Morphological Color Processing based on Distances. Application to Color Denoising and Enhancement by Centre and Contrast Operators

J. Angulo (France)


color mathematical morphology, color distance, vecto rial ordering, noise removal, contrast enhancement, LSH, L*a*b*


The extension of mathematical morphology operators to multi-valued functions, and in particular to color images, is neither direct nor general. In this paper is proposed a generalisation of distance-based and lexicographical-based approaches, allowing the extension of morphological op erators to color images for any color representation (e.g. RGB, LSH and L*a*b*) and for any metric distance to a reference color. The performance of these morphological color operators is illustrated by means of two applications: color denoising by the centre operator and color enhance ment by the contrast mapping.

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