| 基于型面曲率的三角网格快速自适应细分算法 |
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| 引用本文： | 孙殿柱,朱昌志,李延瑞.基于型面曲率的三角网格快速自适应细分算法[J].北方交通大学学报,2009(4):38-41. |
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| 作者姓名： | 孙殿柱 朱昌志 李延瑞 |
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| 作者单位： | 山东理工大学机械工程学院,淄博255091 |
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| 基金项目： | 国家“863计划”项目资助（2006AA04Z105） |
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| 摘 要： | 提出一种基于型面曲率的三角网格快速自适应细分算法．该算法通过建立三角网格动态空间索引结构，快速准确获取局部型面参考数据并计算型面曲率．对曲率较大区域进行细分，对较平坦区域只进行网格顶点重定位，不进行面片分裂，实现三角网格的自适应细分．实例证明该算法可提高模型的光顺性与细分效率，以相对较少的面片准确表达模型型面特征信息．
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| 关 键 词： | 逆向工程 三角网格 空间索引结构 型面曲率 自适应细分 |
Accelerating and Self-Adaptive Algorithm for Triangular Meshes Subdivision Based on Model Curvature |
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| SUN Dianzhu,ZHU Changzhi,LI Yanrui.Accelerating and Self-Adaptive Algorithm for Triangular Meshes Subdivision Based on Model Curvature[J].Journal of Northern Jiaotong University,2009(4):38-41. |
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| Authors: | SUN Dianzhu ZHU Changzhi LI Yanrui |
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| Institution: | (School of Mechanical Engineering, Shandong University of Technology,Zibuo 255091, China) |
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| Abstract: | Based on model curvature, an accelerating and self-adaptive algorithm for triangular meshes subdivision is proposed, which includes three steps： first, the spatial index structure of triangular meshes is established; then, the local model reference data is obtained based on the structure, and its curvature is computed; lastly, the area with larger curvature is subdivided and the flat area isn＇t subdivided, and the adaptive subdivision of triangular meshes is realized. The results prove that the algorithm can improve smoothness of model and efficiency of subdivision, and demonstrate model＇s information exactly with relatively less patches. |
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| Keywords: | reverse engineering triangular meshes spatial index structure model curvature self-adaptive subdivision |
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