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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 17, Iss. 1 — Jan. 1, 2000
  • pp: 21–27

Interferometric data analysis based on Markov nonlinear filtering methodology

Igor P. Gurov and Denis V. Sheynihovich  »View Author Affiliations


JOSA A, Vol. 17, Issue 1, pp. 21-27 (2000)
http://dx.doi.org/10.1364/JOSAA.17.000021


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Abstract

For data processing in conventional phase shifting interferometry, Fourier transform, and least-squares-fitting techniques, a whole interferometric data series is required. We propose a new interferometric data processing methodology based on a recurrent nonlinear procedure. The signal value is predicted from the previous step to the next step, and the prediction error is used for nonlinear correction of an <i>a priori</i> estimate of the parameters phase, visibility, or frequency of interference fringes. Such a recurrent procedure is correct on the condition that the noise component be a Markov stochastic process realization. The accuracy and stability of the recurrent Markov nonlinear filtering algorithm were verified by computer simulations. It was discovered that the main advantages of the proposed methodology are dynamic data processing, phase error minimization, and high noise immunity against the influence of non-Gaussian noise correlated with the signal and the automatic solution of the phase unwrapping problem.

© 2000 Optical Society of America

OCIS Codes
(030.4280) Coherence and statistical optics : Noise in imaging systems
(050.5080) Diffraction and gratings : Phase shift
(070.6020) Fourier optics and signal processing : Continuous optical signal processing
(100.5070) Image processing : Phase retrieval

Citation
Igor P. Gurov and Denis V. Sheynihovich, "Interferometric data analysis based on Markov nonlinear filtering methodology," J. Opt. Soc. Am. A 17, 21-27 (2000)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-17-1-21


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