Cv.jit

Pelletier's toolkit, which is the most feature-rich of the three vision plug-ins(David Rokeby's SoftVNS, Eric Singer's Cyclops, and Jean-Marc Pelletier's CV.Jit) is also the only which is freeware.

Cv.jit is a collection of max/msp/jitter tools for computer vision applications. The goals of this project are to provide externals and abstractions to assist users in tasks such as image segmentation, shape and gesture recognition, motion tracking, etc. as well as to provide educational tools that outline the basics of computer vision techniques.

http://www.iamas.ac.jp/~jovan02/cv/