Acta Optica Sinica, Volume. 41, Issue 11, 1101002(2021)

Improving Quality of Sub-Meter Satellite Image Based on Atmospheric Correction

Tao Wang1,2, Chuanjie Zhou3, Weining Yi1, jin Hong1, Nan Zhou1,2, wei Fang1, dongying Zhang1, lili Du1, Kaitao Li4, and Wenyu Cui1、*
Author Affiliations
  • 1Key Laboratory of Optical Calibration and Characterization, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui 230031, China
  • 2University of Science and Technology of China, Hefei, Anhui 230026, China
  • 3Beijing Institute of Remote Sensing Information, Beijing 100085, China
  • 4State Environmental Protection Key Laboratory of Satellite Remote Sensing, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China
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    The absorption and scattering of solar radiation by the atmosphere will reduce the brightness and contrast of satellite images. The lower the atmospheric visibility and the higher the satellite spatial resolution, the more obvious this phenomenon, so that the sub-meter spatial resolution optical satellite image under low visibility conditions looks very blurry. The adaptive atmospheric correction algorithm developed based on the radiative transfer equation fully considers the influence of the atmosphere and the surrounding environment of the target on the target radiance at the entrance pupil of the satellite, and quantitatively describes the influence of the reflectance difference between the background pixels and the target pixel on the adjacency effect. The adaptive atmospheric correction algorithm is utilized to perform atmospheric correction on sub-meter spatial resolution satellite images under low atmospheric visibility conditions, and the results are compared with processing results of conventional images. The results show that the quality of the satellite image corrected by the adaptive atmospheric correction algorithm has been significantly improved (the image sharpness increases by 4.5275 times, the image contrast increases by 44.61%, and the image information entropy value increases by 64.22%). Compared to conventional image processing methods that will bring noise and excessive enhancement when improving the quality of satellite images, the adaptive atmospheric correction algorithm will not bring noise and excessive enhancement when improving the quality of satellite images.

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    Tao Wang, Chuanjie Zhou, Weining Yi, jin Hong, Nan Zhou, wei Fang, dongying Zhang, lili Du, Kaitao Li, Wenyu Cui. Improving Quality of Sub-Meter Satellite Image Based on Atmospheric Correction[J]. Acta Optica Sinica, 2021, 41(11): 1101002

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    Paper Information

    Category: Atmospheric Optics and Oceanic Optics

    Received: Nov. 30, 2019

    Accepted: Nov. 30, 2019

    Published Online: Jun. 7, 2021

    The Author Email: Cui Wenyu (cuiwenyu@aiofm.ac.cn)

    DOI:10.3788/AOS202141.1101002

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