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High-resolution, real-time simultaneous 3D surface geometry and temperature measurement.

Yatong An, Song Zhang

    Optics Express
    |July 14, 2016
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a novel method for real-time, simultaneous measurement of 3D surface geometry and temperature. The system achieves high-resolution data acquisition, enabling advanced material analysis and thermal mapping.

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    Area of Science:

    • Metrology
    • Thermal Imaging
    • Computer Vision

    Background:

    • Accurate 3D surface geometry and temperature data are crucial for various scientific and industrial applications.
    • Existing methods often struggle with simultaneous, real-time acquisition due to sensor limitations and calibration complexities.

    Purpose of the Study:

    • To develop a unified system for real-time, simultaneous measurement of 3D surface geometry and temperature.
    • To overcome challenges in calibrating disparate sensor systems (structured light and thermal) within a common coordinate frame.

    Main Methods:

    • A holistic calibration approach was developed to align structured light and thermal imaging systems in the same world coordinate system.
    • A computational framework was created to determine sub-pixel temperature for each 3D point and handle occluded data.
    • A hardware system was engineered for simultaneous sensing at 26 Hz with 768 × 960 points per frame.

    Main Results:

    • Successful simultaneous acquisition of 3D surface geometry and temperature data in real time.
    • Demonstrated sub-pixel temperature mapping for each 3D point.
    • Achieved high-speed data capture (26 Hz) with detailed point cloud resolution.

    Conclusions:

    • The developed method enables efficient and accurate real-time 3D geometry and temperature measurement.
    • This technique offers a significant advancement for applications requiring integrated spatial and thermal data.
    • The system's ability to handle sensor wavelength differences and occlusions enhances its practical utility.