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Real-time 3D shape measurement by fringe projection and GPU parallel computing
Author(s): Huijie Zhao; Yang Xu; Hongzhi Jiang; Xiaochun Diao; Chenghao Liu; Mingyi Xing
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Paper Abstract

When fringe projection profilometry is applied for real-time 3D shape measurement, several problems remain to be solved such as multi-wavelength heterodyne phase unwrapping is sensitive to motion and the computation cost is high. In this paper, a real-time 3D shape measurement method with optimized multi-wavelength heterodyne phase unwrapping and GPU parallel computing is proposed. Experimental results demonstrate that the proposed method can acquire 3D shape at 40 fps. Dynamic object with discontinuities can be measured and the phase unwrapping mistakes are eliminated by smoothing the phase of beat frequency during multi-wavelength heterodyne phase unwrapping.

Paper Details

Date Published: 7 March 2019
PDF: 6 pages
Proc. SPIE 11053, Tenth International Symposium on Precision Engineering Measurements and Instrumentation, 110530Q (7 March 2019); doi: 10.1117/12.2512171
Show Author Affiliations
Huijie Zhao, Beihang Univ. (China)
Yang Xu, Beihang Univ. (China)
Hongzhi Jiang, Beihang Univ. (China)
Xiaochun Diao, Beihang Univ. (China)
Chenghao Liu, Beihang Univ. (China)
Mingyi Xing, Beihang Univ. (China)


Published in SPIE Proceedings Vol. 11053:
Tenth International Symposium on Precision Engineering Measurements and Instrumentation
Jiubin Tan; Jie Lin, Editor(s)

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