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Acta Optica Sinica, Volume. 40, Issue 5, 0512002(2020)

Three-Point Light Pen Space Coordinate Measurement Based on Light Field Epipolar Plane Image Ranging

Jun Wu1,2、*, Zechuan Li1, Jianwen Zheng1, Jun Xu1, and Zhijing Yu3
Author Affiliations
  • 1College of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, China
  • 2State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China
  • 3College of Electronic Information and Automation, Civil Aviation University of China, Tianjin 300300, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (13)
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    References (17)
    Cited By (3)
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    Figures & Tables(13)
    Imaging schematic of light field camera

    Fig. 1. Imaging schematic of light field camera

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    EPI obtained by light field camera

    Fig. 2. EPI obtained by light field camera

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    Epipolar geometry

    Fig. 3. Epipolar geometry

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    Diagram of slope of diagonal line in EPI

    Fig. 4. Diagram of slope of diagonal line in EPI

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    Schematic of SPO

    Fig. 5. Schematic of SPO

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    Schematic of P3P projection

    Fig. 6. Schematic of P3P projection

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    Experiment system

    Fig. 7. Experiment system

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    Flow chart of measurement system

    Fig. 8. Flow chart of measurement system

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    SPO depth label image

    Fig. 9. SPO depth label image

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    Design image of light pen

    Fig. 10. Design image of light pen

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    • Table 1. Comparison test along the X-axis directionmm

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      Table 1. Comparison test along the X-axis directionmm

      Translation stage reference data50100150200
      Measurement valueMaximum50.345100.846150.754199.896
      Minimum49.772100.341149.924199.123
      Average50.138100.554150.534199.423
      Correct rate (compared with reprojection results)TrueTrueTrueTrue

    • Table 2. Comparison test along the Y-axis directionmm

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      Table 2. Comparison test along the Y-axis directionmm

      Translation stage reference data50100150200
      Measurement valueMaximum50.634100.565150.322200.396
      Minimum49.82499.788149.860200.044
      Average50.445100.245150.220200.254
      Correct rate (compared with reprojection results)TrueTrueTrueTrue

    • Table 3. Comparison test along the Z-axis directionmm

      View table

      Table 3. Comparison test along the Z-axis directionmm

      Translation stage reference data50100150200
      Measurement valueMaximum50.533100.523150.436200.555
      Minimum49.982100.144149.926200.021
      Average50.322100.322150.283200.321
      Correct rate (compared with reprojection results)TrueTrueTrueTrue
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    Jun Wu, Zechuan Li, Jianwen Zheng, Jun Xu, Zhijing Yu. Three-Point Light Pen Space Coordinate Measurement Based on Light Field Epipolar Plane Image Ranging[J]. Acta Optica Sinica, 2020, 40(5): 0512002

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    Paper Information

    Category: Instrumentation, Measurement and Metrology

    Received: Sep. 25, 2019

    Accepted: Nov. 9, 2019

    Published Online: Mar. 10, 2020

    The Author Email: Wu Jun (j_wu@cauc.edu.cn)

    DOI:10.3788/AOS202040.0512002

    Topics

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