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测绘学报  2015 

顾及空间相关性的遥感影像信息量的度量方法

DOI: 10.11947/j.AGCS.2015.20140417, PP. 1117-1124

Keywords: 信息熵,信息量,变异函数,空间相关性,加性噪声,遥感影像

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Abstract:

提出了一种结合信息论与地学统计法的遥感影像信息量计算的方法.此方法基于遥感影像加性噪声模型和互信息上界的计算原理,同时考虑了噪声和空间相关性等影响遥感影像信息量的因素,适于计算具有稳健空间相关性、不同地物类型的光学影像的信息含量.利用LandsatTM影像子集,分别计算了城市、农田、山地3种不同地物类型的影像信息量.结果表明,城市含有最大的信息量,同时影像信息量与影像方差呈对数正相关关系.

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