Image prediction method and device
US10880543B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 27, 2018 |
| Grant date | Dec 29, 2020 |
| Priority date | — |
| Expiry date | Apr 15, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/54
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image prediction method and device are disclosed. The method includes: obtaining a first reference unit of an image unit, where respective predicted images are obtained for the image unit and the first reference unit by using a same affine model; obtaining motion information of basic motion compensation units at two or more preset positions in the first reference unit; and obtaining motion information of a basic motion compensation unit of the image unit according to the motion information. In this way, motion information of the first reference unit using a same affine motion prediction model is reused, and a more accurate motion vector of a current image unit is obtained, improving prediction accuracy and maintaining encoding and decoding complexity, thereby improving encoding and decoding performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.