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Speckle noise reduction in optical coherence tomography of paint layers

Hughes, M., Spring, M., Podoleanu, Adrian G.H. (2010) Speckle noise reduction in optical coherence tomography of paint layers. Applied Optics, 49 (1). pp. 99-107. ISSN 1559-128X. (doi:10.1364/AO.49.000099) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1364/AO.49.000099

Abstract

We present and characterize a sequential angular compounding method for reducing speckle contrast in optical coherence tomography images of paint layers. The results are compared with postprocessing methods, and we show that the compounding technique can improve the speckle contrast ratio in B-scans by better than a factor of 2 in exchange for a negligible loss of resolution. As a result, image aesthetics are improved, thin layers become more distinct, and edge-detection algorithms work more efficiently. The effect of varying the angular scan size and number of averages is investigated, and it is found that a degree of statistical correlation between speckle patterns exists, even for relatively large changes in angle of incidence. Angular compounding is also performed on three-dimensional data sets and compared with a method whereby en face slices are averaged over depth. © 2009 Optical Society of America.

Item Type: Article
DOI/Identification number: 10.1364/AO.49.000099
Uncontrolled keywords: Coherent light, Edge detection, Paint, Speckle, Tomography,
Subjects: Q Science > QC Physics
R Medicine > R Medicine (General) > R857.O6 Optical coherence tomography
Divisions: Faculties > Sciences > School of Physical Sciences > Applied Optics Group
Depositing User: Giles Tarver
Date Deposited: 16 Jul 2015 14:57 UTC
Last Modified: 01 Aug 2019 10:39 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/49450 (The current URI for this page, for reference purposes)
Hughes, M.: https://orcid.org/0000-0001-5301-2492
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