Optics and Precision Engineering, Volume. 29, Issue 9, 2235(2021)

Discretization matching of weakly-correlated speckle images in oblique field of view

Mei-tu YE1...2, Jin LIANG1,*, Lei-gang LI2, Mao-dong REN2, and Ren-hong CHEN12 |Show fewer author(s)
Author Affiliations
  • 1State Key Laboratory for Manufacturing Systems Engineering, School of Mechaical Engineering, Xi'an Jiaotong University, Xi’an70049, China
  • 2Innovation Lab, XTOP 3D Technology (Shenzhen) Co. Ltd., Shenzhen518060, China
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    Figures & Tables(17)
    Coefficient field of image in different oblique degrees
    Image correlation process with the discretization matching method
    Schematic diagram of the discretization matching method
    Discretization subset matching principle
    DIC matching of small subsets within the oblique images
    Elimination of mismatched points
    Schematic diagram of oblique imaging projection
    Simulated speckle images in different oblique angles
    Matching probability statistics of oblique images under different subset sizes
    Displacement u field and correlation residual of different oblique angles
    Accuracy test results of discretization matching method
    Matching examples of different matching methods
    Performance comparison of different matching methods
    Acquire UAV blade images under oblique field of view
    Discretization matching of oblique speckle images of the UAV blade
    Dynamic deformation fields of the UAV blade
    • Table 1. Performance comparison of different matching methods

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      Table 1. Performance comparison of different matching methods

      匹配方法失效角度/°匹配对数误匹配概率精度损失/pixel匹配时间/s
      传统匹配[528.5264004.2%01.023
      SURF+RANSAC[1121.39981.02%±0.007 50.618
      FAST AIIM[13> 42.782440%±0.00513.36
      本文方法> 42.7864000%±0.031.576
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    Mei-tu YE, Jin LIANG, Lei-gang LI, Mao-dong REN, Ren-hong CHEN. Discretization matching of weakly-correlated speckle images in oblique field of view[J]. Optics and Precision Engineering, 2021, 29(9): 2235

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    Paper Information

    Category: Information Sciences

    Received: Mar. 23, 2021

    Accepted: --

    Published Online: Nov. 22, 2021

    The Author Email: LIANG Jin (liangjin@mail.xjtu.edu.cn)

    DOI:10.37188/OPE.20212909.2235

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