When I make presentations on digital imaging, I'm often asked to recommend reference books. Two books are presently at the top of my recommendation list:
DIGITAL IMAGING FOR VISUAL ARTISTS
Sally Wiener Grotta and Daniel Grota
As the name implies, this book is designed for individuals who want to use digital imaging technology as a tool and has excellent "working level' coverage of digital imaging topics.
DIGITAL IMAGE PROCESSING: Principles and Application
Gregory A. Baxes
John Wiley & Sons, Inc
Available from Image Ware Systems Group, PO Box 621291, Littleton, CO 80162
Voice 303-979-5255, Fax 303-979-0585
This is the book I call "digital image processing for mere mortals". It takes a non-mathematically rigorous approach to digital imaging technology. If you don't know a Fourier transform from bus ticket but still want a better understanding of digital imaging, this is your book.
Check out the Agfa website at http://www.agfahome.com/publications/pubs-overview.html
for information on how to order these publications:
You've probably used Photoshop's Unsharp Mask filter, but do you really understand what happens to an image when you vary the Amount, Radius and Threshold levels? The book shows what happens using pictures and diagrams. The authors have done a great job of presenting such information in an easy to understand manner. I recommend the book to anyone interested in learning more about the "workings" of digital imaging.