【摘要】 三维人脸动画技术可以应用于虚拟现实、虚拟主持人、虚拟会议、辅助教学、医疗研究、电影制作、游戏娱乐等很多领域。本文介绍了基于MPEG-4标准的人脸动画的工作原理,改进了MPEG-4中已知FAP(人脸动画参数)值和FaceDefTables(人脸动画定义表),计算FAP控制区内点的坐标的算法。最后提出了一种构造人脸动画定义表的方法。该方法的操作结合了自动计算和手工调整,最后实现了以FAP作为参数驱动的三维人脸动画。更多还原

【Abstract】 The technique of three-dimensional human facial animation can be applied in a wide of fields such as virtual reality, virtual presenter, virtual meeting, education, medical treatment researches, movie effects, games and so on. First, the theory of facial animation in MPEG-4 is introduced in this paper. Then the algorithm defined in MPEG-4 to calculate the displacements of vertices with a FAP (Facial animation parameter) value and the FaceDefTables is discussed and improved. At last, a method of constructing FaceDefTables in FDP is presented. The vertices?displacements affected by FAP can be calculated by this method. Using this technique, realistic facial animation can be generated.更多还原