Robust encoding/decoding of escape-coded pixels in palette mode
US10659783B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2015 |
| Grant date | May 19, 2020 |
| Priority date | — |
| Expiry date | Jul 27, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/70
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Approaches to robust encoding and decoding of escape-coded pixels in a palette mode are described. For example, sample values of escape-coded pixels in palette mode are encoded/decoded using a binarization process that depends on a constant value of quantization parameter (“QP”) for the sample values. Or, as another example, sample values of escape-coded pixels in palette mode are encoded/decoded using a binarization process that depends on sample depth for the sample values. Or, as still another example, sample values of escape-coded pixels in palette mode are encoded/decoding using a binarization process that depends on some other fixed rule. In example implementations, these approaches avoid dependencies on unit-level QP values when parsing the sample values of escape-coded pixels, which can make encoding/decoding more robust to data loss.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.