Encoder, decoder, encoding method, and decoding method
US11616977B2 · kind B2 · utility
1Cited by
4References
2Claims
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Key dates
| Filing date | Sep 13, 2021 |
| Grant date | Mar 28, 2023 |
| Priority date | — |
| Expiry date | Sep 13, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An encoder includes memory and circuitry. The circuitry: derives a first motion vector in a unit of a prediction block using a first inter frame prediction mode that uses a degree of matching between two reconstructed images of two regions in two difference pictures, the prediction block being obtained by splitting an image included in a video; and performs, in the unit of the prediction block, a first motion compensation process that generates a prediction image by referring to a spatial gradient of luminance in an image generated by performing motion compensation using the first motion vector derived.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.