“开放街道地图”建筑物目标直角修正方法  

A wall orientation based right angle correction method for osm residential objects

作　　者：赵彬彬[1,2] 张宏奎 王倩 唐忠立 汤鑫 ZHAO Binbin;ZHANG Hongkui;WANG Qian;TANG Zhongli;TANG Xin(School of Traffic and Transportation Engineering,Changsha University of Science&Technology,Changsha 410114,China;Engineering Laboratory of Spatial Information Technology of Highway Geological Disaster Early Warning in Hunan Province(Changsha University of Science&Technology),Changsha 410114,China)

机构地区：[1]长沙理工大学交通运输工程学院,长沙410114 [2]公路地质灾变预警空间信息技术湖南省工程实验室(长沙理工大学),长沙410114

出　　处：《测绘科学》2022年第1期196-203,211,共9页Science of Surveying and Mapping

基　　金：国家自然科学基金项目(41301404);湖南省自然科学基金资助项目(14JJ3083);长沙理工大学公路地质灾变预警空间信息技术湖南省工程实验室开放基金资助项目(kfj160603)。

摘　　要：针对"开放街道地图"平台建筑物目标轮廓存在的"伪直角"问题,提出了一种基于墙体方向的建筑物目标直角修正新方法。分析了其建筑物目标的几何特征及表达,在保持建筑物目标主体方位的基础上,较好地解决了现有方法对不规则建筑物目标修正结果不稳定的问题。对比实验表明,该方法受建筑物目标形状影响小,在建筑物目标位置精度保持和几何形状保持等方面表现更优,极大地改善了"开放街道地图"建筑物目标几何精确性,进而有效提高了其数据质量。The creation of residential objects,e.g.,building footprints,in OSM is error prone.Most buildings are designed with square angles,but once in OSM,the angles may not be exactly right,i.e.,pseudo-right.This study proposed a wall orientation based(WOB)method for correcting residential objects’right angles,which analyzes the expression and geometric features of residential objects in OSM.The vertices of a residential object’s edge are first projected based on the orientation of its walls,so that the adjacent edges of a residential object are perpendicular to each other.Meantime,the method is tested on two sets of real datasets from OSM,and assessed against existing methods,proving the effectiveness and superiority of the contribution.The WOB method is stable,hardly affected by the residential objects’shape,while dramatically preserving the initial shape and position of the buildings,which can effectively improve the data quality and extended usage of OSM.

关 键 词：数据质量 开放街道地图 建筑物目标 墙体方向 直角修正 

分 类 号：P208[天文地球—地图制图学与地理信息工程]