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:
Mar. 12, 1996
Filed:
Mar. 30, 1994
Applicant:
Inventors:
Steven L Lidke, Brooklyn Park, MN (US);
Reed R Esau, Burnsville, MN (US);
Assignee:
Lasermaster Corporation, Eden Prairie, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K / ;
U.S. Cl.
CPC ...
382270 ; 382293 ; 358456 ;
Abstract
Pixels in a grayscale image are identified for coalescing based on a corresponding value in a threshold matrix. This threshold matrix value is then used to determine both the color and number of pixels to be coalesced at this location. Grayscale pixels are then coalesced based on pixels which will ultimately be the same color as the identified pixel. The coalesced grayscale image is then compared on a pixel-by-pixel basis to corresponding values in the threshold matrix to determine a halftone image.