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A novel remote sensing image fusion scheme based on NSCT and Compressed Sensing

机译:基于NSCT和压缩感知的遥感影像融合方案

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In this letter, we propose a novel remote sensing image fusion method based on the non-subsampled contourlet transform and the compressed sensing (CS) theory. Method First, the IHS transformation of the multispectral images is conducted to extract the 1 component. Secondly, the panchromatic image and the component intensity of the multispectral image are decomposed by NSCT. Then the NSCT coefficients of high and low frequency subbands are fused by different rules, respectively. For the high frequency subbands, the absolute maximum selection rule is used to integrate high-pass subbands; while the adaptive regional energy weighting rule is proposed to fuse low-pass subbands. The sparse coefficients are fused before being measured by Gaussian matrix. The fused image is accurately reconstructed by Compressive Sampling Matched Pursuit algorithm (CoSaMP). Some experiments are taken to investigate the performance of our proposed method, and the results prove its superiority to the counterparts.
机译:在这封信中,我们提出了一种基于非下采样Contourlet变换和压缩感知(CS)理论的新型遥感图像融合方法。方法首先,对多光谱图像进行IHS变换以提取1分量。其次,通过NSCT分解全色图像和多光谱图像的分量强度。然后分别用不同的规则融合高频子带和低频子带的NSCT系数。对于高频子带,使用绝对最大选择规则来合并高通子带;提出了自适应区域能量加权规则融合低通子带。稀疏系数在通过高斯矩阵测量之前先经过融合。通过压缩采样匹配追踪算法(CoSaMP)可以准确地重建融合图像。通过实验研究了该方法的性能,结果证明了该方法的优越性。

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