A phase retrieval method for fringe projection profilometry based on the phase pyramid

Qiyang Wu; Junhua Sun

doi:10.1117/12.2580006

5 November 2020 A phase retrieval method for fringe projection profilometry based on the phase pyramid

Qiyang Wu, Junhua Sun

Proceedings Volume 11567, AOPC 2020: Optical Sensing and Imaging Technology; 115672U (2020) https://doi.org/10.1117/12.2580006
Event: Applied Optics and Photonics China (AOPC 2020), 2020, Beijing, China

Abstract

High-precision phase retrieval is the key step of the fringe projection profilometry, while the traditional multifrequency phase-shifting method is easy to suffer from noise, which leads to a decrease in measurement accuracy. Based on the local similarity of phases, a new phase retrieval method is proposed in order to improve the accuracy of the phaseshifting and reduce the phase order error. The input images are down-sampled to obtain an image pyramid, and the phase of the high-resolution images is recovered from the low-resolution fringe patterns. Simulation and experimental results show that the proposed method can effectively reduce the phase error in the multi-frequency phase-shifting method and has good robustness and high accuracy

Citation Download Citation

Qiyang Wu and Junhua Sun "A phase retrieval method for fringe projection profilometry based on the phase pyramid", Proc. SPIE 11567, AOPC 2020: Optical Sensing and Imaging Technology, 115672U (5 November 2020); https://doi.org/10.1117/12.2580006

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