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. 11, 1996
Filed:
Jan. 04, 1994
Applicant:
Inventor:
William C Naylor, Jr, Mount Kuring-gai, AU;
Assignee:
Canon Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
345149 ; 358456 ; 358457 ;
Abstract
A process of producing large dither matrices suitable in use in halftoning images is disclosed. This process includes forming an objective function based on the placement of the dither values within the matrix and optimizing the objective function so as to produce an improved matrix. The preferred optimizations process includes the use of simulated annealing with additional optimizations of the simulated annealing process being disclosed.