Acta Optica Sinica, Volume. 40, Issue 15, 1504001(2020)

Small Target Detection Method Based on Robinson-Guard Filter and Pixel Convergence

Chenfeng Lou1,2,3, Yong Zhang1,2、*, and Jiaqi Yin1,2,3
Author Affiliations
  • 1Key Laboratory of Infrared Detection and Imaging Technology, Chinese Academy of Sciences, Shanghai 200083, China
  • 2Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China
  • 3University of Chinese Academy of Sciences, Beijing 100049, China
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    Figures & Tables(16)
    Belt noise in image shot by linear array sensor
    Belt noise causes max(z) being too high
    Deviation ratio between MC of circle target with radius of R and ideal value
    Targets with minimum MC when 2≤n≤4. (a) MC=0.3536; (b) MC=0.3849; (c) MC=0.3750
    MC of some typical pixels. (a) MC=0.4033; (b) MC=0.6479; (c) MC=0.8000
    Simulated infrared target in guard band
    Window position shift in low SNR condition. (a) Original image; (b) fusion map of original image and shifted window
    Flowchart of proposed method
    Processing of IR images of birds in clouds. (a1)(a2) Original images; (b1)(b2) heat maps of window distribution; (c1)(c2) target probability maps; (d1)(d2) segmentation results
    Three-dimensional projection of normalized |MTPM| in Figs. 9(c1) and 9(c2). (a) Projection of Fig. 9(c1); (b) projection of Fig. 9(c2)
    Simulated images and MTPM for different SNR. (a1) Simulated image with RSNR=0.2; (b1) simulated image with RSNR=0.5; (c1) simulated image with RSNR=1; (d1) simulated image with RSNR=3; (a2) MTPM with RSNR=0.2; (b2) MTPM with RSNR=0.5; (c2) MTPM with RSNR=1; (d2) MTPM with RSNR=3
    Comparison of several target detection methods. (a1)(b1)(c1)(d1) Scenes a,b,c,and d; (a2)(b2)(c2)(d2) NIPPS; (a3)(b3)(c3)(d3) RIPT; (a4)(b4)(c4)(d4) MDTDLMS-RDLCM; (a5)(b5)(c5)(d5) proposed method
    ROC curves of different algorithms
    • Table 1. Detection rates of different methods

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      Table 1. Detection rates of different methods

      SceneNIPPSRIPTMDTDLMS-RDLCMProposed method
      a1.0001.0000.4670.667
      b1.0001.0001.0001.000
      c0.7260.55100.615
      d1.0000.8520.7730.784
    • Table 2. False alarms of different methods

      View table

      Table 2. False alarms of different methods

      SceneNIPPSRIPTMDTDLMS-RDLCMProposed method
      a0.8910.79400
      b0.9590.91300
      c0.9460.996N/A0.566
      d0.9620.9890.7150.492
    • Table 3. [in Chinese]

      View table

      Table 3. [in Chinese]

      MethodMax-medianNIPPSRIPTMDTDLMS-RDLCMProposed method
      Time per 256 pixel×256 pixel0.5224.598.6011.390.89
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    Chenfeng Lou, Yong Zhang, Jiaqi Yin. Small Target Detection Method Based on Robinson-Guard Filter and Pixel Convergence[J]. Acta Optica Sinica, 2020, 40(15): 1504001

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    Paper Information

    Category: Detectors

    Received: Dec. 31, 2019

    Accepted: Apr. 28, 2020

    Published Online: Aug. 14, 2020

    The Author Email: Zhang Yong (zybxy@sina.com)

    DOI:10.3788/AOS202040.1504001

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