1 May 2014 Miscalibration detection in phase-shifting algorithms by applying radon transform
Author Affiliations +
Abstract
The phase shifting algorithms are a widespread method in the technical and scientific literature for relatively noninvasive measurements of a variety physical variables. PSI (phase-shifting interferometry) techniques consist in acquiring at least three interferograms to obtain the wrapped phase. It is important to emphasize that if these acquired intensity images are inadequate, the measurement would have an error associated. The presence of miscalibration or mechanical vibrations in an interferogram can cause an inaccurate measurement; it is possible to design a phase shifting algorithm with a better performance. The present work proposes a novel methodology in order to determine the existence of a miscalibrated interferogram in a four steps phase shifting algorithm by applying the Radon transform.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Tania A. Ramirez-Delreal, Miguel Mora-González, Marco A. Paz, Jesús Muñoz-Maciel, Ulises H. Rodriguez-Marmolejo, "Miscalibration detection in phase-shifting algorithms by applying radon transform", Proc. SPIE 9131, Optical Modelling and Design III, 91311G (1 May 2014); doi: 10.1117/12.2051680; https://doi.org/10.1117/12.2051680
PROCEEDINGS
7 PAGES


SHARE
Back to Top