Cited by 246Advanced Image Processing TechniquesImage and Signal Denoising MethodsGenerative Adversarial Networks and Image Synthesis

Generative adversarial networks recover features in astrophysical images of galaxies beyond the deconvolution limit

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Schawinski, Kevin, Zhang, Ce, Zhang, Hantian, Fowler, Lucas, Santhanam, Gokula Krishnan·2017·Monthly Notices of the Royal Astronomical Society: Letters

Abstract

Observations of astrophysical objects such as galaxies are limited by various sources of random and systematic noise from the sky background, the optical system of the telescope and the detector used to record the data. Conventional deconvolution techniques are limited in their ability to recover features in imaging data by the Shannon–Nyquist sampling theorem. Here, we train a generative adversarial network (GAN) on a sample of 4550 images of nearby galaxies at 0.01 < z < 0.02 from the Sloan Digital Sky Survey and conduct 10× cross-validation to evaluate the results. We present a method using a GAN trained on galaxy images that can recover features from artificially degraded images with worse seeing and higher noise than the original with a performance that far exceeds simple deconvolution. The ability to better recover detailed features such as galaxy morphology from low signal to noise and low angular resolution imaging data significantly increases our ability to study existing data sets of astrophysical objects as well as future observations with observatories such as the Large Synoptic Sky Telescope (LSST) and the Hubble and James Webb space telescopes.

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  • Schawinski et al. (2017) showed that GANs can recover features even after degradation, but this remains a simple experiment since galaxies were previously degraded.

    “They show that GANs can recover features even after degradation. This remains however a simple experiment since galaxies were previously degraded.”

    From The Dawes Review 10: The impact of deep learning for the analysis of galaxy surveys (2023) · cites this paper as Schawinski et al. (2017)

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Research works printed but not linked: 6

  1. Courbin F., 1999, PhD thesis, Universite de Liege
  2. Goodfellow I., Pouget-Abadie J., Mirza M., Xu B., Warde-Farley D., Ozair S., Courville A., Bengio Y., 2014, Generative Adversarial Nets, NIPS, 2672
  3. Nyquist H., 1928, Trans. Am. Inst. Electrical Engineers, 47, 617
  4. Shannon C. E., 1949, Proc. IRE, 37, 10
  5. Sola J., Sevilla J., 1997, IEEE Trans. Nucl. Sci., 44, 1464
  6. Xu L., Ren J. S., Liu C., Jia J., 2014, Deep Convolutional Neural Network for Image Deconvolution. Advances in Neural Information Processing Systems (NIPS), 1790 York D. G. et al., 2000, AJ, 120, 1579

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Authors
Schawinski, K., Zhang, C., Zhang, H., Fowler, L., & Santhanam, G. K.
Affiliations
ETH Zurich (CH)
Corresponding author
  • Schawinski, Kevin
  • Zhang, Ce
Venue
Monthly Notices of the Royal Astronomical Society: Letters
Published
2017-01-20
Volume
467
Issue
1
Pages
L110-L114
ISSN
  • 1745-3925 (ISSN-L)
  • 1745-3933
OpenAlex
W2572438701
Cited by
246
References
18
Citations by year
2026: 12 · 2025: 23 · 2024: 19 · 2023: 22 · 2022: 35 · 2021: 36 · 2020: 34 · 2019: 30 · 2018: 25 · 2017: 9 · 2016: 1
FWCI
11.13
Type
journal article
Language
en
Open access
Locations
  • Monthly Notices of the Royal Astronomical Society Letters (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • Repository for Publications and Research Data (ETH Zurich) (submittedVersion, other-oa)
  • arXiv (Cornell University)
  • ETH Zürich Research Collection
Funders
National Science Foundation (PP00P2_138979, PP00P2_166159)
Topics
  • Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Advanced Image Processing Techniques
  • Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Image and Signal Denoising Methods
  • Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Generative Adversarial Networks and Image Synthesis
Keywords
generative adversarial networks, deconvolution, feature recovery, galaxy morphology, Hubble Space Telescope, James Webb Space Telescope, Sloan Digital Sky Survey

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