Method and apparatus for encoding image by using quantization table adaptive to image
US11122267B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 1, 2019 |
| Grant date | Sep 14, 2021 |
| Priority date | — |
| Expiry date | Nov 1, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/196
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Provided is a method of encoding an image, the method including: obtaining a plurality of patches from the image; obtaining a plurality of transform coefficient groups respectively corresponding to the plurality of patches; inputting, to a machine learning model, input values corresponding to transform coefficients included in each of the plurality of transform coefficient groups; quantizing transform coefficients corresponding to the image by using a quantization table output from the machine learning model; and generating a bitstream including data generated as a result of the quantizing and information about the quantization table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.