Reference sample memory size restrictions for intra block copy
US11509919B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2019 |
| Grant date | Nov 22, 2022 |
| Priority date | — |
| Expiry date | Aug 22, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/96
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for video decoding at a decoder is provided. In the method, reconstructed samples of a reconstructed block of a picture are stored in a first reference sample memory. The first reference sample memory is configured to store at least one set of a number of luma samples and corresponding chroma samples of the reconstructed block. Further, reconstructed samples of a current block of the picture are stored in a second reference sample memory. The second reference sample memory is configured to store only one set of the number of luma samples and corresponding chroma samples of the current block. A current sub-block in the current block is reconstructed using an intra block copy (IBC) mode based on the stored reconstructed samples of a reference sub-block of the reconstructed block or the stored reconstructed samples of a reference sub-block of the current block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.