Fast wavelet-based pansharpening of multi-spectral images
Mitianoudis, Nikolaos and Tzimiropoulos, Georgios and Stathaki, Tania (2010) Fast wavelet-based pansharpening of multi-spectral images. In: 2010 IEEE International Conference on Imaging Systems and Techniques (IST), 1-2 July 2010, Thessaloniki, Greece.
Remote Sensing systems enhance the spatial quality of low-resolution Multi-Spectral (MS) images using information from Pan-chromatic (PAN) images under the pansharpening framework. Most decimated multi-resolution pansharpening approaches upsample the low-resolution MS image to match the resolution of the PAN image. Consequently, a multi-level wavelet decomposition is performed, where the edge information from the PAN image is injected in the MS image. In this paper, the authors propose a pansharpening framework that eliminates the need of upsampling of the MS image, using a B-Spline biorthogonal wavelet decomposition scheme. The proposed method features similar performance to the state-of-the-art pansharpening methods without the extra computational cost induced by upsampling.
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