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High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques
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A simple, flexible and automatic 3D calibration method for a phase calculation-based fringe projection imaging

Zonghua Zhang1, Shujun Huang, Shasha Meng

  • 1School of Mechanical Engineering, Hebei University of Technology, Tianjin 300130, China. zhzhangtju@hotmail.com

Optics Express
|June 6, 2013
PubMed
Summary

This study introduces a simple 3D calibration method for fringe projection systems using a marked white plate. This approach easily establishes the relationship between absolute phase maps and 3D shape data, improving practical applications.

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Area of Science:

  • Optics and Photonics
  • Computer Vision
  • Metrology

Background:

  • 3D calibration is crucial for phase calculation-based fringe projection systems.
  • Existing methods often require complex equipment like precise translating stages or gauge blocks, hindering practical implementation.
  • A simplified and flexible calibration technique is needed for real-world applications.

Purpose of the Study:

  • To present a novel and simplified 3D calibration method for fringe projection systems.
  • To establish a robust relationship between absolute phase maps and 3D shape data.
  • To overcome the limitations of existing calibration techniques in terms of complexity and practicality.

Main Methods:

  • A white plate with discrete markers on its surface is utilized for calibration.
  • The plate is placed in several random positions.
  • The method determines the relationship between absolute phase and depth, and pixel position and X,Y coordinates.

Main Results:

  • The proposed method successfully establishes the relationship between absolute phase map and 3D shape data.
  • Experimental results validate the effectiveness and accuracy of the new calibration technique.
  • The method demonstrates ease of implementation, flexibility, and automation.

Conclusions:

  • The novel 3D calibration method using a marked white plate offers a simple, flexible, and automatic solution.
  • This technique significantly improves the practicality of fringe projection systems in real-world environments.
  • The findings contribute to more accessible and efficient 3D shape measurement technologies.