Optics and Precision Engineering, Volume. 33, Issue 4, 641(2025)

Improved phase correlation and clustering ideas for Micro-LED chip microscopic image stitching

Jianpu LIN1,2, Tingyu WANG1,2, Bipeng CAI2,3, Jianhao ZHANG1,2, Ting MEI2,3, Shanling LIN1,2, Zhixian LIN1,2,3, Jianbi LE2、*, and Chaoxing WU2,3
Author Affiliations
  • 1School of Advanced Manufacturing,Fuzhou University,Quanzhou362252,China
  • 2China Fujian Photoelectric Information Science and Technology Innovation Laboratory, Fuzhou350116,China
  • 3School of Physics and Information Engineering,Fuzhou University,Fuzhou50116,China
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    Figures & Tables(13)
    Microscopic images of different Micro-LED chips
    Stitching flowchart in this article
    Image acquisition reference direction
    Comparison of pulse function images
    Image stitching path
    Comparison of stitching details
    Test images
    Corner stitching results
    Clustering contrast
    Stitching results
    • Table 1. Comparison of algorithm performance

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      Table 1. Comparison of algorithm performance

      SIFTSURFORBPCMOUR
      Average time/ms2471781573564
      Stitching success rate/%73.769.672.971.699.4
    • Table 2. Comparison of stitching accuracy

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      Table 2. Comparison of stitching accuracy

      SIFTSURFORBPCMOUR
      X-direction offset1.181.092.181.000.27
      Y-direction offset1.111.071.550.550.19
      Average offset1.141.081.870.780.23
    • Table 3. List of offsets where anomalous data exists

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      Table 3. List of offsets where anomalous data exists

      1-22-33-44-55-66-77-8Up-down
      Offsets(5, 1 016)(5, 1 018)(5, 1 018)(5, 1 021)(5, 1 020)(5, 1 019)(6, 1 018)(767, -5)
      (-5,-1 019)(-5,-1 019)(-5, -1 020)(-5, -1 019)(-5, -1 018)(-5, -1 019)(-5, -1 017)(758, -4)
      (5, 1 016)(5, 1 019)(5, 1 019)(5, 1 020)(5, 1 020)(5, 1 019)(5, 1 019)(772, -5)
      (-5, -1 019)(-5, -1 019)(-5, -1 020)(-5, -1 019)(-5, -1 019)(-5, -1 018)(-5, -1 018)(768, -5)
      (5, 1 017)(5, 1 019)(5, 1 019)(5, 1 020)(5, 1 020)(5, 1 019)(5, 1 019)(-821, -8)*
      (-6, -1 019)(-5, -1 019)(-5, -1 020)(-5, -1 019)(-5, -1 019)(-5, -1 018)(-5, -1 018)(764, -4)
      (5, 1 017)(5, 1 019)(5, 1 019)(5, 1 021)(5, 1 020)(5, 1 019)(5, 1 019)(778, -5)
      (-419, 995)*(-5, -1 019)(-5, -1 021)(-5, -1 019)(-5, -1 019)(-5, -1 019)(-5, -1 018)-
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    Jianpu LIN, Tingyu WANG, Bipeng CAI, Jianhao ZHANG, Ting MEI, Shanling LIN, Zhixian LIN, Jianbi LE, Chaoxing WU. Improved phase correlation and clustering ideas for Micro-LED chip microscopic image stitching[J]. Optics and Precision Engineering, 2025, 33(4): 641

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    Paper Information

    Category:

    Received: Aug. 7, 2024

    Accepted: --

    Published Online: May. 20, 2025

    The Author Email: Jianbi LE (lejianbi@fjoel.cn)

    DOI:10.37188/OPE.20253304.0641

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