Deep Learning-based galaxy image deconvolution
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Author(s)
Akhaury, Utsav
Starck, Jean-Luc
Jablonka, Pascale
Courbin, Frédéric
Michalewicz, Kevin
Type
Journal Article
Abstract
With the onset of large-scale astronomical surveys capturing millions of images, there is an increasing need to develop fast and accurate deconvolution algorithms that generalize well to different images. A powerful and accessible deconvolution method would allow for the reconstruction of a cleaner estimation of the sky. The deconvolved images would be helpful to perform photometric measurements to help make progress in the fields of galaxy formation and evolution. We propose a new deconvolution method based on the Learnlet transform. Eventually, we investigate and compare the performance of different Unet architectures and Learnlet for image deconvolution in the astrophysical domain by following a two-step approach: a Tikhonov deconvolution with a closed-form solution, followed by post-processing with a neural network. To generate our training dataset, we extract HST cutouts from the CANDELS survey in the F606W filter (V-band) and corrupt these images to simulate their blurred-noisy versions. Our numerical results based on these simulations show a detailed comparison between the considered methods for different noise levels.
Editor(s)
Fraix-Burnet, Didier
Date Issued
2022-11-18
Date Acceptance
2022-10-31
Citation
Frontiers in Astronomy and Space Sciences, 2022, 9
ISSN
2296-987X
Publisher
Frontiers Media
Journal / Book Title
Frontiers in Astronomy and Space Sciences
Volume
9
Copyright Statement
© 2022 Akhaury, Starck, Jablonka, Courbin and Michalewicz. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
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Subjects
astro-ph.IM
astro-ph.IM
eess.IV
Publication Status
Published
Article Number
ARTN 1001043