US 12,192,511 B2 · Methods and apparatuses for signaling of syntax elements in video coding

Abstract

Methods and apparatuses for video coding are provided. The method includes that a decoder determines whether one or more reference picture lists are signaled in a picture header (PH) associated with a picture and whether the one or more reference picture lists indicate that one or more slices associated with the picture are bi-predictive. The method further includes that the decoder adds one or more constraints to one or more syntax elements in the PH in response to determining that the one or more reference picture lists are signaled in the PH and the one or more reference picture lists indicate that the one or more slices are not bi-predictive.

Claims15

Dependent claims

A method for video decoding, comprising:

determining, by a decoder, whether information of one or more reference picture lists is signaled in a picture header (PH) associated with a picture, and determining from the information of the one or more reference picture lists whether one or more slices associated with the picture are bi-predictive in response to determining that the information of the one or more reference picture lists is signaled in the PH;
and
in response to determining that the information of the one or more reference picture lists is signaled in the PH and determining from the information of the one or more reference picture lists that the one or more slices are not bi-predictive, not parsing, by the decoder, one or more syntax elements in the PH.

An apparatus for video decoding, comprising:

one or more processors;
and
a memory configured to store instructions executable by the one or more processors;
wherein the one or more processors, upon execution of the instructions, are configured to:
determine whether information of one or more reference picture lists is signaled in a picture header (PH) associated with a picture, and determine from the information of the one or more reference picture lists whether one or more slices associated with the picture are bi-predictive in response to determining that the information of the one or more reference picture lists is signaled in the PH;
and
in response to determining that the information of the one or more reference picture lists is signaled in the PH and determining from the information of the one or more reference picture lists that the one or more slices are not bi-predictive, not parse one or more syntax elements in the PH.

4 more elements

A non-transitory computer-readable storage medium for video decoding storing a bitstream to be decoded by a method for video decoding comprising:

determining whether information of one or more reference picture lists is signaled in a picture header (PH) associated with a picture, and determining from the information of the one or more reference picture lists whether one or more slices associated with the picture are bi-predictive in response to determining that the information of the one or more reference picture lists is signaled in the PH;
and
in response to determining that the information of the one or more reference picture lists is signaled in the PH and determining from the information of the one or more reference picture lists that the one or more slices are not bi-predictive, not parsing one or more syntax elements in the PH.

Dependencies are inferred from the claim text.

Facts

Application

17/956,711Filed 29 Sep 2022 · continuation

Priority

31 Mar 2020

Published

US 2023/0031699 A12 Feb 2023

Granted

7 Jan 2025

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

H04N 19/52
By encoding: by predictive encoding
H04N 19/521
Processing of motion vectors: for estimating the reliability of the determined motion vectors or motion vector field, e.g. for smoothing the…
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 19/159
Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter:…

Methods and apparatuses for signaling of syntax elements in video coding

Life of this patent

Methods and apparatuses for signaling of syntax elements in video coding

Life of this patent

Abstract

Claims15