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测绘学报  2015 

高山冰川多时相多角度遥感信息提取方法

DOI: 10.11947/j.AGCS.2015.20130514, PP. 59-66

Keywords: 冰川提取,山体阴影,全域—局部,多角度

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Abstract:

提出一种多角度遥感影像的冰川信息提取方法.通过"全域—局部"的阈值分割方法获取短时期内不同时相的遥感影像的冰雪边界,结合地形信息和多时相遥感影像的太阳角度信息,联合消除山体阴影对冰川的遮挡,并以多期影像的最小冰雪边界作为最佳冰川边界.以托木尔峰西侧冰川为研究对象,采用2009—2010年4个时相的遥感影像提取冰川信息.结果表明多角度遥感提取的冰川边界效果好,能有效地排除积雪与山体阴影的干扰.

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