Picture encoding method, picture decoding method, encoder, decoder and storage medium
US11146798B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2021 |
| Grant date | Oct 12, 2021 |
| Priority date | — |
| Expiry date | Mar 24, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Picture coding and decoding methods, an encoder, a decoder and a storage medium are provided. The encoder, before performing coding processing according to a matrix-based intra prediction (MIP) mode, sets initial right shift parameters corresponding to different sizes and different MIP mode numbers as an uniform offset parameter, the offset parameter indicating a number of right shifting bits of a predicted value, and when performing coding processing according to the MIP mode, performs coding processing according to the offset parameter. The decoder, before performing decoding processing according to an MIP mode, sets initial right shift parameters corresponding to different sizes and different MIP mode numbers as an uniform offset parameter, the offset parameter indicating a number of right shifting bits of a predicted value, and when performing decoding processing according to the MIP mode, performs decoding processing according to the offset parameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.