DEVELOPMENT OF A HYBRID MODEL FOR THREE-DIMENSIONAL GIS

作     者：SHI Wenzhong 

作者机构：Department of Land Surveying and Geoinformatics The Hong Kong Polytechnic University Kowloon Hong Kong 

出 版 物：《Geo-Spatial Information Science》 (地球空间信息科学学报（英文）)

年 卷 期：2000年第3卷第2期

页      面：6-12页

学科分类：081603[工学-地图制图学与地理信息工程] 081802[工学-地球探测与信息技术] 07[理学] 08[工学] 070503[理学-地图学与地理信息系统] 0818[工学-地质资源与地质工程] 0705[理学-地理学] 0816[工学-测绘科学与技术] 

主　　题：hybrid three-dimensional model TIN model octree model GIS 

摘      要：This paper presents a hybrid model for three-dimensional Geographical Information Systems which is an integration of surface- and volume-based models. The Triangulated Irregular Network (TIN) and octree models are integrated in this hybrid models. The TIN model works as a surface-based model which mainly serves for surface presentation and visualization. On the other hand, the octree encoding supports volumetric analysis. The designed data structure brings a major advantage in the three-dimensional selective retrieval. This technique increases the efficiency of three-dimensional data operation.