Abstract
In this work, a technique is presented for the fusion of multi-spectral (MS) and hyperspectral (HS) images to enhance the spatial resolution of the latter. The technique works in the wavelet domain, and is based on a Bayesian estimation of the HS image, assuming a joint normal model for the images, and an additive noise imaging model for the HS image. An appropriate estimation strategy is also proposed. The technique is compared to its counterpart in the spatial domain, and validated for noisy conditions. Further, its performance is compared to several state-of-the-art pansharpening techniques, in the case where the MS image becomes a panchromatic image, and to some MS and HS image fusion techniques from the literature.
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