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Three-dimensional trace measurements for fast-moving objects using binary-encoded fringe projection techniques.

Wei-Hung Su, Cho-Yo Kuo, Fu-Jen Kao

    Applied Optics
    |October 17, 2014
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    Summary
    This summary is machine-generated.

    This study introduces a novel fringe projection technique for accurately tracing fast-moving objects. The method uses binary-encoded fringe patterns and Fourier transforms to capture object profiles, enabling dynamic physical property analysis.

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    Area of Science:

    • Optics and Photonics
    • Metrology
    • Dynamic Systems Analysis

    Background:

    • Accurate shape measurement of dynamic objects is challenging.
    • Existing fringe projection techniques struggle with complex surfaces and color variations.

    Purpose of the Study:

    • To develop a robust fringe projection technique for tracing fast-moving objects.
    • To enable detailed analysis of dynamic object physical properties.

    Main Methods:

    • Utilizing a binary-encoded fringe pattern projected by a strobe lamp.
    • Employing Fourier transform for phase extraction from sequential measurements.
    • Implementing phase unwrapping referencing the binary pattern for accurate profile retrieval.

    Main Results:

    • Successfully retrieved a stream of object profiles from sequential unwrapped phases.
    • Demonstrated reliable performance for colorful, spatially isolated, and discontinuous surfaces.
    • Achieved low computation cost and localized unwrapping errors.

    Conclusions:

    • The proposed technique effectively traces dynamic object shapes.
    • Binary-encoded fringe patterns offer advantages for phase unwrapping in challenging scenarios.
    • Enables advanced analysis of physical properties for dynamic objects.