithm is demonstrated with both synthetic data and real-world
objects. Analytical and empirical comparisons are made among our
approach, the interleaved bundle adjustment method, and the Kalman
filtering-based recursive algorithm by Azarbayejani and Pentland.
Our approach outperformed the other two algorithms in terms of computation
speed without loss in the quality of model reconstruction.},
keywords = {80 and over, Acceleration, Aged, Algorithms, Ambulatory, Articular,
Artificial Intelligence, Automated, Biological, Brain, Brain Diseases,
Breast, Cadaver, Cluster Analysis, Comparative Study, Computer Graphics,
Computer Simulation, Computer-Assisted, Electrodes, Electroencephalography,
English Abstract, Epilepsy, Equipment Design, Equipment Failure
Analysis, Extramural, Feasibility Studies, Feedback, Female, Gait,
Head, Humans, Image Enhancement, Image Interpretation, Image Processing,
Imaging, Immobilization, Information Storage and Retrieval, Ligaments,
Lighting, Lunate Bone, Magnetic Resonance Imaging, Male, Middle
Aged, Models, Monitoring, Movement, N.I.H., Non-U.S. Gov't, Numerical
Analysis, Optical Coherence, P.H.S., Pattern Recognition, Physical
Examination, Posture, Reconstructive Surgical Procedures, Refractometry,
Reproducibility o, Reproducibility of Results, Research Support,
Sensitivity and Specificity, Signal Processing, Skull, Software,
Statistical, Stereotaxic Techniques, Subtraction Technique, Surgery,
Systems Theory, Three-Dimensional, Tomography, Transducers, U.S.
Gov't, X-Ray Computed, f Results, 15971927},
owner = {Administrator},
pmid = {15971927},
timestamp = {2006.04.20},
}
@ARTICLE{Yu2005,
author = {Yun-Qin Yu and Hu Peng and Bo Yu and Wen-Xiang Zhan and Ansheng Yu},
title = {[{T}hree-dimensional reconstruction research on {M}ingmen ({GV} 4)]},
journal = {Zhongguo Zhen Jiu},
year = {2005},
volume = {25},
pages = {411--413},
number = {6},
month = {Jun},
abstract = {OBJECTIVE: To show the space structures of Mingmen (GV 4) area and
its adjacent tissues. METHODS: A frozen female corpse was cut into
about 0.5 mm thick sections with a high-speed steel plane machine
and photographed with digital and optical camera. Two 2-D transverse
phase picture data sets were obtained and then were sequenced, matched,
modified and divided. The 3-D reconstruction software was used to
reconstruct the outline form of the lumbar part containing Mingmen
(GV 4) to attain transverse phase picture data sets (3 022 sheets,
0.57 mm in thickness). The sagittal, coronal and different oblique
plane were cut and the tissue structures in these pictures were
analyzed. Thus, the reconstruction data sets were obtained. CONCLUSION:
After the structures of Mingmen (GV 4) were reconstructed with computer,
the form of Mingmen (GV 4) can be dynamically observed from any
angle and the space construction law of gross form of Mingmen (GV
4) can be proved.},
keywords = {'t, Computer-Assisted, Confocal, Image Processing, Imaging, Microscopy,
Morphogenesis, Non-U.S. Gov, Protoplasts, Research Support, Three-Dimensional,
Tobacco, Vacuoles, 16309086},
owner = {Administrator},
pmid = {16309086},
timestamp = {2006.04.20},
}