Method and apparatus for adaptive illumination compensation in video encoding and decoding
US11711525B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 16, 2022 |
| Grant date | Jul 25, 2023 |
| Priority date | — |
| Expiry date | Feb 16, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/52
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Different implementations are described for determining one or more illumination compensation parameters for a current block being encoded by a video encoder or decoded by a video decoder, based on the selection of one or more neighboring samples. The selection of the one or more neighboring samples is based on information used to reconstruct a plurality of neighboring reconstructed blocks. The selection may be based on the motion information, such as motion vector and reference picture information. In one example, only samples from neighboring reconstructed blocks that have (1) the same reference picture index and/or (2) a motion vector close to the motion vector of the current block is selected. In another example, if the current block derives or inherits some motion information from a top or left neighboring block, then only the top or left neighboring samples are selected for IC parameter calculation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.