空白区域对点群相似性特征因子的影响  

Blank area's influence on the similarity characteristic factors for point cluster

作　　者：段晓旗 刘涛[1] 武丹[1,2] 邵达青 

机构地区：[1]兰州交通大学,兰州730070 [2]甘肃省地理国情监测工程实验室,兰州730070

出　　处：《测绘科学》2016年第12期75-80,100,共7页Science of Surveying and Mapping

基　　金：国家重点研发计划资助项目(2016YFC0803106);国家自然科学基金项目(41201476);地理空间信息工程国家测绘局重点实验室开放研究基金项目(201409)

摘　　要：针对空白区域对点群相似性特征因子的影响,该文首先综述相关研究文献并整合影响点群相似性的要素,包括拓扑关系、方向关系、距离关系和分布范围;然后通过自适应聚类方法提取点群目标中的空白区域。通过对考虑空白区域与未考虑空白区域点群目标之间的拓扑关系、方向关系、距离关系和分布范围的相似度计算并进行对比,发现点群中的空白区域对点群的拓扑关系之间的相似度计算影响较小,对点群的方向关系、距离关系和分布范围的相似度计算影响较大。Aiming at the influence of blank area on similarity of point clusters,in this paper,first,factors which influce similarity assessment between point clusters were put forward,including topological relations,directional relations,distance relations and distribution area.Then an adaptive clustering approach was applied to extract blank area of point cluster.The factors＇ similarity degree of point cluster with and without blank area were calculated respectively.Comparing result showed that similarity degree had minor changes in topological relations,but it had major changes in directional relations,distance relations and distribution area.

关 键 词：点群 相似性 空白区域 特征因子 

分 类 号：P208[天文地球—地图制图学与地理信息工程]