Method and apparatus for constructing efficient codes for Wyner-Ziv video compression systems
US7233269B1 · kind B1 · utility
15Cited by
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20Claims
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Key dates
| Filing date | Jun 30, 2006 |
| Grant date | Jun 19, 2007 |
| Priority date | — |
| Expiry date | Jun 30, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus are described for constructing efficient Slepian-Wolf codes for inputs that do not have uniform probability distributions, and for channels which are not symmetric. Whereas conventional Wyner-Ziv video compression systems assume symmetrical probability distributions and ignore the marginal distribution component, the invention incorporates the marginal distribution component by combining the marginal distribution and conditional distributions as input to a transform that generates a symmetrical output, which is then fed into the conventional density evolution method.
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