Laser Methods in Chemistry, Biology, and Medicine

Application of wavelet analysis in optical coherence tomography for obscured pattern recognition

  1. C. Buranachai2,
  2. P. Thavarungkul1,
  3. P. Kanatharana2,3,
  4. I.V. Meglinski4,5

Article first published online: 11 AUG 2009

DOI: 10.1002/lapl.200910089

Issue

Laser Physics Letters

Laser Physics Letters

Volume 6, Issue 12, pages 892–895, December 2009

Additional Information

How to Cite

Buranachai, C., Thavarungkul, P., Kanatharana, P. and Meglinski, I. (2009), Application of wavelet analysis in optical coherence tomography for obscured pattern recognition. Laser Physics Letters, 6: 892–895. doi: 10.1002/lapl.200910089

Author Information

  1. 1

    Trace Analysis and Biosensor Research Center, Prince of Songkla University, Hatyai, Songkhla, Thailand

  2. 2

    Department of Physics, Faculty of Science, Prince of Songkla University, Hatyai, Songkhla, Thailand

  3. 3

    Department of Chemistry, Faculty of Science, Prince of Songkla University, Hatyai, Songkhla, Thailand

  4. 4

    Cranfield Health, Cranfield University, Cranfield, MK43 0AL, UK

  5. 5

    Department of Physics, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand

Publication History

  1. Issue published online: 2 NOV 2009
  2. Article first published online: 11 AUG 2009
  3. Manuscript Accepted: 2 AUG 2009
  4. Manuscript Revised: 30 JUL 2009
  5. Manuscript Received: 28 JUL 2009

Funded by

  • British Council

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Keywords:

  • wavelet analysis;
  • optical coherence tomography;
  • pattern recognition

Abstract

Nowadays the optical coherent tomography (OCT) is one of the most perspective optical diagnostic modalities widely used for non-invasive imaging of the internal structure of various complex turbid media from a range of composite materials to biological tissues. OCT has been attracting a great amount of attention due to its effective capability rejecting multiple scattering. However, for highly scattered composite structures the multiple scattering still remains a factor limiting OCT to the quasiballistic regime. In order to enhance the OCT imaging capabilities and reduce the statistical noise associated with the multiple scattering the wavelet analysis has been applied. The wavelet analysis has been used to decompose the OCT images of printed stripes covered by a highly scattered and not transparent layer of white correction tape. The obtained results demonstrate a significant reduction of speckle noise background and enhancement of OCT images of the obscured patterns. This likely to be enabled extending the applicability of the combined OCT-wavelet decomposition analysis to investigate sensitive documents, historical artworks and valuable security papers. (© 2009 by Astro Ltd., Published exclusively by WILEY-VCH Verlag GmbH & Co. KGaA)

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