Unmixing of Hyperspectral Image using Bayesian Nonnegative Matrix Factorization with Volume Prior

Morten Arngren, Mikkel N. Schmidt, Jan Larsen

AbstractHyperspectral 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.
KeywordsBayesian source separation, Hyperspectral image analysis, Volume regularization, Gibbs sampling
TypeJournal paper [With referee]
JournalJournal of Signal Processing Systems
EditorsChristian Jutten, Jocelyn Chanussot
Year2011    Month November    Vol. 65    No. 3    pp. 479-496
ISBN / ISSNDOI: 10.1007/s11265-010-0533-2
NoteMATLAB software toolbox available at: http://www.imm.dtu.dk/pubdb/p.php?5834 and supplementary techn. report at http://www.imm.dtu.dk/pubdb/p.php?5836
Electronic version(s)[pdf]
Publication linkhttp://www.springerlink.com/content/f187n757l49353k3/
BibTeX data [bibtex]
IMM Group(s)Intelligent Signal Processing

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