Hi, I know this is a hard one... OpenCV stands for Computer Vision. It is an open source framework (check it out on sourceforge: http://sourceforge.net/projects/opencvlibrary or here: http://www.cs.cmu.edu/~cil/vision.html ) that allows for all the kewl stuff you might like: - Face detection (using Haar cascade algorythm) - Color Tracking - Feature tracking - Motion detection and so on....
Currently, this framework has been adapted for other graphical programming interfaces, such as: - Max Msp Jitter with CV.jitter lib (here : http://www.iamas.ac.jp/~jovan02/cv/ ) - VVVV with specific nodes (mostly freeframes).
I could use these two apps to get the features, but: VVVV runs on windows (and even with boot camp, is NOT as fast as QC in terms of video) Jitter is damn slow, even with the new UB.
Right now, apart from ReacTV (TUIO) and its fiducial trackers ( http://mtg.upf.edu/reactable/?software), no lib exist fro QC to allow for some image interpretation, so i think porting openCV to QC would be really interesting for a lot of ppl.