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Related Experiment Video

Updated: Jul 3, 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

Adaptive asynchronous algorithm for fringe pattern demodulation.

J A Gómez-Pedrero¹, J A Quiroga, M Servín

¹Optics Department, Universidad Complutense de Madrid, Facultad de Ciencias Físicas, Ciudad Universitaria, s/n 28040 Madrid, Spain. jagomezp@fis.ucm.es

|July 22, 2008

Summary

This summary is machine-generated.

We developed a new spatial adaptive asynchronous algorithm for fringe pattern demodulation. This method improves frequency response by selecting optimal sample spacing for each point, enhancing accuracy in optical metrology.

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Area of Science:

Optical Metrology
Signal Processing

Background:

Fringe pattern analysis is crucial for optical measurement techniques.
Standard asynchronous methods for fringe demodulation have limitations in frequency response.

Purpose of the Study:

To introduce a novel spatial adaptive asynchronous algorithm for fringe pattern demodulation.
To enhance the frequency response of fringe analysis methods.

Main Methods:

The algorithm builds upon the standard five-step asynchronous method.
It adaptively selects the optimal sample spacing for each fringe pattern point.
Frequency response is maximized by choosing the best sample spacing per location.

Main Results:

The proposed algorithm demonstrates an improved frequency response compared to existing methods.
Theoretical analysis confirms the algorithm's effectiveness.
Experimental validation shows the practical feasibility of the spatial adaptive approach.

Conclusions:

The spatial adaptive asynchronous algorithm offers superior performance in fringe pattern demodulation.
This method provides a more robust and accurate approach for optical measurements.