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Maximum a Posteriori Video Super-Resolution Using a New Multichannel Image Prior

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3 Author(s)
Belekos, S.P. ; Dept. of Electron., Nat. & Kapodistrian Univ. of Athens, Athens, Greece ; Galatsanos, N.P. ; Katsaggelos, A.K.

Super-resolution (SR) is the term used to define the process of estimating a high-resolution (HR) image or a set of HR images from a set of low-resolution (LR) observations. In this paper we propose a class of SR algorithms based on the maximum a posteriori (MAP) framework. These algorithms utilize a new multichannel image prior model, along with the state-of-the-art single channel image prior and observation models. A hierarchical (two-level) Gaussian nonstationary version of the multichannel prior is also defined and utilized within the same framework. Numerical experiments comparing the proposed algorithms among themselves and with other algorithms in the literature, demonstrate the advantages of the adopted multichannel approach.

Published in:

Image Processing, IEEE Transactions on  (Volume:19 ,  Issue: 6 )

Date of Publication:

June 2010

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