| 非平均化自适应Catmull-Clark细分算法 |
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| 引用本文： | 郑津津,朱巍,周洪军,沈连婠. 非平均化自适应Catmull-Clark细分算法[J]. 计算机应用与软件, 2010, 27(1): 6-8,22 |
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| 作者姓名： | 郑津津 朱巍 周洪军 沈连婠 |
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| 作者单位： | 1. 中国科学技术大学精密机械与精密仪器系,安徽,合肥,230027
2. 国家同步辐射实验室,安徽,合肥,230029 |
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| 基金项目： | 国家自然科学基金(10575097,10775128);;高等学校学校创新引智计划(B07033) |
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| 摘 要： | 提出一种基于网格边的光滑度计算来进行Catmull-Clark自适应细分的新算法。该方法能够在满足显示需求的前提下较好地减小细分曲面过程中的网格生成数,同时解决了由于采用网格顶点曲率计算,来实现自适应细分方法中平均化生成顶点曲率带来的不足。通过对比试验,算法能更好地区别当前细分网格中光滑与非光滑区域,增加对非光滑区域网格加密密度,并且该算法能够普遍适用于较复杂的细分模式中,具有一定的推广价值。
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| 关 键 词： | 自适应细分 Catmull-Clark细分算法 细分 |
NON-UNIFORM ADAPTIVE Catmull-Clark SUBDIVISION ALGORITHM |
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| Zheng Jinjin,Zhu Wei,Zhou Hongjun,Shen Lianguan. NON-UNIFORM ADAPTIVE Catmull-Clark SUBDIVISION ALGORITHM[J]. Computer Applications and Software, 2010, 27(1): 6-8,22 |
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| Authors: | Zheng Jinjin Zhu Wei Zhou Hongjun Shen Lianguan |
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| Affiliation: | Department of Precision Machinery and Precision Instrumentation/a>;University of Science and Technology of China/a>;Hefei 230027/a>;Anhui/a>;China;National Synchrotron Radiation Laboratory/a>;Hefei 230029/a>;China |
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| Abstract: | A new algorithm of adaptive subdivision on Catmull-Clark surface with mesh edge-based smooth value is presented in this paper.The method can decrease the number of meshes in surface subdividing steps efficiently while satisfy the demand of display,and solve the shortcoming incurred from adopting the calculation of vertex curvature of mesh to accomplish the average generation of vertex curvature in adaptive subdivision algorithm.Through the contrasting experiment with other Catmull-clark adaptive subdivision... |
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| Keywords: | Adaptive subdivision Catmull-clark subdivision algorithm Subdivision |
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