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Proceedings Paper

Speckle noise reduction for optical coherence tomography
Author(s): S. H. Xiang; Liang Zhou; Joseph M. Schmitt
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Paper Abstract

Optical coherence tomography (OCT) has shown great promise for non-invasive and contact-less imaging of subsurface soft tissues. However, the problem of low image contrast caused by speckle noise has limited its applications in diagnosis. This paper present a wavelet-based method designed to improve OCT image contrast by reducing speckle noise. After transforming the image into a set of sub-images with different resolution levels in wavelet domain, we threshold high-frequency coefficients nonlinearity in horizontal, vertical, and diagonal directions. The experimental results show that wavelet processing suppresses speckle noise in OCT images of soft tissue effectively, while maintaining the sharpness of image features.

Paper Details

Date Published: 13 January 1998
PDF: 10 pages
Proc. SPIE 3196, Optical and Imaging Techniques for Biomonitoring III, (13 January 1998); doi: 10.1117/12.297921
Show Author Affiliations
S. H. Xiang, Hong Kong Univ. of Science and Technology (Hong Kong China)
Liang Zhou, Hong Kong Univ. of Science and Technology (Hong Kong China)
Joseph M. Schmitt, Hong Kong Univ. of Science and Technology (Hong Kong China)


Published in SPIE Proceedings Vol. 3196:
Optical and Imaging Techniques for Biomonitoring III
Hans-Jochen Foth; Renato Marchesini; Halina Podbielska M.D.; Abraham Katzir, Editor(s)

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