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Laser & Optoelectronics Progress, Volume. 55, Issue 11, 111203(2018)

Camera Calibration Based on Phase Target

Jin Yu, Chao Chen, Nan Gao*, and Zonghua Zhang
Author Affiliations
  • School of Mechanical Engineering, Hebei University of Technology, Tianjin 300130, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (8)
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    References (21)
    Cited By (9)
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    Figures & Tables(8)
    Schematic of relationship among coordinate systems

    Fig. 1. Schematic of relationship among coordinate systems

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    Phase target pattern displayed on LCD

    Fig. 2. Phase target pattern displayed on LCD

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    Wrapped phase maps. (a) Horizontally wrapped phase map; (b) vertically wrapped phase map

    Fig. 3. Wrapped phase maps. (a) Horizontally wrapped phase map; (b) vertically wrapped phase map

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    Unwrapped phase maps. (a) Horizontally unwrapped phase map; (b) vertically unwrapped phase map

    Fig. 4. Unwrapped phase maps. (a) Horizontally unwrapped phase map; (b) vertically unwrapped phase map

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    Mapping relationship between world coordinate of phase points and coordinate of camera pixel

    Fig. 5. Mapping relationship between world coordinate of phase points and coordinate of camera pixel

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    Phase error versus Gamma value

    Fig. 6. Phase error versus Gamma value

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    Intrinsic parameter calibration re-projection errors of three methods. (a) Checkerboard method; (b) Ma's method; (c) proposed method here

    Fig. 7. Intrinsic parameter calibration re-projection errors of three methods. (a) Checkerboard method; (b) Ma's method; (c) proposed method here

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    • Table 1. Intrinsic parameter calibration results of camera

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      Table 1. Intrinsic parameter calibration results of camera

      Calibrationpatternfx /pixelfy /pixelu0 /pixelv0 /pixelRe-projectionerror /pixelRequired number ofpatterns
      Checkerboard6224.5666225.2121242.6591046.0850.21612
      Ma's method6224.8726227.3361235.8361045.2430.069(3+3)×12=72
      Proposed method6225.3516227.6181232.3171041.4240.04212
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    Jin Yu, Chao Chen, Nan Gao, Zonghua Zhang. Camera Calibration Based on Phase Target[J]. Laser & Optoelectronics Progress, 2018, 55(11): 111203

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    Paper Information

    Category: Instrumentation, Measurement and Metrology

    Received: Apr. 3, 2018

    Accepted: May. 21, 2018

    Published Online: Aug. 14, 2019

    The Author Email: Nan Gao (ngao@hebut.edu.cn)

    DOI:10.3788/LOP55.111203

    Topics

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