摘要
结合国家基础地理信息数据库动态更新工程,本文采用基于DLG信息的重点要素快速变化发现技术,对省(市)级基础测绘成果与国家1∶50 000地形数据库进行了变化检测,达到了项目更新的技术要求,提高了更新工作效率。
With the dynamic updating of national fundamental geography information database, the differences between provinces (municipalities) level of basic surveying and mapping results and the national 1:50 000 fundamental geography information database have been detected using change detection of key elements based on DLG information. It met the technical requirements of project up- dating and improved the updating efficiency.
出处
《测绘与空间地理信息》
2012年第11期158-159,164,168,共4页
Geomatics & Spatial Information Technology
关键词
地形数据库
重点要素
变化检测
topographic data
key elements
change detection