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High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques
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High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques

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Circular fringe projection profilometry.

Hong Zhao, Chunwei Zhang, Changquan Zhou

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    |November 3, 2016
    PubMed
    Summary
    This summary is machine-generated.

    A new 3D measurement technique, circular fringe projection profilometry (CFPP), was developed. CFPP accurately determines object height by analyzing projected circular fringe patterns and camera-detected distances.

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    Area of Science:

    • Optics and Photonics
    • Metrology
    • Computer Vision

    Background:

    • 3D measurement techniques are crucial in various scientific and industrial fields.
    • Conventional fringe projection profilometry (FPP) methods have limitations in certain applications.
    • A need exists for novel, high-accuracy 3D profilometry methods.

    Purpose of the Study:

    • To introduce a novel three-dimensional (3D) measurement method: circular fringe projection profilometry (CFPP).
    • To detail the unique mechanism of CFPP for recovering 3D surface information.
    • To experimentally validate the performance and accuracy of the proposed CFPP technique.

    Main Methods:

    • Proposed circular fringe projection profilometry (CFPP) for 3D measurement.
    • Utilized fringe pattern projection, capture, phase demodulation, and phase unwrapping.
    • Calculated point height based on distance to projector's optical center, using divergence angle and distance to optical axis.

    Main Results:

    • CFPP recovers height by calculating the distance to the optical center.
    • The divergence angle is derived from the phase of circular fringe patterns.
    • Experimental results confirmed the validity and accuracy of the CFPP method.

    Conclusions:

    • Circular fringe projection profilometry (CFPP) offers a novel approach to 3D surface measurement.
    • The method leverages unique optical principles for height recovery.
    • CFPP demonstrates potential for accurate and reliable 3D profilometry applications.