Intra-prediction-based encoding and decoding method, apparatus and filter
US11451774B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2019 |
| Grant date | Sep 20, 2022 |
| Priority date | — |
| Expiry date | Mar 26, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/82
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An embodiment of the present disclosure discloses an intra-prediction-based encoding and decoding method, apparatus and filter, and belongs to a video coding technical field. The method comprises: acquiring reconstructed pixels adjacent to a to-be-predicted prediction block; determining corresponding reconstructed pixels adjacent to the to-be-predicted prediction block among the reconstructed pixels as reference pixels for filtering, based on prediction modes of the to-be-predicted prediction block; based on the reference pixels, using a filter corresponding to prediction modes of the to-be-predicted prediction block to filter interim prediction values of the to-be-predicted prediction block, to obtain new pixel values of the to-be-predicted prediction block, wherein the interim prediction values are obtained based on other intra prediction methods; performing a CLIP operation on the new pixel values of the to-be-predicted prediction block, to obtain a first prediction value of the to-be-predicted prediction block. By the method provided in the specification, the accuracy of intra prediction may be improved, and coding efficiency may be improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.