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Implementation strategies for hyperspectral unmixing using Bayesian source separation

Schmidt, Frédéric and Schmidt, Albrecht and Tréguier, Erwan and Guiheneuf, Maël and Moussaoui, Saïd and Dobigeon, Nicolas Implementation strategies for hyperspectral unmixing using Bayesian source separation. (2010) IEEE Transactions on Geoscience and Remote Sensing, vol. 48 (n°11). pp. 4003-4013. ISSN 0196-2892

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Official URL: http://dx.doi.org/10.1109/TGRS.2010.2062190

Abstract

Positive Source Separation (BPSS) is a useful unsupervised approach for hyperspectral data unmixing, where numerical non-negativity of spectra and abundances has to be ensured, such in remote sensing. Moreover, it is sensible to impose a sum-to-one (full additivity) constraint to the estimated source abundances in each pixel. Even though non-negativity and full additivity are two necessary properties to get physically interpretable results, the use of BPSS algorithms has been so far limited by high computation time and large memory requirements due to the Markov chain Monte Carlo calculations. An implementation strategy which allows one to apply these algorithms on a full hyperspectral image, as typical in Earth and Planetary Science, is introduced. Effects of pixel selection, the impact of such sampling on the relevance of the estimated component spectra and abundance maps, as well as on the computation times, are discussed. For that purpose, two different dataset have been used: a synthetic one and a real hyperspectral image from Mars.

Item Type:Article
Additional Information:Thanks to the Institute of Electrical and Electronics Engineers (IEEE). The original PDF can be found on the IEEE website: http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5570984
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Other partners > Ecole Centrale de Nantes (FRANCE)
Other partners > Ecole des Mines de Nantes (FRANCE)
Other partners > European Space Agency - ESA (UNITED KINGDOM)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Université de Toulouse > Université de Toulouse II-Le Mirail - UTM
Université de Toulouse > Université de Toulouse I-Sciences Sociales - UT1
Other partners > Université de Nantes (FRANCE)
Other partners > Université Paris-Sud 11 (FRANCE)
Laboratory name:
Statistics:download
Deposited By: Nicolas DOBIGEON

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