基于遥感的杭埠河流域水体的提取方法研究  

RS Based Water Extraction Method in Hangbu River Drainage Area

作　　者：吉文帅[1] 王心源[1] 张生根[1] 韩玉刚[1] 梁灿歌[2] 

机构地区：[1]安徽师范大学国土资源与旅游学院,安徽芜湖241000 [2]河南油田第二采油厂,河南南阳473000

出　　处：《国土资源信息化》2007年第5期36-39,共4页Land and Resources Informatization

摘　　要：通过遥感数据快速、精确的获取地物专题信息已经成为未来资源调查的发展趋势。在杭埠河流域水体变化研究中,由于杭埠河流域内地表湿润状况差异很大,以往的水体提取方法很难达到理想的效果,文章通过比较分析得出,在地表湿润状况差异较大的地区,非监督分类法,差值法、闽值法对水体的提取效果很不理想,而通过几种方法的结合并对谱间关系逐步分析来提取水体,则能够达到理想的效果。In the field of resources survey, it is the developing trend to use remote sensing technology to obtain the thematic information of the ground object rapidly and accurately. In the water changes research of Hangbu river drainage area, it is difficult to get ideal effects by the water extraction methods used in the past due to large difference in the surface humidification. Through comparing the water extraction effects of four different methods, namely ＂ non-supervision classification＂ , ＂ differential technique＂ , ＂ threshold value＂ and ＂ inter-spectrum relation＂ , we find that in the area where the surface humidification differs largely, the water extraction effects by ＂ non-supervision classification＂ , ＂ differential technique＂ and ＂ threshold value＂ are far from expected. However, through combining several methods and analyzing the inter-spectrum relation gradually, we can get an ideal water extraction effect.

关 键 词：遥感 水体提取 湿润状况 

分 类 号：P237[天文地球—摄影测量与遥感]