Method and apparatus for video coding
US7580458B2 · kind B2 · utility
1Cited by
9References
6Claims
0Family size
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Key dates
| Filing date | Aug 12, 2002 |
| Grant date | Aug 25, 2009 |
| Priority date | — |
| Expiry date | Jan 16, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In uniform superposition of two predictions toward a weighted superposition, such as in coding B frames, weighting is based on reliability of a reference picture used for determination of the prediction. Since there is a relationship between the reliability and the respective quantization parameter, coupling to the quantization parameter that is also known in the receiver also can be effected advantageously.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.