Cluster dot halftoning system

Details Cluster dot halftoning system Cluster dot halftoning system

H - Electricity

04

N

H04N 1/405 (2006.01) G03F 5/14 (2006.01) H04N 1/52 (2006.01)

Patent

CA 2217750

A method of constructing a screen for halftoning a digitized image is described, in which a composite screen is established. A composite LUT having m times n rank ordered threshold elements is constructed for use in halftoning digitized images. A variety of optimization techniques can be employed to improve the visual appeal of the images rendered using the composite LUT for rendering a variety of image types in single or multicolored imaging applications.

L'invention est une méthode de construction d'écrans de création de grisés dans les images numérisées dans laquelle un écran composite est créé. Un LUT composite de m X n éléments de seuil classés par ordre de rang est construit pour la création de grisés dans les images numérisées. Diverses méthodes d'optimisation peuvent être utilisées pour améliorer l'apparence d'images de types divers restituées à l'aide du LUT dans des applications monochromes ou en couleurs.

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