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Unmixing of Hyperspectral Images using Bayesian Nonnegative Matrix Factorization with Volume Prior
[PhD] | arngren.com
Ph.D. Student Morten Arngren
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Unmixing of Hyperspectral Images using Bayesian Nonnegative Matrix Factorization with Volume Prior

Morten Arngren, Mikkel N. Schmidt and Jan Larsen

Abstract: Hyperspectral imaging can be used in assessing the quality of foods by decomposing the image into constituents such as protein, starch, and water. Observed data can be considered a mixture of underlying characteristic spectra (endmembers), and estimating the constituents and their abundances requires efficient algorithms for spectral unmixing. We present a Bayesian spectral unmixing algorithm employing a volume constraint and propose an inference procedure based on Gibbs sampling. We evaluate the method on synthetic and real hyperspectral data of wheat kernels. Results show that our method perform as good or better than existing volume constrained methods. Further, our method gives credible intervals for the endmembers and abundances, which allows us to asses the confidence of the results.

Keywords: Bayesian source separation, Hyperspectral image analysis, Volume regularization, Gibbs sampling


Cite
Morten Arngren, Mikkel N. Schmidt and Jan Larsen
, Unmixing of Hyperspectral Images using Bayesian Nonnegative Matrix Factorization with Volume Prior, Journal of Signal Processing Systems, 2010

Bibtex
@inproceedings{arngren10_mlsp,
title        = "
Unmixing of Hyperspectral Images using Bayesian Nonnegative Matrix Factorization with Volume Prior",
author    = "Morten Arngren and Mikkel N. Schmidt and Jan larsen",
booktitle = "
Journal of Signal Processing Systems",
month    = "Jan",
year       = "2010"
}