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电子学报  2013 

基于采样二通道不可分小波的多光谱图像融合

DOI: 10.3969/j.issn.0372-2112.2013.04.014, PP. 710-716

Keywords: 图像融合,二通道抽样不可分小波,多光谱图像,全色图像

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Abstract:

针对基于非下采样不可分小波图像融合方法空间分辨率不高、基于张量积小波融合方法会出现方块效应的不足,提出了一种基于伸缩矩阵为[1,1;1,-1]的二通道采样不可分小波的多光谱图像和全色图像融合方法.利用矩阵扩充方法,构造了一组新的不可分低通滤波器和高通滤波器组,利用所设计滤波器组分别对多光谱图像的亮度分量和全色图像作下采样的多尺度不可分小波分解,分别对分解后的低频子图像和高频子图像按不同的融合规则进行融合.实验结果表明,其保持光谱信息的能力和保持空间分辨率信息的能力比基于IHS变换融合方法、基于DWT的融合方法、基于IHS-DWT的融合方法、基于IHS-Contourlet变换的融合方法、基于IHS-Curvelet变换的融合方法、SRF方法都强,与基于非下采样的二通道不可分正交小波和不可分双正交小波融合方法相比,该方法能保持较好的整体光谱信息和较高的空间分辨率信息.

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