Retinal optical coherence tomography image enhancement via shrinkage denoising using double-density dual-tree complex wavelet transform

Shahab Chitchian, Markus A. Mayer, Adam R. Boretsky, Frederik J. Van Kuijk, Massoud Motamedi

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Image enhancement of retinal structures, in optical coherence tomography (OCT) scans through denoising, has the potential to aid in the diagnosis of several eye diseases. In this paper, a locally adaptive denoising algorithm using double-density dual-tree complex wavelet transform, a combination of the double-density wavelet transform and the dual-tree complex wavelet transform, is applied to reduce speckle noise in OCT images of the retina. The algorithm overcomes the limitations of commonly used multiple frame averaging technique, namely the limited number of frames that can be recorded due to eye movements, by providing a comparable image quality in significantly less acquisition time equal to an order of magnitude less time compared to the averaging method. In addition, improvements of image quality metrics and 5 dB increase in the signal-to-noise ratio are attained.

Original languageEnglish (US)
Article number116009
JournalJournal of Biomedical Optics
Volume17
Issue number11
DOIs
StatePublished - Nov 2012

Fingerprint

image enhancement
Image enhancement
Optical tomography
shrinkage
wavelet analysis
Wavelet transforms
tomography
Trees (mathematics)
Image quality
eye diseases
eye movements
Eye movements
retina
Speckle
Signal to noise ratio
acquisition
signal to noise ratios

Keywords

  • image enhancement
  • ophthalmology
  • optical coherence tomography
  • wavelet transforms

ASJC Scopus subject areas

  • Biomedical Engineering
  • Biomaterials
  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

Cite this

Retinal optical coherence tomography image enhancement via shrinkage denoising using double-density dual-tree complex wavelet transform. / Chitchian, Shahab; Mayer, Markus A.; Boretsky, Adam R.; Van Kuijk, Frederik J.; Motamedi, Massoud.

In: Journal of Biomedical Optics, Vol. 17, No. 11, 116009, 11.2012.

Research output: Contribution to journalArticle

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