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Laser & Optoelectronics Progress, Volume. 57, Issue 18, 181002(2020)

Fast and High-Precision Rectangle Detection Algorithm

Lu Lu, Jiong Yang*, Jie Liang, and Yulin Jiang
Author Affiliations
  • School of Mechanical Engineering, Zhengzhou University, Zhengzhou, Henan 450000, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (12)
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    References (16)
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    Figures & Tables(12)
    Rectangular diagram

    Fig. 1. Rectangular diagram

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    Function image of similar slope

    Fig. 2. Function image of similar slope

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    Function image of similar length

    Fig. 3. Function image of similar length

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    Function image of orthogonality

    Fig. 4. Function image of orthogonality

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    Function image of center position relationship

    Fig. 5. Function image of center position relationship

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    Selection of ring regions

    Fig. 6. Selection of ring regions

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    Results of composite image and rectangle detection. (a) Composite image 1; (b) composite image 2; (c) detection result of composite image 1; (d) detection result of composite image 2

    Fig. 7. Results of composite image and rectangle detection. (a) Composite image 1; (b) composite image 2; (c) detection result of composite image 1; (d) detection result of composite image 2

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    Detection results of rectangular part 1 by different algorithms. (a) Rectangular part 1; (b) Ref. [2]; (c) proposed algorithm

    Fig. 8. Detection results of rectangular part 1 by different algorithms. (a) Rectangular part 1; (b) Ref. [2]; (c) proposed algorithm

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    Detection results of rectangular part 2 by different algorithms. (a) Rectangular part 2; (b) Ref. [2]; (c) proposed algorithm

    Fig. 9. Detection results of rectangular part 2 by different algorithms. (a) Rectangular part 2; (b) Ref. [2]; (c) proposed algorithm

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    Detection results of rectangular part 3 by different algorithms. (a) Rectangular part 3; (b) Ref. [8]; (c) proposed algorithm

    Fig. 10. Detection results of rectangular part 3 by different algorithms. (a) Rectangular part 3; (b) Ref. [8]; (c) proposed algorithm

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    • Table 1. Comparison of detection results of composite images

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      Table 1. Comparison of detection results of composite images

      ImageImagesize /(pixel×pixel)Timeconsuming /msNumber ofrectanglesobtained
      Synthetic image 1404×570166
      Synthetic image 2782×512928

    • Table 2. Comparison of detection results of proposed algorithm and Ref. [2]

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      Table 2. Comparison of detection results of proposed algorithm and Ref. [2]

      ResultRef. [2]Proposed algorithmActual information
      Image size /(pixel×pixel)3072×20483072×2048
      Time /ms2600352
      Center coordinates of 1st rectangle(214.000,476.000)(213.507,474.272)(213.000,474.000)
      Length /pixel145.278145.729145.000
      Width /pixel129.817131.833131.000
      Inclination /(°)5.9625.9166.000
      Center coordinates of 2nd rectangle(233.000,314.000)(232.308,313.049)(232.000,313.000)
      Length /pixel76.03879.72379.000
      Width /pixel60.37366.15965.000
      Inclination /(°)-29.620-29.144-29.000
      Center coordinates of 3rd rectangle(361.000,505.000)(359.962,505.074)(360.000,505.000)
      Length /pixel125.536129.721128.000
      Width /pixel73.17679.11978.000
      Inclination /(°)22.68022.50422.000
      Center coordinates of 4th rectangle(395.000,373.000)(394.437,373.050)(394,373)
      Length /pixel123.136142.962142.000
      Width /pixel111.945135.127133.000
      Inclination /(°)37.38034.48534.000
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    Lu Lu, Jiong Yang, Jie Liang, Yulin Jiang. Fast and High-Precision Rectangle Detection Algorithm[J]. Laser & Optoelectronics Progress, 2020, 57(18): 181002

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    Paper Information

    Category: Image Processing

    Received: Nov. 13, 2019

    Accepted: Feb. 10, 2020

    Published Online: Sep. 2, 2020

    The Author Email: Yang Jiong (jiong_yang@foxmail.com)

    DOI:10.3788/LOP57.181002

    Topics

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