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Proceedings Paper

Real time three-dimensional shape measurement with phase-to-height lookup table
Author(s): Wenbo Guo; Zhoujie Wu; Qican Zhang; Motoharu Fujigaki
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Paper Abstract

Phase-to-height mapping is indispensable part of three-dimensional (3D) shape measurement system based on phase analysis, which guarantees the accuracy of 3D reconstruction. In this paper, a real time 3D shape reconstruction method based on dual-frequency composite grating projection and phase-height lookup table is proposed. In this method, a reference plane is moved with a known interval along the measurement depth direction to establish a mapping lookup table between the wrapped phase of dual-frequency composite grating and the corresponding spatial height pixel by pixel respectively. The actual experimental results show that the reconstruction accuracy of this method is better than that of the traditional phase-to-height quadratic fitting method. Finally, combining the high performance parallel computation of GPU, the real time 3D shape reconstruction with the speed of 60 fps and the resolution of 1152*800 pixels is realized.

Paper Details

Date Published: 16 October 2019
PDF: 6 pages
Proc. SPIE 11205, Seventh International Conference on Optical and Photonic Engineering (icOPEN 2019), 112052F (16 October 2019); doi: 10.1117/12.2541795
Show Author Affiliations
Wenbo Guo, Sichuan Univ. (China)
Zhoujie Wu, Sichuan Univ. (China)
Qican Zhang, Sichuan Univ. (China)
Motoharu Fujigaki, Univ. of Fukui (Japan)

Published in SPIE Proceedings Vol. 11205:
Seventh International Conference on Optical and Photonic Engineering (icOPEN 2019)
Anand Asundi; Motoharu Fujigaki; Huimin Xie; Qican Zhang; Song Zhang; Jianguo Zhu; Qian Kemao, Editor(s)

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