A two-pass median-like filter for impulse noise removal in multi-channel images

• Autorzy: Grabowski S. , Bieniecki W.
• Języki publikacji: EN

Abstrakty

EN

We propose a two-pass median filter for impulse noise suppression in color images. The first pass is our previously presented algorithm, PNN-VMF [2]. 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 harm (e.g., blurring edges) resulting from excessive filtering. The effectiveness of the algorithm has been experimentally verified on 15 standard images.

Słowa kluczowe

EN

filtering theory; image colour analysis; image reconstruction; impulse noise; median filter; two-pass median filter; first pass filtering; second pass filtering; multichannel images; Primum Non Nocere Vector Median Filter

PL

teoria filtracji; analiza koloru obrazu; rekonstrukcja obrazu; zakłócenie impulsowe

• Wydawca: Instytut Telekomunikacji i Informatyki Uniwersytetu Technologiczno-Przyrodniczego w Bydgoszczy
• Czasopismo: Image Processing & Communications
• Rocznik: 2003
• Tom: Vol. 9, no 3-4
• Strony: 19--26
• Opis fizyczny: Bibliogr. 7 poz., rys., wykr.

Twórcy

autor

Grabowski S.

• Technical University of Lódź Computer Engineering Dept. Al. Politechniki 11, 90-924 Lódź

autor

Bieniecki W.

• Technical University of Lódź Computer Engineering Dept. Al. Politechniki 11, 90-924 Lódź

Bibliografia

• [1] J. Astola, P. Haavisto, Y. Neuvo, Vector median filters, Proceedings oj the IEEE, vol. 78 no. 4, pp. 678-689, 1990.
• [2] Sz. Grabowski, W. Bieniecki, Usuwanie szumu impulsowego w obrazach kolorowych przy użyciu zmodyfikowanego filtru medianowego, X Konferencja" Sieci i Systemy Informatyczne" (10th Conference "Networks and IT Systems"), pp. 515-523, Lódź, Oct. 2002 (in Polish).
• [3] D.G. Karakos, P.E. Trahanias, Combining vector median and vector directional filters: The directional-distance filters, in Proceedings of the IEEE Conference on Image Processing ICIP-95, pp. 171-174, 1995.
• [4] c.s. Regazzoni, A. Teschioni, A New Appro ach to Vector Median Filtering Based on Space Filling Curves, IEEE Transactions on Image Processing, vol. 6, pp. 1025-1037, 1997.
• [5] B. Smołka, M. Szczepański, K.N. Plataniotis, A.N. Venetsanopoulos, New technique of impulse noise suppression in color images, II Konferencja "Komputerowe Systemy Rozpoznawania" KOSYR2001 (2nd Conference on Computer Recognition Systems), pp. 225-232, Miłków k/Karpacza, 2001.
• [6] P.E. Trahanias, A.N. Venetsanapoulos, Vector directional filters: A new class of multichannel image processing filters IEEE Tmnsactions on Image Processing, vol. 2, pp. 528-534, 1993.
• [7] M.I. Vardavoulia, I. Andreadis, P. Tsalides, A ew Vector Median Filter for Colaur Image Processing, Patiern Recognition Letters, vol. 22, no. 6-7, pp. 675-689, 2001.