一种用于人脸动画的拟合抽象肌肉模型

Fitting Abstract Muscle Model for Human Face Animation

三维人脸动画是计算机图形学领域的热点课题。针对目前三维动画模型对人脸的模拟难度高且效果不够逼真地问题,为了简洁且逼真的模拟人脸表情动作,提出了一种拟合抽象肌肉模型。该模型基于人脸动画模型中常用的抽象肌肉模型,对其中宽线性肌的数学模型进行改进,利用形变参数控制宽线性肌的形态,对面部肌肉动作直接进行模拟。仿真实验表明,利用拟合抽象肌肉模型能够更为真实地模拟出复杂的嘴部动作。因此,拟合抽象肌肉模型与传统的抽象肌肉模型相比,实现的计算复杂度不高,并且模拟效果更加逼真,具有广阔的应用前景。

Three-dimensional face animation is a hot subject in the field of computer graphics. A fitting abstract muscle model is proposed to simulate complex face expressions succinctly because it is difficult and is not quite realistic for the three- dimensional animation model to simulate face expressions at present. The mathematical model of wide linear muscles in the common abstract muscle model of face animation model is improved： the shape of wide linear muscles is under control of de- formation parameters to directly simulate face muscle details. The simulation results show that the improved model can more truly simulate real labial motions. In comparison with the traditional abstract muscle model, the fitting abstract muscle model has less computational complexity and more realistic simulation result, which reveals a broader prospect in applications.