从一般人脸模型到特定人脸模型的修改

Modification from General Face Model to Specific Face Model

计算机模拟领域取得了巨大的成就，但是三维人脸的模拟工作对许多研究者来说仍是一个具有挑战性的课题。如何在人脸复杂的、不规则的表面上建模以及如何反映出特定人脸间的个体差异是实现真实人脸模拟的两大主要困难所在。本文针对后者，在已知一般人脸中性模型与一般人基本表情模型基础上，根据特定人脸的不同特征，经过整体与局部两种变换，完成从一般人脸中性模型到特定人脸中性模型的修改。随后，本文设计了矢量空间位移变换法，并应用该方法生成特定人基本表情模型。

Much progress has been made in the field of computer animation,but the task of animating the human face has always remained a major challenge.The two chief difficulties of implementing realistic human face animation are how to build up a model over the complex and irregular surface of human face and how to reflect the differences between specific human faces.This paper focuses on the latter problem,according to the facial features of a specific person,global and local transformations are applied to accomplish the modification from neutral general face model to neutral specific face model.After this,vector space displacement transformation is designed to generate the basic expression of specific face model,all these are based on the hypothesis that both the neutral and the basic expressions of general face model have already been known.A valuable method is explored in this paper to solve the problem of realistic human face animation.