虚拟浏览中地形简化算法的研究

Research on Terrain Simplification in Virtual Browse

对虚拟环境中自然场景的生成来说 ,三维地形的生成是其中的一个重要成分 ,也是虚拟现实领域中视景系统的一个重要组成部分 .文中介绍了虚拟浏览中地形简化的必要性 ,并总结了前人研究中已有的算法 .进而引出了动态多细节水平地形渲染的实时算法 ,并给出其实现过程及实验结果 .最后 。

Three dimensional terrain generation is one of important factors of the natural scenes in virtual environment. It is also a significant composition of view system in virtual reality field. This paper introduces the necessity of terrain simplification in virtual browse, and concludes the existing algorithm. Then educes the real time algorithm of dynamic level of detail terrain rendering and gives out its realizing process in detail. At last, this paper also gives out a method of removing cracks on the meshes boundary.