P frame-based multi-hypothesis motion compensation method
US10298950B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2016 |
| Grant date | May 21, 2019 |
| Priority date | — |
| Expiry date | May 7, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/159
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A P frame-based multi-hypothesis motion compensation method includes: taking an encoded image block adjacent to a current image block as a reference image block and obtaining a first motion vector of the current image block by using a motion vector of the reference image block, the first motion vector pointing to a first prediction block; taking the first motion vector as a reference value and performing joint motion estimation on the current image block to obtain a second motion vector of the current image block, the second motion vector pointing to a second prediction block; and performing weighted averaging on the first prediction block and the second prediction block to obtain a final prediction block of the current image block. The method increases the accuracy of the obtained prediction block of the current image block without increasing the code rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.