Mr. Zhigang Jin Profile

Zhigang Jin

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Proceedings Article | 10 October 2020 Poster + Paper

A new phase unwrapping method based on inner-fringe coding

Zhigang Jin, Lei Lu, Ke Wu

Proceedings Volume 11552, 115521P (2020) https://doi.org/10.1117/12.2575248

KEYWORDS: Fringe analysis, Phase shifting

Read Abstract +

When implementing the phase shifting profilometry to reconstruct the object, phase unwrapping is a critical step when the object with height jump is reconstructed. In this paper, a new method encoding the phase shift value is proposed to unwrap the phase map by two-frequency unwrapping method. Only four fringe patterns are required and the phase value of the low frequency is encoded into the phase shift value of the projected fringe patterns. The effectiveness of the proposed method is verified by the simulations.

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