基于Oracle Spatial的地籍地块空间拓扑关系判断  

A Computation Method of Parcels′ Topological Relations Based on Oracle Spatial

作　　者：周晓光[1] 岳国森[1] 魏金占[1] 赵仁亮[2] 朱建军[1] 向南平[1] 

机构地区：[1]中南大学信息物理工程学院 [2]国家基础地理信息中心,北京100044

出　　处：《中南大学学报（自然科学版）》2005年第2期317-322,共6页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(40301042);辽宁工程技术大学地理空间信息技术与应用实验室基金资助项目(2004009)

摘　　要：将地籍地块间空间拓扑关系的判断分为2个层次来处理:2 个简单地块间空间拓扑关系的判断;1 个简单地块与1个复合地块间空间拓扑关系的判断。2个简单地块间空间拓扑关系的判断可直接利用Oracle Spatial提供的空间关系查询操作算子来实现;复合地块和简单地块间空间拓扑关系的判断,按照双四元交模型(D4I)的思想,将其转化为2组简单地块,然后利用Oracle Spatial的空间关系查询操作算子来处理。研究结果表明:在OracleSpatial平台上实现了地籍地块间31种空间拓扑关系(包括2 个简单地块间的8 种空间拓扑关系和1 个简单地块与1个复合地块间的23种空间拓扑关系)的判断,并且这种判断方法同样适用于其他类型二维面域或复杂目标间空间拓扑关系的判断。A computation method of the topological relation between parcels was developed based on Oracle Spatial. In this paper, 31 kinds of topological relations between parcels are firstly distinguished according to D4I model, which includes 8 kinds of relations between two simple parcels, and 23 kinds of relations between a parcel with one hole and a simple parcel. Then the computation method of the topological relations was presented, the relations between simple parcels was ascertained directly by the query operators that Oracle Spatial supported. The results show that the relations between a parcel with one hole and a simple parcel can not be ascertained directly, and the parcel with one hole is divided into two simple parcels according to D4I model. Such kinds of relations can be ascertained by the relations of 2 pairs of simple parcels, which can be ascertained directly. In addition, a topological relations computation method between parcels is developed in this paper, which can determine 31 kinds of topological relations between two parcels. This method can be used to the topological relations computation of other regions and other composite entities in 2-dimension euclidean space.

关 键 词：地籍地块 0racle SPATIAL 空间拓扑关系 双四元交模型 操作算子 

分 类 号：P208[天文地球—地图制图学与地理信息工程]