基于ROAM算法的数字地面模型研究与实现  

Research and realization of DTM based on ROAM

作　　者：张恒国[1] 王合龙 吴清香[3] 

机构地区：[1]中国人民解放军95861部队 [2]莱芜市科技开发中心 [3]中国人民解放军95948部队

出　　处：《信息技术》2008年第1期95-97,100,共4页Information Technology

摘　　要：针对规则网格的数据量过大问题,采用了基于分块的ROAM算法进行多分辨率渲染,根据地形粗糙程度和视点位置,对地形进行有选择的细化,将庞大的三角形二叉树分为多个小二叉树,提高了地形构建效率,在此基础上建立地物要素模型,完成了数字地面模型的构建与多分辨率渲染。To solve the problem of massive data in regular grid, an idea of ROAM algorithm based on block is introduced into the design of multi-resolution rendering. The terrain is detailed selectively according to roughness and the position of view port. The great triangle bintree is divided into some smaller bintrees. The method improves the efficiency of the terrain model and then element model is modeled. DTM is established efficiently and multi-resolution is obtained.

关 键 词：数字地面模型 数字高程模型 规则网格 实时优化自适应地形网格 

分 类 号：TP311.52[自动化与计算机技术—计算机软件与理论]