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Linear systems theory for the analysis of phase-shifting algorithms

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Quiroga Mellado, Juan Antonio and Estrada, Julio César and Servín Guirado, Manuel (2010) Linear systems theory for the analysis of phase-shifting algorithms. In Interferometry Xv: Techniques And Analysis. Proceedings of the SPIE (7790). SPIE--The International Society for Optical Engineering. ISBN 978-0-8194-8286-0

Official URL: http://proceedings.spiedigitallibrary.org/



Abstract

Phase-shifting algorithms are methods used for recovering the modulating phase of an interferogram sequence obtained by Phase Stepping Interferometry (PSI) techniques. Typically, the number of interferograms in a PSI sequence is from 3 to around 9 interferograms, although we can find algorithms that works with more than 9 interferograms. In this paper, we are going to show the analysis and design of phase-shifting algorithms from the point of view of the linear systems paradigm from digital signal processing. We will show how this paradigm describes in a general fashion the phase-shifting algorithm systems, and how we can easily design tunable phase-shifting algorithms using this simple scheme.


Item Type:Book Section
Additional Information:

© (2010) SPIE--The International Society for Optical Engineering.
Interferometry XV: Techniques and Analysis (15º. 2010. San Diego, EE.UU.)

Uncontrolled Keywords:Measuring Interferometry, Signal Processing, Phase Demodulation, Interferogram Analysis
Subjects:Sciences > Physics > Optics
ID Code:22807
Deposited On:16 Sep 2013 11:51
Last Modified:16 Sep 2013 11:51

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