Four-pattern, phase-step non-sensitive phase shifting method based on Carré algorithm

•The proposed method obtains the wrapped and absolute phases from only 4 patterns.•The accuracy of the retrieved phase is insensitive to the error of phase step.•The absolute accuracy reaches 0.02 mm and relative accuracy reaches 0.03%.•It is suitable for high speed high precision 3D shape measureme...

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Veröffentlicht in:	Measurement : journal of the International Measurement Confederation 2021-02, Vol.171, p.108762, Article 108762
Hauptverfasser:	Zhang, Yinnan, Fan, Naiji, Wu, Yanxue, Wu, Gaoxu, Luo, Huifang, Yan, Jin, Yang, Shichao, Liu, Fei
Format:	Artikel
Sprache:	eng
Schlagworte:	3D measurement Accuracy Algorithms Carre algorithms Carré algorithm Digital fringe projection Linear phase Matrix Measurement Measurement methods Phase retrieval Phase shifting algorithm Phase transitions
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