计算机技术与发展2011，Vol.21Issue(4)：5-8,12,5.
基于四叉树分割的连续LOD漫游地形绘制
Continuous LOD Roaming Terrain Rendering Based on Quad-Tree Division
摘要
Abstract
In order to solve the problem of data access of the large scale terrain, high memory space cost of large scenery rendering and low efficiency of real-time rendering, a continuous LOD ( level of detail) terrain rendering schema based on quad-tree division was proposed and fast multi-resolution terrain rendering was realized. Judging fewer and combining with the procedure of quad-tree generation,the view-cutting was precise and fast. The division evaluation system was associated with the point of view and terrain roughness, the errors were calculated on the stage of preparation, thus the speed of the real-time rendering could be increased appreciably; The division flags were stored by bit at the same time, so the memory share could be significantly reduced. The cracks between nodes were eliminated by low-resolution edge node division. As a result, the program achieves a good roaming effect and a high FPS on the ordinary PC platforms.关键词
连续LOD地形绘制/四叉树分割/数据裁剪/分割标志位/裂缝消除分类
信息技术与安全科学引用本文复制引用
吴颖,张新家,茹芬..基于四叉树分割的连续LOD漫游地形绘制[J].计算机技术与发展,2011,21(4):5-8,12,5.基金项目
国家自然科学基金(60803158) （60803158）
