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Determining 3D Flow Fields via Multi-camera Light Field Imaging
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A Calibration Method for a Self-Rotating, Linear-Structured-Light Scanning, Three-Dimensional Reconstruction System

Jianping Zhao1,2, Yong Cheng1, Gen Cai1

  • 1Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China.

Sensors (Basel, Switzerland)
|December 28, 2021
PubMed
Summary

This study introduces a plane-constrained calibration method for self-rotating, linear-structured-light (LSL) 3D scanning systems. The technique accurately calibrates system parameters, enhancing measurement precision for 3D reconstruction.

Keywords:
calibrationlinear-structured lightrotation centerthree-dimensional reconstruction

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Area of Science:

  • * Computer Vision and Robotics
  • * Metrology and Measurement Science

Background:

  • * Accurate 3D reconstruction requires precise calibration of scanning systems.
  • * Existing methods for self-rotating, linear-structured-light (LSL) systems can be complex and time-consuming.

Purpose of the Study:

  • * To develop a rapid and accurate calibration method for self-rotating LSL 3D reconstruction systems.
  • * To improve the measurement accuracy of 3D scanning by establishing precise positional relationships between system components.

Main Methods:

  • * Utilized plane constraints based on the plane equation principle.
  • * Collected point cloud data from a plane target using the LSL scanning system.
  • * Calibrated positional parameters between the LSL module and the self-rotating system coordinate frames.

Main Results:

  • * Successfully obtained optimal position parameters through experimental calibration.
  • * Established the transformation equation for the calibrated system.
  • * Demonstrated improved measurement accuracy in 3D scanning and reconstruction of a test piece.

Conclusions:

  • * The proposed plane-constrained calibration method is effective for self-rotating LSL 3D reconstruction systems.
  • * This approach significantly enhances the overall measurement accuracy of the 3D scanning system.