Clifford代数3D人脸姿态矫正方法  

Clifford Algebra Approach for 3D Face Pose Correction

作　　者：丁立军[1] 冯浩[1] 华亮[1] 

机构地区：[1]浙江工业大学信息工程学院,杭州310014

出　　处：《小型微型计算机系统》2013年第4期906-909,共4页Journal of Chinese Computer Systems

基　　金：国家自然科学基金项目(60871093)资助

摘　　要：非正面视图的3D人脸对特征提取及识别结果有不等程度的影响,因此在预处理阶段需要对3D姿态进行矫正,使其还原于正面视图.本文就其提出一种基于Clifford代数理论的3D人脸姿态矫正方法,即通过计算与检测3D人脸的特殊点,确定人脸正面所在平面及空间的几何位置;再构造Clifford代数的几何旋转算子对3D人脸顶点坐标向量进行旋转,使其3D人脸正面处于坐标正视图,眼睛保持水平位置以现实姿态矫正.实验结果表明该方法计算简单,几何意义直观,矫正精度高,并具有通用性.The 3D face samples within no-front plane would influence the feature extraction and recognition ot them, therefore it should be pose corrected in the preprocessing state to be within the front plane. This paper proposed a method for 3D face pose correction based on Clifford algebra, namely, fixed on the frontal plane of 3D face by computing and detecting some specific points on it; and then constructed Clifford geometrical rotator for vertexes coordinate to rotate for the purpose of 3D face pose correction. The experimental results indicated that the proposed method made the calculation easy, and had clearly geometrical meaning and high accura- cy of correction, it can be widely application.

关 键 词：3D人脸 姿态矫正 CLIFFORD代数 离散高斯曲率 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]