A Preliminary Review on Three-Dimensional City Model  

作　　者：ZHOU Qiming Department of Geography ,Hong Kong Baptist University,KowloonTong HongKong. ZHANG Wenjiang 

出　　处：《Geo-Spatial Information Science》2004年第2期79-88,共10页地球空间信息科学学报（英文）

摘　　要：In this paper a review on current research on 3DCM is presented, and an alternative approach by integrating the concepts and techniques of object\|oriented method and Computer Aided Design (CAD) is suggested. Through the approach urban spatial entities as objects are extracted, which are represented with primary 3D elements (node, edge, face and body) and their combinations. In the light of the concept of object, the method supports the multiple representation of Level of Details (LOD). More importantly, topological relationships between objects are described so that 3D topological operations can be implemented.In this paper a review on current research on 3DCM is presented, and analternative approach by integrating the concepts and techniques of object-oriented method andComputer Aided Design (CAD) is suggested. Through the approach urban spatial entities as objects areextracted, which are represented with primary 3D elements (node, edge, face and body) and theircombinations. In the light of the concept of object, the method supports the multiple representationof Level of Details (LOD). More importantly, topological relationships between objects aredescribed so that 3D topological operations can be implemented.

关 键 词：spatial data model urban GIS 3D city model object-oriented GIS 

分 类 号：P208[天文地球—地图制图学与地理信息工程]