遥感影像的冰川信息提取方法对比  

Comparative Study of Glaciers Information Extraction Method Based on Remote Sensing Image

作　　者：王高峰[1] 张廷斌[2] 张建平[3] 吴华 杨秋玲[5] 葛悉佑 

机构地区：[1]成都理工大学地质灾害防治与地质环境保护国家重点实验室,四川成都610059 [2]成都理工大学地球科学学院,四川成都610059 [3]西藏自治区国土资源厅,西藏拉萨850000 [4]西藏自治区地质调查院,西藏拉萨850000 [5]成都理工大学地球探测与信息技术教育部重点实验室,四川成都610059 [6]天津市勘察院,天津300191

出　　处：《地理空间信息》2010年第3期43-46,共4页Geospatial Information

基　　金：四川省教育厅自然科学青年项目(08ZB085)

摘　　要：以林芝地区为例,首先利用2001年10-12月ETM+遥感数据、地质图和DEM数据,经过遥感图像预处理生成冰川信息提取的基础影像。在此基础上采用波段比值法、主成分分析法、光谱角制图法、非监督分类法、监督分类法等进行冰川信息的自动提取,对各种提取方法进行了对比。结果表明,监督分类提取的冰川信息图像清晰、层次分明、分类边界清楚、满足冰川地貌解译的要求。最后通过实例分析得出监督分类法在提取林芝地区冰川信息时获得了较好的应用效果。This paper took the case of LinZhi area,first using the Landast-7 ETM＋ remote sensing data from October to December of 2001,geological maps and DEM data,through remote sensing image pre-processing,generating the basic image information of glaciers extraction.On this basis,using methods of band ratio,principal component analysis,spectral angle mapping,the non-supervised classification,supervised classification and so on to automatically extract information on glaciers,the various extraction methods were compared and analyzed.The results showed that glaciers extraction information images using supervised classification are so clear and structured,classification boundaries were of clarity that can meet the requirements of the glacial landforms interpretation.Finally,the example analysis showed supervised classification method in extracting glaciers information in LinZhi area obtained good application effect.

关 键 词：林芝地区 ETM+ 冰川 信息提取 监督分类 

分 类 号：P237[天文地球—摄影测量与遥感]