面向网上人际交流的便捷人脸动画  

Facile Face Animation toward Computer-Mediated Communication

作　　者：戴鹏[1] 徐光祐[2] 

机构地区：[1]清华大学计算机科学与技术系,北京100084 [2]清华信息科学与技术国家实验室,北京100084

出　　处：《计算机辅助设计与图形学学报》2008年第6期793-800,共8页Journal of Computer-Aided Design & Computer Graphics

基　　金：国家自然科学基金(60273005)

摘　　要：面向网上人际交流的实际需求,提出一种基于图像的便捷人脸动画方法.基于同一人脸的正面和半侧面图像,引入三维通用人脸模型估计其初始朝向,分别建立两图像的二维网格模型;然后采用图像插值和变形技术合成不同朝向人脸,并合理地解决遮挡问题.面部的唇动和表情则可将MPEG4三维模型的形变参数投影到相应的二维网格上.该方法无需重构对象人脸的三维模型和对摄像机进行标定,可同时合成面部表情与小范围朝向变化.实验结果证明了文中方法的便捷性、跨平台通用性,合成效果良好.To meet requirements of computer-mediated communication, an image based facile face animation approach is presented. Based on the two face images of the same person at front and half- profile view and an MPEG4 3D generic face model, we estimate the poses of the face at these two images and establish their 2D mesh models. Multiple views of the same face can be synthesized by image interpolation and warping, meanwhile occlusion problems are solved reasonably. Lip motion and facial expression are synthesized by projecting the FAP parameters of the MPEG4 3D model onto the current view. Our approach does not need to establish the 3D model of the individual face nor perform camera calibration. Experimental results demonstrate its efficiency, universality across platforms and acceptable image quality.

关 键 词：便捷人脸动画 基于图像绘制 姿态可变 MPEG4 以计算机为媒介的人际交流 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]