基于大规模DEM数据的地形仿真算法

Measurement Method for Terrain Imitation based on Large Scale of DEM Data

针对大规模地形仿真的特点,介绍了大规模DEM数据的基于金字塔结构和分块的数据组织与管理方式.给出了数据的动态调度算法;实现了基于视点和区域起伏度的地形LOD简化.提出了一种基于分块缝合带的分块连接算法,并开发了一套大规模地形的实时地形仿真原型系统,通过实验证明该算法可行.

Focus on characteristics of large scale of terrain imitation, the paper introduces the DEM data, based on pyramid structure and block data combination and management, and obtains its dynamic measurement method, which realizes terrain LOD simplification in view of view point and regional undulation. It also suggests a block connection method based on block suture, and develop a set of terrain imitation stereotype system of large scale of terrain. The method is proved to be feasible by a test.