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. 03, 1992
Filed:
Oct. 10, 1989
Applicant:
Inventors:
Robert Klein, Farmington, MI (US);
Antonette M Roppo, West Bloomfield, MI (US);
David C Williams, Ann Arbor, MI (US);
Assignee:
Unisys Corporation, Blue Bell, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K / ;
U.S. Cl.
CPC ...
382 51 ; 382 18 ; 382 22 ;
Abstract
Apparatus for processing digitized images which contain useful image formation data and background features a background supression scheme used to convert each pixel value to preselected values in a smaller range in order to facilitate data processing such as compression and scaling. Provision is made for generating an adaptive or dynamic threshold value, as well as a much more stable background reference threshold value.