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Authors: Siavash Arjomand Bigdeli 1 and Matthias Zwicker 2

Affiliations: 1 University of Bern, Switzerland ; 2 University of Bern and University of Maryland, Switzerland

ISBN: 978-989-758-290-5

Keyword(s): Image Restoration, Denoising Autoencoders, Mean Shift.

Abstract: We propose to leverage denoising autoencoder networks as priors to address image restoration problems. We build on the key observation that the output of an optimal denoising autoencoder is a local mean of the true data density, and the autoencoder error (the difference between the output and input of the trained autoencoder) is a mean shift vector. We use the magnitude of this mean shift vector, that is, the distance to the local mean, as the negative log likelihood of our natural image prior. For image restoration, we maximize the likelihood using gradient descent by backpropagating the autoencoder error. A key advantage of our approach is that we do not need to train separate networks for different image restoration tasks, such as non-blind deconvolution with different kernels, or super-resolution at different magnification factors. We demonstrate state of the art results for non-blind deconvolution and super-resolution using the same autoencoding prior.

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Paper citation in several formats:
Arjomand Bigdeli S. and Zwicker M. (2018). Image Restoration using Autoencoding Priors.In Proceedings of the 13th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 5: VISAPP, ISBN 978-989-758-290-5, pages 33-44. DOI: 10.5220/0006532100330044

@conference{visapp18,
author={Siavash Arjomand Bigdeli and Matthias Zwicker},
title={Image Restoration using Autoencoding Priors},
booktitle={Proceedings of the 13th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 5: VISAPP,},
year={2018},
pages={33-44},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0006532100330044},
isbn={978-989-758-290-5},
}

TY - CONF

JO - Proceedings of the 13th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 5: VISAPP,
TI - Image Restoration using Autoencoding Priors
SN - 978-989-758-290-5
AU - Arjomand Bigdeli S.
AU - Zwicker M.
PY - 2018
SP - 33
EP - 44
DO - 10.5220/0006532100330044

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