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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

  • Editor: Franco Gori
  • Vol. 28, Iss. 5 — May. 1, 2011
  • pp: 934–939

Moiré pattern movement compensation and quadrature averaging phase retrieval from time series of speckled arbitrary phase shift interferograms for automatic computation of fundus pulsation curve of the human eye

André Malz, Ilos Eix, Wilhelm Stork, and Klaus-Dieter Müller-Glaser  »View Author Affiliations


JOSA A, Vol. 28, Issue 5, pp. 934-939 (2011)
http://dx.doi.org/10.1364/JOSAA.28.000934


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Abstract

Purpose: the method described here allows for automatic calculation of the fundus pulse from interferometric measurements. Method: a low intensity laser beam is coupled into the eye. Two strong reflections, one of the cornea and one of the retina, interfere on a high-speed complementary metal-oxide-semiconductor camera chip. After eye movement compensation, a speckle-free phase of the interferograms is calculated from a series of interference fringes. Then, the fundus pulsation is calculated from the phase shift between two consecutive interferograms. Problems: occurring speckle perturbs the fringe images, and therefore, classical geometrical movement compensation algorithms do not work with sufficient accuracy. The movement compensation algorithm needs to work without prior knowledge of the phase. Results: the proposed algorithms yield the fundus pulse from speckled interferograms, overcoming the above mentioned problems.

© 2011 Optical Society of America

OCIS Codes
(100.2650) Image processing : Fringe analysis
(100.5070) Image processing : Phase retrieval
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(170.4460) Medical optics and biotechnology : Ophthalmic optics and devices
(170.4580) Medical optics and biotechnology : Optical diagnostics for medicine
(100.3175) Image processing : Interferometric imaging

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: August 13, 2010
Revised Manuscript: February 4, 2011
Manuscript Accepted: February 27, 2011
Published: April 29, 2011

Virtual Issues
Vol. 6, Iss. 6 Virtual Journal for Biomedical Optics

Citation
André Malz, Ilos Eix, Wilhelm Stork, and Klaus-Dieter Müller-Glaser, "Moiré pattern movement compensation and quadrature averaging phase retrieval from time series of speckled arbitrary phase shift interferograms for automatic computation of fundus pulsation curve of the human eye," J. Opt. Soc. Am. A 28, 934-939 (2011)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-28-5-934

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