DocumentCode :
3308745
Title :
DCT Local Adaptive Filtering of Images Corrupted by Fluctuative Noise with a Priori Unknown Statistical Properties
Author :
Lukin, Vladimir V. ; Fevralev, Dmitriy V. ; Zelensky, Alexander A. ; Pogrebnyak, Oleksiy B. ; Kildishev, Alexander V.
Author_Institution :
Dept. of Transmitters, Nat. Aerosp. Univ., Kharkov
Volume :
1
fYear :
2007
fDate :
25-30 June 2007
Firstpage :
470
Lastpage :
472
Abstract :
A DCT based locally adaptive filter has been proposed and applied for processing of real and imaginary components of bispectrum for solving a problem of unknown signal shape (waveform) reconstruction. The bispectrum is a 2-D complex function and in its real and imaginary components a strongly non-stationary noise is present. Thus, the filter designed can be also effectively applied to processing different kind of images for which non-stationary noise with a priori unknown local statistical properties is present. The modifications of DCT based filters have been successfully used for removal of pure multiplicative, speckle and film-grain noise.
Keywords :
adaptive filters; discrete cosine transforms; image denoising; spectral analysis; statistical analysis; 2D complex function; DCT based filters; bispectrum processing; film-grain noise; filter design; fluctuative noise; image corruption; local adaptive filtering; multiplicative noise; nonstationary noise; signal shape reconstruction; speckle noise; waveform reconstruction; Adaptive filters; Circuit noise; Discrete cosine transforms; Electronic mail; Filtering; Noise reduction; Radar imaging; Statistics; Transmitters; Ultrasonic imaging;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves and Workshop on Terahertz Technologies, 2007. MSMW '07. The Sixth International Kharkov Symposium on
Conference_Location :
Kharkov
Print_ISBN :
1-4244-1237-4
Type :
conf
DOI :
10.1109/MSMW.2007.4294700
Filename :
4294700
Link To Document :
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