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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 1,
  • Issue 9,
  • pp. 523-526
  • (2003)

Image fusion using non-separable wavelet frame

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Abstract

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 lowfrequency 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 inpreserving spectral and spatial information.

© 2005 Chinese Optics Letters

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