Video quality measurement
US8254438B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 7, 2006 |
| Grant date | Aug 28, 2012 |
| Priority date | — |
| Expiry date | Dec 1, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
This application is concerned with a non-intrusive video quality measurement method, in particular where the video signal having: an original form; encoded form in which video signal has been encoded using a compression algorithm utilizing a variable quantiser step size such that the encoded signal includes a quantiser step size parameter; and, a decoded form in which the encoded video signal has been at least in part reconverted to the original form. The method comprises the steps of: a) generating a first quality measure which is a function of said quantiser step size parameter; b) generating a second quality measure which is a function of the spatial complexity of the frames represented by the video signal in the decoded form; and, c) combining the first and second measures in order to obtain an estimate for the subjective visual quality of the decoded video.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.