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Related Experiment Video

Updated: Jun 19, 2026

High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques
11:34

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

Published on: December 3, 2013

Flexible 3-D shape measurement using projector defocusing.

Shuangyan Lei1, Song Zhang

  • 1Department of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, USA.

Optics Letters
|October 20, 2009
PubMed
Summary
This summary is machine-generated.

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This study introduces a simple 3-D shape measurement method using a defocused projector to create sinusoidal fringe patterns. This technique avoids projector gamma calibration, enabling flexible 3-D shape measurement systems.

Area of Science:

  • Optical Metrology
  • Computer Vision
  • 3-D Imaging

Background:

  • Accurate 3-D shape measurement is crucial for various applications.
  • Traditional methods often require complex calibration procedures.

Purpose of the Study:

  • To develop a simplified 3-D shape measurement technique.
  • To utilize a defocused projector for generating ideal fringe patterns.

Main Methods:

  • Generating sinusoidal fringe patterns by defocusing binary structured patterns.
  • Implementing phase shift through spatial shifting of binary patterns.
  • Avoiding projector gamma calibration.

Main Results:

  • Successfully generated ideal sinusoidal fringe patterns.

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Related Experiment Videos

Last Updated: Jun 19, 2026

High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques
11:34

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

Published on: December 3, 2013

Micro 3D Printing Using a Digital Projector and its Application in the Study of Soft Materials Mechanics
09:24

Micro 3D Printing Using a Digital Projector and its Application in the Study of Soft Materials Mechanics

Published on: November 27, 2012

Production of a Strain-Measuring Device with an Improved 3D Printer
06:17

Production of a Strain-Measuring Device with an Improved 3D Printer

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  • Achieved phase shift without complex calibration.
  • Demonstrated ease of implementation.

    • Conclusions:

    • The proposed defocused projector technique offers a flexible and easy-to-implement solution for 3-D shape measurement.
    • This method is promising for developing adaptable 3-D measurement systems using digital video projectors.