History-based motion vector prediction
US11582475B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2020 |
| Grant date | Feb 14, 2023 |
| Priority date | — |
| Expiry date | Sep 22, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/56
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Systems, methods, and computer-readable media are provided for updating history-based motion vector tables. In some examples, a method can include obtaining one or more blocks of video data; determining a first motion vector derived from a first control point of a block of the one or more blocks, the block being coded using an affine motion mode; determining a second motion vector derived from a second control point of the block; based on the first motion vector and the second motion vector, estimating a third motion vector for a predetermined location within the block; and populating a history-based motion vector predictor (HMVP) table with the third motion vector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.