Improved 3D imaging and measurement with fringe projection structured light field

Xiaojie Zhang; Zewei Cai; Xiaoli Liu; Xiang Peng

doi:10.1117/12.2550218

12 March 2020 Improved 3D imaging and measurement with fringe projection structured light field

Xiaojie Zhang, Zewei Cai, Xiaoli Liu, Xiang Peng

Proceedings Volume 11438, 2019 International Conference on Optical Instruments and Technology: Optoelectronic Imaging/Spectroscopy and Signal Processing Technology; 114380X (2020) https://doi.org/10.1117/12.2550218
Event: 2019 International Conference on Optical Instruments and Technology, 2019, Beijing, China

Abstract

In optical three-dimensional imaging and measurement based on fringe projection, wrapped phases may cause a problem of ambiguity, which can be overcome by phase unwrapping generally. In this paper, a method for absolute phase unwrapping using light-field imaging is reported. In a recorded light field under structured illumination, i.e., a structured light field, a wrapped phase-encoded field was retrieved and resampled in diverse image planes associated with several possible fringe orders in a measurement volume. By leveraging phase consistency constraint, the resampled wrapped phase-encoded field correct fringe orders could be determined to unwrap phase without any additional encoding information.

Citation Download Citation

Xiaojie Zhang, Zewei Cai, Xiaoli Liu, and Xiang Peng "Improved 3D imaging and measurement with fringe projection structured light field", Proc. SPIE 11438, 2019 International Conference on Optical Instruments and Technology: Optoelectronic Imaging/Spectroscopy and Signal Processing Technology, 114380X (12 March 2020); https://doi.org/10.1117/12.2550218

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