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Fusion of multispectral and hyperspectral images based on sparse representation

Wei, Qi and Bioucas-Dias, José M. and Dobigeon, Nicolas and Tourneret, Jean-Yves Fusion of multispectral and hyperspectral images based on sparse representation. (2014) In: 22nd European Signal and Image Processing Conference (EUSIPCO 2014), 1 September 2014 - 5 September 2014 (Lisbon, Portugal).

(Document in English)

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This paper presents an algorithm based on sparse representation for fusing hyperspectral and multispectral images. The observed images are assumed to be obtained by spectral or spatial degradations of the high resolution hyperspectral image to be recovered. Based on this forward model, the fusion process is formulated as an inverse problem whose solution is determined by optimizing an appropriate criterion. To incorporate additional spatial information within the objective criterion, a regularization term is carefully designed,relying on a sparse decomposition of the scene on a set of dictionaryies. The dictionaries and the corresponding supports of active coding coef�cients are learned from the observed images. Then, conditionally on these dictionaries and supports, the fusion problem is solved by iteratively optimizing with respect to the target image (using the alternating direction method of multipliers) and the coding coefcients. Simulation results demonstrate the ef�ciency of the proposed fusion method when compared with the state-of-the-art.

Item Type:Conference or Workshop Item (Paper)
Additional Information:Thanks to IEEE editor. The definitive version is available at http://ieeexplore.ieee.org The original PDF of the article can be found at : http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=6952575
HAL Id:hal-01178562
Audience (conference):National conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Université de Toulouse > Université Toulouse - Jean Jaurès - UT2J (FRANCE)
Université de Toulouse > Université Toulouse 1 Capitole - UT1 (FRANCE)
Other partners > Instituto de Telecomunicações - IT (PORTUGAL)
Laboratory name:
Deposited On:22 Jun 2015 09:33

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