XBit 4.01 Release Announcement

XBit is a Tcl extension for image and map processing. The current
release is for Windows and works with Tcl7.6 throught Tcl8.4.

The main features of XBit include 

Image processing capabilities:

 1) Image rendering widgets with zoom in/out and RGB composition; 
 2) FFT analysis with low/high pass filters;
 3) Convolution with specified filters;
 4) Geometric rectification;
 5) Principal component analysis;
 6) Multispectral supervised/unsupervized classification;
 7) Color/spectral calibration;
 8) Image acquisition (TWAIN or customized modules);
 9) JPEG, TIFF, GIF, DICOM, PPM, DIB, PPM, BSQ, BIL, BIP image formats;
10) Support image processing in Tcl expression;
11) Support multispectral/hyperspectral image processing;
12) 8Bit, 16Bit, and 32bit integer/float image data processing;
13) Video stream rendering;

Mapping capabilities:

 1) Tcl interface to Shape and dBase objects;
 2) Tcl interface to PROJ package for geographic map projection;
 3) GCANVAS widget to display shape/image objects (for Tcl 8.0 or later); 
 4) Table widget for tabular data display;

Other features:

 1) Map/image printing;
 2) Tcl interface to OpenGL;
 3) Tcl interface to TerraServer;
 4) Variety of Tk widgets;

Applications:

 1) General image data processing, analysis and presentation
 2) Geographic infomation systems;
 3) Remote Sensing;

License:
A license file is included in the distribution.  To use XBit for
commercial applications, an additional license option file is required. 
There are five different types of license option files: 

 1) Basic image processing options;
 2) Analytical image FFT processing options;
 3) GIS application options;
 4) Remote Sensing application options;
 5) full options;

License option files define different XBit software products 
for different applications. Free-trial license option files are 
available upon request.

A license for non-commercial use is pre-included in the released 
distribution.  No license option files is required for non-commercial 
use. The distribution has all the functions specified in license 
option files 1 through 4, but is subject to the following restriction:

Image dimension limits: 640 * 512
Image band number limits: 7
FFT image dimension limits: 256 * 256
OpenGL object item limits: 196608 (256 * 256 * 3)
GLM object vertex limits: 8192
Widget Window size limits: 640 * 480
Gcanvas item limits: 1024

