摘要
不一致性探测是多源空间数据集成与融合、空间数据变化检测与更新、多尺度地理信息数据一致性维护的重要环节。居民地作为现实世界中变化最活跃的地理要素之一,其在多尺度地理信息数据库中表现出来的几何不一致性问题十分突出。在分析多尺度居民地面/面目标几何不一致性根源的基础上,将多尺度居民地面/面目标几何不一致分为实体表达状态不一致和实体表达形态不一致。提出了利用实体表达状态差异、空间位置差异、形状差异、大小差异以及面积叠置率探测多尺度同名面状居民地几何不一致性的方法,并给出了具体的实验步骤。实验结果表明,该方法能够识别出不同尺度数据中存在几何不一致性的同名面状居民地,不一致性探测结果可以作为多尺度居民地面/面目标几何一致性处理的依据。
Inconsistency detection is an important step of multi-source spatial data integration and fusion,spatial data change detection and updating,and multi-scale spatial data consistency maintenance.As one of the most active change elements in the real world,the geometry inconsistency problem of habitation in multi-scale spatial database is very serious.On the base of analyzing geometry inconsistency root,geometry inconsistency of the same area habitation was divided into entity expression status inconsistency and entity expression shape inconsistency.Geometry inconsistency detection method of the same area habitation was proposed in this paper,which utilized the differences of object′s expression state,spatial location,shape,size and area overlap ratio,and the specific experimental steps were given in this paper.The results showed that this method could recognize the same area habitation that had geometry inconsistency in multi-scale data,and the inconsistency detection results could provide basis for multi-scale corresponding area habitation consistency processing.
出处
《地理与地理信息科学》
CSCD
北大核心
2016年第6期7-11,共5页
Geography and Geo-Information Science
基金
国家自然科学基金项目(41201391
41571399)
关键词
多尺度居民地
同名实体匹配
几何不一致性
空间位置差异
形状差异
大小差异
multi-scale habitation
same entity matching
geometry inconsistency
spatial location difference
shape difference
size difference
