3D shape measurements using phase-encoded patterns and phase-shifting techniques

Ching-Cherng Sun; Yeh-Wei Yu; Wei-Hung Su

doi:10.1117/12.2323813

4 September 2018 3D shape measurements using phase-encoded patterns and phase-shifting techniques

Ching-Cherng Sun, Yeh-Wei Yu, Wei-Hung Su

Proceedings Volume 10755, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XII; 1075512 (2018) https://doi.org/10.1117/12.2323813
Event: SPIE Optical Engineering + Applications, 2018, San Diego, California, United States

Abstract

A fringe projection method based on the phase-shifting technique for 3D shape measurements is presented. Phase extraction is performed by the phase-shifting technique, while unwrapping is discerned by the phase-encoded patterns. There is no need to take additional projections for phase unwrapping. The fringe patterns used for phase extraction can be directly utilized for unwrapping. Experiments show that absolute phases could be obtained with high reliability.

Citation Download Citation

Ching-Cherng Sun, Yeh-Wei Yu, and Wei-Hung Su "3D shape measurements using phase-encoded patterns and phase-shifting techniques", Proc. SPIE 10755, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XII, 1075512 (4 September 2018); https://doi.org/10.1117/12.2323813

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