摘要
通过在不规则采样点集上构建一个四叉树结构,并联合基于四叉树的LOD算法和基于TIN的三角网简化算法,提出并实现了一种TIN的LOD算法。意在把适用于格网数据的高效方法应用于不规则采样点集,得到地形的一个高效的多分辨率表达。
Through building a quadtree structure on irregular point data, and combining the quadtree based Level-of- Detail (LOD) methods and the Triangulated Irregular Network (TIN) based triangle mesh simplification methods, we proposed and realized a LOD algorithm for TIN. The goal of the paper was to apply the method suitable for grid terrain data to the irregular point data, and to realize an efficient multi-resolution expression of the terrain.
出处
《计算机应用》
CSCD
北大核心
2007年第2期499-502,共4页
journal of Computer Applications
关键词
地形可视化
不规则三角网
细节层次
算法
Terrain visualization
Triangulated Irregular Network (TIN)
Level-of-Detail (LOD)
algorithm