Abstract: Based on a uniform model for facial action,the characteristic and restriction of facial muscles were analyzed.The unit of facial action was propsed to generate facial action by using kinematical method and teaching method. The complex facial actions can be synthesized by the basic units of facial action. Experiments show that the kinematical method reduces the probability of the unnatural expression by controling muscles accurately, and the teaching method generates the facial action without considering the details, and the synthesized facial actions arc generated effectively by reusing the units of facial action.

Key words: Facial action, Agent, Kinematics, Synthesized facial action