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Pré-Publication, Document De Travail Année : 2008

Bandlet Image Estimation with Model Selection

Résumé

A new estimator is introduced to reduce white noise added to images having a geometrical regularity. This estimator projects the observations on orthogonal bandlet vectors selected in a dictionary of orthonormal bases. It is proved that the resulting risk is quasi asymptotically minimax for geometrically regular images. This paper is also a tutorial on estimation with general dictionary of orthogonal bases, through model selection. It explains how to build a thresholding estimator in a adaptively chosen ``best'' basis and gives a simple proof of its performance with the model selection approach of Barron, Birge and Massart
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Dates et versions

hal-00321965 , version 1 (17-09-2008)
hal-00321965 , version 2 (12-12-2009)

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Charles H Dossal, Erwan Le Pennec, Stéphane Mallat. Bandlet Image Estimation with Model Selection. 2008. ⟨hal-00321965v1⟩
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