基于变形与测地距离一致性约束的3D面皮点对应  

3D facial correspondence based on deformation and geodesic distance consistency constraint

作　　者：贺洁琼[1] 耿国华[1] 杜洪强[1] 郭鹏[2] 贺毅岳[1,3] 李康[1] 

机构地区：[1]西北大学信息科学与技术学院,西安710127 [2]中航工业西安计算技术研究所,西安710068 [3]西北大学经济管理学院,西安710127

出　　处：《计算机应用研究》2012年第12期4750-4753,共4页Application Research of Computers

基　　金：国家自然科学基金资助项目(F010402);国家重点基础研究发展计划前期专项项目(2011CB311801);西北大学研究生自主创新基金资助项目(10YZZ15);陕西省自然科学基础研究计划资助项目(2011JQ8029)

摘　　要：针对三维面皮生理点对应关系建立这一难题,充分考虑测地距离在描述复杂几何体表面形状方面的优势,提出了基于变形与测地距离一致性约束的3D面皮生理点对应方法。首先在Frankfurt坐标变换后标定面皮特征点集,利用特征点对应关系进行TPS变形;然后根据特征点几何特征向量建立初始点对应关系集,并利用测地距离一致性约束对其进行修剪以生成对应关系核心集;最后扩展对应关系核心集,直至确定源模型上每一顶点的对应关系。实验表明,该方法提高了点对应关系准确度,可有效建立三维面皮生理点对应关系。Aiming at the 3D physiology point correspondence between faces samples,considering the advantages of geodesic distance in describing complex surface shape,this paper proposed a new 3D facial physiology correspondence method based on model deformation and geodesic distance consistency constraint.Firstly,it marked feature points based on the Frankfurt coordinate and the face model deformed based on thin plate spline function according to the correspondence of feature points.Secondly,it established the initial correspondence set according to the geometric feature vector of feature points,then pruned the initial correspondence set depending on geodesic distance consistency constraint in order to generate a kernel set.Finally,it extended the kernel set until each vetex on source model has corresponded.Experimental results prove that this method improves the precision of point correspondence,and it can establish 3D face physiology point correspondence effectively.

关 键 词：三维面皮 点对应 TPS变形 特征点 测地距离约束 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]