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Adaptive Marginal Median Filter for Colour Images
Instituto Universitario de Matemàtica Puray Aplicada, Universidad Politécnica de Valencia, Camino de Vera s/n, 46022 Valencia, Spain
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Received: 5 January 2011; in revised form: 3 February 2011 / Accepted: 10 March 2011 / Published: 15 March 2011
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: robust filter; color image filter; vector median filter
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Morillas, S.; Gregori, V.; Sapena, A. Adaptive Marginal Median Filter for Colour Images. Sensors 2011, 11, 3205-3213.
Morillas S, Gregori V, Sapena A. Adaptive Marginal Median Filter for Colour Images. Sensors. 2011; 11(3):3205-3213.
Morillas, Samuel; Gregori, Valentín; Sapena, Almanzor. 2011. "Adaptive Marginal Median Filter for Colour Images." Sensors 11, no. 3: 3205-3213.