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Related Experiment Video

Updated: Jun 8, 2026

Digital Inline Holographic Microscopy (DIHM) of Weakly-scattering Subjects
10:16

Digital Inline Holographic Microscopy (DIHM) of Weakly-scattering Subjects

Published on: February 8, 2014

Reconstructed double-pulsed holograms: a system for efficient automated analysis.

S I Green, Z Zhao

    Applied Optics
    |September 24, 2010
    PubMed
    Summary

    Automated holographic particle image velocimetry (HPIV) analyzes microbubble movement in water. This system eliminates manual surveying of holograms, enabling efficient 3D velocity field measurements.

    Area of Science:

    • Fluid dynamics
    • Optical measurement techniques
    • Image processing

    Background:

    • Holographic particle image velocimetry (HPIV) is crucial for 3D velocity field measurements.
    • Manual analysis of double-pulsed holograms is a significant bottleneck in HPIV.

    Purpose of the Study:

    • To develop an automated system for analyzing double-pulsed holograms of microbubbles.
    • To eliminate the need for human observers in HPIV data processing.

    Main Methods:

    • A three-part algorithm was developed for automated hologram analysis.
    • Microbubbles were detected using a CCD-based object detection system in the holographic (x-y) plane.
    • Autofocusing and image analysis techniques (edge detection, patch correlation) were used for bubble focusing and displacement measurement.

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    Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization

    Published on: July 5, 2016

    Related Experiment Videos

    Last Updated: Jun 8, 2026

    Digital Inline Holographic Microscopy (DIHM) of Weakly-scattering Subjects
    10:16

    Digital Inline Holographic Microscopy (DIHM) of Weakly-scattering Subjects

    Published on: February 8, 2014

    Uncovering Hidden Dynamics of Natural Photonic Structures Using Holographic Imaging
    05:45

    Uncovering Hidden Dynamics of Natural Photonic Structures Using Holographic Imaging

    Published on: March 31, 2022

    Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization
    10:28

    Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization

    Published on: July 5, 2016

    Main Results:

    • The system automatically detects and analyzes microbubbles in double-pulsed holograms.
    • Bubble size and displacement between laser pulses are determined.
    • The developed system efficiently processes holographic data.

    Conclusions:

    • Automated HPIV analysis of microbubbles is feasible and efficient.
    • This system overcomes the limitations of manual HPIV data interpretation.
    • The technique enables precise 3D velocity field measurements in microbubble flows.