Adjustable per-symbol entropy coding probability updating for image and video coding
US10567807B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2019 |
| Grant date | Feb 18, 2020 |
| Priority date | — |
| Expiry date | Feb 4, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/70
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Decoding encoded image data using adjustable per-symbol entropy coding probability updating may include identifying a probability update indicator indicating whether per-symbol entropy coding probability updating is enabled, identifying current entropy coding probabilities, identifying a current entropy coded representation of a current symbol, generating the current symbol by entropy decoding the current entropy coded representation of the current symbol based on the current entropy coding probabilities, in response to a determination that the probability update indicator indicates that per-symbol entropy coding probability updating is enabled for the current portion, generating updated entropy coding probabilities based on the current symbol and the current entropy coding probabilities, generating a decoded current portion using the current symbol, including the decoded current portion in the decoded image data, and outputting the decoded image data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.