Methods and systems for motion vector derivation at a video decoder
US9654792B2 · kind B2 · utility
24Cited by
33References
18Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 25, 2009 |
| Grant date | May 16, 2017 |
| Priority date | — |
| Expiry date | Dec 6, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/577
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Method and apparatus for deriving a motion vector at a video decoder. A block-based motion vector may be produced at the video decoder by utilizing motion estimation among available pixels relative to blocks in one or more reference frames. The available pixels could be, for example, spatially neighboring blocks in the sequential scan coding order of a current frame, blocks in a previously decoded frame, or blocks in a downsampled frame in a lower pyramid when layered coding has been used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.