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Related Experiment Video

Updated: May 27, 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 projection profilometry based on a novel phase shift method.

Yanjun Fu¹, Qian Luo

¹Key Laboratory of Nondestructive Testing (Ministry of Education), Nanchang Hangkong University, Nanchang, Jiangxi, 330063, China. fyjpkh@sina.com.cn

|November 24, 2011

Summary

This summary is machine-generated.

A new cycle correction method for fringe projection profilometry accurately measures 3D object shapes. This technique minimizes errors, improving measurement precision for large objects.

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Area of Science:

Optics and Photonics
Metrology
Computer Vision

Background:

Fringe projection profilometry (FPP) is a key technique for 3D shape measurement.
Oblique-angle projection in FPP causes grating fringe broadening, leading to measurement errors.
Existing methods for fringe cycle correction are often complex or time-consuming.

Purpose of the Study:

To develop a convenient and accurate fringe cycle correction method for fringe projection profilometry.
To enhance the precision of 3D shape measurements, particularly in oblique-angle projection scenarios.
To enable the measurement of large objects with improved accuracy.

Main Methods:

A novel, quick, and well-fitted fringe cycle correction method is proposed.
An accurate four-step phase shift algorithm is developed based on the proposed correction method.
Comparative experiments were conducted to validate the effectiveness of the new method.

Main Results:

The proposed method effectively eliminates fringe cycle errors in oblique-angle projection.
Measurement accuracy is significantly improved, with a relative error of less than 1.5%.
The technique demonstrates high precision and reliability for 3D shape measurement.

Conclusions:

The novel phase shift method offers a robust solution for fringe cycle correction in FPP.
This advancement enhances the accuracy and applicability of fringe projection profilometry.
The method is suitable for widespread use in measuring the 3D shapes of large objects.