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Proceedings Paper

Maximization of signal-to-noise ratio in optical coherence tomography using a depth-dependent matched filter
Author(s): Ameneh Boroomand; Michael S. D. Smith; Dan P. Popescu; Michael Sowa; Sherif S. Sherif
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Paper Abstract

We discuss and demonstrate the dependence of noise on the signal in time-domain optical coherence tomography (TDOCT). We then derive a depth-dependent matched filter to maximize the signal-to-noise ratio at every pixel in a depth scan (A-scan). We use an empirical estimate of the second order statistics of the noise in OCT images of vascular tissue to implement a depth-dependent filter that is matched to these images. The application of our filter results in an average increase of signal-to-noise ratio of about 7 dB compared to a simple averaging operation. Our filter is not specific to time-domain OCT, but it is applicable to other types of OCT systems.

Paper Details

Date Published: 24 October 2012
PDF: 5 pages
Proc. SPIE 8412, Photonics North 2012, 841202 (24 October 2012); doi: 10.1117/12.2001691
Show Author Affiliations
Ameneh Boroomand, Univ. of Manitoba (Canada)
Michael S. D. Smith, National Research Council Canada (Canada)
Dan P. Popescu, National Research Council Canada (Canada)
Michael Sowa, National Research Council Canada (Canada)
Sherif S. Sherif, Univ. of Manitoba (Canada)

Published in SPIE Proceedings Vol. 8412:
Photonics North 2012
Jean-Claude Kieffer, Editor(s)

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