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US 12,225,194 B2Granted
Method and device for signaling slice-related information
AssigneeLG Electronics Inc.
InventorsHendry Hendry, Seethal Paluri, Seunghwan Kim
Life of this patent
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Abstract
In an image decoding method performed by a decoding device according to the present disclosure, whether the number of slices included in the current picture is 1 is determined on the basis of a flag pertaining to whether or not sub-picture information is present, and a flag pertaining to whether a sub-picture includes a single slice.
Claims3
An image decoding method performed by a decoding apparatus, the method comprising:
- receiving image information including partitioning information for a current picture from a bitstream;
- deriving a partitioning structure of the current picture including at least one slice based on the partitioning information for the current picture;
- and
- decoding the current picture based on the partitioning structure,
- wherein the image information includes a first flag related to the presence of subpicture information and a second flag related to whether each subpicture in the current picture includes only one slice,
- wherein a value of the second flag is equal to 1 or 0,
- wherein the value of the second flag being equal to 1 represents that the each subpicture in the current picture includes only one slice,
- wherein a number of subpictures in the current picture is derived to be equal to 1 based on a value of the first flag being equal to 0,
- wherein whether a number of slices included in the current picture is equal to 1 is determined by the value of the second flag based on the value of the first flag being equal to 0, and
- wherein the image information includes information representing a number of slices in the current picture based on the second flag.
7 more elements
An image encoding method performed by an encoding apparatus, the method comprising:
- partitioning a current picture into at least one slice;
- deriving a partitioning structure of the current picture including at least one slice;
- generating partitioning information of the current picture based on the partitioning structure;
- and
- encoding image information for the current picture including the partitioning information,
- wherein the partitioning information includes a first flag related to the presence of subpicture information and a second flag related to whether each subpicture in the current picture includes only one slice,
- wherein a value of the second flag is equal to 1 or 0,
- wherein the value of the second flag being equal to 1 represents that the each subpicture in the current picture includes only one slice,
- wherein a number of subpictures in the current picture is derived to be equal to 1 based on a value of the first flag being equal to 0,
- wherein whether a number of slices included in the current picture is equal to 1 is determined by the value of the second flag based on the value of the first flag being equal to 0, and
- wherein the image information includes information representing a number of slices in the current picture based on the second flag.
8 more elements
A transmission method of data for image, the transmission method comprising:
- obtaining a bitstream generated by a method, wherein the method comprises:
- partitioning a current picture into at least one slice,
- deriving a partitioning structure of the current picture including at least one slice,
- generating partitioning information of the current picture based on the partitioning structure and
- generating the bitstream by encoding image information for the current picture including the partitioning information;
- and
- transmitting the data comprising the bitstream,
- wherein the partitioning information includes a first flag related to the presence of subpicture information and a second flag related to whether each subpicture in the current picture includes only one slice,
- wherein a value of the second flag is equal to 1 or 0,
- wherein the value of the second flag being equal to 1 represents that the each subpicture in the current picture includes only one slice,
- wherein a number of subpictures in the current picture is derived to be equal to 1 based on a value of the first flag being equal to 0,
- wherein whether a number of slices included in the current picture is equal to 1 is determined by the value of the second flag based on the value of the first flag being equal to 0, and
- wherein the image information includes information representing a number of slices in the current picture based on the second flag.
10 more elements
Dependencies are inferred from the claim text.