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基于区域性椭球面的三维GIS可视化模型 被引量:3

Three-dimensional Geographic Information System Visualization Model Depended on Ellipsoid-based Digital Terrain Model
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摘要 在椭球面数字地面模型 (DTM)的基础上 ,结合道路设计领域的特点 ,将空间实体划分为独立点状实体、线实体、紧贴于地面的面实体和体实体等类型 ,通过空间现象与椭球面DTM的叠加 ,首次提出了一种直接基于椭球面的三维GIS可视化模型 ,具体实现了道路、河流、湖泊、建筑物等实体模型 ,并进一步探讨了基于椭球面上测地坐标系统的三维可视化方法 ,从而真正实现了在一个统一的真三维坐标系中表达和处理空间现象 . In this paper, the principle and method of 3D visualization by geodesic coordinate system of ellipsoidal surface are proposed.A three-dimensional model for geographic information system(GIS) visualization by ellipsoid-based digital terrain model(DTM) is suggested for the first time.In this model spatial objects are classified as types of point,line,surface attached to terrain,body objects.By overlapping spatial phenomenon with ellipsoid-based DTM,these models of spatial entities,such as road model,rive model,lake model and building model are achieved and demonstrated in 3D visualization.
作者 冯琰 施一民
出处 《同济大学学报(自然科学版)》 EI CAS CSCD 北大核心 2004年第9期1192-1196,共5页 Journal of Tongji University:Natural Science
基金 国家自然科学基金资助项目 (4 99710 67)
关键词 椭球面 数字地面模型 区域性椭球面 三维GIS可视化模型 测地坐标系 空间实体 ellipsoid-based digital terrain model regional ellipsoidal surface three-dimensional geographic information system visualization mode geodesic coordinate system spatial entity
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参考文献1

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同被引文献24

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