Acta Optica Sinica, Volume. 40, Issue 1, 0111019(2020)

Method for Interpolation of Missing Point Cloud Based on Phase Mapping in Binocular Vision

Chenghang Li1, Junpeng Xue1,2, Wei Lang1, and Qican Zhang1、*
Author Affiliations
  • 1College of Electronics and Information Engineering, Sichuan University, Chengdu, Sichuan 610065, China
  • 2School of Aeronautics and Astronautics, Sichuan University, Chengdu, Sichuan 610065, China
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    Figures & Tables(14)
    Imaging model of binocular stereo vision
    Occlusion diagram of binocular vision measurement system
    Display of binocular vision system measurement data. (a) Distorted fringe image of left camera; (b) distorted fringe image of right camera; (c) reconstructed result of facial mask
    Calibration diagram of implicit phase-height mapping relationship
    Analysis on calibration parameter of implicit phase-height mapping relationship. (a) a(u,v); (b) b(u,v); (c) c(u,v)
    Fringe patterns taken by camera and fringe spectrum. (a) Vertically distributed fringe pattern; (b) inclined fringe pattern; (c) Fourier spectrum distribution of fringe pattern
    Diagram of point cloud missing area
    Flow chart of proposed method
    Experimental setup
    Measurement results of standard sample with two balls. (a) Remove part of complete point cloud data of standard sample as holes to be interpolated; (b) interpolated result by proposed method
    Reconstructed result of facial mask. (a) Reconstructed result with local point cloud data missing on both sides of nose and some point cloud data artificially deducted in upper lip; (b) interpolated result of proposed method; (c) interpolated point cloud data in left nasal alar; (d) interpolated point cloud data in right nasal alar; (e) interpolated point cloud data in upper lip; (f) difference distribution between interpolated result and measured result of point cloud deducted area in upper lip
    Interpolated results of facial mask by Geomagic. (a) Reconstructed result by Geomagic with local point cloud data missing on both sides of nose and some point cloud data artificially deducted in upper lip; (b) interpolated point cloud data by Geomagic in left nasal alar; (c) interpolated point cloud data by Geomagic in right nasal alar; (d) interpolated point cloud data by Geomagic in upper lip; (e) comparison of interpolated results of proposed method and Geomagic in upper lip; (f) difference d
    Experiment results of gourd model. (a) Binocular reconstructed result with point cloud absence in both ends and middle part; (b) interpolated result of proposed method; (c) interpolated point cloud data in left end; (d) interpolated point cloud data in right end
    • Table 1. Accuracy evaluation of binocular vision system and proposed methodmm

      View table

      Table 1. Accuracy evaluation of binocular vision system and proposed methodmm

      No.Binocular vision light systemProposed method
      Diameter of ADiameter of BDABDiameter of ADiameter of BDAB
      ValueErrorValueErrorValueErrorValueErrorValueErrorValueError
      150.795-0.00450.788-0.009100.195-0.05950.793-0.00650.786-0.011100.191-0.063
      250.764-0.03550.759-0.038100.201-0.05350.770-0.02950.746-0.051100.195-0.059
      350.782-0.01850.8480.051100.2830.03050.771-0.02850.783-0.014100.208-0.046
      450.8230.02450.756-0.041100.197-0.05650.8200.02150.759-0.038100.197-0.056
      550.762-0.03750.8080.011100.235-0.01950.768-0.03150.8180.021100.236-0.018
      650.793-0.00750.780-0.017100.3000.04650.7840.01550.778-0.019100.2890.035
      750.8100.01150.8230.026100.221-0.03350.789-0.01050.752-0.045100.199-0.054
      850.8540.05550.770-0.027100.2640.01050.8650.06650.779-0.018100.2580.004
      950.755-0.04450.8300.033100.239-0.01550.768-0.03150.8340.037100.228-0.026
      1050.8440.04550.8230.026100.232-0.02250.8520.05350.8050.008100.217-0.037
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    Chenghang Li, Junpeng Xue, Wei Lang, Qican Zhang. Method for Interpolation of Missing Point Cloud Based on Phase Mapping in Binocular Vision[J]. Acta Optica Sinica, 2020, 40(1): 0111019

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    Paper Information

    Category: Special Issue on Computational Optical Imaging

    Received: Jul. 29, 2019

    Accepted: Sep. 4, 2019

    Published Online: Jan. 6, 2020

    The Author Email: Zhang Qican (zqc@scu.edu.cn)

    DOI:10.3788/AOS202040.0111019

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