Infrared and Laser Engineering, Volume. 50, Issue 3, 20200215(2021)

Research on extracting water weak texture based on optical filtering

Xiangxiang Zhang1,2, Yutian Fu1, and Yonghe Chen1
Author Affiliations
  • 1Key Laboratory of Infrared System Detection and Imaging Technology, Shanghai Institute of Technology and Physics, Chinese Academy of Sciences, Shanghai 200083, China
  • 2University of Chinese Academy of Sciences, Beijing 100049, China
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    Figures & Tables(16)
    Single-aperture and its MTF
    Double-aperture and its MTF
    MTF comparison between double-aperture and single-aperture
    Factors impacting SCR
    MTF comparison for signal and clutter in double aperture and single aperture
    Ideal model comparison of double aperture and single aperture
    Kelvin wake and weak texture signal image simulation
    Optical layout
    Comparison of signal and clutter in MTF of double aperture and single aperture
    Experiment setup
    Double aperture diaphragm, single aperture diaphragm and resolution target
    Imaging effect comparison between double aperture and single aperture
    • Table 1. [in Chinese]

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      View in Article

      Table 1. [in Chinese]

      ItemSingle apertureDouble apertureSCR enhancement
      SCR/dB−44.6−34.2+23.3%
    • Table 2. [in Chinese]

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      View in Article

      Table 2. [in Chinese]

      ItemSingle apertureDouble aperture
      Imaging
      Aperture function
      Non-interference MTF
      Digital contrast enhancement
    • Table 3. [in Chinese]

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      View in Article

      Table 3. [in Chinese]

      ItemParameter of optical systemSpecification
      1Numeric aperture0.1
      2Focal length/mm153
      3Object distance/mm6 000
      4Magnification0.03
      5Camera parameterSensor size 1/3 in Pixel size 1.67 μm
    • Table 4. [in Chinese]

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      View in Article

      Table 4. [in Chinese]

      Type of apertureSingle apertureDouble aperture
      Imaging
      SCR enhancment-+11.2%
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    Xiangxiang Zhang, Yutian Fu, Yonghe Chen. Research on extracting water weak texture based on optical filtering[J]. Infrared and Laser Engineering, 2021, 50(3): 20200215

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    Paper Information

    Category: Photoelectric measurement

    Received: Nov. 15, 2020

    Accepted: --

    Published Online: Jul. 15, 2021

    The Author Email:

    DOI:10.3788/IRLA20200215

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