US 12,764,299 B2Granted

Method and device for signaling image information

AssigneeLG Electronics Inc.

InventorsHendry Hendry, Seunghwan Kim

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Abstract

An image decoding method performed by a decoding device according to the present disclosure comprises the steps of: obtaining prediction-related information and indication information comprising a first flag which indicates whether or not a sample adaptive offset (SAO) process to be applied to a current block is applied at a picture level or a slice level; parsing information related to the SAO process from a picture header or a slice header on the basis of the first flag; generating prediction samples for the current block on the basis of the prediction-related information; generating reconstructed samples for the current block on the basis of the prediction samples; and performing the SAO process for the reconstructed samples on the basis of the information related to the SAO process.

Claims3

Dependent claims

A decoding apparatus for an image decoding, the decoding apparatus comprising:

a memory;
and
at least one processor connected to the memory, the at least one processor configured to:
obtain Sample Adaptive Offset (SAO) related flag information indicating whether a SAO procedure for a current block is applied at a picture level or a slice level and prediction related information;
determine from which header among a picture header or a slice header SAO information for the SAO procedure is parsed based on the SAO related flag information;
parse the SAO information for the SAO procedure from the picture header or the slice header based on the determination;
and
decode a current block based on the SAO related flag information and the prediction related information,
wherein the current block is decoded based on:
deriving a prediction mode based on the prediction related information,
generating prediction samples for the current block based on the prediction mode,
generating reconstructed samples for the current block based on the prediction samples, and
performing the SAO procedure on the reconstructed samples based on the SAO information for the SAO procedure, and
wherein the SAO related flag information is obtained from a Picture Parameter Set (PPS).

11 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/946,256Filed 13 Nov 2024 · continuation
Priority: 12 Dec 2019
Published: US 2025/0071290 A127 Feb 2025
Granted: 13 Oct 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

H04N 19/136
Characterised by the element, parameter or criterion affecting or controlling the adaptive coding: incoming video signal characteristics or properties
H04N 19/132
Characterised by the element, parameter or selection affected or controlled by the adaptive coding: sampling, masking or truncation of coding…
H04N 19/176
The unit being an image region, e.g. an object: the region being a block, e.g. a macroblock
H04N 19/46
Methods or arrangements for coding, decoding, compressing or decompressing digital video signals: embedding additional information in the video…

Family

Application62/947,528Us provisional application · filed 12 Dec 2019
Application17/783,572Parent of this continuation · filed 10 Dec 2020
PCT/KR2020/018066Parent of this continuation · filed 10 Dec 2020
US 2025/0071290 A1Pre-grant publication · published 27 Feb 2025
US 12,166,996 B2Parent of this continuation
US 2023/0051024 A1Published application
US 12,764,299 B2This patent

From the US filing history. Foreign family members aren’t listed.

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