Entropy coding using transform class
US11477462B2 · kind B2 · utility
2Cited by
31References
20Claims
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Key dates
| Filing date | Dec 15, 2020 |
| Grant date | Oct 18, 2022 |
| Priority date | — |
| Expiry date | Mar 17, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/122
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for decoding a current block includes a processor that is configured to obtain a transform class of a transform type used for decoding a transform block of the current block; select, based on the transform class, a template for coding a value related to a transform coefficient at a row and a column of the transform block; obtain, using the template, an index of a probability distribution in a table of probability distributions; and decode, from a compressed bitstream, the value using the probability distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.