Enhancement of multiple color images without color...

H - Electricity – 04 – N

Patent

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H04N 1/387 (2006.01) G06T 5/20 (2006.01) H04N 1/58 (2006.01)

Patent

CA 2128577

A method for enhancing the contour fidelity of printed images of two ormore colors is described, which includes obtaining a digital representation of the color image and finding color separations of each color. Each color separation is enhanced by a single set of inverse symmetrical templates, the set including templates in which the second template is always the inverse of the first, and the third and fourth templates are 180 degree rotations of the first two. The resulting smoothed color separations are recombined into an enhanced image without separation error.

Description d'une méthode pour améliorer la fidélité du contour d'images imprimées en deux couleurs ou plus. La méthode consiste à obtenir une représentation numérique de l'image en couleurs et à trouver les sélections pour chaque couleur. On améliore chaque sélection de couleurs au moyen d'un simple ensemble de modèles symétriques inverses. L'ensemble comporte des modèles où le second modèle est toujours l'inverse du premier, tandis que le troisième et le quatrième modèles sont des rotations de 180 degrés des deux premiers. Les sélections de couleurs adoucies résultantes sont recombinées en une image améliorée sans erreur de sélection.

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