大规模三维场景可视化的数据组织方法研究  

Research on Spatial Data Organization for Large Scale Scene

作　　者：翟巍[1] 迟忠先[1] 方芳[1] 吕成姝[1] 

机构地区：[1]大连理工大学计算机系,大连116024

出　　处：《计算机工程》2003年第20期26-27,139,共3页Computer Engineering

摘　　要：针对大规模三维场景的可视化问题，文章提出了以数据分割和动态调度为主要思想的解决方案，并重点对空间数据组织方法进行了研究和实践，提出通过数据的预处理和编码机制将空间数据组织成金字塔形的数据库结构，以支持动态的数据调度和绘制。文中通过具体应用的实例证明了该数据组织方法的有效性。This article studies the methods of organizing spatial data in visualization of a large scale scene. It proposes that technique like partition and dynamic I/O should be used ,and it also gives the coding scheme. After these pretreatment, the spatial data of a large scale scene will be organized in a pyramid structure. Based on this structure, and also by applying other optimizing methods like MRM,culling, multi-threads and so on, the visualization of large scale scene could be achieved. It has experiment on this method in developing a demo system for some water areas, and the result is satisfying.

关 键 词：GIS 三维场景 DEM 数据组织 LOD 可视化 数据分割 

分 类 号：P208[天文地球—地图制图学与地理信息工程]