摘要
空间对象的确定性与不确定性处理是空间数据库研究的一个重要方面。在扩展9-交模型基础上,给出了空间中具有确定端点的不确定简单线及不确定区域的相关定义,据此对其相关的拓扑谓词进行了实现,得到联合完备且互不相交的拓扑关系,并通过对扩展9-交模型的简化,对拓扑关系进行了编码。以上过程可指导空间拓扑关系的算法实现。
The certainty and uncertainty of spatial objects is important for study of spatial data base.A topological predicts represents the jointly exhaustive and pairwise disjoint relations between uncertain simple line with certain endpoints and other spatial objects are concluded based on extending nine-intersection model.The simplifying extending nine-intersection model is used for encoding the topological relations which is a guidance for the implementation of algorithm.
引文
[1]吴长彬,闾国年.空间拓扑关系若干问题研究现状的评析[J].地球信息科学学报,2010,12(4):524-531.
[2]Egenhofer M J.A Formal Definition of Binary Topological Relationships[C].International Conference on Foundations of Data Organization and Algorithms.Springer-Verlag,1989:457-472.
[3]Clementini E,Di F P.Approximate topological relations[J].International Journal of Approximate Reasoning,1997,16(2):173-204.
[4]张骏,秦小麟,包磊.一种三维空间9-交模型的简化方法[J].南京航空航天大学学报,2006,38(3):335-340.
[5]包磊,秦小麟.随时间演化的不确定区域间拓扑关系判定[J].中国图象图形学报,2006,11(6):883-889.
[6]张骏,秦小麟.利用简化9交模型进行三维拓扑分析[J].计算机辅助设计与图形学学报,2006,18(12):1817-1823.
[7]安晓亚,杨云,刘平芝.基于拓扑谓词的空间拓扑关系相似性度量模型与应用[J].地球信息科学学报,2013,15(2):159-165.