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:
Aug. 05, 2003
Filed:
Oct. 30, 1998
Roy L. Adler, Chappaqua, NY (US);
Marco Martens, Chappaqua, NY (US);
Joan L. Mitchell, Cortlandt Manor, NY (US);
Nenad Rijavec, Longmont, CO (US);
Robert H. Risch, Ossining, NY (US);
Charles P. Tresser, Mamaroneck, NY (US);
Chai W. Wu, Poughquag, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method and apparatus for halftoning digital images renders color data subject to constraints on the number of colorants which can be deposited on a single pixel and constraints on consecutive pixels rendered with the same color. The color data to be rendered is mapped into a second data set in an achievable color gamut space. Then, using a digital halftoning method in the achievable color gamut space, the second data set is rendered, so that the constraints are satisfied.