Image decoding device with block motion compensator and determination mechanism
US12363340B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 2024 |
| Grant date | Jul 15, 2025 |
| Priority date | — |
| Expiry date | May 8, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/86
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image decoding device includes: a motion compensation predictor configured to generate a prediction image signal of a prediction target block based on information about a motion vector in a unit of the block and a reference frame; an overlapped block motion compensator carrying out an overlapped block motion compensation process of correcting the prediction image signal of the prediction target block by subjecting the prediction image signal of the prediction target block and a prediction image signal generated based on information about a motion vector and a reference frame of an adjacent block of the prediction target block to weighted averaging; and a determinator determining whether the overlapped block motion compensation process is applied to the prediction target block or not. The determinator determines application of the overlapped block motion compensation process to the prediction target block, when unidirectional prediction is applied to the adjacent block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.