基于运动分解的嘴部肌肉建模仿真

摘要

Most researchers model virtual mouth muscle using traditional Water muscle classification method. However, for the lack of research on the correlation between motions, the control of these models is more independent. A muscle-control model of mouth based on motions decomposition was presented in this paper. According to the anatomy and motion characteristic, the mouth motions were decomposed into three basic motion units of protruding, raising and curling, opening and closing. Then the manner of existing sphincters is shrinking or diffusion to the center, thus it is difficult to show the protruding, raising and curling, and other mouth motions. Therefore, an arc muscle model with three motion parameters was proposed. Combined with other muscles around the mouth, this model can mix out different mouth motions. The experiments show that the method can simulate mouth movement factually and the model can be controlled conveniently.%现有虚拟嘴部肌肉建模多采用传统的Water肌肉分类方法,运动控制较为独立,缺乏对运动间相关性的研究.提出了一种基于运动分解的嘴部肌肉建模及控制方法.首先根据解剖结构及肌肉运动特征,将嘴部自身运动分解为凸唇、翘唇和开合三个基本运动单元;其次现有模型中括约肌运动方式是向中心收缩或扩散,难以表现凸翘等嘴部运动,为此提出了弧状肌模型,并通过控制三个运动参数,结合其它嘴周围肌组合出不同的嘴部运动.实验表明,新方法能够较真实地仿真出嘴部的多种自然运动,控制较为便捷.