基于高光谱和高分辨率影像的土地利用数据库更新研究  

Updating method of land use database based on hyper-spectral and high resolution images

作　　者：张定祥[1] 李宪文[1] 杨冀红[1] 

机构地区：[1]中国土地勘测规划院,北京100035

出　　处：《农业工程学报》2004年第6期272-276,共5页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家高技术研究发展计划(863计划)经费资助(2001AA136020-2)

摘　　要：探讨了基于高光谱和高分辨率影像结合下的1∶1万土地利用数据库更新方法。首先应用宜兴试验区128波段OMIS-I机载成像光谱数据,借助基期的土地利用数据库,采用土地利用类型分区控制下的光谱匹配分类获得土地利用/土地覆盖自动分类结果。通过分类结果与历史土地利用数据运算得到土地利用可疑变化区与变化类型。采用高光谱数据和SPOT2.5m全色波段融合影像为底图,在土地利用可疑变化区引导下,采用人机交互方式对变化区矢量数据更新。最后,以高精度GPS配合下进行变化区域野外调查验证,内业修改处理后生成新的土地利用数据库。This paper probes into the method for updating land use map at a scale of 1∶10000 based on hyper-spectral and high resolution Images. Firstly, under the control of land use types from former land use database, a land use/land cover map is acquired by spectral matching classification method using OMIS-I Airborne Imaging Spectrometer Data in Yixing. Secondly, changed areas are detected by image math operation between class map and former land use map. Thirdly, using image merged by hyper-spectral and SPOT-5 pan band data as base map, leading by former land use database at a scale of 1∶10000,vector data among dubious area are updated in a mutual computer-aid mode. Then, in order to validate the dubious changed areas,a field investigation is done with the help of GPS. Finally, land use database is updated when the data are amended indoors according to investigated results.

关 键 词：成像光谱数据 分区控制 分层分类 数据融合 0MIS-I 

分 类 号：F301[经济管理—产业经济]