Video encoding and decoding
US8824555B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2012 |
| Grant date | Sep 2, 2014 |
| Priority date | — |
| Expiry date | Mar 8, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/107
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A temporal motion vector predictor is includable, together with one or more spatial motion vector predictors, in a set of motion vector predictors for a block to encode of a current frame. A method of determining the temporal motion vector predictor comprises selecting as the temporal predictor one motion vector from among motion vectors in a reference block of a reference frame different from the current frame. The reference block is a block of the reference frame collocated with the block to encode or a block of the reference frame neighboring the collocated block. The selection is based on a diversity criterion for achieving diversity among the predictors of the set.This can reduce the motion vector memory requirements with no or no significant additional coding efficiency penalty. Alternatively, even if the motion vector memory is not reduced in size, coding efficiency improvements can be achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.