基于拓扑参考的定性方向关系矩阵描述模型

摘要

定性方向关系描述是空间关系推理、空间关系语义匹配、模糊空间关系查询、面向对象遥感影像处理等的基础。针对现有定性方向关系模型存在的MBR区域描述缺陷，本文提出一种基于拓扑参考的定性方向关系描述模型，基于拓扑划分进行方向区域划分，定义拓扑参考反映不同拓扑划分中方向参考的变化，并以此为基础建立分层定性方向关系矩阵。新模型能够反映不同拓扑划分区域方向关系参考的变化，实现MBR区域定性方向关系的精确描述，能有效提高定性方向关系描述的精确性及准确性。%Directional relationship is one of the fundamental characters of spatial reasoning , spatial semantics matching ,fuzzy query of spatial relationship and object-oriented image analysis etc .A new qualitative direction-relation model based on topological reference is proposed to overcome the problems of description in the MBR region of reference object .Based on the topological division ,topological reference is defined to reflect the alteration of directional reference among different topological tiles .The new model overcomes the description difficulty of directional relations in the MBR and improves the accuracy and veracity of model .