The main coverage is of bi-level images and grey level images, though there is a brief section on the problems of and methods for colour. Colour imaging requires a great deal more memory and processor power. Most of the common and necessary image operations are covered. The mathematical and statistical functions are fairly simple. The author occasionally discusses methods of implementation, i.e. various ways of handling loops and arrays for speed.
Images tend to do a lot of array manipulation with loops.
The text is clear and reasonably easy to follow. Confusingly there is a source code index immediately after the normal index. One can easily look up a reference in the wrong index. One of the more useful ideas is that the bibliography is by topic. The remaining part of the book is OK but nothing special and so not recommended.