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Sensors (Basel). 2011;11(3):3205-13. doi: 10.3390/s110303205. Epub 2011 Mar 15.

Adaptive marginal median filter for colour images.

Author information

1
Instituto Universitario de Matemática Puray Aplicada, Universidad Politécnica de Valencia, Camino de Vera s/n, 46022 Valencia, Spain. smorillas@mat.upv.es

Abstract

This paper describes a new filter for impulse noise reduction in colour images which is aimed at improving the noise reduction capability of the classical vector median filter. The filter is inspired by the application of a vector marginal median filtering process over a selected group of pixels in each filtering window. This selection, which is based on the vector median, along with the application of the marginal median operation constitutes an adaptive process that leads to a more robust filter design. Also, the proposed method is able to process colour images without introducing colour artifacts. Experimental results show that the images filtered with the proposed method contain less noisy pixels than those obtained through the vector median filter.

KEYWORDS:

color image filter; robust filter; vector median filter

PMID:
22163794
PMCID:
PMC3231642
DOI:
10.3390/s110303205
[Indexed for MEDLINE]
Free PMC Article

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