Title :
A two-pass median filter for impulse noise attenuation in color images
Author :
Grabowski, Szymon ; Bieniecki, Wojciech
Author_Institution :
Comput. Eng. Dept., Tech. Univ. of Lodz, Poland
Abstract :
We propose a two-pass median filter for impulse noise suppression in color images. The first pass is our previously presented algorithm, PNN-VMF. The second pass routine is chosen dynamically on the basis of the number of pixel modifications performed by the first pass filtering. Such an approach is likely to avoid barm (blurring edges etc.) due to excessive filtering. The effectiveness of the algorithm has been experimentally verified.
Keywords :
filtering theory; image colour analysis; image denoising; image reconstruction; impulse noise; mean square error methods; median filters; color images; first pass filtering; image reconstruction; impulse noise attenuation; multichannel images; noise-removing filter; normalised mean square error; number of pixel modifications; primum non nocere vector median filter; second pass filtering; two-pass median filter; Attenuation; Color; Colored noise; Concrete; Filters; Gaussian noise; Noise reduction; Pixel; Polynomials;
Conference_Titel :
CAD Systems in Microelectronics, 2003. CADSM 2003. Proceedings of the 7th International Conference. The Experience of Designing and Application of
Print_ISBN :
966-553-278-2
DOI :
10.1109/CADSM.2003.1254996
