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:
Feb. 03, 2015
Filed:
Mar. 31, 2011
Andrew G Davis, Woodbridge, GB;
Andrew G Davis, Woodbridge, GB;
British Telecommunications Public Limited Company, London, GB;
Abstract
A method of generating a measure of quality for a decoded form of a video signal comprises: generating a quality measure dependent on a quantizer step size parameter according to a predetermined relationship; generating a plurality of masking measures, and applying a weighting to each masking measure, wherein each masking measurement is dependent on the spatial complexity of one or more types of regions present in pictures formed by decoding the video signal. One type of region comprises an active region of a picture in a video sequence for which a prediction residual measure meets a first condition. Another type of region comprises a region of the picture in the video sequence for which the prediction residual measure meets another condition. The quality measure and the plurality of weighted quality masking measures are combined to generate a combined quality measure for the decoded form of the video signal.