See Also: http://sagactor.blogspot.com/2010/04/performance-capture.html
PERFORMANCE CAPTURE – The use of an actor to create the actions or to act our movements and scenes which are then digitized and used as the basis of a “computer generated” character or object. Also known as “Movement Capture” or “Motion Capture”. Actors are championing the term “performance capture” because it implies an actor’s creative control over character through movement and performance. Producers go for the more technical “motion capture” because it implies that the real art and creation is not in the movements caught on the computer, but in the work done by technicians on characters who never existed in the “real world.” http://www.jerrygelb.com/movies/PerfCapsm.mov
Performance Capture or Motion Capture uses a human model to provide the movements, emotions and overall performance for a computer generated image. Futher details above.