地形图数据地物变化自动识别方法及其应用  

Automatic identification of features changed in topographic map

作　　者：刘洪江[1] 

机构地区：[1]杭州市勘测设计研究院,杭州310012

出　　处：《工程勘察》2012年第7期62-65,共4页Geotechnical Investigation & Surveying

基　　金：杭州市1:500基础地形图跟踪修测

摘　　要：本文对地形图修测更新的地物变化特性进行了分析,提出了变化地物自动识别的方法,并以杭州为例,介绍了相应流程和简要算法。该方法已成功应用于杭州市1∶500基础地形图跟踪修测项目,具有较好的准确性,提高了转换入库工作的效率。In this paper, changes of features in topographic map revision are analyzed and the method of automatic identifying the changed features is proposed. The corresponding procedures and brief algorithm based on Hangzhou topographic map revision are introduced. The method has successfully applied in the project of Hangzhou dynamic revision of 1 ： 500 topographic map, which has a better accuracy and improved efficiency on data recording and conversion.

关 键 词：地形图修测 地形图数据 变化地物 自动识别 

分 类 号：P208[天文地球—地图制图学与地理信息工程]