Libpuzzle

Library to find similar pictures

The Puzzle library is designed to quickly find visually similar images GIF, PNG, JPG, even if they have been resized, recompressed, recolored or slightly modified. The library is free, lightweight yet very fast, configurable, easy to use and it has been designed with security in mind.

WWW http//libpuzzle.pureftpd.org/project/libpuzzle