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.
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