Last coefficient coding for adaptive transform based video compression
US11496752B2 · kind B2 · utility
3Cited by
2References
20Claims
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Key dates
| Filing date | Jul 12, 2017 |
| Grant date | Nov 8, 2022 |
| Priority date | — |
| Expiry date | Jul 12, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/192
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Coding of the last coded coefficient position is performed by basing the coding of they coordinate of the position of the last coded coefficient on knowledge of the size of the partial transform used to generate a block of coefficients from a block of video pixels. This enables a context adaptive coding of the last coded coefficient parameter to be performed much more efficiently.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.