Mouth and tongue model controlled by muscles based on motion trail analyzing

The animation of lip-synching in visual voice technology or talking head system is a very important part.This paper presented a new method about controlling the movement of the mouth and tongue's 3-D(three-dimensional) model.Firstly,it built a tongue model according to the anatomy,and a mouth model based on meshes and texture model.Then,through analyzing the lip's motion,it used the method of dividing the orbicularis oris into two parts to imitate the lip's motion trail.In the part of tongue's motion simulation,according to its trail,divided it into some kinds of mechanical motions' combination and used four kinds of muscles to control these motions.Finally,it realized mouth's shape when people talking,and tongue's movements like rotating up,moving side-to-side and so on.The experiments show that the method can vividly simulate the mouth and the tongue's motion.