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Structured light system calibration method with optimal fringe angle.

Beiwen Li, Song Zhang

    Applied Optics
    |January 22, 2015
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces an improved structured light system calibration method using optimal fringe angles. This novel approach enhances measurement accuracy by up to 38% compared to conventional techniques.

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    Area of Science:

    • Computer Vision
    • Metrology
    • Optical Engineering

    Background:

    • Structured light system calibration often models projectors as inverse cameras.
    • Conventional methods use horizontal/vertical patterns, which can be insensitive to depth variations.
    • This insensitivity compromises calibration accuracy in structured light systems.

    Purpose of the Study:

    • To propose a novel calibration method for structured light systems.
    • To address the limitations of conventional calibration techniques regarding depth variation sensitivity.
    • To improve the overall measurement accuracy of structured light systems.

    Main Methods:

    • Developed a new calibration method based on optimal fringe angle determination.
    • Implemented a structured light system for experimental validation.
    • Compared the proposed method against conventional calibration techniques.

    Main Results:

    • The novel calibration method significantly improves measurement accuracy.
    • Achieved up to a 38% increase in measurement accuracy compared to conventional methods.
    • Demonstrated effectiveness within a calibration volume of 300x250x500 mm.

    Conclusions:

    • Optimal fringe angle determination is crucial for accurate structured light calibration.
    • The proposed method offers a substantial improvement over traditional approaches.
    • This technique enhances the reliability and precision of 3D measurements using structured light.