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Communication Dans Un Congrès Année : 2012

Actual limits of non-local methods in using image self-similarity

Résumé

Recently, significant progress has been made in different image processing tasks by introducing non-local operators that claim to exploit self-similarity properties of natural images. We give several examples of such image processing tasks and we then focus on the image denoising problem and especially on the well known non-local means algorithm. We show that, at least in the case of this algorithm, the so-called non-local operator remains essentially a local one. We present some arguments to explain this behavior and we conclude that a true non-local operator able to exploit image self-similarity remains to be invented.
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Dates et versions

hal-00906194 , version 1 (19-11-2013)

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  • HAL Id : hal-00906194 , version 1

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Jacques Froment. Actual limits of non-local methods in using image self-similarity. Champs aléatoires : des modèles aux applications, Sep 2012, Ile de Berder, France. ⟨hal-00906194⟩
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