基于部件可视锥的复杂目标遮挡剔除方法

基金项目: 国家自然科学基金资助项目(40701144,40871212)；国家863计划资助项目(2008AA121600)；武汉大学测绘遥感信息工程国家重点实验室开放研究基金资助项目(09I02)

详细信息

Occlusion Culling Method for Complex Objects Based on Component Visible Cone

¹State Key Laboratory of Information Engineering in Surveying,Mapping and Remote Sensing,Wuhan University,129 Luoyu Road,Wuhan 430079,China

Funds: 国家自然科学基金资助项目(40701144,40871212)；国家863计划资助项目(2008AA121600)；武汉大学测绘遥感信息工程国家重点实验室开放研究基金资助项目(09I02)

摘要: 针对结构错综复杂的目标实时绘制中的遮挡剔除问题,提出了部件可视锥概念,用一个圆锥区域描述部件在考虑其邻近范围其他部件联合遮挡情况下的可视区域,并提出了基于部件可视锥的遮挡剔除算法,实现了实时绘制过程中可见性的快速判断,并以一个典型的虚拟建筑环境为例测试了本文方法的有效性。实验证明,利用可视锥能简化绘制过程中的可见性识别,大大提高实时绘制效率。
- 部件可视锥 /
- 遮挡剔除 /
- 复杂目标 /
- 实时绘制
Abstract: Aiming at the critical occlusion culling issues of complicated objects for real-time rendering,the concept of component visible cone is defined to describe the visible region when the occlusion fusion effected by other components are considered,which can be used for fast visibility test.In this paper the occlusion culling algorithm based on the component visible cone is proposed,and a typical virtual architecture environment is employed as a case for experimental analysis,the results prove that the visibility test during the rendering is simplified dramatically by means of the precomputed visible cone,the efficiency of real-time rendering is therefore improved remarkably.
- component visible cone /
- occlusion culling /
- complex objects /
- real-time rendering