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Neural network enabled fringe projection through scattering media.

Shile Yang, Yuecheng Shen, Jiawei Luo

    Optics Express
    |June 11, 2024
    PubMed
    Summary

    This study introduces a novel neural network fringe projector that overcomes optical scattering limitations. It successfully projects variable fringes through scattering media, enhancing fringe-based imaging techniques.

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    Area of Science:

    • Optics and Photonics
    • Computational Imaging
    • Machine Learning Applications

    Background:

    • Fringe projection is crucial for applications like fringe projection profilometry and structured illumination microscopy.
    • Optical scattering significantly hinders fringe projection capabilities, limiting its use in complex environments.
    • Existing wavefront shaping methods can create focal points but struggle with projecting complex fringe patterns over large areas through scattering media.

    Purpose of the Study:

    • To develop a fringe projector capable of overcoming optical scattering.
    • To enable the projection of fringes with variable periodicities and orientation angles through scattering media.
    • To address the limitations of current fringe projection technologies in scattering environments.

    Main Methods:

    • Development of a neural network-enabled fringe projector.
    • Testing the projector's performance with ground glass diffusers and multimode fibers.
    • Quantifying fringe projection fidelity using Pearson's correlation coefficient.

    Main Results:

    • The neural network projector successfully projected fringes with variable periodicities and orientation angles through scattering media.
    • Average Pearson's correlation coefficients of 86.9% for ground glass diffusers and 79.7% for multimode fibers were achieved.
    • Demonstrated the effectiveness of the neural network approach for fringe projection in scattering conditions.

    Conclusions:

    • The proposed neural network enabled fringe projector effectively overcomes scattering limitations.
    • This advancement significantly broadens the applicability of fringe-based imaging techniques.
    • Fringe projection is now feasible in previously challenging scattering environments.