Shift-invariant multichannel blind restoration

0411162 - UTIA-B 20030149 RIV IT eng C - Conference Paper (international conference)
Šroubek, Filip - Flusser, Jan
Shift-invariant multichannel blind restoration.
Rome: University of ROMA TRE, 2003. ISBN 953-184-061-X. In: Proceedings of the 3rd International Symposium on Image and Signal Processing and Analysis. - (Lončaric, S.; Neri, A.; Babic, H.), s. 332-337
[ISPA 2003 /3./. Rome (IT), 18.09.2003-20.09.2003]
R&D Projects: GA ČR GA102/00/1711; GA ČR GA201/03/0675
Institutional research plan: CEZ:AV0Z1075907
Keywords : multichannel blind deconvolution * total variation * MAP estimation
Subject RIV: BD - Theory of Information
http://library.utia.cas.cz/prace/20030149.pdf

Existing multichannel blind restoration techniques are prone to noise, assume perfect spatial alignment of channels and a correct estimation of blur size. We develop an alternating minimization scheme based on maximum a posteriori probability estimation with a priori distributions derived from the multichannel framework and from the variational priciple. We observe that the exact knowledge of the blur size is not necessary and that translation misregistration can be automatically removed.
Permanent Link: http://hdl.handle.net/11104/0131248