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Related Experiment Video

Updated: Feb 19, 2026

High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques
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Dynamic projection theory for fringe projection profilometry.

Hong Sheng, Jing Xu, Song Zhang

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    |November 2, 2017
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces dynamic projection theory for fringe projection profilometry (FPP) to overcome object overexposure. The method rapidly measures overexposed regions, significantly reducing errors in 3D reconstruction and surface measurement.

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    Area of Science:

    • Optical Metrology
    • 3D Imaging
    • Computer Vision

    Background:

    • Fringe projection profilometry (FPP) is a key technique for 3D reconstruction and surface measurement.
    • A significant limitation of FPP is its susceptibility to overexposure when measuring objects with highly variable reflectance.
    • This overexposure leads to inaccurate data and limits the applicability of FPP.

    Purpose of the Study:

    • To develop a novel dynamic projection theory for FPP.
    • To address and overcome the challenge of overexposure in FPP measurements.
    • To enhance the accuracy and applicability of FPP for objects with wide reflectance ranges.

    Main Methods:

    • A dynamic projection theory was proposed, modifying projected fringe patterns based on feedback from captured image intensities.
    • The system iteratively refines fringe patterns to improve measurement in previously overexposed areas.
    • Experimental validation was conducted to assess the effectiveness of the dynamic projection approach.

    Main Results:

    • The proposed dynamic projection theory significantly reduced the number of overexposed points.
    • Effective measurement of overexposed regions was achieved within one or two iterations.
    • The method demonstrated superior performance compared to existing state-of-the-art techniques.

    Conclusions:

    • The dynamic projection theory offers a rapid and effective solution for FPP overexposure.
    • This advancement broadens the practical applications of fringe projection profilometry.
    • The technique improves the reliability of 3D reconstruction and surface measurement for challenging objects.