Narrow band, anisotropic stochastic halftone patterns and...

Details Narrow band, anisotropic stochastic halftone patterns and... Narrow band, anisotropic stochastic halftone patterns and...

H - Electricity

04

N

H04N 1/405 (2006.01) H04N 1/52 (2006.01)

Patent

CA 2368983

A stochastic halftone pattern has been invented which has a narrow band power spectrum due to the incorporation of a dot growth process. The narrow band power spectrum may be matched to the resolution characteristics of specific printers, resulting in smoother printed halftone textures. The spectrum of a halftone pattern may be made anisotropic (angularly dependent), helping to de- couple sets of patterns for color printing with reduced color noise or mottle.

L'invention concerne un modèles simili stochastique présentant un spectre de puissance de bande étroite en raison du processus de croissance d'un point de trame. Le spectre de puissance peut coïncider avec les caractéristiques de résolution d'imprimantes spécifiques ce qui peremt d'obtenir des textures simili imprimées plus lisses. Le spectre d'un modèle simili peut devenir anisotrope (dépendant d'un angle) afin de découpler les jeux de modèles pour l'impression couleur à moindre repérage défectueux et jaspage.

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