The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 19, 2015
Filed:
Mar. 05, 2013
Oce Technologies B.v., Venlo, NL;
Carolus E. P. Gerrits, Velden, NL;
OCE-TECHNOLOGIES B.V., Venlo, NL;
Abstract
A method for image processing a digital color image uses a single array of threshold values in a halftoning process if a total density value, which is found adding up the color density value for each of the process colors of a pixel, is lower than a predetermined density threshold. However, when the total density value exceeds the density threshold, the individual color density values are split in a basic part and an excess part, the basic parts adding up to the predetermined density threshold. In the halftoning process the basic parts still use the single array of threshold values, but the excess parts use uncorrelated arrays of threshold values that are associated with each individual process color. This provides for a balance between graininess at low color density and registration independent color rendering at high color density.