High efficiency adaptive loop filter processing for video coding
US10609417B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 2017 |
| Grant date | Mar 31, 2020 |
| Priority date | — |
| Expiry date | Jul 21, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/439
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and a circuit for adaptive loop filtering in a video coding system are described. The method can include receiving a block of samples generated from a previous-stage filter circuit in a filter pipeline, the block of samples being one of multiple blocks included in a current picture, performing, in parallel, adaptive loop filter (ALF) processing for multiple target samples in the block of samples, while the previous-stage filter circuit is simultaneously processing another block in the current picture, storing, in a buffer, first samples each having a filter input area defined by a filter shape that includes at least one sample which has not been received, and storing, in the buffer, second samples included in the filter input areas of the first samples.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.