混合多分辨率地形与空间矢量数据的可视化研究  

Research About Visualization of Hybrid Multi-resolution Terrain and Vector Data

作　　者：邹烷[1] 方金云[1] 刘金刚[2] 

机构地区：[1]中科院计算技术研究所,北京100080 [2]首都师范大学计算机科学联合研究院,北京100037

出　　处：《系统仿真学报》2006年第z1期324-325,共2页Journal of System Simulation

基　　金：国家"863"项目资助(2002AA114020;2001AA135210)。

摘　　要：能同时处理矢量和地形数据的混合地理信息系统逐渐成为研究的热点,其中待解决的难点是如何将复杂矢量数据实时渲染到多分辨率地形格网。结合实时优化自适应网格(Real-TimeOptimallyAdaptingMeshes,ROAM)地形简化算法,给出了关键数据结构及相关算法来实时显示多分辨率三维地形和2D空间矢量数据,并对算法性能做出分析并给出结论。The hybrid geometry information system which can process vector and terrain data at the same time has become a hot. And one of the key problems is how to render complex vector data over multi-resolution terrain. A key data structure and associated algorithm for the combined display of multi-resolution 3D terrain and 2D curve feature were proposed. Then a performance analysis was made and a conclusion is given.

关 键 词：实时优化自适应网格 数字高程模型 无缝叠加 矢量数据 二叉三角形树 

分 类 号：TP31[自动化与计算机技术—计算机软件与理论]