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Speckle reduction in optical coherence tomography imaging by affine-motion image registration

Alonso-Caneiro, David, Read, Scott A., & Collins, Michael J. (2011) Speckle reduction in optical coherence tomography imaging by affine-motion image registration. Journal of Biomedical Optics (JBO), 16(11), 116027-1--116027-5.

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Abstract

Signal-degrading speckle is one factor that can reduce the quality of optical coherence tomography images. We demonstrate the use of a hierarchical model-based motion estimation processing scheme based on an affine-motion model to reduce speckle in optical coherence tomography imaging, by image registration and the averaging of multiple B-scans. The proposed technique is evaluated against other methods available in the literature. The results from a set of retinal images show the benefit of the proposed technique, which provides an improvement in signal-to-noise ratio of the square root of the number of averaged images, leading to clearer visual information in the averaged image. The benefits of the proposed technique are also explored in the case of ocular anterior segment imaging.

Impact and interest:

10 citations in Scopus
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10 citations in Web of Science®

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Full-text downloads:

87 since deposited on 20 Nov 2011
15 in the past twelve months

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ID Code: 47104
Item Type: Journal Article
Keywords: medical image processing, optical tomography, image registration, speckle reduction
DOI: 10.1117/1.3652713
ISSN: 1560-2281
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > BIOMEDICAL ENGINEERING (090300) > Biomechanical Engineering (090302)
Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > OPTOMETRY AND OPHTHALMOLOGY (111300) > Ophthalmology (111301)
Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > OPTOMETRY AND OPHTHALMOLOGY (111300) > Optometry and Ophthalmology not elsewhere classified (111399)
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Current > Schools > School of Optometry & Vision Science
Copyright Owner: Copyright 2011 International Society for Optical Engineering
Deposited On: 21 Nov 2011 09:08
Last Modified: 22 Nov 2011 05:22

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