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<p><b>Abstract</b>—In this paper, a framework for diffusion of color images is presented. The method is based on the theory of thermodynamics of irreversible transformations which provides a suitable basis for designing correlations between the different color channels. More precisely, we derive an equation for color evolution which comprises a purely spatial diffusive term and a nonlinear term that depends on the interactions among color channels over space. We apply the proposed equation to images represented in several color spaces, such as RGB, CIELAB, Opponent colors, and IHS.</p>
Color images, scale-space, vector-valued diffusion.

M. Ferraro, T. Caelli and G. Boccignone, "Generalized Spatio-Chromatic Diffusion," in IEEE Transactions on Pattern Analysis & Machine Intelligence, vol. 24, no. , pp. 1298-1309, 2002.
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