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. 08, 1986
Filed:
Feb. 21, 1984
Joan M Bellinghausen, Chapel Hill, NC (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A process is described for identifying those pels in a gray scale image which are candidates for vertical filtering before the image is thresholded to binary or black/white pel values. The vertical neighbor pels of a pel below a run end point are examined to determine whether their gray scale values fall within the same range. If they do, the horizontal neighbors of the current pel are examined to see whether their gray scale values fall in different ranges. If they do, the pel is vertically filtered by adjusting its gray scale value as a function of the differences between its value and the values of its vertical neighbors. Because only selected pels are vertically filtered, the process can be carried out with a general purpose microprocessor rather than a special purpose parallel processor.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile