城市景观三维模型库的原理、构建及应用  

Research on the 3D model database of city landscape

作　　者：王继周[1] 李成名[1] 

机构地区：[1]中国测绘科学研究院GIS研究所,北京100039

出　　处：《测绘科学》2007年第4期20-22,共3页Science of Surveying and Mapping

基　　金：国家973计划重大基础研究前期研究专项(2002CCA04700)

摘　　要：随着“数字城市”建设的兴起,如何实现城市景观的精确三维重建正成为目前的研究热点。现实世界的复杂性决定了对其进行数字化三维表达的复杂性,为实现城市景观的快速三维重建,本文提出建立城市景观三维模型库的思路。基于城市地物人工构造所具有的相似性特征,将其进行系统性的总结归纳,为不同地物的建模服务。本文设计了由建筑物特征库、建筑物纹理库、地面覆盖纹理库和独立地物模型库组成的城市模型库结构,并通过在若干三维数字城市工程中的实际应用对具体构建方法及使用效果进行了研究。Now accurate three-dimensional reconstruction of city scene has been a focus in the geographic science field. Because the complexity of reality,it is very difficult to realize this target. Aiming at implementing the quick reconstruction of city, the paper puts forward the concept of 3D model database. The database is made up of many three-dimensional models, which are built from the similar attributes of city. The authors design the structure of 3D model database, which includes building attribute database, building texture database, ground texture database and independent object database. This 3D city model database has been used in some Digital City projects and it is proved efficiently.

关 键 词：数字城市 城市景观 三维重建 模型库 

分 类 号：P208[天文地球—地图制图学与地理信息工程]