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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: Stephen A. Burns
  • Vol. 22, Iss. 11 — Nov. 1, 2005
  • pp: 2366–2371

Speckle reduction by I-divergence regularization in optical coherence tomography

Daniel L. Marks, Tyler S. Ralston, and Stephen A. Boppart  »View Author Affiliations


JOSA A, Vol. 22, Issue 11, pp. 2366-2371 (2005)
http://dx.doi.org/10.1364/JOSAA.22.002366


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Abstract

For optical coherence tomography (OCT), ultrasound, synthetic-aperture radar, and other coherent ranging methods, speckle can cause spurious detail that detracts from the utility of the image. It is a problem inherent to imaging densely scattering objects with limited bandwidth. Using a method of regularization by minimizing Csiszar’s I-divergence measure, we derive a method of speckle minimization that produces an image that both is consistent with the known data and extrapolates additional detail based on constraints on the magnitude of the image. This method is demonstrated on a test image and on an OCT image of a Xenopus laevis tadpole.

© 2005 Optical Society of America

OCIS Codes
(100.3010) Image processing : Image reconstruction techniques
(110.4500) Imaging systems : Optical coherence tomography

ToC Category:
Imaging Systems

History
Original Manuscript: January 3, 2005
Manuscript Accepted: March 31, 2005
Published: November 1, 2005

Citation
Daniel L. Marks, Tyler S. Ralston, and Stephen A. Boppart, "Speckle reduction by I-divergence regularization in optical coherence tomography," J. Opt. Soc. Am. A 22, 2366-2371 (2005)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-22-11-2366

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