面向曲面品质分析的极限反射法  

Infinite Reflection Algorithm for Surface Quality Analysis

作　　者：纪小刚[1] 龚光容[1] 

机构地区：[1]南京理工大学机械工程学院,江苏南京210094

出　　处：《南京理工大学学报》2006年第2期173-177,共5页Journal of Nanjing University of Science and Technology

基　　金：国防科技预研项目

摘　　要：结合反射线法和高亮线法各自的优缺点,通过对反射线法和高亮线法的简化及改进,提出了面向曲面品质分析的极限反射法。该方法将视点和光源向无穷远处映射,使得视点和光源能够用单位方向矢量v和a唯一确定,从而消除了视点及光源的选取对反射线生成的影响,同时继承了高亮线法计算效率高的特点,能够在现有硬件条件下实现曲面品质分析的交互操作。平面直线光源对应于极限反射线法,平面圆形光源对应于极限反射圆法。最后给出了极限反射法的具体例子。实例表明:极限反射法是一种理想的曲面品质检查方法。Integrating the respective virtues of reflection line algorithm and highlight line algorithm, a simplified and improved infinite reflection algorithm for surface quality analysis is presented. In this method, the viewpoint and the light source are mapped to infinity, and then expressed by unit vector v and a uniquely. The effect on the generation of reflection lines owing to the selection of viewpoint and light sources is eliminated. At the same time, the efficiency of highlight line algorithm is inherited and the alternate operation is fulfilled with the current hardware. The infinite reflection lines are determined by coplanar parallel linear light sources and infinite reflection circles are determined by coplanar concentric circles sources, Several examples based on the infinite reflection algorithm are provided and the infinite reflection algorithm is proved to be an ideal algorithm for surface quality analysis.

关 键 词：曲面品质分析 反射线法 高亮线法 极限反射法 计算机图形学 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]