US 2019/0320180 A1 · Reducing Overhead for Multiple-Hypothesis Temporal Prediction

Abstract

A method is provided for inter-coding video in which transmission bandwidth requirements associated with second motion vectors for bi-directional temporal prediction is reduced. In the method, vector information for one of motion vectors for multi-directional temporal prediction can be transmitted together with information on how to derive or construct the second motion vectors. Thus, rather than sending express information regarding each of the plurality of motion vectors, express information related to only one motion vector along with information related to reconstruction/derivation of the second motion vectors is transmitted, thus reducing bandwidth requirements and increasing coding efficiency.

Claims20

Dependent claims

A method of inter-coding comprising:

receiving information regarding a coding unit;
determining motion information associated with said coding unit;
determining whether more than two motion vectors are associated with said motion information;
determining a relationship between a first motion vector and each of a plurality of second motion vectors if it is determined that said motion information is associated with more than two motion vectors;
and
encoding said coding unit,
wherein said coding unit comprises information related to said first motion vector and information related to said relationship between said first motion vector and each of said second motion vectors.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

16/384,852Filed 15 Apr 2019

Priority

15 Apr 2018

Published

17 Oct 2019

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

H04N 19/109
Selection of coding mode or of prediction mode: among a plurality of temporal predictive coding modes
H04N 19/137
Incoming video signal characteristics or properties: motion inside a coding unit, e.g. average field, frame or block difference
H04N 19/105
Selection of coding mode or of prediction mode: selection of the reference unit for prediction within a chosen coding or prediction mode, e.g.…
H04N 19/139
Motion inside a coding unit, e.g. average field, frame or block difference: analysis of motion vectors, e.g. their magnitude, direction, variance…

Reducing Overhead for Multiple-Hypothesis Temporal Prediction

Life of this patent

Reducing Overhead for Multiple-Hypothesis Temporal Prediction

Life of this patent

Abstract

Claims20