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:
Oct. 25, 2022
Filed:
Jan. 11, 2019
Hewlett-packard Development Company, L.p., Spring, TX (US);
Purdue Research Foundation, West Lafayette, IN (US);
Jan Allebach, Boise, ID (US);
Richard E. Maggard, Boise, ID (US);
Renee J. Jessome, Boise, ID (US);
Mark Q. Shaw, Boise, ID (US);
Runzhe Zhang, West Lafayette, IN (US);
Hewlett-Packard Development Company, L.P., Spring, TX (US);
Purdue Research Foundation, West Lafayette, IN (US);
Abstract
In an example method, an image of a printed document is descreened. The descreened image is separated into blocks. A smooth area of the descreened image is selected based on an averaging of localized color distance values of pixels in each of the blocks. A streak in a block of the smooth area is detected in response to detecting that a magnitude of a color distance projection of the block exceeds a threshold value.