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Modified Independent Component Analysis for Initializing Non-negative Matrix Factorization : An approach to Hyperspectral Image Unmixing

Benachir, Djaouad and Deville, Yannick and Hosseini, Shahram and Karoui, Moussa and Hameurlain, Abdelkader Modified Independent Component Analysis for Initializing Non-negative Matrix Factorization : An approach to Hyperspectral Image Unmixing. (2013) In: WHISPERS 2013 : 5th IEEE Workshop on Hyperstectral Image and Signal Processing : Evolution in Remote Sensing, 25 June 2013 - 28 June 2013 (Gainesville, United States).

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Official URL: http://dx.doi.org/10.13140/2.1.4420.6885

Abstract

In this paper, we propose an unsupervised unmixing approach for hyperspectral images, consisting of a modified version of ICA, followed by NMF. In the ideal case of a hyperspectral image combining (C−1) statistically independent source images , and a C th image which is dependent on them due to the sum-to-one constraint, our modified ICA first estimates these (C −1) sources and associated mixing coefficients, and then derives the remaining source and coefficients, while also removing the BSS scale indeterminacy. In real conditions, the above (C−1) sources may be somewhat dependent. Our modified ICA method then only yields approximate data. These are then used as the initial values of an NMF method, which refines them. Our tests show that this joint modifICA-NMF approach significantly outperforms the considered classical methods.

Item Type:Conference or Workshop Item (Paper)
Additional Information:http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6648948
HAL Id:hal-01166256
Audience (conference):National conference proceedings
Uncontrolled Keywords:
Institution:Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (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)
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Deposited By: IRIT IRIT
Deposited On:04 Jun 2015 15:11

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