利用拓扑和度量相结合的方法描述面目标间的空间关系  

Describing Spatial Relations between Area Objects via Combining Topology with Metrization

作　　者：邓敏[1] 李成名[2] 刘文宝[3] 

机构地区：[1]武汉大学遥感信息工程学院,湖北武汉430079 [2]中国测绘科学研究院GIS所,北京100039 [3]山东科技大学地球信息与工程学院,山东泰安271019

出　　处：《测绘学报》2002年第2期164-169,共6页Acta Geodaetica et Cartographica Sinica

基　　金：国家自然科学基金资助项目 ( 4 980 10 16 ;40 10 10 2 2 )

摘　　要：首先分析了基于 9元组模型描述目标间空间关系的不足 ,提出了基于点集拓扑和度量特性相结合的方法来分析和描述GIS中面目标间的拓扑空间关系 ,并给出了合理的几何度量参数及计算方法 ,增强了空间关系的可区分性 ,进而提高了空间分析的准确性。该方法将空间关系描述过程概括为 3步 :①目标发现与定位 ;②空间拓扑关系的分类 (粗略分类 ) ;③在空间拓扑关系粗略分类的基础上 ,引进几何度量参数 ,实现空间关系的精化。Some shortcomings of describing spatial relations based on the 9-intersection model are pointed out, and a new method with the combinations of topology and metrization of the point set is proposed. By means of this method, many cases of spatial relations between area objects can be distinguished, thus accuracy of spatial analysis will be improved, and some reasonable metric parameters and its computation methods are also given. In a word, processes of describing spatial relations will be classified as three steps: ① to find and locate spatial object; ② a rough classification for spatial relations between reference object and researched object based on the 9-intersection model; ③ on the basis of the second step, corresponding parameters will be introduced, thus to describe and distinguish spatial relations with more details.

关 键 词：拓扑 度量 空间关系 空间查询 空间分析 GIS 地理信息系统 

分 类 号：P208[天文地球—地图制图学与地理信息工程]