逆向工程中带孔洞的曲面对象三角剖分法研究  

Research on Triangulation Method of Object Surface with Holes in RE

作　　者：陈慧群[1] 陈少克[1] 

机构地区：[1]汕头大学智能制造技术教育部重点实验室,广东汕头515063

出　　处：《组合机床与自动化加工技术》2006年第11期45-47,共3页Modular Machine Tool & Automatic Manufacturing Technique

摘　　要：在分析现有的一些三角剖分方法的基础上,提出一种新的基于边界扩展的3D三角剖分方法,该方法首先采用一种空间栅格装点法来进行初始点云数据精简;再构造种子三角形,通过连接已剖分网格区域的边界边与最优扩展点来形成三角形网格从而向外扩展。该法可以对带有内孔等其他非凸壳的复杂曲面对象点云直接进行三角剖分,无需人工分区。实际应用表明采用该法可以快速、有效地从三维数据点集建立几何模型。Based on the analysis of current triangulation method, a new 3D triangulation method based on boundary extension is proposed. Binning method is first applied to reduce the original point cloud into thin data, then the triangulation processes start with selected seed triangles, the triangular meshes extend outward by continuously linking the most suitable points to them along the boundary edges of the meshed area. Data points of some non-convex complex object surface such as object with interior holes can be directly triangulated without manually dividing it into several convex patches, The application results indicate that this approach is feasible and efficient in modeling of 3D point cloud.

关 键 词：逆向工程 孔洞 边界扩展 三角剖分 

分 类 号：TH165[机械工程—机械制造及自动化]