Optics and Precision Engineering, Volume. 31, Issue 24, 3630(2023)

SIFT feature extraction method for the defocused blurred area of multi-focus images

Xiaohua XIA*... Qian ZHAO, Huatao XIANG, Xufang QIN and Pengju YUE |Show fewer author(s)
Author Affiliations
  • School of Construction Machinery, Chang'an University, Xi'an710064, China
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    Figures & Tables(8)
    Defocused imaging diagram
    Registered multi-focus images for experiments
    Comparison of feature extraction and matching effect between conventional and proposed methods
    Unregistered multi-focus images for experiments
    Result of feature extraction and matching of unregistered multi-focus images
    • Table 1. Comparison of feature matching quantity between the proposed method and the four comparison methods

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      Table 1. Comparison of feature matching quantity between the proposed method and the four comparison methods

      SubjectSIFTSURFORBDAISY-SIFTProposed method
      Fig. 2(a)43503144300
      Fig. 2(b)14212520300
      Fig. 2(c)11210210774300
      Fig. 2(d)141210151180300
      Fig. 2(e)11913781112300
      Fig. 2(f)102126136116300
    • Table 2. Comparison of feature extraction errors between the proposed method and the four comparison methods

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      Table 2. Comparison of feature extraction errors between the proposed method and the four comparison methods

      SubjectSIFTSURFORBDAISY-SIFTProposed method
      Fig. 2(a)1.431.600.531.620.39
      Fig. 2(b)1.391.710.21209.12(mismatch)0.20
      Fig. 2(c)0.590.910.590.640.10
      Fig. 2(d)0.500.490.410.680.11
      Fig. 2(e)0.960.850.501.020.17
      Fig. 2(f)0.650.550.210.920.03
    • Table 3. Comparison of number of matching features between proposed method and comparison methods

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      Table 3. Comparison of number of matching features between proposed method and comparison methods

      SubjectSIFTSURFORBDAISY-SIFTProposed method
      Fig. 4(a)7210665106300
      Fig. 4(b)45381441300
      Fig. 4(c)0000300
      Fig. 4(d)8512610886300
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    Xiaohua XIA, Qian ZHAO, Huatao XIANG, Xufang QIN, Pengju YUE. SIFT feature extraction method for the defocused blurred area of multi-focus images[J]. Optics and Precision Engineering, 2023, 31(24): 3630

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    Paper Information

    Category:

    Received: May. 4, 2023

    Accepted: --

    Published Online: Jan. 5, 2024

    The Author Email: XIA Xiaohua (xhxia@chd.edu.cn)

    DOI:10.37188/OPE.20233124.3630

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