Work

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

Year: 2017

Type: article

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.

Source: Biomedical Optics Express

DOI: 10.1364/boe.8.001721

Authors: Anqi Zhang, Jiefeng Xi, Jitao Sun, Xingde Li

Institutions: Johns Hopkins University, Tongji University

Language: English

Topic: Optical Coherence Tomography Applications

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,913

Funders: National Institutes of Health, National Heart, Lung, and Blood Institute, National Cancer Institute