Abstract

We demonstrate a method to directly demodulate closed-fringe interferograms using a kind of active contour called a snake. This method can be used to demodulate a single closed-fringe interferogram when its background illumination and/or contrast terms have a spatial frequency similar to the spatial frequency of the equivalent normalized interferogram. Among other cases, this problematic usually appears in interferometry when spurious reflection appears in the interferogram. In these situations, typical Fourier-based methods are of no help. We show a set of simulations and experimental results that prove the effectiveness of the proposed method.

© 2010 Optical Society of America

Regularized frequency-stabilizing method for single closed-fringe interferogram demodulation

Chao Tian, Yongying Yang, Shuna Zhang, Dong Liu, Yongjie Luo, and Yongmo Zhuo
Opt. Lett. 35(11) 1837-1839 (2010)

Robust phase demodulation of interferograms with open or closed fringes

Mariano Rivera
J. Opt. Soc. Am. A 22(6) 1170-1175 (2005)

Fringe-follower regularized phase tracker for demodulation of closed-fringe interferograms

M. Servin, J. L. Marroquin, and F. J. Cuevas
J. Opt. Soc. Am. A 18(3) 689-695 (2001)

High-accuracy phase demodulation method compatible to closed fringes in a single-frame interferogram based on deep learning

Shizhu Yuan, Yao Hu, Qun Hao, and Shaohui Zhang
Opt. Express 29(2) 2538-2554 (2021)

Phase recovery from a single interferogram with closed fringes by phase unwrapping

Jesús Muñoz-Maciel, Francisco J. Casillas-Rodríguez, Miguel Mora-González, Francisco G. Peña-Lecona, Víctor M. Duran-Ramírez, and Gilberto Gómez-Rosas
Appl. Opt. 50(1) 22-27 (2011)