逆向工程中一种鲁棒的对称面提取方法  

Robust algorithm for symmetry plane extraction in reverse engineering

作　　者：贺强[1] 张树生[1] 白晓亮[1] 

机构地区：[1]西北工业大学现代设计与集成制造技术教育部重点实验室,陕西西安710072

出　　处：《计算机集成制造系统》2012年第6期1121-1126,共6页Computer Integrated Manufacturing Systems

基　　金：国家自然科学基金资助项目(60573177)~~

摘　　要：为解决基于特征的逆向工程中反射对称提取的问题,提出一种鲁棒的对称面提取方法。首先利用特征线将模型分割成体素的集合,然后计算各个体素的形状分布曲线,通过形状分布曲线匹配的方式获几何形状相似的体素,并利用最小包围盒从中提取大小相似的体素以构成对称体素的集合。最后利用鲁棒的主元分析方法提取了反射对称体素的对称面信息。实验结果表明对称提取结果的误差较小并具有较强的鲁棒性。To solve the problem of symmetry plane extraction in feature based reverse engineering, a robust algorithm was presented. The model was segmented into voxels set based on its feature lines. For each voxel, shape distribu- tion histogram was calculated, and voxels with geometry similarity were obtained through shape distribution func- tion. The set of symmetric voxels was constructed by ones which had similar minimum bounding box. The symme- try plane was computed by robust principle component analysis. The experimental results showed that the extracted symmetry information was accurate and had robust.

关 键 词：对称面 分割 形状分布 逆向工程 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]