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:
Mar. 26, 2002
Filed:
Jul. 25, 1998
John W. Edwards, Lake Oswego, OR (US);
Steven D. Maurer, Aloha, OR (US);
Tektronix, Inc., Beaverton, OR (US);
Abstract
A picture quality assessment method based upon spatial location with or without subsampling within the picture divides the video picture into a plurality of arbitrarily sized, geometric segments. A segment weighting map is generated that provides one value for “safe picture” segments of the video picture and another value for the other segments. Optionally one or more of the segments may be subsampled to reduce processing time for realtime applications. The video picture on a segment basis is compared with a corresponding test video picture using a picture quality assessment algorithm to generate a quality error value for each segment. The quality error values are weighted according to the segment weighting map, and on an error display the weighted quality error values are displayed.