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:
May. 01, 2018
Filed:
Dec. 15, 2011
Applicants:
Fan Zhang, Hubei, CN;
Ning Liao, Beijing, CN;
Kai Xie, Beijing, CN;
Zhibo Chen, Beijing, CN;
Inventors:
Assignee:
THOMSON Licensing, Issy-les-Moulineaux, FR;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N 7/12 (2006.01); H04N 17/00 (2006.01); H04N 19/176 (2014.01); H04N 19/124 (2014.01); H04N 19/154 (2014.01);
U.S. Cl.
CPC ...
H04N 17/004 (2013.01); H04N 19/124 (2014.11); H04N 19/154 (2014.11); H04N 19/176 (2014.11);
Abstract
Accuracy and efficiency of video quality measurement are major problems to be solved. According to the invention, a method for accurately predicting video quality uses a rational function of the quantization parameter QP, which is corrected by a correction function that depends on content unpredictability CU. Exemplarily, the correction function is a power function of the CU. Both QP and CU can be computed from the video elementary stream, without full decoding the video. This ensures high efficiency.