Method and apparatus for performing optimal prediction based on weight index
US10880552B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2017 |
| Grant date | Dec 29, 2020 |
| Priority date | — |
| Expiry date | Sep 28, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/96
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a method for performing bidirectional prediction on a current block by using a weight index, the method comprising the steps of: determining whether the number of pixels of the current block is less than or equal to a threshold number of pixels; determining a weight index or a weight value of the current block on the basis of a weight index of a neighboring block if the number of pixels of the current block is less than or equal to the threshold number of pixels; obtaining a bidirectional predicted value for the current block on the basis of the weight index or the weight value of the current block; and restoring the current block by using the bidirectional predicted value, wherein the threshold number of pixels indicates a maximum number of pixels within a block necessary to share a weight index between blocks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.