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《Journal of Zhejiang University(Engineering Science)》 2010-01
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Detail-preserving deformation for large-scale point set surface

TAN Guang-hua 1,2 ,XU Qiu-er1,WU Shuang-qing1,ZHANG San-yuan1,ZHANG Yin1(1.State Key Laboratory of CAD&CG,College of Computer Science and Technology,Zhejiang University,Hangzhou 310027,China;2.College of Computer and Communication,Hunan University,Changsha 410082,China)  
A reduced graph representation,ObbGraph,for large-scale point set surface was proposed.Based on this representation,an efficient and detail-preserving method for point set deformation was also presented.The method firstly embeds the point set with an ObbGraph structure,which is based on the construction of OBBTree and the intersection algorithm of oriented box.The deformation of point set is then implemented by the linear combination of each node's affine transformation of the embedded ObbGraph.The affine transformation of the ObbGraph is obtained by a non-linear optimization.As the affine transformation of each graph node is constrained to be as rigid as possible,the detail of the original point set is properly preserved.Experimental results show that this method is fast and can effectively implement the deformation of the large scale point set with detail preservation.
【Fund】: 国家“973”重点基础研究发展规划资助项目(2009CB320804);; 国家自然科学基金资助项目(60703001);; 浙江省自然科学基金资助项目(Y1090597)
【CateGory Index】: TP391.41
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