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.
出处
《测绘科学》
CSCD
北大核心
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)
关键词
点群
相似性
空白区域
特征因子
point cluster
similarity
blank area
characteristic factors
