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    Area of Science:

    • Optics and Photonics
    • Computer Vision
    • Metrology

    Background:

    • Structured light systems are crucial for 3D reconstruction and measurement.
    • Traditional calibration methods for structured light systems are often time-consuming and complex.
    • Existing methods typically require capturing numerous fringe patterns.

    Purpose of the Study:

    • To introduce a novel, simplified, and time-efficient calibration method for structured light systems.
    • To reduce the number of captured patterns required for accurate calibration.
    • To enhance the practicality of structured light system calibration.

    Main Methods:

    • A single composite fringe pattern combining vertical and horizontal components was developed.
    • Bidirectional phase retrieval was performed using Fourier transform profilometry (FTP).
    • A single-shot pattern capture approach was employed for calibration.

    Main Results:

    • The proposed method significantly simplifies the calibration process.
    • Calibration time is substantially reduced compared to conventional techniques.
    • Experimental results show high accuracy and robustness, comparable to traditional methods.
    • The method successfully retrieves bidirectional phase information from a single pattern.

    Conclusions:

    • The novel single-shot calibration method offers a faster and simpler alternative for structured light systems.
    • Fourier transform profilometry (FTP) is effectively utilized for efficient phase retrieval.
    • This technique maintains high accuracy and robustness, making it suitable for practical applications.