摘要
水系流向是基础地理信息数据库水系数据的重要特征之一,准确的流向是下一步数据分析应用的基础。而基于摄影测量先内后外的采集方式容易导致流向采集错误,若以人工方式检查费时费力且容易有遗漏。针对这一情况,本文设计了全场景水系线方向自动化检查算法,包括交汇冲突检查与落差异常检查两部分。算法全面可靠,无需叠加外部数据,大大减少了人工比对的工作量,提高了质检效率。
The flow direction is one of the important characteristics of the water system data of the basic geographic information database.The accurate flow direction is the basis of the next data analysis application.The collection method based on the inside and outside of the photogrammetry easily leads to the flow direction acquisition error.Manual inspection is time-consuming,laborious and easy to be missed.Considering this situation,this paper designed an full-scene automatic inspection algorithm for flow direction of water system,including two parts:intersection conflict check and drop abnormality check.The algorithm is comprehensive and reliable,and does not need to introduce external data,which greatly reduces the workload of manual intervention and improves the efficiency of quality inspection.
作者
于倩
YU Qian(Shandong Provincial Institute of Land Surveying and Mapping, Jinan Shandong, 250000, China)
出处
《北京测绘》
2020年第4期528-531,共4页
Beijing Surveying and Mapping
关键词
水系流向
交汇冲突
落差异常
全场景
自动化质检
flow direction of water system
intersection conflict
drop abnormality
full scene
automatic check
