应用拓扑投影不变原理的空间图形轮廓提取方法  

Extraction method for spatial graph contour based on topological projection invariance principle

作　　者：阎春平[1] 王宾宾[1] 覃斌[1] 刘飞[1] 

机构地区：[1]重庆大学机械传动国家重点实验室,重庆400044

出　　处：《重庆大学学报（自然科学版）》2010年第6期1-5,共5页Journal of Chongqing University

基　　金：国家自然科学基金资助项目(50975299)

摘　　要：根据拓扑投影不变原理,将空间图形轮廓提取问题转化到二维投影平面中进行处理,提出了一种法向矢量动态合成法自动确定投影平面。引入空间封闭轮廓变形参数对空间封闭轮廓的有效性进行判断,并给出了相应的计算方法,在此基础上建立了空间图形轮廓提取的数学模型,基于该模型构造了空间图形轮廓提取方法。实际应用表明该方法稳定可靠,实用性好。According to the principle of topological projection invariance, the spatial graph contour extraction problem is processed in two dimensional projection plane. In order to automatically determine the projection plane, a method of normal vector dynamic composition is put forward. In addition, deformation parameter is introduced to validate the effectiveness of spatial closed contour, and the corresponding calculation method is given. The mathematical model of spatial graph contour extraction is established and the extraction method based on the model is constructed. The practical application verifies the stability and practicality effectiveness of the method.

关 键 词：空间图形 图形轮廓提取 矢量动态合成 COMPUTER aided DESIGN 拓扑 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]