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Chen Jun ①② , Guo Wei ② (①National Geomatics Center, 1 Baisheng Village, Zizhuyuan, Beijing,China, 100044) (②LIESMARS,WTUSM,39 Luoyu Road, Wuhan, China,430070)  
Three dimensional topological data model is one of the key issues in the development of 3D GIS. Pigot et. al.(1992) proposed to develop such a topological data model, but his work was limited mainly to the definition of k d spatial objects (0≤ k ≤3) with k cell complexes embeded in the open euclidean 3 manifold. Molenaar and the others extended the 2d topological data structures by adding some 3D relations between data types, such as is in,is on, vertical and relief. The purpose of this paper is to define a 3D topological data model by partitioning 3D spatial objects into k simplex. The Entity Relation (ER) diagrams between 3D objects (point, line, surface and solid) and k simplex were analyzed firstly. Then was proposed a 3D topological data model represented with ER diagram. The methodologies for data organization and space partitioning of 3D objects were further discussed.
【Fund】: 国家教委霍英东教育基金 国家教委跨世纪优秀人才培养基金
【CateGory Index】: TP311.12,
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5 HOU Miaole1 XING Huaqiao1 ZHAO Xuesheng2 CHEN Jun3 (1 Department of Computer Science,Beijing Institute of Civil Engineering and Architecture, 1 Zhanlanguan Road,Beijing 100044,China)(2 Faculty of Resources & Safety Engineering,China University of Mining and Technology in Beijing, D 11 Xueyuan Road,Beijing 100083,China)(3 National Geomatics Center of China,1 Baishengcun,Zizhuyuan,Beijing 100044,China);Computing of Complicated Topological Relation in Spherical Surface Quaternary Triangular Mesh[J];武汉大学学报(信息科学版);2012-04
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