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《Computer Engineering and Applications》 2013-03
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Remote sensing image fusion method based on wavelet packet transform with Sobel operator

WEN Liming, PENG Li School of Internet of Things Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China  
Aiming at the problem that spatial information and spectral information are not well compatible in remote sensing image fusion, a remote sensing image fusion method is proposed based on wavelet packet transform with Sobel operator. In this method, multi-spectral image and high resolution image are decomposed by wavelet packet transform. According to the threshold, it uses different fusion rules to get low-frequency coefficient of wavelet, uses Sobel operator to extract high-frequency characteristic value of image, and adopts the best value method to get high-frequency coefficients. Experimental results show that the pro-posed algorithm is superior to the traditional IHS(Intensity, Hue, Saturation)transform, wavelet transform and a combination of both methods. This method not only better retains the spectral information of image, but also enhances the image details, edge feature, and clarity of the image has been improved very well.
【Fund】: 国家自然科学基金(No.60973095)
【CateGory Index】: TP751
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【Citations】
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