摘要
以偃师市为例,用SPOT-5正射影像图套合对比变更后的土地利用数据库,辅以专家知识,人机交互提取变化信息,通过外业调查核实变化信息,把外业成果图扫描矢量化,重建拓扑关系,用以更新县级土地利用数据库。
This paper studies a method of updating county-level land use database by taking Yanshi city for example. Changeable information is retrieved in the interaction process with the assistance of specialists after having the modified land use database overlapped and contrasted by the DOM of SPOT-5. Then, a detailed investigation is carried out to check the information. Finally, maps of detailed investigation are vectorized and connected with corresponding attribute data, and the topology relations are rebuilt,thus completing the updating of the database.
出处
《国土资源科技管理》
2004年第3期68-71,共4页
Scientific and Technological Management of Land and Resources
关键词
遥感
土地利用
数据库
更新
remote sensing
land use
database
update
