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Sharpening Hyperspectral Images Using Spatial and Spectral Priors in a Plug-and-Play Algorithm

Teodoro, A. M. ; Bioucas-Dias, J. ; Figueiredo, M. A. T.

Sharpening Hyperspectral Images Using Spatial and Spectral Priors in a Plug-and-Play Algorithm, Proc Energy Minimization Methods in Computer Vision and Pattern Recognition, Venice, Italy, Vol. , pp. - , October, 2017.

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Abstract
This paper proposes using both spatial and spectral regularizers/priors for hyperspectral image sharpening. Leveraging the recent plug-and-play framework, we plug two Gaussian-mixture-based denoisers, into the iterations of an alternating direction method of multipliers (ADMM): a spatial regularizer learned from the observed multispectral image, and a spectral regularizer trained using the hyperspectral data. The proposed approach achieves very competitive results, improving the performance over using a single regularizer. Furthermore, the spectral regularizer can be used to classify the image pixels, opening the door to class-adapted models.