Real-time 3D shape measurement by fringe projection and GPU parallel computing

Huijie Zhao; Yang Xu; Hongzhi Jiang; Xiaochun Diao; Chenghao Liu; Mingyi Xing

doi:10.1117/12.2512171

7 March 2019 Real-time 3D shape measurement by fringe projection and GPU parallel computing

Huijie Zhao, Yang Xu, Hongzhi Jiang, Xiaochun Diao, Chenghao Liu, Mingyi Xing

Proceedings Volume 11053, Tenth International Symposium on Precision Engineering Measurements and Instrumentation; 110530Q (2019) https://doi.org/10.1117/12.2512171
Event: 10th International Symposium on Precision Engineering Measurements and Instrumentation (ISPEMI 2018), 2018, Kunming, China

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.

Citation Download Citation

Huijie Zhao, Yang Xu, Hongzhi Jiang, Xiaochun Diao, Chenghao Liu, and Mingyi Xing "Real-time 3D shape measurement by fringe projection and GPU parallel computing", Proc. SPIE 11053, Tenth International Symposium on Precision Engineering Measurements and Instrumentation, 110530Q (7 March 2019); https://doi.org/10.1117/12.2512171

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