Methods and apparatus of video coding in 4:4:4 chroma format
US12244804B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 5, 2022 |
| Grant date | Mar 4, 2025 |
| Priority date | — |
| Expiry date | Nov 23, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/96
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electronic apparatus performs a method of coding video data. The method comprises: receiving, from the bitstream, the video data corresponding to a coding unit, wherein the coding unit is coded by intra-prediction mode or inter-prediction mode; receiving a first syntax element from the video data, wherein the first syntax element indicates whether the coding unit has been coded using adaptive color-space transform (ACT); processing the video data to generate residuals of the coding unit; in accordance with a determination based on the first syntax element that the coding unit has been coded using the ACT, performing a clipping operation that confines a dynamic range of the residuals of the coding unit within a predefined range; and applying an inverse ACT to the residuals of the coding unit after the clipping operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.