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Optical Instruments, Volume. 44, Issue 4, 26(2022)

Image quality enhancement method for capsule endoscope system

Xingqi WANG and Bo YANG*
Author Affiliations
  • School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (9)
    Equations (10)
    References (12)
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    Figures & Tables(9)
    Optical system structure diagram

    Fig. 1. Optical system structure diagram

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    MTF diagram of the optical system

    Fig. 2. MTF diagram of the optical system

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    Tolerance performance

    Fig. 3. Tolerance performance

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    Noise introduced at each stage

    Fig. 4. Noise introduced at each stage

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    The structure of the U-net

    Fig. 5. The structure of the U-net

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    Original image and processed image

    Fig. 6. Original image and processed image

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    • Table 1. Design parameters of the optical system

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      Table 1. Design parameters of the optical system

      参数数值
      波长/nm656，587，486
      F#3
      全视场/(°)160
      总长/mm＜5
      有效焦距/mm0.9
      MTF(@140 lp/mm)＞0.3

    • Table 2. Table of the tolerance parameters

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      Table 2. Table of the tolerance parameters

      公差指标
      曲率半径/光圈1
      厚度/mm0.01
      表面偏心/mm0.005
      表面倾斜/rad0.001
      表面不规则度0.5
      元件偏心/mm0.005
      元件倾斜/rad0.001
      折射率0.001
      阿贝数0.8%

    • Table 3. Noise model parameter table

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      Table 3. Noise model parameter table

      参数数值
      K7.29
      Λ−0.26
      μc0
      σTL1.03
      σr1.4
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    Xingqi WANG, Bo YANG. Image quality enhancement method for capsule endoscope system[J]. Optical Instruments, 2022, 44(4): 26

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    Paper Information

    Category: APPLICATION TECHNOLOGY

    Received: Feb. 21, 2022

    Accepted: Mar. 17, 2022

    Published Online: Oct. 19, 2022

    The Author Email: Bo YANG (504534891@qq.com)

    DOI:10.3969/j.issn.1005-5630.2022.004.004

    Topics

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