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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 8, Iss. 9 — Oct. 2, 2013

Speckle reduction of retinal optical coherence tomography based on contourlet shrinkage

Jianbing Xu, Haiyan Ou, Edmund Y. Lam, P. C. Chui, and Kenneth K. Y. Wong  »View Author Affiliations


Optics Letters, Vol. 38, Issue 15, pp. 2900-2903 (2013)
http://dx.doi.org/10.1364/OL.38.002900


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Abstract

Speckle reduction of retinal optical coherence tomography (OCT) images helps the diagnosis of ocular diseases. In this Letter, we present a speckle reduction method based on shrinkage in the contourlet domain for retinal OCT images. The algorithm overcomes the disadvantages of the wavelet shrinkage method, which lacks directionality and anisotropy. The trade-off between speckle reduction and edge preservation is controlled by a single adjustable parameter, which determines the threshold in the contourlet domain. Results show substantial reduction of speckle noise and enhanced visualization of layer structures as demonstrated in the image of the central fovea region of the human retina. It is expected to be utilized in a wide range of biomedical imaging applications.

© 2013 Optical Society of America

OCIS Codes
(100.2980) Image processing : Image enhancement
(110.6150) Imaging systems : Speckle imaging
(170.1610) Medical optics and biotechnology : Clinical applications
(170.4500) Medical optics and biotechnology : Optical coherence tomography

ToC Category:
Imaging Systems

History
Original Manuscript: June 4, 2013
Manuscript Accepted: July 8, 2013
Published: July 31, 2013

Virtual Issues
Vol. 8, Iss. 9 Virtual Journal for Biomedical Optics

Citation
Jianbing Xu, Haiyan Ou, Edmund Y. Lam, P. C. Chui, and Kenneth K. Y. Wong, "Speckle reduction of retinal optical coherence tomography based on contourlet shrinkage," Opt. Lett. 38, 2900-2903 (2013)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ol-38-15-2900


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