Method of inter-frame prediction for video encoding and decoding
US10425656B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 2016 |
| Grant date | Sep 24, 2019 |
| Priority date | — |
| Expiry date | Jan 19, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/597
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video encoding and decoding method, and its inter-frame prediction method, device and system thereof are disclosed. The inter-frame prediction method includes obtaining a motion vector of the current image block and related spatial position of a current pixel, obtaining a motion vector of the current pixel according to the motion vector of the current image block and the related spatial position of the current pixel; and obtaining a predicted value of the current pixel according to the motion vector of the current pixel. The method considers both the motion vector of the current image block and the related spatial position information of the current pixel during inter-frame prediction. The method can accommodate lens distortion characteristics of different images and zoom-in/zoom-out produced when the object moves in pictures, thereby improving the calculation accuracy of pixels' motion vectors, and improving inter-frame prediction performance and compression efficiency in video encoding and decoding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.