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

被引：17
|
作者：
Zhang, Anqi [1 ,3 ,4 ]
Xi, Jiefeng [1 ]
Sun, Jitao [2 ]
Li, Xingde [1 ]
机构：
[1] Johns Hopkins Univ, Dept Biomed Engn, Baltimore, MD 21205 USA
[2] Tongji Univ, Dept Math, Shanghai 200092, Peoples R China
[3] Johns Hopkins Univ, Champaign, IL 61820 USA
[4] PhotoniCare Inc, Champaign, IL 61820 USA
来源：
BIOMEDICAL OPTICS EXPRESS | 2017年 / 8卷 / 03期
关键词：
OPTICAL COHERENCE TOMOGRAPHY; SHRINKAGE; FILTER;
D O I：
10.1364/BOE.8.001721
中图分类号：
Q5 [生物化学];
学科分类号：
071010 ; 081704 ;
摘要：
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. (C) 2017 Optical Society of America
引用
收藏
页码：1721 / 1740
页数：20
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