面向地上下无缝集成建模的新一代三维地理信息系统  

The new 3DGIS for seamless integration of terrain overground and underground entities

作　　者：吴立新[1] 车德福[2] 郭甲腾[1] 

机构地区：[1]东北大学3S与数字矿山研究中心,辽宁沈阳110004 [2]中国矿业大学3S与沉陷工程研究所,北京100083

出　　处：《测绘工程》2006年第5期1-6,共6页Engineering of Surveying and Mapping

基　　金：国家杰出青年基金资助项目(50525414);国家自然科学基金资助项目(40571137);北京市自然科学基金重点资助项目(4041005)

摘　　要：地上下无缝集成三维建模是新一代3DGIS的主要标志,地上下无缝集成建模已成为当务之急。在三维空间建模技术现状与存在问题、目标层次与功能需求及三维空间模型现状与趋势分析的基础上,介绍了地上下集成建模的两个层次和无缝集成的基本原理;阐述以CD-TIN为纽带、以BRep-TIN-GTP为核心、以三层混合模型为成份的地上下集成空间数据模型的概念结构与典型逻辑关系。并结合城市与矿山应用,介绍该集成模型在GeoMo3D系统中初步实现后的可视化效果。同时,指出了与地上下集成建模相关的近年3DGIS的主要攻关方向和重点理论难题。The seamless integration of terrain, overground and underground entities is the principal symbol of upto-date 3DGIS, and the seamless integrated spatial modeling has been an urgent demand. Based on the analysis of present technologic situation and issues on 3D spatial modeling, the goal levels and function demands for 3D spatial modeling and the present situation and developing trends of 3D spatial model, this paper introduces the two levels of integrated modeling for terrain, overground and underground entities as well as the primary principles for seamless integration. The notional structure and typically logical relations of a integrated spatial data model, which takes constraint delaunay triangulation network （CD-TIN） as a link, BRep-CDTIN-GTP as its core and three compound models as its components, is presented. As its application in city and mine being an example, the visualization effect of the new integrated model realized inside the 3D modeling system, G-eoMo3D, is shown. In the meantime, the chief research directions and theoretical issues for 3DGIS related to seamless integrated modeling for the coming years are pointed out.

关 键 词：三维地理信息系统 空间建模 无缝集成 地上下 约束TIN GTP 

分 类 号：P208[天文地球—地图制图学与地理信息工程]