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Nonlinear unmixing of vegetated areas: a model comparison based on simulated and real hyperspectral data

Dobigeon, Nicolas and Tits, Laurent and Somers, Ben and Altmann, Yoann and Coppin, Pol Nonlinear unmixing of vegetated areas: a model comparison based on simulated and real hyperspectral data. (2014) In: IEEE Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing - WHISPERS 2014, 24 June 2014 - 27 June 2014 (Lausanne, Switzerland).

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Abstract

When analyzing remote sensing hyperspectral images, numerous works dealing with spectral unmixing assume the pixels result from linear combinations of the endmember signatures. However, this assumption cannot be fulfilled, in particular when considering images acquired over vegetated areas. As a consequence, several nonlinear mixing models have been recently derived to take various nonlinear effects into account when unmixing hyperspectral data. Unfortunately, these models have been empirically proposed and without thorough validation. This paper attempts to fill this gap by taking advantage of two sets of real and physical-based simulated data. The accuracy of various linear and nonlinear models and the corresponding unmixing algorithms is evaluated with respect to their ability of fitting the sensed pixels and of providing accurate estimates of the abundances.

Item Type:Conference or Workshop Item (Paper)
HAL Id:hal-01136112
Audience (conference):International conference proceedings
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 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 > Heriot-Watt University (UNITED KINGDOM)
Other partners > Katholieke Universiteit Leuven - KU LEUVEN (BELGIUM)
Laboratory name:
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Deposited By: IRIT IRIT
Deposited On:26 Mar 2015 14:52

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