System for video quality prediction and related aspects
US8947538B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 31, 2011 |
| Grant date | Feb 3, 2015 |
| Priority date | — |
| Expiry date | Dec 24, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.