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1. WO1991006174 - COLOR DIGITAL HALFTONING WITH VECTOR ERROR DIFFUSION

Publication Number WO/1991/006174
Publication Date 02.05.1991
International Application No. PCT/US1990/005491
International Filing Date 01.10.1990
Chapter 2 Demand Filed 06.05.1991
IPC
H04N 1/52 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
1Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
46Colour picture communication systems
52Circuits or arrangements for halftone screening
CPC
H04N 1/52
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
1Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
46Colour picture communication systems
52Circuits or arrangements for halftone screening
Applicants
  • EASTMAN KODAK COMPANY [US]/[US]
Inventors
  • SULLIVAN, James, R.
  • MILLER, Rodney, L.
  • WETZEL, Thomas, J.
Agents
  • ARNDT, Dennis, R.
Priority Data
419,55910.10.1989US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) COLOR DIGITAL HALFTONING WITH VECTOR ERROR DIFFUSION
(FR) NUANÇAGE NUMERIQUE DE COULEURS PAR DIFFUSION D'ERREUR VECTORIELLE
Abstract
(EN) A halftoning method for creating a color binary image from a continuous tone color image or computer generated graphics signal is improved by diffusing color vector error and by including the visual color blur functions in the recursive error propagation algorithm so that perceived color vector rather than binary color error is propagated.
(FR) On a amélioré un procédé de nuançage permettant de créer une image binaire en couleurs à partir d'une image en couleurs aux nuances continues ou à partir d'un signal graphique de synthèse, par diffusion d'une erreur vectorielle couleur et par inclusion des fonctions visuelles du flou de couleur dans l'algorithme de propagation d'erreur récursive, de sorte que le vecteur de couleur perçue est propagé plutôt que l'erreur de couleur binaire.
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