Laser & Optoelectronics Progress, Volume. 59, Issue 22, 2201001(2022)

Rapid Restoration of Turbulent Degraded Images Based on Bidirectional Multi-Scale Feature Fusion

Yiming Guo1,2,3, Xiaoqing Wu1,3、*, Changdong Su1,2,3, Shitai Zhang1,2,3, Cuicui Bi1,2,3, and Zhiwei Tao1,2
Author Affiliations
  • 1Key Laboratory of Atmospheric Optics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, Anhui, China
  • 2University of Science and Technology of China, Hefei 230026, Anhui, China
  • 3Advanced Laser Technology Laboratory of Anhui Province, Hefei 230037, Anhui, China
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    This study proposes a generative adversarial network (GAN) based on bidirectional multi-scale feature fusion to reconstruct target celestial images captured by various ground-based telescopes, which are influenced by atmospheric turbulence. This approach first constructs a dataset for network training by convolving a long-exposure atmospheric turbulence degradation model with clear images and then validates the network's performance on a simulated turbulence image dataset. Furthermore, images of the International Space Station collected by the Munin ground-based telescope (Cassegrain-type telescope) that were influenced by atmospheric turbulence are included in this study. These images were sent to the proposed neural network model for testing. Different image restoration assessment shows that the proposed network has a good real-time performance and can produce restoration results within 0.5 s, which is more than 10 times faster than standard nonneural network restoration approaches; the peak signal to noise ratio (PSNR) is improved by 2 dB?3 dB, and structural similarity (SSIM) is enhanced by 9.3%. Simultaneously, the proposed network has a pretty good restoration impact on degraded images that are influenced by real turbulence.

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    Yiming Guo, Xiaoqing Wu, Changdong Su, Shitai Zhang, Cuicui Bi, Zhiwei Tao. Rapid Restoration of Turbulent Degraded Images Based on Bidirectional Multi-Scale Feature Fusion[J]. Laser & Optoelectronics Progress, 2022, 59(22): 2201001

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    Paper Information

    Category: Atmospheric Optics and Oceanic Optics

    Received: Sep. 9, 2021

    Accepted: Sep. 27, 2021

    Published Online: Sep. 19, 2022

    The Author Email: Wu Xiaoqing (xqwu@aiofm.ac.cn)

    DOI:10.3788/LOP202259.2201001

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