Abstract
Binary coding methods have been widely used for phase unwrapping. However, traditional temporal binary coding methods require a sequence of binary patterns to encode the fringe order information. This paper presents a spatial binary coding (SBC) method that encodes the fringe order into only one binary pattern. Each stripe of the sinusoidal phase-shifting patterns is corresponding to an $N$-bit codeword of the binary pattern. A robust stripe-wise decoding scheme is also developed to extract the $N$-bit codeword, then fringe order can be determined, and stripe-wise phase unwrapping can be performed. Experiment results confirm that the SBC method can correctly recover the absolute phase of measured objects with only one additional binary pattern.
© 2020 Optical Society of America
Full Article | PDF ArticleMore Like This
Zicong Zou, Yongjian Zhu, Guofeng Qin, and Dong Wang
Appl. Opt. 62(1) 246-254 (2023)
Jian Wang, Yiping Cao, Haitao Wu, and Zhimi Wei
Opt. Express 31(25) 41952-41966 (2023)
Y. Xing, C. Quan, and C. J. Tay
Appl. Opt. 55(34) 9774-9781 (2016)