MIXED IMAGE DE-NOISING METHOD OF BAYESIAN ESTIMATION AND WAVELET BASED ON ALPHA-STABLE DISTRIBUTION

被引：0

作者：

Wang, Zhijian ^{[1
]}

Hu, Xuelong ^{[1
,2
]}

Li, Cheng ^{[3
]}

Wang, Liping ^{[1
]}

机构：

[1] Yangzhou Univ, Sch Informat Engn, Yangzhou 225009, Jiangsu, Peoples R China

[2] Nanjing Univ Posts & Telecommun, Jiangsu Prov Key Lab Image Proc & Image Commun, Nanjing 210003, Peoples R China

[3] Yangzhou Univ, Clin Med Coll 2, Yangzhou Peoples Hosp 1, Yangzhou 225001, Jiangsu, Peoples R China

来源：

2008 INTERNATIONAL CONFERENCE ON NEURAL NETWORKS AND SIGNAL PROCESSING, VOLS 1 AND 2 | 2007年

关键词：

Fractional lower order statistic (FLOS); alpha-stable distribution; Bayesian estimation; Threshold detection;

D O I：

暂无

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

This paper introduces a new kind of recovery method which is the combination of Bayesian estimation and wavelet threshold. Wavelet coefficients of signals show strong characteristics of the non-Gauss statistics, its probability density function can be modeled by alpha-stable priori distribution. This paper uses Bayesian estimation to obtain the low frequency coefficients, and deals with high frequency coefficients with the wavelet soft threshold, then restore signal by wavelet inverse transform. Bayesian estimation well retains the marginal information of signals, but the signal is still not very smooth recovery and wavelet soft threshold can maintain smooth characteristic. The mixed noise elimination methods of Bayesian estimation and wavelet enhance the peak SNR much greater than wavelet threshold, which has better recovery effect.

引用

页码：124 / +

页数：2

共 11 条

[1]

ACHIM A, 2001, P 5 IEEE EURASIP BIE, P1

[2] 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

[3] Alpha-Stable Modeling of Noise and Robust Time-Delay Estimation in the Presence of Impulsive Noise [J].

Georgiou, Panayiotis G. ;

Tsakalides, Panagiotis ;

Kyriakakis, Chris .

IEEE TRANSACTIONS ON MULTIMEDIA, 1999, 1 (03) :291-301

[4] Analytic alpha-stable noise modeling in a Poisson field of interferers or scatterers [J].

Ilow, J ;

Hatzinakos, D .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 1998, 46 (06) :1601-1611

[5] Wavelet threshold estimators for data with correlated noise [J].

Johnstone, IM ;

Silverman, BW .

JOURNAL OF THE ROYAL STATISTICAL SOCIETY SERIES B-STATISTICAL METHODOLOGY, 1997, 59 (02) :319-351

[6]

Qiu T., 2004, STAT SIGNAL PROCESSI

[7]

RAMON F, 2005, IEEE T SIGNAL PROCES, V53, P977

[8] SIGNAL-PROCESSING WITH FRACTIONAL LOWER ORDER MOMENTS - STABLE PROCESSES AND THEIR APPLICATIONS [J].

SHAO, M ;

NIKIAS, CL .

PROCEEDINGS OF THE IEEE, 1993, 81 (07) :986-1010

[9] Evaluation of fractional, lower-order statistics-based detection algorithms on real radar sea-clutter data [J].

Tsihrintzis, GA ;

Nikias, CL .

IEE PROCEEDINGS-RADAR SONAR AND NAVIGATION, 1997, 144 (01) :29-37

[10] On time-dependent wavelet denoising [J].

Vidakovic, B ;

Lozoya, CB .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 1998, 46 (09) :2549-2554

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