1. The HistogramTool application doesn't work properly, due to a bug in the drawTickLabel method of the HistogramView class. Revised versions of the class source file and application JAR file are available.

2. Page 194, Equation 8.4: cos ... + j sin ... should be cos ... - j sin ...

3. Page 195, Equation 8.6: indices on summation should be u and v, not x and y.