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《Journal of Computer Aided Design & Computer Graphics》 2003-04
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Feature Line Extraction from Triangular Mesh Model

Liu Shenglan Zhou Rurong Zhang Liyan (CAD/CAM Engineering Research Center, Nanjing University of Aeronautics and Astronautics, Nanjing 210016)  
Feature lines such as boundaries and ridges should be preserved in transforming triangular meshes into rectangular B-spline patches. An edge-based algorithm that includes two steps: feature point detection and feature line generation is presented. The feature points are identified by the angle between the normals of adjacent triangles as well as by the principal curvatures. In the algorithm, weights and some other measures are applied to reduce the approximation error. Feature points are linked into B-spline curve for the subsequent construction of B-rep model.
【Fund】: 国防预研项目 ( 41318.1 .1 7 4180 1. 7. 2 . 4);; 航空科学基金( 0 0H5 2 0 6 9);; 江苏省创新人才培养基金 (BK2 0 0 14 0 8)资助
【CateGory Index】: TP391.7
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