Video compression using multiple variable length coding processes for multiple classes of transform coefficient blocks
US7454073B2 · kind B2 · utility
6Cited by
89References
95Claims
0Family size
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Key dates
| Filing date | Aug 3, 2004 |
| Grant date | Nov 18, 2008 |
| Priority date | — |
| Expiry date | Dec 22, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/147
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus to variable length code an ordered series of quantized transform coefficients of an image block. The method classifies the series into one of a plurality of classes. Each class has a corresponding coding process that is applicable to the statistical distribution of the coefficients in the series. The series is coded according to the particular corresponding coding process of the class of the classifying.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.