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Related Concept Videos

Interference and Diffraction02:18

Interference and Diffraction

Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.
Interference: Path Lengths01:10

Interference: Path Lengths

Consider two sources of sound, that may or may not be in phase, emitting waves at a single frequency, and consider the frequencies to be the same.
Two special sources may be considered when they are in phase. This can be easily achieved by feeding the two sources from the same source. An example would be synchronizing the two speakers by feeding them with the same source, such as the sound waves produced by a tuning fork. This setup ensures that the two sources have the same frequency and are...

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Related Experiment Video

Updated: Jun 10, 2026

High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques
11:34

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

Published on: December 3, 2013

Algorithm for computer tracing of interference fringes.

S Krishnaswamy

    Applied Optics
    |August 12, 2010
    PubMed
    Summary
    This summary is machine-generated.

    A new algorithm automatically traces fringes in digitized interferograms. This predictor-corrector method uses fringe orientation to accurately locate fringe centers, improving analysis.

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    Area of Science:

    • Optical Engineering
    • Image Processing

    Background:

    • Interferometry is crucial for precision measurements.
    • Automated analysis of interferograms is challenging.

    Purpose of the Study:

    • To develop an algorithm for automatic fringe tracing in digitized interferograms.
    • To enhance the accuracy and efficiency of interferogram analysis.

    Main Methods:

    • A predictor-corrector scheme is employed for fringe center tracing.
    • Utilizes approximate fringe normal and tangent for point prediction.
    • Searches along the fringe normal to find the exact next point.

    Main Results:

    • The algorithm successfully traces fringe centers automatically.
    • The predictor-corrector approach enhances tracing accuracy.
    • Demonstrates effective fringe localization in digitized interferograms.

    Conclusions:

    • The proposed algorithm offers an efficient method for fringe tracing.
    • This technique improves automated interferogram analysis.
    • Facilitates more precise optical measurements.