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Multiview phase shifting: a full-resolution and high-speed 3D measurement framework for arbitrary shape dynamic

Zhongwei Li1, Kai Zhong, Y F Li

  • 1State Key Laboratory of Material Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, China. zwli@hust.edu.cn

Optics Letters
|May 2, 2013
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Summary
This summary is machine-generated.

This study introduces a multiview phase shifting (MPS) framework for high-speed 3D reconstruction of dynamic objects. The method accurately captures arbitrary shapes, even with discontinuities, using fewer images.

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Area of Science:

  • Optics and Photonics
  • Computer Vision
  • 3D Metrology

Background:

  • Dynamic 3D shape measurement is crucial for various scientific and industrial applications.
  • Conventional methods often struggle with arbitrary shapes, discontinuities, and require numerous images for accurate reconstruction.
  • Phase shifting techniques offer high accuracy but can be sensitive to object motion and surface properties.

Purpose of the Study:

  • To develop a novel multiview phase shifting (MPS) framework for full-resolution, high-speed 3D reconstruction of dynamic objects with arbitrary shapes.
  • To enable accurate measurement of objects with discontinuous surfaces.
  • To reduce the number of images required for phase shifting measurements.

Main Methods:

  • A multiview phase shifting (MPS) framework was developed.
  • The framework directly identifies corresponding points from wrapped phase-maps.
  • It leverages multiview constraints to enhance robustness.

Main Results:

  • The MPS framework achieves full spatial resolution and high-accuracy 3D reconstruction.
  • It successfully measures arbitrary shape objects, including those with discontinuous surfaces.
  • The method demonstrates robustness against discontinuities due to the multiview constraint.

Conclusions:

  • The proposed MPS framework provides an effective solution for high-speed, full-resolution 3D reconstruction of dynamic, arbitrary-shaped objects.
  • The technique is particularly advantageous for objects with discontinuities.
  • Experimental validation confirms the performance and reliability of the MPS method.