Cascade prediction
US11838531B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2020 |
| Grant date | Dec 5, 2023 |
| Priority date | — |
| Expiry date | Dec 3, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/467
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A first predictor is applied to an input image to generate first-stage predicted codewords approximating prediction target codewords of a prediction target image. Second-stage prediction target values are created by performing an inverse cascade operation on the prediction target codewords and the first-stage predicted codewords. A second predictor is applied to the input image to generate second-stage predicted values approximating the second-stage prediction target values. Multiple sets of cascade prediction coefficients are generated to comprise first and second sets of cascade prediction coefficients specifying the first and second predictors. The multiple sets of cascade prediction coefficients are encoded, in a video signal, as image metadata. The video signal is further encoded with the input image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.