A level set based segmentation approach for point-sampled surfaces  

作　　者：MIAO Yong-wei FENG Jie-qing ZHENG Guo-xian PENG Qun-sheng 

机构地区：[1]State Key Lab. of CAD ＆ CG, Zhejiang University, Hangzhou 310027, China [2]College of Science, Zhejiang University of Technology, Hangzhou 310032, China

出　　处：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2007年第4期575-585,共11页浙江大学学报（英文版）A辑（应用物理与工程）

基　　金：Project supported by the National Basic Research Program (973) of China (No. 2002CB312101);the National Natural Science Foundation of China (Nos. 60503056, 60373036, 60333010);the Education Department of Zhejiang Province, China (No. 20060797)

摘　　要：Segmenting a complex 3D surface model into some visually meaningful sub-parts is one of the fundamental problems in digital geometry processing. In this paper, a novel segmentation approach of point-sampled surfaces is proposed, which is based on the level set evolution scheme. To segment the model so as to align the patch boundaries with high curvature zones, the driven speed function for the zero level set inside narrow band is defined by the extended curvature field, which approaches zero speed as the propagating front approaches high curvature zone. The effectiveness of the proposed approach is demonstrated by our ex- perimental results. Furthermore, two applications of model segmentation are illustrated, such as piecewise parameterization and local editing for point-sampled geometry.Segmenting a complex 3D surface model into some visually meaningful sub-parts is one of the fundamental problems in digital geometry processing. In this paper, a novel segmentation approach of point-sampled surfaces is proposed, which is based on the level set evolution scheme. To segment the model so as to align the patch boundaries with high curvature zones, the driven speed function for the zero level set inside narrow band is defined by the extended curvature field, which approaches zero speed as the propagating front approaches high curvature zone. The effectiveness of the proposed approach is demonstrated by our experimental results. Furthermore, two applications of model segmentation are illustrated, such as piecewise parameterization and local editing for point-sampled geometry.

关 键 词：Point-samoled surfaces SEGMENTATION Level set method Extended curvature field 

分 类 号：TP391.7[自动化与计算机技术—计算机应用技术]