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Chinese Optics Letters, Volume. 21, Issue 10, 101102(2023)

Enhanced imaging through turbid water based on quadrature lock-in discrimination and retinex aided by adaptive gamma function for illumination correction

Riffat Tehseen1, Amjad Ali1, Mithilesh Mane1, Wenmin Ge1, Yanlong Li1, Zejun Zhang1,2,3, and Jing Xu1,2,3、*
Author Affiliations
  • 1Optical Communication Laboratory, Ocean College, Zhejiang University, Zhoushan 316021, China
  • 2Hainan Institute of Zhejiang University, Sanya 572000, China
  • 3Key Laboratory of Ocean Observation-Imaging Testbed of Zhejiang Province, Ocean College, Zhejiang University, Zhoushan 316021, China
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    Figures&Tables (7)
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    References (30)
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    Figures & Tables(7)
    Flowchart of the proposed method.

    Fig. 1. Flowchart of the proposed method.

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    Experimental setup.

    Fig. 2. Experimental setup.

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    Comparison results for the images captured in low-turbidity (first row) and high-turbidity (second row) and their zoomed-in views (of high-turbidity in the third row) of different methods using the rubber toy as a target object.

    Fig. 3. Comparison results for the images captured in low-turbidity (first row) and high-turbidity (second row) and their zoomed-in views (of high-turbidity in the third row) of different methods using the rubber toy as a target object.

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    Intensity profiles at colored dashed lines in the zoomed-in view of Fig. 3.

    Fig. 4. Intensity profiles at colored dashed lines in the zoomed-in view of Fig. 3.

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    Comparison results for the images captured in low-turbidity (first row) and high-turbidity (second row) and their zoomed-in views (of high-turbidity in the third row) of different methods using the Rubik’s cube as a target object.

    Fig. 5. Comparison results for the images captured in low-turbidity (first row) and high-turbidity (second row) and their zoomed-in views (of high-turbidity in the third row) of different methods using the Rubik’s cube as a target object.

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    Comparison results for different modulation indexes in a high-turbidity environment.

    Fig. 6. Comparison results for different modulation indexes in a high-turbidity environment.

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    • Table 1. Quantitative Comparison of Zoomed-in View of Fig. 5

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      Table 1. Quantitative Comparison of Zoomed-in View of Fig. 5

       EntropyAGSTDPSNR (dB)BRISQUENIQEEME
      Intensity image6.693.35 × 10−20.10511.9740.1219.493.86
      QLD6.821.7 × 10−30.12411.0343.2112.340.47
      CLAHE5.9971.6 × 10−20.07212.8435.18211.72.79
      DCP7.111.5 × 10−20.1738.12835.95611.874.877
      MSR7.351.05 × 10−10.19414.4942.30114.3918.95
      DehazeNet7.517.5 × 10−30.19910.31623.5949.6171.952
      Ours7.176.51 × 10−20.2616.9333.284.7986.49
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    Riffat Tehseen, Amjad Ali, Mithilesh Mane, Wenmin Ge, Yanlong Li, Zejun Zhang, Jing Xu, "Enhanced imaging through turbid water based on quadrature lock-in discrimination and retinex aided by adaptive gamma function for illumination correction," Chin. Opt. Lett. 21, 101102 (2023)

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    Paper Information

    Category: Imaging Systems and Image Processing

    Received: Mar. 5, 2023

    Accepted: Jun. 9, 2023

    Posted: Jun. 9, 2023

    Published Online: Oct. 11, 2023

    The Author Email: Jing Xu (jxu-optics@zju.edu.cn)

    DOI:10.3788/COL202321.101102

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology