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Related Experiment Video

Updated: Jul 9, 2025

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

Precise Phase Measurement for Fringe Reflection Technique through Optimized Camera Response.

Fendan Hu¹, Wenqi Zhu¹, Wei Huang¹

¹College of Computer Science & Technology, Zhejiang University of Technology, Hangzhou 310023, China.

Sensors (Basel, Switzerland)

|December 9, 2023

Summary

This summary is machine-generated.

This study introduces a new method to improve non-contact optical measurements using fringe reflection. By developing a scaled energy quantity, researchers reduced nonlinear errors, enhancing measurement precision.

Keywords:

camera response function fringe reflection technique precision improvement

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Area of Science:

Optical Measurement
Surface Characterization
Metrology

Background:

Fringe Reflection is a non-contact optical technique for precise spatial measurement.
Nonlinearities in fringe pattern generation and capture introduce errors in phase extraction.
System precision is limited by these inevitable phase measurement errors.

Purpose of the Study:

To reduce nonlinear errors in Fringe Reflection measurements.
To construct a new quantity from pixel values that linearly responds to fringe patterns.
To enhance the precision of optical measurement systems.

Main Methods:

Hypothesized similarity between fringe pattern display and camera capture processes.
Developed a scaled energy quantity based on the camera response function.
Optimized the extracted camera response function to minimize errors.

Main Results:

The proposed scaled energy quantity demonstrated a more linear response to the ideal fringe pattern.
Optimization of the camera response function significantly reduced measurement errors.
Experimental verification confirmed improved precision in determining point positions.

Conclusions:

The novel method effectively mitigates nonlinear errors in Fringe Reflection.
The technique offers enhanced precision for specular surface characterization.
This approach advances non-contact optical measurement capabilities.