TY - JOUR
T1 - Pixel-based speckle adjustment for noise reduction in fourier-domain OCT images
AU - Zhang, Anqi
AU - Xi, Jiefeng
AU - Sun, Jitao
AU - Li, Xingde
N1 - Funding Information:
National Institutes of Health (R01 CA153023 and R01 HL121788); The Coulter Foundation. The authors acknowledge the help with the contourlet program from Dr. Kenneth K. Y. Wong and Mr. Jianbing Xu at the Department of Electrical and Electronic Engineering, the University of Hong Kong.
Publisher Copyright:
© 2017 Optical Society of America.
PY - 2017/3/1
Y1 - 2017/3/1
N2 - 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.
AB - 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.
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U2 - 10.1364/BOE.8.001721
DO - 10.1364/BOE.8.001721
M3 - Article
C2 - 28663860
AN - SCOPUS:85016162010
SN - 2156-7085
VL - 8
SP - 1721
EP - 1730
JO - Biomedical Optics Express
JF - Biomedical Optics Express
IS - 3
M1 - #283889
ER -