Constrained position dependent intra prediction combination (PDPC)
US10674165B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2017 |
| Grant date | Jun 2, 2020 |
| Priority date | — |
| Expiry date | Aug 8, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/117
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A second level intra prediction mode can be combined with one or more of sixty-seven JVET intra prediction modes during encoding of a coding unit in a video bitstream. Embodiments include making a position dependent intra prediction combination (PDPC) mode available as the second level intra prediction mode. In embodiments, when a PDPC (position dependent intra prediction combination) mode is enabled, the second level intra prediction is combined with one of the 67 selected intra predictor modes. In embodiments, the PDPC mode is only enabled or available for a predetermined subset of intra prediction modes (out of 67 possible modes), in order to reduce encoder complexity and potentially improve coding efficiency. The PDPC mode may be identifies as enabled or available by a list of modes or signaling in the video bitstream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.