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:
Dec. 30, 2003
Filed:
Mar. 03, 2000
Applicant:
Inventors:
Steven D. Maurer, Aloha, OR (US);
Bozidar Janko, Portland, OR (US);
Assignee:
Tektronix, Inc., Beaverton, OR (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K 9/36 ;
U.S. Cl.
CPC ...
G06K 9/36 ;
Abstract
A method of determining the blockiness period in DCT-based codecs determines the blockiness period having the maximum measurement value for each image of an input video signal. The blockiness periods having the maximum measurement values for each image are accumulated in a histogram representing the number of images at each different blockiness period. The maximum peak of the histogram represents the blockiness period induced by DCT-based codecs.