摘要
介绍一种用于支持如光线跟踪和辐射度求解等全局光照的高效分层遮挡测试算法．它基于简单的圆锥体相交检测，可以尽早排除场景中的非相关部分和迅速找出那些落在给定物体的阴影区的多边形顶点．它已显示出是一种传统的阴影探测方法（ＳｈａｄｏｗＦｅｅｌｅｒ）的有效替换算法．
This paper presents an efficient hierarchical occlusion test algorithm to support the global illumination solution such as Ray Tracing and Radiosity. This method, which is based on a cone volume intersection examination, can rapidly remove the irrelevant parts in a scene and find the vertices which fall into the shadow area of a given object. It is an effective alternative to the conventional shadow feeler method.
关键词
全局光照
辐射度方法
遮挡测试
global illumination, radiosity, occlusion test Information Engineering,
