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Loop型半静态细分方法 被引量:3

Semi-stationary Loop Subdivision Scheme
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摘要 在拓展四次三方向Box-样条曲面离散定义的基础上,导出了半静态Loop细分方法,并构造了该细分方法的二邻域细分矩阵.通过对细分矩阵特征值的理论分析,证明了文中方法的细分极限曲面收敛且切平面连续.半静态Loop细分方法的细分矩阵随细分次数规则变化,与传统Loop细分方法相比,该方法具有更大的灵活性和更丰富的造型表现能力. We present a semi-stationary loop subdivision scheme based on the extension of box-spline. We deduce the eigenvalues of 2-neighbors subdivision matrix of the scheme, and prove that the subdivision surface is convergent, and has property of tangent plane continuity. Compared with the conventional loop subdivision method, as the subdivision matrix can update regularly with the iteration procedure, ours has stronger capability of modeling.
出处 《计算机辅助设计与图形学学报》 EI CSCD 北大核心 2006年第7期929-935,共7页 Journal of Computer-Aided Design & Computer Graphics
基金 国家重点基础研究发展规划项目(2002CB312101) 国家创新研究群体科学基金(60021201) 国家自然科学基金重点项目(60133020) 教育部博士点基金(20030335083)
关键词 曲面造型 细分曲面 LOOP细分 半静态细分 surface modeling subdivision surface loop subdivision semi-stationary subdivision
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