Reduced worst-case context-coded bins in video compression with parity hiding
US9088769B2 · kind B2 · utility
3Cited by
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27Claims
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Key dates
| Filing date | Jun 28, 2012 |
| Grant date | Jul 21, 2015 |
| Priority date | — |
| Expiry date | Dec 13, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/91
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods and devices for reconstructing coefficient levels from a bitstream of encoded video data for a coefficient group in a transform unit. Parity hiding is used to signal the parity of the upper left coefficient of the coefficient group. Based on the parity, either the significant coefficient flag or the greater-than-one flag is encoded/decoded for that coefficient, but not both. The greater-than-one flag is encoded/decoded irrespective of whether a maximum number of greater-than-one flags have been encoded/decoded with respect to the other coefficients in the coefficient group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.