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Related Experiment Video

Updated: May 15, 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

Separation of complex fringe patterns using two-dimensional continuous wavelet transform.

Krzysztof Pokorski¹, Krzysztof Patorski

¹Institute of Micromechanics and Photonics, Warsaw University of Technology, 8 Sw. A. Boboli Street, Warsaw 02-525, Poland. k.pokorski@mchtr.pw.edu.pl

|December 25, 2012

Summary

This summary is machine-generated.

This study introduces an automatic method using wavelet transform to separately analyze multiple fringe patterns in one image. It offers an advantage over Fourier transform techniques for fringe analysis.

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Area of Science:

Optics and Photonics
Image Processing
Signal Analysis

Background:

Fringe patterns are crucial in optical metrology.
Analyzing superimposed fringe sets in a single image is challenging.
Existing methods often require spectral separation or user intervention.

Purpose of the Study:

To develop an automatic method for analyzing multiple fringe sets within a single fringe pattern.
To enable separate analysis of different fringe families without spectral separation.
To provide a robust alternative to existing fringe analysis techniques.

Main Methods:

Utilizing a two-dimensional continuous wavelet transform (2D-CWT).
Implementing a robust ridge extraction algorithm for fringe set isolation.
The method operates fully automatically without user input.

Main Results:

Successfully demonstrated the separate analysis of multiple fringe families from a single image.
Simulations confirmed superior performance compared to Fourier transform methods.
Experimental validation confirmed the method's practical applicability.

Conclusions:

The proposed wavelet transform-based method effectively analyzes superimposed fringe patterns.
It offers a fully automatic and robust solution for fringe analysis.
This technique advances optical metrology by simplifying complex fringe pattern interpretation.