Speckle reduction in optical coherence tomography images by use of a spatially adaptive wavelet filter

被引：236
作者：
Adler, DC
Ko, TH
Fujimoto, JG
机构：
[1] MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA
[2] MIT, Elect Res Lab, Cambridge, MA 02139 USA
来源：
OPTICS LETTERS | 2004年 / 29卷 / 24期
关键词：
D O I：
10.1364/OL.29.002878
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A spatially adaptive two-dimensional wavelet filter is used to reduce speckle noise in time-domain and Fourier-domain optical coherence tomography (OCT) images. Edges can be separated from discontinuities that are due to noise, and noise power can be attenuated in the wavelet domain without significantly compromising image sharpness. A single parameter controls the degree of noise reduction. When this filter is applied to ophthalmic OCT images, signal-to-noise ratio improvements of >7 dB are attained, with a sharpness reduction of <3%. (C) 2004 Optical Society of America.
引用
收藏
页码：2878 / 2880
页数：3
相关论文
共 11 条
[1]   Spatially adaptive wavelet thresholding with context modeling for image denoising [J].
Chang, SG ;
Yu, B ;
Vetterli, M .
IEEE TRANSACTIONS ON IMAGE PROCESSING, 2000, 9 (09) :1522-1531
[2]  
Choi Hyohoon, 2003, P 25 ANN INT C IEEE
[3]  
COIFMAN R, 1994, TRANSLATION INVARIAN
[4]   OPTICAL COHERENCE TOMOGRAPHY [J].
HUANG, D ;
SWANSON, EA ;
LIN, CP ;
SCHUMAN, JS ;
STINSON, WG ;
CHANG, W ;
HEE, MR ;
FLOTTE, T ;
GREGORY, K ;
PULIAFITO, CA ;
FUJIMOTO, JG .
SCIENCE, 1991, 254 (5035) :1178-1181
[5]   Speckle reduction in optical coherence tomography by "path length encoded" angular compounding [J].
Iftimia, N ;
Bouma, BE ;
Tearney, GJ .
JOURNAL OF BIOMEDICAL OPTICS, 2003, 8 (02) :260-263
[6]   Ultrahigh resolution optical coherence tomography imaging with a broadband superluminescent diode light source [J].
Ko, TH ;
Adler, DC ;
Fujimoto, JG ;
Mamedov, D ;
Prokhorov, V ;
Shidlovski, V ;
Yakubovich, S .
OPTICS EXPRESS, 2004, 12 (10) :2112-2119
[7]   Speckle reduction in optical coherence tomography by frequency compounding [J].
Pircher, M ;
Götzinger, E ;
Leitgeb, R ;
Fercher, AF ;
Hitzenberger, CK .
JOURNAL OF BIOMEDICAL OPTICS, 2003, 8 (03) :565-569
[8]   Image processing techniques for noise removal, enhancement and segmentation of cartilage OCT images [J].
Rogowska, J ;
Brezinski, ME .
PHYSICS IN MEDICINE AND BIOLOGY, 2002, 47 (04) :641-655
[9]   Image enhancement based on a nonlinear multiscale method [J].
Sattar, F ;
Floreby, L ;
Salomonsson, G ;
Lovstrom, B .
IEEE TRANSACTIONS ON IMAGE PROCESSING, 1997, 6 (06) :888-895
[10]   Speckle in optical coherence tomography [J].
Schmitt, JM ;
Xiang, SH ;
Yung, KM .
JOURNAL OF BIOMEDICAL OPTICS, 1999, 4 (01) :95-105
12