逆向工程中离散曲率估算及其可视化的实现  

Discrete curvature estimation and visualization in reverse engineering

作　　者：刘鹏鑫[1] 王扬[1] 刘璇[2] 

机构地区：[1]哈尔滨工业大学,哈尔滨150001 [2]上海海洋大学,上海200030

出　　处：《现代制造工程》2011年第2期15-18,共4页Modern Manufacturing Engineering

基　　金：国家自然科学基金项目(50675053)

摘　　要：采用Meyer离散曲率估算方法估算了三角网格模型的顶点曲率;在此基础上,通过图像处理中的直方图均衡化算法对曲率值进行处理,并用颜色索引表建立了曲率和颜色间的映射关系,以曲率的可视化来清晰地反映网格模型的曲率变化,进而验证曲率估算的准确性,突出凹凸特征显示;为逆向工程中的数据分割、特征识别以及模型优化等提供技术保证。The discrete curvature of triangular mesh is estimated by Meyer＇s method,and then curvature is processed by histogram equalization algorithm which is usually used in image processing.In order to realize the visualization for curvature of triangular mesh,which can reflect the change for curvature clearly and verify the accuracy of estimation and show concave convex features outstanding,establish the mapping relationship between curvature and color index.This method also provide the technology support for reverse engineering including data segmentation,feature recognition,and mesh model optimization.

关 键 词：逆向工程 离散曲率估算 可视化 直方图均衡 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]