Method and apparatus for palette initialization and management
US10979726B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2019 |
| Grant date | Apr 13, 2021 |
| Priority date | — |
| Expiry date | Apr 22, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/593
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus perform palette coding of a block of video data by initializing the palette or triplet palette or using a selected palette or triplet palette from a preceding image area for the beginning block of the current image area. The method receives input data associated with a current image area consisting of multiple blocks. For the beginning block, coding palette predictor is determined based on an initial palette or triplet palette or based on a selected palette or triplet palette associated with a selected block located at a location before the end of a preceding image area. For blocks of the current image area, palette coding is applied to the blocks, where at least one block uses the palette predictor for the beginning block as the palette predictor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.