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Multiband Image Fusion Based on Spectral Unmixing

Wei, Qi and Bioucas-Dias, José M. and Dobigeon, Nicolas and Tourneret, Jean-Yves and Chen, marcus and Godsill, Simon Multiband Image Fusion Based on Spectral Unmixing. (2016) IEEE Transactions on Geoscience and Remote Sensing, vol. 54 (n° 12). pp. 7236-7249. ISSN 0196-2892

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Official URL: http://dx.doi.org/10.1109/TGRS.2016.2598784

Abstract

This paper presents a multiband image fusion algo- rithm based on unsupervised spectral unmixing for combining a high-spatial–low-spectral-resolution image and a low-spatial– high-spectral-resolution image. The widely used linear observa- tion model (with additive Gaussian noise) is combined with the linear spectral mixture model to form the likelihoods of the obser- vations. The nonnegativity and sum-to-one constraints resulting from the intrinsic physical properties of the abundances are intro- duced as prior information to regularize this ill-posed problem. The joint fusion and unmixing problem is then formulated as maximizing the joint posterior distribution with respect to the endmember signatures and abundance maps. This optimization problem is attacked with an alternating optimization strategy. The two resulting subproblems are convex and are solved efficiently using the alternating direction method of multipliers. Experiments are conducted for both synthetic and semi-real data. Simulation results show that the proposed unmixing-based fusion scheme im- proves both the abundance and endmember estimation compared with the state-of-the-art joint fusion and unmixing algorithms.

Item Type:Article
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/document/7567518/
HAL Id:hal-01406997
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Other partners > Nanyang Technological University - NTU (REPUBLIC OF SINGAPORE)
Other partners > University of Cambridge (UNITED KINGDOM)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS (FRANCE)
Université de Toulouse > Université Toulouse - Jean Jaurès - UT2J (FRANCE)
Université de Toulouse > Université de Toulouse I-Sciences Sociales - UT1 (FRANCE)
Other partners > Universidade de Lisboa - ULisboa (PORTUGAL)
Laboratory name:
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Deposited By: Jean-yves TOURNERET
Deposited On:01 Dec 2016 12:57

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