Method and apparatus for determining chroma quantization parameters when using separate coding trees for luma and chroma
US12177446B2 · kind B2 · utility
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Key dates
| Filing date | Sep 19, 2019 |
| Grant date | Dec 24, 2024 |
| Priority date | — |
| Expiry date | Sep 19, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/96
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A decoding method is disclosed. A quantization parameter of at least one luma block is obtained. The at least one luma block comprises a luma sample co-located with at least one chroma sample selected in a current chroma block. The luma and chroma blocks are coded in dual tree mode. A quantization parameter of the current chroma block is then determined responsive to the quantization parameter of the at least one luma block. Finally, the current chroma block is decoded using the quantization parameter of the current chroma block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.