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Image deblurring, spectrum interpolation and application to satellite imaging

Published online by Cambridge University Press:  15 August 2002

Sylvain Durand ,
François Malgouyres  and
Bernard Rougé
Sylvain Durand
Affiliation:
CMLA, ENS Cachan, 61 avenue du président Wilson, 94235 Cachan Cedex, France; [email protected]. & [email protected]. LAMFA, Université de Picardie Jules Verne, 33 rue Saint Leu, 80039 Amiens Cedex 1, France.
François Malgouyres
Affiliation:
CMLA, ENS Cachan, 61 avenue du président Wilson, 94235 Cachan Cedex, France; [email protected]. & [email protected].
Bernard Rougé
Affiliation:
CNES, DGAT/SH/QTIS, 18 avenue E. Belin, 31401 Toulouse Cedex 4, France; [email protected].
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Abstract

This paper deals with two complementary methods in noisy image deblurring: a nonlinear shrinkage of wavelet-packets coefficients called FCNR and Rudin-Osher-Fatemi's variational method. The FCNR has for objective to obtain a restored image with a white noise. It will prove to be very efficient to restore an image after an invertible blur but limited in the opposite situation. Whereas the Total Variation based method, with its ability to reconstruct the lost frequencies by interpolation, is very well adapted to non-invertible blur, but that it tends to erase low contrast textures. This complementarity is highlighted when the methods are applied to the restoration of satellite SPOT images.

Keywords

Image restorationdeblurringwavelet-packetsTotal Variationspectrum interpolation.
Type
Research Article
Information
ESAIM: Control, Optimisation and Calculus of Variations , Volume 5 , 2000 , pp. 445 - 475
Copyright
© EDP Sciences, SMAI, 2000

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