Optics and Precision Engineering, Volume. 31, Issue 12, 1793(2023)

Binocular vision measurement method incorporating one-dimensional probabilistic Hough transform and local Zernike moment

Hao ZHANG... Sixiang XU*, Chenchen DONG and Shuhua ZHOU |Show fewer author(s)
Author Affiliations
  • College of Mechanical Engineering, Anhui University of Technology, Ma'anshan243032, China
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    Figures & Tables(15)
    Measurement process of continuous casting slab model
    Schematic diagram of line detection
    Schematic diagram of subpixel point extraction and sifting
    Stereo rectification effect
    Line detection of continuous casting slab model image
    Comparison of subpixel points sifting
    Subpixel edge points
    Subpixel edge lines and intersection points
    3D localization of continuous casting slab model
    Feature point matching
    • Table 1. Calibration result of binocular system

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      Table 1. Calibration result of binocular system

      Intrinsic parametersExtrinsic parameters
      Left cameraRight cameraRotation matrix RTranslation matrix T
      2179.7-0.858 56930.0502 177.9615.660012 169.00.504 31862.9102 166.6540.570010.999 8-0.002 70.033 40.002 71.000 00.006 9-0.033 4-0.006 90.999 8-100.026 00.335 7-12.580 5
    • Table 2. Performance comparison of line detection algorithms

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      Table 2. Performance comparison of line detection algorithms

      AlgorithmLinesTime/ms
      PPHT9496
      LSD9237
      EDLines7186
      Literature [176215
      Ours6231
    • Table 3. Key point coordinates

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      Table 3. Key point coordinates

      PointPixel coordinates in the left image /pixelPixel coordinates in the right image /pixel3D Coordinates in the world coordinate system /mm
      A(717.612 8, 601.743 8)(559.356 6, 602.186 5)(-52.072 9, 1.242 1, 1 377.660 5)
      B(1 066.879 6, 683.051 1)(887.547 1, 683.517 1)(148.857 0, 46.453 2, 1 215.748 3)
      C(1 057.525 9, 857.635 7)(873.184 3, 857.963 8)(139.736 7, 139.885 3, 1 182.713 2)
      D(971.936 0, 888.752 2)(777.791 7, 889.220 2)(88.583 9, 148.889 9, 1 122.995 8)
      E(622.165 6, 785.163 5)(453.692 2, 785.872 3)(-105.583 9, 110.145 7, 1 294.111 4)
      F(626.050 4, 621.140 0)(460.914 7, 621.699 6)(-105.364 8, 12.974 4, 1 320.267 5)
    • Table 4. Measurement results of slab model

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      Table 4. Measurement results of slab model

      EdgeMeasured value/mm

      True value

      /mm

      Absolute error/mmRelative error/%
      AB261.978 0262.872-0.894 0-0.340 1
      BC99.519 1100.136-0.616 9-0.616 1
      CD79.144 579.864-0.719 5-0.900 9
      DE261.692 2262.872-1.179 8-0.448 8
      EF100.630 2100.1360.494 20.493 6
      FA79.193 679.864-0.670 4-0.839 4
    • Table 5. Comparison of measurement accuracy and time

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      Table 5. Comparison of measurement accuracy and time

      AlgorithmMeasured length/mmTrue length/mmRelative error/%Time/ms
      SIFT257.684 3262.872-1.973 53 908
      ORB258.785 4262.872-1.554 6434
      Literature [6264.445 7262.8720.598 71 482
      Ours261.835 0262.872-0.394 5903
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    Hao ZHANG, Sixiang XU, Chenchen DONG, Shuhua ZHOU. Binocular vision measurement method incorporating one-dimensional probabilistic Hough transform and local Zernike moment[J]. Optics and Precision Engineering, 2023, 31(12): 1793

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    Paper Information

    Category: Information Sciences

    Received: Oct. 15, 2022

    Accepted: --

    Published Online: Jul. 25, 2023

    The Author Email: XU Sixiang (xsxhust@ahut.edu.cn)

    DOI:10.37188/OPE.20233112.1793

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