| HAL : hal-00433888, version 1 |
| arXiv : 0911.4097 |
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| Convergence and performances of the peeling wavelet denoising algorithm |
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| Céline Lacaux 1Aurélie Muller 1 |
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| (20/11/2009) |
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| This note is devoted to an analysis of the so-called peeling algorithm in wavelet denoising. Assuming that the wavelet coefficients of the signal can be modeled by generalized Gaussian random variables, we compute a critical thresholding constant for the algorithm, which depends on the shape parameter of the generalized Gaussian distribution. We also quantify the optimal number of steps which have to be performed, and analyze the convergence of the algorithm. Several versions of the obtained algorithm were implemented and tested against classical wavelet denoising procedures on benchmark and simulated biological signals. |
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| 1 : | Institut Elie Cartan Nancy (IECN) |
| CNRS : UMR7502 – INRIA – Université Henri Poincaré - Nancy I – Université Nancy II – Institut National Polytechnique de Lorraine | |
| 2 : | Centre de recherche en automatique de Nancy (CRAN) |
| CNRS : UMR7039 – Université Henri Poincaré - Nancy I – Institut National Polytechnique de Lorraine - INPL | |
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| Domaine | : | Mathématiques/Statistiques Statistiques/Théorie |
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| Wavelets – denoising – peeling algorithm – empirical processes – generalized Gaussian distribution |
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| Liste des fichiers attachés à ce document : | ||||||||||
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| hal-00433888, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00433888/fr/ | |
| oai:hal.archives-ouvertes.fr:hal-00433888_v1 | |
| Contributeur : Samy Tindel | |
| Soumis le : Vendredi 20 Novembre 2009, 14:14:53 | |
| Dernière modification le : Vendredi 20 Novembre 2009, 19:41:17 | |