OpenCV : open-source computer vision

OpenCV is an open source library from Intel for computer vision. To quote the page,

"This library is mainly aimed at real time computer vision. Some example areas would be Human-Computer Interaction (HCI); Object Identification, Segmentation and Recognition; Face Recognition; Gesture Recognition; Motion Tracking, Ego Motion, Motion Understanding; Structure From Motion (SFM); and Mobile Robotics."

Sounds like some of this could be pretty useful for interactive video neuro-art, or whatever the hell it is we're doing.