Errata

The book has been a big success. The second print came out in December 2001. Thanks to all those who have sent the comments, suggestions, and corrections. 
 
• Page 91 (Corrected in the 2nd print)

In the initApp() method of ImageViewerApplet, change Loader loader = new Loader()  to loader = new Loader()
Make this change in the source code in src/chapter3/Viewer as well.
 
• Page 131

Line number 7:  Change  P2 =  (T1+T2). P  to  P2 = (T1 . T2) .P
Read the next sentence as "... the resultant translation is multiplicative."
 
• Page 161

In the code snippet, change JOIN_ROUND to BasicStroke.JOIN_ROUND.
 
• Page 163

In the fourt paragraph from the bottom, read "The PaintContext interface extends the Transparency interface  ..." as "The ColorModel class extends the Transparency interface ..."
 
• Page 166

Replace the last method in the list of five methods in the "renderingHints Attribute" paragraph with the following:
public void setRenderingHint(RenderingHints.Key hintKey, Object hintValue)

In the code snippet in the next paragraph, add "RenderingHints." to each of the parmeters passed to the RenderingHints constructor. For example, the first parameter should read as RenderingHints.KEY_RENDERING.
 

• Page 256

In the section titled PageFormat class, read "The methods for setting page dimensions are" as "The methods for getting page dimensions are."

• Page 355 (Corrected in the 2nd print)

In Listing 8.6 (i.e., the createBandedRGBImage() method), do the following:
• add the following statement before  for (int i=0; i<numbits;i++):

int[] bankindices = new bankindices[numbits];

• In the loop, for (int i=0; i<numbits;i++), replace bandoffsets[i] = i;  with
bankindices[i] = i;
bandoffsets[i] = 0;
• In the BandSampleModel constructore, replace the arguments

         new  int[]  {0,1,2},   //Bank indices
         new int[]   {0,1,2} ); // Band offsets
with   bankindices, //Bank indices
         bandoffsets); // Band offsets


Click here for the entire createBandedRGBImage() method, which contains the above changes.
 

• Page 463. In the last line but one, replace java with javac. (Corrected in the 2nd print)

 
• In the chapters 10 through 14, some classes won't compile with JAI 1.1. Download JAI 1.0.2 from the JAI home page. See below for downloading JAI 1.1 compatible code.
 
• If you are using JDK 1.4, the classes that use com.vistech.imageviewer.DisplayMode won't compile with JDK 1.4 due to the name conflict with the new class, java.awt.DisplayMode. To overcome this problem, you have two options:
1. Use JDK 1.3
2. Insert   import com.vistech.imageviewer.DisplayMode at the end of the import statements in the following classes:

1. app.ImageViewer2D (Chapter 6 )
2. app.ImageManip2D  (Chapter 7)
3. app.ImageEnhancer  (Chapter 8)
4. com.vistech.roi.ROIManager (Chapter 9)
5. com.vistech.jai.render.ImageManipulator (Chapter 12)
See the next item for downloading JDK 1.4 compatible code.
 
• Download  the latest source code (chapter 5 through 14), class files, and the related Java docs. You need  JDK 1.3 (or higher) and JAI 1.1 to compile and run the code.

Changes made to the Java 2D code
• app.JavaPaintShop.

Fixed several bugs in this app. Now you can move and erase the Curve shape.  The Copy/Paste bug hasn't been fixed.
• app.QuantAnalyzer
          Fixed several bugs in this app and added exception handling code to some classes..

Changes made to the  JAI code:

• com.vistech.jai.util.JAIOpUtil

  Changed the following methods:
   i.  DFTImage() and inverDFTImage()

      Changed the type of 2nd argument to javax.media.jai.DFTScalingType
      Changed the type of 3nd argument to javax.media.jai.DFTDataNature

  ii.  CompositeImages()
      Changed the type of 4th argument to javax.media.jai.CompositeDestAlpha (from int)

  iii. medianFilterImage()
      Changed the type of 2nd argument to javax.media.jai.MedianFilterShape (from int)

      Related changes in the app.RunOperators class:
      a. In the inner class FilterOpPanel, changed the types of variables masks and currentMask to MedianFilterShape.
 

• com.vistech.jai.roi.ROIStats

In JAI 1.1, the Histogram operator has different parameters. The new parameters are listed in page 617. The Histogram operator is used in the computeHistData(PlanarImage image, int numbins) and  computeHistData(PlanarImage image,ROIShape roi, int numbins) methods. In these methods, changed the following:
 i. Removed  pb1.add(his);
 ii. Inserted the following after second add(1):

          pb1.add(bins);
          pb1.add(minmax[0]);
          pb1.add(minmax[1]);
• app.ImageProcessor

In JAI 1.1, the input parameter of the ColorConvert operator was changed to ColorModel (from ColorSpace). The app.ImageProcessor code has been modified to reflect the JAI 1.1 change. In the current version, the ColorConvert tab has more options, including Gray, sRGB, and Linear RGB.
• Download  more sample code, some of which are simpler versions of the examples in the book. Theses examples include printing, zoom, and creating buffered image objects from an array of pixel data.

Last modified January 2, 2002