Noise Redistribution and 3D Shearlet Filtering for Speckle Reduction in Optical Coherence Tomography

Yan Hu, Jianlong Yang, Jun Cheng, Jiang Liu

Research output: Chapter in Book/Conference proceedingConference contributionpeer-review

3 Citations (Scopus)

Abstract

Optical coherence tomography (OCT) is a micrometer-resolution, cross-sectional imaging modality for biological tissue. It has been widely applied for retinal imaging in ophthalmology. However, the large speckle noise affects the analysis of OCT retinal images and their diagnostic utility. In this article, we present a new speckle reduction algorithm for 3D OCT images. The OCT speckle noise is approximated as Poission distribution, which is difficult to be removed for its signal-dependent characteristic. Thus our algorithm is consisted by two steps: first, a variance-stabilizing transformation, named Anscombe transformation, is applied to redistribute the multiplicative speckle noise into an additive Gaussian noise; then the transformed data is decomposed and filtered in 3D Shearlet domain, which provides better representation of the edge information of the retinal layers than wavelet and curvelet. The proposed method is evaluated through the three parameters using high-definition B-scans as the ground truth. Quantitative experimental results show that our method gives out the best evaluation parameters, and highest edge contrast, compared with state-of-the-art OCT denoising algorithms.

Original languageEnglish
Title of host publicationISBI 2020 - 2020 IEEE International Symposium on Biomedical Imaging
PublisherIEEE Computer Society
Pages1565-1569
Number of pages5
ISBN (Electronic)9781538693308
DOIs
Publication statusPublished - Apr 2020
Externally publishedYes
Event17th IEEE International Symposium on Biomedical Imaging, ISBI 2020 - Iowa City, United States
Duration: 3 Apr 20207 Apr 2020

Publication series

NameProceedings - International Symposium on Biomedical Imaging
Volume2020-April
ISSN (Print)1945-7928
ISSN (Electronic)1945-8452

Conference

Conference17th IEEE International Symposium on Biomedical Imaging, ISBI 2020
Country/TerritoryUnited States
CityIowa City
Period3/04/207/04/20

Keywords

  • Anscombe Transform
  • Image Denoise
  • Optical Coherence Tomography
  • Poission Distribution
  • Shear-let Filter

ASJC Scopus subject areas

  • Biomedical Engineering
  • Radiology Nuclear Medicine and imaging

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