Pixel-based speckle adjustment for noise reduction in fourier-domain OCT images

Anqi Zhang, Jiefeng Xi, Jitao Sun, Xingde Li

Research output: Contribution to journalArticlepeer-review

Abstract

Speckle resides in OCT signals and inevitably effects OCT image quality. In this work, we present a novel method for speckle noise reduction in Fourier-domain OCT images, which utilizes the phase information of complex OCT data. In this method, speckle area is pre-delineated pixelwise based on a phase-domain processing method and then adjusted by the results of wavelet shrinkage of the original image. Coefficient shrinkage method such as wavelet or contourlet is applied afterwards for further suppressing the speckle noise. Compared with conventional methods without speckle adjustment, the proposed method demonstrates significant improvement of image quality.

Original languageEnglish (US)
Article number#283889
Pages (from-to)1721-1730
Number of pages10
JournalBiomedical Optics Express
Volume8
Issue number3
DOIs
StatePublished - Mar 1 2017

ASJC Scopus subject areas

  • Biotechnology
  • Atomic and Molecular Physics, and Optics

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