标题：Feature sensitive deformation for triangular mesh models
作者：Jun He , Caiming Zhang ?,YuWei and Weitao Li
作者机构：[He, J] School of Computer Science and Technology, Shandong Economic University, Jinan 250014, China;[ Zhang, C] School of Computer Science and Techno 更多
通讯作者地址：[Zhang, CM]Shandong Univ, Sch Comp Sci & Technol, Qilu Software Coll, Middle Shunhua Rd, Jinan 250061, Shandong, Peoples R China.
来源：Computer animation and virtual worlds
关键词：Laplacian deformation;dual mesh;feature sensitive
摘要：Shape deformation is a useful tool for shape modeling and animation in computer graphics. In this paper, we propose a novel surface deformation method based on a feature sensitive (FS) metric. Firstly, taking unit normal vectors into account, we derive a FS Laplacian operator, which is more sensitive to featured regions of mesh models than existing operators. Secondly,we use the 1-ring tetrahedron in the dualmesh, a volumetric structure, to encode geometric details. To preserve the shape of the tetrahedron, we introduce linear tetrahedron constraints minimizing both the distortion of the base triangle and the change of the corresponding height. These ensure that geometric details are accurately preserved during deformation. The time complexity of our new method is similar to that of existing linear Laplacian methods. Examples are included to show that our FS deformation method better preserves mesh details, especially features, than existing Laplacian methods. Copyright ? 2010 John Wiley & Sons, Ltd.