Context derivation for last position coding for video coding
US11218735B2 · kind B2 · utility
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30Claims
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Key dates
| Filing date | Mar 31, 2020 |
| Grant date | Jan 4, 2022 |
| Priority date | — |
| Expiry date | Mar 31, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/1883
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video coder may determine contexts for entropy coding bins of a last significant coefficient position syntax element. For example, a video coder may determine a respective context for each of one or more bins of a syntax element indicating the position of the last significant coefficient in a transform block using a function of a size of the transform block, wherein the function outputs the respective context such that the same context is not used for transform blocks of differing sizes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.