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:
Jul. 02, 1991
Filed:
Oct. 10, 1989
Applicant:
Inventors:
Robert Klein, Farmington, 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 50 ; 382 52 ; 382 54 ;
Abstract
Apparatus for filtering digital image data which is initially presented in the form of an array of multi-bit pixels having plural scale values. Threshold means are provided for converting the scale value pixels to an array of binary pixels in which each pixel is associated with either background or image formation data. Patterns of neighboring pixels are examined and used to transform a center pixel in the window as a function of the detected pattern in a manner to remove isolated spots or voids from the image data.