期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2002
卷号：XXXIV Part 4
出版社：Copernicus Publications
摘要：The well-kno wn 9 -intersection model has been widely used to describe spatial relations in GIS databases. Ho wever, the model cannot effectively distinguish the difference of spatial relations between two disjoint area objects with only a short distance between each other from those of with a relatively long distance because the model is only based on the topology property o f the point sets without considering their metric property. In this paper, we begin with reviewing the 9- intersection model, and then propose a new approach to improve it by combining the point set topology with metric property. The method proposed in this paper can partly eliminate the limitation of the model. In o ur method the representatio n of spatial relations between area objects includes three steps: (1) to find and locate spatial objects, (2) to make a approximate classification for spatial relations between a selected reference object and a target one using the 9-intersection model, and (3) to identify the spatial relations in more detail by applying metric parameters
