Laser & Optoelectronics Progress, Volume. 61, Issue 16, 1611009(2024)

Meta Light Field Event Imaging System (Invited)

Yu Meng... Manchao Bao, Tao Yue** and Xuemei Hu* |Show fewer author(s)
Author Affiliations
  • School of Electronic Science and Engineering, Nanjing University, Nanjing 210033, Jiangsu, China
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    Figures & Tables(16)
    General view of meta light-field event imaging system
    Aggregation diagram of geometrical multi-perspective weighted event
    Event queue manager algorithm
    Event queue manager algorithm flow
    Schematic diagram of simulation scenes. (a) Pedestrian scene; (b) light field imaging result of pedestrian scene; (c) ball drop scene; (d) light field imaging result of ball drop scene
    Simulation scenes and reconstruction results. (a) Ball slip and (b) pedestrian; meta light field event reconstruction results of (c) ball slip and (d) pedestrian
    Hardware system view of meta light field event camera. (a) Side view of hardware system and corresponding components;(b) micro-lens placed after main lens.
    Deniosing results of different methods. (a) Original event data; (b) Ynoise filter; (c) Knoise filter; (d) proposed method
    Results of proposed method of removing manually added noise events.Results after (a) adding 300 noise events and (b) results after processing with proposed method; results after (c) adding 2000 noise events and (d) results after processing with proposed method
    Reconstruction result of proposed method. (a) Imaging scheme; (b) reconstruction results with different numbers
    Results of multi-view perception of scene by meta light-field event imaging system. (a) Intensity frame; (b) accumulation frame
    Image of two balls thrown at different distances. (a) Experimental setup of motion tracking; (b) results of motion trajectory
    • Table 1. Processing parameters for simulation data

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      Table 1. Processing parameters for simulation data

      ParameterSetting
      Local buffer activation threshold5
      Range of weight spreading3×3×3
      Length of buffer queue1500
      Weighting threshold of voting4.5
      Distribution of weight spreading0‒1 Gaussian
    • Table 2. Error analysis of simulation test

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      Table 2. Error analysis of simulation test

      SceneTime window /msGround truth /cmDepth STD /cmAverage error /cm
      Ball slip10541.5763.7962
      Pedestrian10541.5771.1260
    • Table 3. Processing parameters for real data

      View table

      Table 3. Processing parameters for real data

      ParameterSetting
      Local buffer activation threshold5
      Range of weight spreading3×3×3
      Length of buffer queue200
      Weighting threshold of voting4.5
      Distribution of weight spreading0‒1 Gaussian
    • Table 4. Denoising results of proposed method

      View table

      Table 4. Denoising results of proposed method

      NiEiEoNoErrNRR
      300650895070.14590.023
      5006708900190.13410.038
      80070081034440.14750.055
      10007208996330.13810.033
      120074081005600.13560.050
      150077081020480.13230.032
      180080081007720.12570.040
      20008208992460.12080.023
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    Yu Meng, Manchao Bao, Tao Yue, Xuemei Hu. Meta Light Field Event Imaging System (Invited)[J]. Laser & Optoelectronics Progress, 2024, 61(16): 1611009

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    Paper Information

    Category: Imaging Systems

    Received: May. 28, 2024

    Accepted: Jul. 10, 2024

    Published Online: Aug. 12, 2024

    The Author Email: Tao Yue (yuetao@nju.edu.cn), Xuemei Hu (xuemeihu@nju.edu.cn)

    DOI:10.3788/LOP241380

    CSTR:32186.14.LOP241380

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