TY - GEN
T1 - Bayesian reconstruction of hyperspectral images by using compressed sensing measurements and a local structured prior
AU - Mejia, Yuri
AU - Arguello, Henry
AU - Costa, Facundo
AU - Tourneret, Jean-Yves
AU - Batatia, Hadj
PY - 2017/6/19
Y1 - 2017/6/19
N2 - This paper introduces a hierarchical Bayesian model for the reconstruction of hyperspectral images using compressed sensing measurements. This model exploits known properties of natural images, promoting the recovered image to be sparse on a selected basis and smooth in the image domain. The posterior distribution of this model is too complex to derive closed form expressions for the estimators of its parameters. Therefore, an MCMC method is investigated to sample this posterior distribution. The resulting samples are used to estimate the unknown model parameters and hyperparameters in an unsupervised framework. The results obtained on real data illustrate the improvement in reconstruction quality when compared to some existing techniques.
AB - This paper introduces a hierarchical Bayesian model for the reconstruction of hyperspectral images using compressed sensing measurements. This model exploits known properties of natural images, promoting the recovered image to be sparse on a selected basis and smooth in the image domain. The posterior distribution of this model is too complex to derive closed form expressions for the estimators of its parameters. Therefore, an MCMC method is investigated to sample this posterior distribution. The resulting samples are used to estimate the unknown model parameters and hyperparameters in an unsupervised framework. The results obtained on real data illustrate the improvement in reconstruction quality when compared to some existing techniques.
KW - Bayesian reconstruction
KW - compressive sampling
KW - Spectral imaging
UR - http://www.scopus.com/inward/record.url?scp=85023769815&partnerID=8YFLogxK
U2 - 10.1109/ICASSP.2017.7952730
DO - 10.1109/ICASSP.2017.7952730
M3 - Conference contribution
AN - SCOPUS:85023769815
T3 - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
SP - 3116
EP - 3120
BT - 2017 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
PB - IEEE
T2 - 42nd IEEE International Conference on Acoustics, Speech, and Signal Processing 2017
Y2 - 5 March 2017 through 9 March 2017
ER -