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:
Sep. 28, 2004
Filed:
Apr. 17, 2002
Applicant:
Inventors:
Ke-Chiang Chu, Saratoga, CA (US);
Jian Lu, Santa Clara, CA (US);
Yu Tina Tian, Stanford, CA (US);
Hsi-Jung Wu, Mountain View, CA (US);
Assignee:
Apple Computer, Inc., Cupertino, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G06K 9/40 ;
U.S. Cl.
CPC ...
G06K 9/40 ;
Abstract
A system and method using edge processing to remove blocking artifacts comprises an edge processor having an image converter for building an edge representation of a received image, a statistics analyzer for compiling a histogram containing edge intensities of the edge representation, a reference calculator for using the histogram to compute reference values corresponding to the blocking artifacts and an artifact remover for identifying and removing the blocking artifacts using the computed reference values.