FaceOSC is a new tool for prototyping face-based interaction. This video, via Kyle McDonald, demonstrates how it can be used to capture face movements and use the facial ‘gestures’ to control Propellerhead Reason.
McDonald notes that “Some of the “face gestures” (or metrics) are more stable than others. Lighting can also have a huge influence on the stability of your values: even lighting from the front coupled with a dark background can give the best results.”
FaceOSC comes as an example app with the ofxFaceTracker addon for openFrameworks.