text: In fact, the computer takes the model of the picture or what ever is there,but it must have human muscles in the picture ir 3-D model the human muscles is called "acton unit". It only takes in the model if it see's it have forty-four major muscles like a human would have. Dr. Huang and Dr. Paul Eckman has classified for the software to have six emotions-happiness,surprise,anger,disgust,fear, and sadness.