Alpha channel post processing in image coding
US12167046B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2021 |
| Grant date | Dec 10, 2024 |
| Priority date | — |
| Expiry date | Oct 30, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20028
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Alpha channel post processing in image coding can include decoding, from multiple color channels of a bitstream, color channel values for an encoded image, decoding, from an alpha channel of the bitstream, alpha channel values for the encoded image, determining a bilateral filter based on a level of compression for encoding the alpha channel, post processing the alpha channel values by filtering the alpha channel values using the bilateral filter to obtain filtered alpha channel values, and generating at least a portion of a reconstructed image corresponding to the encoded image using the filtered alpha channel values and the color channel values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.