Multisensor image fusion with the undecimated discrete wavelet transform

With the ability of multiresolution analysis and image decomposition, the wavelet transform has been employed to remote sensing image fusion. The multiresolution analysis of the discrete wavelet transform does not preserve the translation invariance, and the undecimated discrete wavelet transform can resolve the nonstationarity through suppressing the downsampling operation. To fuse the multisensor remote sensing image, a new method based on the hue-intensity-saturation transform, high pass filter and undecimated discrete wavelet transform is proposed. The TM multispectral image and the SPOT panchromatic image are experimented, and both subjectively qualitative analysis and objectively quantitative evaluation verify the performance of the new method.