An armature structure for 3D shapes  

作　　者：JI Zhong-ping LIU Li-gang KIM Deok-soo 

机构地区：[1]School of Computer Science and Technology, Hangzhou Dianzi University [2]Graphics Geometric Computing Laboratory, School of Mathematical Sciences, University of Science and Technology of China [3]Department of Industrial Engineering, Hanyang University

出　　处：《Applied Mathematics(A Journal of Chinese Universities)》2014年第4期422-437,共16页高校应用数学学报（英文版）（B辑）

基　　金：Supported by the National Natural Science Foundation of China(61202278 and 61222206);the Zhejiang Natural Science Foundation of China(Y1111101)

摘　　要：We present a novel armature structure for 3D articulated shapes, called SBall short for skeletal balls, which includes two parts： a one-dimensional skeleton and incident balls. Our algorithm mainly focuses on constructing the armature structure. This structure is based on an approximation skeleton which is homotopy equivalent to the shape. Each ball in the structure connects a skeletal joint and an interior region of the shape. The boundary vertices on the shape surface are attached onto the SBall using the power diagram of the ball set. A bilateral O^tering algorithm and a variational segmentation algorithm are proposed to enhance the quality of SBall. Finally, applications of this structure are discussed.We present a novel armature structure for 3D articulated shapes, called SBall short for skeletal balls, which includes two parts： a one-dimensional skeleton and incident balls. Our algorithm mainly focuses on constructing the armature structure. This structure is based on an approximation skeleton which is homotopy equivalent to the shape. Each ball in the structure connects a skeletal joint and an interior region of the shape. The boundary vertices on the shape surface are attached onto the SBall using the power diagram of the ball set. A bilateral O^tering algorithm and a variational segmentation algorithm are proposed to enhance the quality of SBall. Finally, applications of this structure are discussed.

关 键 词：armature structure prong feature THINNING variational segmentation. 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] TQ424.25[自动化与计算机技术—计算机科学与技术]