# US 12,003,720 B2 · Method and apparatus for signaling picture partitioning information

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- Number: US 12,003,720 B2
- Document ID: US12003720B2
- Status: Granted
- Kind: B2
- Application number: 17/780,333
- Filed: 2020-11-26
- Published: 2023-02-02
- Granted: 2024-06-04
- Earliest claimed: 2019-11-27
- Assignees: LG Electronics Inc.
- Applicants: LG Electronics Inc.
- Inventors: Hendry Hendry; Seethal Paluri; Seunghwan Kim
- Web page: https://patentgrep.com/patent/US12003720B2

## CPC

- H04N 19/119: Adaptive subdivision aspects, e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
- H04N 19/157: Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
- H04N 19/167: Position within a video image, e.g. region of interest [ROI]
- H04N 19/174: the region being a slice, e.g. a line of blocks or a group of blocks
- H04N 19/196: being specially adapted for the computation of encoding parameters, e.g. by averaging previously computed encoding parameters (processing of motion vectors H04N19/513)
- H04N 19/70: characterised by syntax aspects related to video coding, e.g. related to compression standards
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

In a method for decoding an image by a decoding apparatus according to the present disclosure, a current picture is configured to include a single slice, on the basis of a flag indicating whether information on a subpicture exists and a flag indicating whether the subpicture includes a single slice.

## Claims

### Claim 1

An image decoding method performed by a decoding apparatus, the method comprising:
obtaining image information on a current picture from a bitstream; and
decoding the current picture based on the image information,
wherein the image information includes a first flag related to a presence of subpicture information, and a second flag related to whether each subpicture includes only one slice, and
wherein a number of slices included in the current picture is derived to be equal to 1 based on the first flag and the second flag.

### Claim 2

An image encoding method performed by an encoding apparatus, the method comprising:
deriving at least one slice by partitioning a current picture; and
encoding image information for the current picture based on the at least one slice,
wherein the image information includes a first flag related to a presence of subpicture information and a second flag related to whether each subpicture in the current picture includes only one slice, and
wherein a number of slices included in the current picture is derived to be equal to 1 based on the first flag and the second flag.

### Claim 3

A transmission method of data for an image, the transmission method comprising:
obtaining a bitstream generated by a method, wherein the method comprising performing deriving at least one slice by partitioning a current picture and generating the bitstream by encoding image information for the current picture based on the at least one slice; and
transmitting the data comprising the bitstream,
wherein the image information includes a first flag related to a presence of subpicture information and a second flag related to whether each subpicture in the current picture includes only one slice, and
wherein a number of slices included in the current picture is derived to be equal to 1 based on the first flag and the second flag.