Video alignment and calibration for video quality measurement
US8456531B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 14, 2010 |
| Grant date | Jun 4, 2013 |
| Priority date | — |
| Expiry date | Feb 9, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30168
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Video alignment and calibration, which is needed for video quality measurement in full-reference mode, is performed continuously on the videos being measured to account for alignment parameters that may change over time. With this technique, the quality of video files and/or live video streams can be measured in full-reference mode in real-time. During video alignment, the temporal and spatial offsets, as well as any spatial, luminance or color transformations between the two videos are measured; during video calibration, the video frames are adjusted for these offsets and transformations so that the video quality can be measured correctly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.