Título:
A bayesian hyperprior approach for joint image denoising and interpolation, with an application to HDR imaging
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Autor:
Aguerrebere, Cecilia
Almansa, Andrés
Delon, Julie
Gousseau, Yann
Musé, Pablo
Almansa, Andrés
Delon, Julie
Gousseau, Yann
Musé, Pablo
Tutor:
Tipo de documento:
Preprint
Editor:
Palabras clave:
Non-local patch-based restoration
Bayesian restoration
Maximum a posteriori
Gaussian Mixture Models
Hyper-prior
Conjugate distributions
High dynamic range imaging
Single shot HDR
Hierarchical models
Bayesian restoration
Maximum a posteriori
Gaussian Mixture Models
Hyper-prior
Conjugate distributions
High dynamic range imaging
Single shot HDR
Hierarchical models
Descriptores:
Procesamiento de Señales
Año de publicación:
2017
Contenido:
Resumen:
Recently, impressive denoising results have been achieved by Bayesian approaches which assume Gaussian models for the image patches. This improvement in performance can be attributed to the use of per-patch models. Unfortunately such an approach is particularly unstable for most inverse problems beyond denoising. In this work, we propose the use of a hyperprior to model image patches, in order to stabilize the estimation procedure. There are two main advantages to the proposed restoration scheme: Firstly it is adapted to diagonal degradation matrices, and in particular to missing data problems (e.g. inpainting of missing pixels or zooming). Secondly it can deal with signal dependent noise models, particularly suited to digital cameras. As such, the scheme is especially adapted to computational photography. In order to illustrate this point, we provide an application to high dynamic range imaging from a single image taken with a modified sensor, which shows the effectiveness of the proposed scheme
Descripción:
Publicado en IEEE Transactions on Computational Imaging, v.3, no. 4, 2017
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Citación:
Aguerrebere, C, Almansa, A, Delon, J, Gousseau, Y, Musé, P. "A Bayesian Hyperprior Approach for Joint Image Denoising and Interpolation, With an Application to HDR Imaging" [Preprint] Publicado en: IEEE Transactions on Computational Imaging, v. 3, no. 4, pp. 633-646, 2017, doi: 10.1109/TCI.2017.2704439
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https://hdl.handle.net/20.500.12008/43490
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Licencia Creative Commons Atribución - No Comercial - Sin Derivadas (CC - By-NC-ND 4.0)
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| Ficheros | Descripción | Tamaño | Formato | ||
|---|---|---|---|---|---|
| AADGM17.pdf | — | 9.48 MB | Adobe PDF |