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A new Bayesian unmixing algorithm for hyperspectral images mitigating endmember variability

Halimi, Abderrahim and Dobigeon, Nicolas and Tourneret, Jean-Yves and Honeine, Paul A new Bayesian unmixing algorithm for hyperspectral images mitigating endmember variability. (2015) In: 40th IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2015), 19 April 2015 - 24 April 2015 (Brisbane, Australia).

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Official URL: http://dx.doi.org/10.1109/ICASSP.2015.7178415

Abstract

This paper presents an unsupervised Bayesian algorithm for hyperspectral image unmixing accounting for endmember variability. Each image pixel is modeled by a linear combination of random endmembers to take into account endmember variability in the image. The coefficients of this linear combination (referred to as abundances) allow the proportions of each material (endmembers) to be quantified in the image pixel. An additive noise is also considered in the proposed model generalizing the normal compositional model. The proposed Bayesian algorithm exploits spatial correlations between adjacent pixels of the image and provides spectral information by achieving a spectral unmixing. It estimates both the mean and the covariance matrix of each endmember in the image. A spatial classification is also obtained based on the estimated abundances. Simulations conducted with synthetic and real data show the potential of the proposed model and the unmixing performance for the analysis of hyperspectral images.

Item Type:Conference or Workshop Item (Paper)
Additional Information:Thanks to IEEE editor. The definitive version is available at http://ieeexplore.ieee.org This papers appears in : Acoustics, Speech and Signal Processing (ICASSP), 2015 IEEE International Conference on. ISBN : 978-1-4673-6997-8 The original PDF of the article can be found at: http://ieeexplore.ieee.org/document/7178415/ Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
HAL Id:hal-01387760
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Centre National des Etudes Spatiales - CNES (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Ecole Nationale de l'Aviation Civile - ENAC (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
Other partners > Thales (FRANCE)
Other partners > Telecom ParisTech (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Université de Toulouse > Université Toulouse - Jean Jaurès - UT2J (FRANCE)
Université de Toulouse > Université Toulouse 1 Capitole - UT1 (FRANCE)
Other partners > Université de Technologie de Troyes - UTT (FRANCE)
Laboratory name:
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Deposited By: IRIT IRIT
Deposited On:05 Oct 2016 09:26

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