大规模多分辨率地形模型简化生成方法  

Simplifying the Generation of Large-Scale and Multi-resolution Terrain Model

作　　者：陈少强[1] 朱铁稳[1] 李琦[1] 苗前军[2] 

机构地区：[1]北京大学遥感与地理信息系统研究所 [2]黑龙江省测绘局,哈尔滨150086

出　　处：《计算机辅助设计与图形学学报》2005年第2期273-278,共6页Journal of Computer-Aided Design & Computer Graphics

基　　金：国家"八六三"高技术研究发展计划 (2 0 0 2AA13 40 3 0 )

摘　　要：针对地形的四叉树简化技术 ,提出一个简单的裂缝消除算法 该算法不使用递归同样可以使四叉树满足约束条件 ,简化结果不存在T型连接 利用该算法实现了地形数据的实时显示 。The technique of large-terrain rendering is still in progress. This paper proposes a simple algorithm of crack elimination used in the quad-tree simplification procedure of terrain. The method does not use recursion, when it converts a quad-tree to a restricted quad-tree. The resultant mesh generated is continuous without T-junction. In taking advantage of this algorithm, real-time rendering of large-terrain is achieved. Finally, further improvement is also proposed.

关 键 词：大规模地形显示 四叉树 裂缝消除 T型连接 递归 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]