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Image fusion using non-separable wavelet frame 被引量:3

Image fusion using non-separable wavelet frame
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摘要 In this paper, an image fusion method is proposed based on the non-separable wavelet frame (NWF) for merging a high-resolution panchromatic image and a low-resolution multispectral image. The low-frequency part of the panchromatic image is directly substituted by multispectral image. As a result, the multispectral information of the multispectral image can be preserved effectively in the fused image. Due to multiscale method for enhancing the high-frequency parts of the panchromatic image, spatial information of the fused image can be improved. Experimental results indicate that the proposed method outperforms the intensity-hue-saturation (IHS) transform, discrete wavelet transform and separable wavelet frame in preserving spectral and spatial information. In this paper, an image fusion method is proposed based on the non-separable wavelet frame (NWF) for merging a high-resolution panchromatic image and a low-resolution multispectral image. The low-frequency part of the panchromatic image is directly substituted by multispectral image. As a result, the multispectral information of the multispectral image can be preserved effectively in the fused image. Due to multiscale method for enhancing the high-frequency parts of the panchromatic image, spatial information of the fused image can be improved. Experimental results indicate that the proposed method outperforms the intensity-hue-saturation (IHS) transform, discrete wavelet transform and separable wavelet frame in preserving spectral and spatial information.
出处 《Chinese Optics Letters》 SCIE EI CAS CSCD 2003年第9期523-526,共4页 中国光学快报(英文版)
基金 This research was supported by the National‘863’Project of China.(No.200lAA135091), the Shanghai Key Project(No. 02DZ15001) and the Aviation Science Foundation of China (No.02D57003).
关键词 Wavelet transforms Wavelet transforms
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