Transposing a block of transform coefficients, based upon an intra-prediction mode
US9813737B2 · kind B2 · utility
2Cited by
4References
19Claims
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Key dates
| Filing date | Sep 19, 2013 |
| Grant date | Nov 7, 2017 |
| Priority date | — |
| Expiry date | Jul 20, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/91
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods and devices for video coding are described. If an intra-prediction mode to be used in encoding a block of residual data is in a specific predetermined class, e.g., the horizontal class, then at least a portion of a quantized transformed block of residual data is transposed during encoding. Likewise, if an intra-prediction mode that was used to generate an encoded block of residual data is in such a class, then at least a portion of an entropy-decoded block of residual data is transposed during decoding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.