Method for image encoding and apparatus for implementing the same using interpolation filter based on motion speed
US11218696B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 2020 |
| Grant date | Jan 4, 2022 |
| Priority date | — |
| Expiry date | Feb 21, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/59
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of encoding a first image in a plurality of images of input video data, wherein the first image is divided into a plurality of pixel blocks comprises, for a current block of the first image: determining a motion speed for the current block with respect to a reference block correlated to the current block in a second image of the plurality of images, wherein the second image is distinct from the first image and was previously encoded according to an image encoding sequence for encoding the images of the plurality of images; determining an interpolation filter based on the motion speed; and using the interpolation filter for calculating fractional pixel values in the second image for a temporal prediction of pixels of the current block based on the reference block of the second image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.