Methods and devices for coding and decoding a data stream representative of at least one image
US11394964B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 2019 |
| Grant date | Jul 19, 2022 |
| Priority date | — |
| Expiry date | Jun 18, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Coding and decoding methods for coding and decoding a coded data stream representing at least one image split into blocks. The method includes, for a current block, determining if the current block is coded according to an intra coding mode or another coding mode, the intra coding mode using an intra prediction mode selected from a group of intra prediction modes, according to an intra prediction mode associated with a neighbouring block of the current block. When coded according to the intra coding mode, an intra prediction mode in the group is determined for the current block, according to an intra prediction mode associated with a previously decoded block of the image. The current block is decoded according to the determined intra prediction mode associated with the current block. When coded according to the other coding mode, the current block is decoded according to the other coding mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.