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Related Experiment Video

Updated: Jun 24, 2026

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

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

Published on: December 3, 2013

Fringe extrapolation technique based on Fourier transform for interferogram analysis.

Mingjun Dai¹, Yan Wang

¹Department of Electronic Engineering, City University of Hong Kong, Kowloon, Hong Kong. mingjdai@cityu.edu.hk

|April 3, 2009

Summary

A novel fringe extrapolation method enhances phase extraction from fringe patterns, reducing border errors. This technique proves effective for high-precision phase measurements, even with random noise.

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Area of Science:

Optical metrology
Image processing

Background:

Phase extraction from fringe patterns is crucial in optical metrology.
Traditional methods often suffer from errors at the pattern borders.
Improving accuracy in phase measurement is an ongoing challenge.

Purpose of the Study:

To introduce a new fringe extrapolation method for phase extraction.
To reduce errors occurring at the borders of fringe patterns.
To evaluate the method's effectiveness for precision phase measurement.

Main Methods:

Development of a novel fringe extrapolation algorithm.
Simulation of fringe patterns with added random noise.
Experimental validation and comparison with the Fourier transform method.

Main Results:

The proposed method effectively reduces errors at the pattern borders.
Simulations demonstrate the method's robustness against random noise.
Experimental results show comparable or improved accuracy over the Fourier transform method.

Conclusions:

The new fringe extrapolation method is effective for precision phase measurement.
The technique offers a significant improvement in reducing border errors.
This method provides a valuable tool for accurate phase extraction in optical applications.