一种三维网络GIS空间数据可视化方法的研究  

Study on the Method for 3D WebGIS Spatial Data Visualization

作　　者：江勇 

机构地区：[1]江苏省地质测绘院,江苏南京211100

出　　处：《北京测绘》2018年第2期170-174,共5页Beijing Surveying and Mapping

摘　　要：三维GIS空间数据可视化是三维GIS建模的基础,针对网络环境下三维GIS在空间可视化方面存在的不足,本文提出了一种基于VRML的真三维模型构建方法。以点、线、面和体四类拓扑元素之间的拓扑关系为依据组织建立数据库,结合分布式虚拟现实技术搭建起真三维模型网络发布平台,成功实现三维空间数据的可视化。研究表明,该方法能根据三维拓扑关系建立真三维模型,为三维数据的可视化和共享、真三维GIS空间分析提供了一种新的方案。3D GIS spatial data visualization is the basis of 3D GIS model. Aiming at the lack of 3D GIS spatial visualiztionunder network environment, the method of building real 3D model based on VRML was proposed in this paper.According to the topological relation among four elements which includes point, line, face and body to oestablish database. On this basis, combned with virtual reality technology, network publishingmodel was built and 3D spatial datavisualization was realized. The study showed thatthe way tcould establish real 3D model depended on 3D spatial topological relationships and provide a ndata and visualization and spatial analyze real 3D spatialentity.

关 键 词：三维空间数据 可视化 网络地理信息系统 虚拟现实建模语言 数据库 

分 类 号：P208[天文地球—地图制图学与地理信息工程]