17 February 2020 Two-wavelength phase-shifting method with four patterns for three-dimensional shape measurement
Jun Wu, Zihao Zhou, Qing Liu, Yajun Wang, Yuwei Wang, Yanhong Gu, Xiangcheng Chen
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Abstract

Fringe projection technique has been widely used for three-dimensional (3D) shape measurement. However, it remains challenging to achieve high-speed measurement. A two-wavelength phase-shifting profilometry method with only four patterns is presented. Specifically, all these four patterns contain two wavelength components. The short wavelength component was used to compute the wrapped phase map, while the long one was used to unwrap the wrapped phase map. The performance of the proposed method was validated by both simulation study and experimental results.

© 2020 Society of Photo-Optical Instrumentation Engineers (SPIE) 0091-3286/2020/$28.00 © 2020 SPIE
Jun Wu, Zihao Zhou, Qing Liu, Yajun Wang, Yuwei Wang, Yanhong Gu, and Xiangcheng Chen "Two-wavelength phase-shifting method with four patterns for three-dimensional shape measurement," Optical Engineering 59(2), 024107 (17 February 2020). https://doi.org/10.1117/1.OE.59.2.024107
Received: 25 September 2019; Accepted: 4 February 2020; Published: 17 February 2020
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CITATIONS
Cited by 8 scholarly publications.
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KEYWORDS
Phase shifts

3D metrology

Fringe analysis

Cameras

Projection systems

Optical engineering

3D modeling

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