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
