Methods incorporating extensions to copy-above mode for palette mode coding
US11330297B2 · kind B2 · utility
1Cited by
3References
8Claims
0Family size
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Key dates
| Filing date | Aug 4, 2015 |
| Grant date | May 10, 2022 |
| Priority date | — |
| Expiry date | Mar 10, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/93
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods incorporating extensions to copy-above mode for palette mode coding are disclosed. In one aspect, the method includes coding a current pixel of a current block of video data in copy-previous mode via coding a previous line index. The coding of the current pixel in copy-previous mode further including identifying a number of candidate values for the previous line index, identifying a number of escape pixels in a column of pixels above the current pixel in the current block, and reducing a number of candidate values of the previous line index by the number of identified escape pixels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.