基于三角网格模型的法矢及曲率估算  

Estimation of normal and curvature based on the triangle mesh model

作　　者：杨楠[1] 校江超[2] 王明海[1] 

机构地区：[1]西安建筑科技大学理学院,西安710055 [2]西安工业大学机电工程学院,西安710032

出　　处：《现代制造工程》2010年第3期104-107,共4页Modern Manufacturing Engineering

摘　　要：测量数据的微分几何属性估算是逆向工程中区域分割以及曲面拟合的基础,对逆向工程研究具有重要意义。首先根据三角网格模型中的顶点及其邻接点逼近二次曲面,并计算其第一、第二基本量,然后据此估算网格顶点的法失和曲率,最后利用OpenGL技术实现三角网格模型法矢和曲率的显示。Estimating the differential property of measured data is essential to region segmentation and surface fitting of reverse engineering. Firstly, quadric surface is approximated with the vertex and its neighboring vertexes of the triangle mesh model, and the first and the second basic quantity are calculated, then estimating the normal and curvature of the mesh vertexes, lastly OpenGL technique is used in realizing the graphics display of the triangle mesh model.

关 键 词：三角网格 法矢 曲率 

分 类 号：TP391.7[自动化与计算机技术—计算机应用技术]