基于特征保持的曲面网格简化  

Mesh simplification method based on preserving shape features

作　　者：偶春生[1] 张佑生[1] 

机构地区：[1]合肥工业大学计算机与信息学院,合肥230009

出　　处：《计算机应用研究》2013年第10期3162-3164,3168,共4页Application Research of Computers

基　　金：合肥工业大学博士专项基金资助项目(GDBJ2009-020);安徽省科技攻关计划资助项目(1201b04030005)

摘　　要：为了在简化网格的同时保持曲面网格的特征细节,提出了一种特征保持的曲面网格简化新方法。首先论证并采用了刻画曲面特征的顶点法向量作为统一度量标准,推导出了基于顶点法向量变化的折叠代价,以边折叠法对曲面网格进行简化。实验表明,该方法既能较好地保持曲面的特征细节,又能同步对网格的高曲率区和低曲率区进行简化,具有良好的简化特性;统一的度量标准也为网格简化过程的实际控制提供了很大的方便。In order to preserve the shape features of surface, this paper proposed and carried out a new mesh simplification method, h used vertex normal vector metric as a simplification criteria, and deduced a new kind of edge collapse cost to control the mesh simplification. Experiment results demonstrate that the method can preserve the shape features, and can simplify the mesh efficiently both in high and low curvature regions. The uniform criteria also makes mesh simplification more convenient.

关 键 词：曲面重建 网格简化 边折叠 法向量 

分 类 号：TP391.72[自动化与计算机技术—计算机应用技术]