text: This sieastem can recognize emotions whether you're angry, happy, surprise, disgust, fearles and ect. This process begins when the computer constrac a 3-D computer model of the face. all 44 major muscles in the model must move like human muscles. Action unit are movement of one ore more muscle. Dr. Huang relies on the work of psychologists, such as Dr. Paul Eckman wich are the creators of FACS.