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A Comparison of Nonlinear Mixing Models for Vegetated Areas Using Simulated and Real Hyperspectral Data

Dobigeon, Nicolas and Tits, Laurent and Somers, Ben and Altmann, Yoann and Coppin, Pol A Comparison of Nonlinear Mixing Models for Vegetated Areas Using Simulated and Real Hyperspectral Data. (2014) IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 7 (6). 1869-1878. ISSN 1939-1404

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Official URL: http://dx.doi.org/10.1109/JSTARS.2014.2328872

Abstract

Abstract—Spectral unmixing (SU) is a crucial processing step when analyzing hyperspectral data. In such analysis, most of the work in the literature relies on the widely acknowledged linear mixing model to describe the observed pixels. Unfortunately, this model has been shown to be of limited interest for specific scenes, in particular when acquired over vegetated areas. Consequently, in the past few years, several nonlinear mixing models have been introduced to take nonlinear effects into account while performing SU. These models have been proposed empirically, however, without any thorough validation. In this paper, the authors take advantage of two sets of real and physical-based simulated data to validate the accuracy of various nonlinear models in vegetated areas. These physics-based models, and their corresponding unmixing algorithms, are evaluated with respect to their ability of fitting the measured spectra and providing an accurate estimation of the abundance coefficients, considered as the spatial distribution of the materials in each pixel.

Item Type:Article
Additional Information:Thanks to IEEE editor. The original PDF of the article can be found at IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing website : http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?reload=true&punumber=4609443
HAL Id:hal-01056556
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)
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 > Katholieke Universiteit Leuven - KU LEUVEN (BELGIUM)
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Deposited By: Nicolas DOBIGEON
Deposited On:20 Aug 2014 09:09

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