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Automated measurement method for 360 degrees profilometry of 3-D diffuse objects.

X X Cheng, X Y Su, L R Guo

    Applied Optics
    |June 29, 2010
    PubMed
    Summary
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    This study presents an automated 360-degree surface topography measurement method for 3-D objects. Using structured illumination and triangulation, it achieves high accuracy and data rates for diffuse surfaces.

    Area of Science:

    • * Optical Metrology
    • * 3-D Imaging and Reconstruction

    Background:

    • * Accurate surface topography measurement is crucial for 3-D object characterization.
    • * Existing methods may lack efficiency or comprehensive coverage for diffuse surfaces.

    Purpose of the Study:

    • * To develop and present an automated method for 360-degree surface topography measurement.
    • * To investigate the application of triangulation with structured illumination for this purpose.

    Main Methods:

    • * Utilized a structured illumination technique based on the principle of triangulation.
    • * Developed an automated system including a structured lighting projector, a 2-D detector array, and a microcomputer.
    • * Employed computer analysis of geometric specifications and an optimized data acquisition schedule.

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    Main Results:

    • * Demonstrated high data acquisition rates and measuring accuracy.
    • * Successfully acquired 360-degree surface topography data for diffuse 3-D objects.
    • * Experimental results validate the effectiveness of the automated measurement system.

    Conclusions:

    • * The presented automated method provides an effective solution for 360-degree surface topography measurement of 3-D diffuse objects.
    • * The triangulation-based structured illumination approach offers high accuracy and efficiency.