Beyond photography : the digital darkroom

This book shows how photographs can be scanned into a computer and manipulated in a `digital darkroom' at a resolution that is close to the resolution of commonly used films and photographic papers.
Although the results can be startling, most of the images in this book were made in only a few seconds of computer time. The transformations can be specified in a few lines of text with the picture transformation language `popi' that is introduced in the first chapters of the book. All transformations can be reproduced completely with a small portable picture editing system, that is also discussed in the book. It is written in the programming language C, and you can run it on your home computer.