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遥感图像不同融合方法的适应性评价——以ZY-3和Landsat8图像为例

DOI: 10.6046/gtzyyg.2014.04.11, PP. 63-70

Keywords: ZY-3,Landsat8,光谱信息,空间信息,影像融合,质量评价

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Abstract:

目前对常用融合方法用于ZY-3和Landsat8卫星图像的适用性研究较少,为此,探讨了小波变换法(WT法)、相位恢复法(Gram_Schimdt,G-S法)、彩色标准化变换法(Brovey法)、主成分变换法(PCA法)、彩色空间变换法(IHS法)以及超分辨率贝叶斯法(Pansharp法)等6种融合方法对ZY-3和Landsat8图像的适用性,并从“光谱信息保真度”和“空间信息融入度”2个方面对融合图像进行了评价。结果表明:在空间信息融入方面,对于ZY-3图像,Pansharp法的信息融入度最差,IHS法的信息融入度最好,PCA法、Brovey法、G-S法和WT法次之;对于Landsat8图像,G-S法的信息融入度最好,WT法最差。在光谱信息保真方面,对于ZY-3图像,PCA法具有较高的光谱保真度,IHS法、G-S法和Brovey法次之,WT法最差;对于Landsat8图像,G-S法具有较高的光谱保真度,Pansharp法和Brovey法次之,IHS法、WT法和PCA法较差。

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