Adaptive non-linear mapping for sample offset
US11683530B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 4, 2022 |
| Grant date | Jun 20, 2023 |
| Priority date | — |
| Expiry date | Jan 4, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/70
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for in-loop sample offset filtering in a video decoder is disclosed. The method includes obtaining at least one statistical property associated with reconstructed samples of at least a first color component in a current reconstructed data block of a video stream, selecting a target sample offset filter among a plurality of sample offset filters based on the at least one statistical property, the target sample offset filter comprising a nonlinear mapping between sample delta measures and sample offset values, and filtering a current sample in a second color component of the current reconstructed data block using the target sample offset filter and reference samples in a third color component of the current reconstructed data block to generate a filtered reconstructed sample of the current sample.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.