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:
Jun. 14, 2011
Filed:
Dec. 13, 2006
Ferruccio Cittadini, Paris, FR;
Jacques C. E. Pervillé, Fontenay Sous Bois, FR;
Ferruccio Cittadini, Paris, FR;
Jacques C. E. Pervillé, Fontenay Sous Bois, FR;
Oce-Techonologies B.V., Venlo, NL;
Abstract
A method for generating a halftone image includes the steps of, for each input pixel, adding a previously determined error term to the input pixel value to obtain a modified input pixel value; determining an error diffusion threshold level based on the input pixel value; applying a quantization operation to the modified input pixel value using the determined error diffusion threshold level for obtaining an output pixel value; and determining an error contribution. The error diffusion threshold level depends on a result of a comparison operation performed between the input pixel value and a threshold value selected from a set of threshold values, the selection of the threshold value being based on the position of the input pixel in the input image.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile