Chroma processing for video encoding and decoding
US11843791B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2020 |
| Grant date | Dec 12, 2023 |
| Priority date | — |
| Expiry date | Nov 28, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/82
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Encoding or decoding picture information can involve determining a first scaling factor varying with a first granularity to scale a chroma prediction residual associated with chroma information included in the picture information; determining a second scaling factor varying with a second granularity finer than the first granularity; scaling the chroma prediction residual based on a combination of the first scaling factor and the second scaling factor to provide a scaled chroma prediction residual with the second granularity; and encoding or decoding at least a portion of the picture information based on the scaled chroma prediction residual.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.