A Reasoning Method of Spatial Relations on the Spherical Digital Space

摘要：

Spatial relation between spatial objects is a very important topic for spatial reasoning,query and analysis in global GIS.However,the most popular models in current use,which are based on the 2D Euclidean space (such as raster),exist some fundamental deficiency in theory for spatial relation reasoning in the spherical digital space (SDS).In this paper,a reasoning method of spatial relations in the SDS based on manifold is approached,in which:(1) the topological definitions,properties,and descriptions of spatial objects in SDS are presented;(2) appropriate operators from set operators (i.e.intersection,difference,difference by,symmetric difference,etc.) are utilized to distinguish the spatial relations between neighboring spatial objects;and (3) the value of the Euler number of symmetric difference is used for the detailed computational results of set operations;In this method,the 8 types basic topological relations between spatial objects in SDS can be distinguished accurately and easily from simple to detailed level for different requirements.

关键词： Spherical digital space Spatial relations Manifold Multi- operators

作者: Xuesheng ZHAO Miaole HOU Wenbin SUN Zhiyuan YAN

作者单位: Department of Surveying,China Univ.of Mining and Technology (Beijing);D11,Xueyuan Road,Beijing 10008 Department of Surveying,Beijing Institute of Civil Engineering and Architecture,1 Zhanlanguan Road,B

会议类型: 国际会议

会议名称: 第16届国际地理信息科学与技术大会(16th International Conference on GeoInformatics and the Joint Conference)

会议地点: 广州

会议语种:英文

在线出版日期: 2008-06-28（万方平台首次上网日期，不代表论文的发表时间）