Granted Patent B2

US 12,323,626 · App. 17/911,677 · Granted Jun 3, 2025

Inventors: Mitsuru Katsumata (Tokyo, JP); Ryohei Takahashi (Tokyo, JP); Mitsuhiro Hirabayashi (Tokyo, JP)

Assignee: SONY GROUP CORPORATION

H04N19/70H04N19/167H04N19/172H04N19/96

Abstract

Claims (85)

1. An information processing device comprising:

a control circuitry that:

encodes a picture including two or more subpictures to generate encoded data;

generates subpicture mapping information that includes:

first size information indicating a size of a first subpicture among the two or more subpictures,

reference position information indicating X and Y coordinates of a reference pixel in the first subpicture, and

a size flag indicating whether or not a size of each of one or more second subpictures is the same as the size of the first subpicture; and

generates a bitstream including the encoded data and the subpicture mapping information,

wherein:

based on the size flag indicating that the size of each of the one or more second subpictures is not the same as the size of the first subpicture, the subpicture mapping information further includes:

information identifying the size of each of the one or more second subpictures, and

reference position information indicating X and Y coordinates of a reference pixel in each of the one or more second subpictures, and

based on the size flag indicating that the size of each of the one or more second subpictures is the same as the size of the first subpicture, the subpicture mapping information:

omits additional information identifying the size of each of the one or more second subpictures, and

omits the reference position information indicating X and Y coordinates of the reference pixel in each of the one or more second subpictures.

2. The information processing device according to claim 1 , wherein

the size of the first subpicture is defined in coding tree unit (CTU).

3. The information processing device according to claim 1 , wherein

the first subpicture is a subpicture located at an upper left end of the picture.

4. The information processing device according to claim 1 , wherein

the first size information includes information on a width and a height of the first subpicture.

5. The information processing device according to claim 1 , wherein

the subpicture mapping information further includes position information indicating a position of each of the first subpicture and the one or more second subpictures in the picture.

6. The information processing device according to claim 1 , wherein

the subpicture mapping information further includes:

first position information indicating a position of the first subpicture in the picture, and

a position flag indicating whether or not a position of each of the one or more second subpictures in the picture is to be determined on the basis of the first position information and the first size information.

7. An information processing device comprising:

a control circuitry that:

acquires encoded data and subpicture mapping information from a bitstream;

decodes the encoded data to restore a picture, and segments the restored picture into two or more subpictures on the basis of the subpicture mapping information; and

renders the picture according to the two or more subpictures,

wherein the subpicture mapping information includes:

first size information identifying a size of a first subpicture among the two or more subpictures,

reference position information indicating X and Y coordinates of a reference pixel in the first subpicture, and

a size flag indicating whether or not a size of each of one or more second subpictures is the same as the size of the first subpicture,

wherein:

based on the size flag indicating that the size of each of the one or more second subpictures is not the same as the size of the first subpicture, the subpicture mapping information further includes:

information identifying the size of each of the one or more second subpictures, and

reference position information indicating X and Y coordinates of a reference pixel in each of the one or more second subpictures, and

based on the size flag indicating that the size of each of the one or more second subpictures is the same as the size of the first subpicture, the subpicture mapping information:

omits additional information identifying the size of each of the one or more second subpictures, and

omits the reference position information indicating X and Y coordinates of the reference pixel in each of the one or more second subpictures.

8. The information processing device according to claim 7 , wherein

the size of the first subpicture is defined in coding tree unit (CTU).

9. The information processing device according to claim 7 , wherein

the first subpicture is a subpicture located at an upper left end of the picture.

10. The information processing device according to claim 7 , wherein

the first size information includes information on a width and a height of the first subpicture.

11. The information processing device according to claim 7 , wherein

the subpicture mapping information further includes position information indicating a position of each of the first subpicture and the one or more second subpictures in the picture.

12. The information processing device according to claim 7 , wherein

the subpicture mapping information further includes:

first position information indicating a position of the first subpicture in the picture, and

a position flag indicating whether or not a position of each of the one or more second subpictures in the picture is to be determined on the basis of the first position information and the first size information, and

the control circuitry calculates the second position information indicating a position of each of the one or more second subpictures in the picture on the basis of the first position information and the first size information.

13. An information processing method performed by an information processing device, the method comprising:

encoding a picture including two or more subpictures to generate encoded data;

generating subpicture mapping information that includes:

first size information indicating a size of a first subpicture among the two or more subpictures,

reference position information indicating X and Y coordinates of a reference pixel in the first subpicture, and

a size flag indicating whether or not a size of each of one or more second subpictures is the same as the size of the first subpicture; and

generating a bitstream including the encoded data and the subpicture mapping information,

wherein:

based on the size flag indicating that the size of each of the one or more second subpictures is not the same as the size of the first subpicture, the subpicture mapping information further includes:

information identifying the size of each of the one or more second subpictures, and

reference position information indicating X and Y coordinates of a reference pixel in each of the one or more second subpictures, and

based on the size flag indicating that the size of each of the one or more second subpictures is the same as the size of the first subpicture, the subpicture mapping information:

omits additional information identifying the size of each of the one or more second subpictures, and

omits the reference position information indicating X and Y coordinates of the reference pixel in each of the one or more second subpictures.

14. An information processing method performed by an information processing device, the method comprising:

acquiring encoded data and subpicture mapping information from a bitstream;

decoding the encoded data to restore a picture, and segmenting the restored picture into two or more subpictures on the basis of the subpicture mapping information; and

rendering the picture according to the two or more subpictures,

wherein the subpicture mapping information includes:

first size information identifying a size of a first subpicture among the two or more subpictures,

reference position information indicating X and Y coordinates of a reference pixel in the first subpicture, and

a flag indicating whether or not a size of each of one or more second subpictures is the same as the size of the first subpicture,

wherein:

based on the size flag indicating that the size of each of the one or more second subpictures is not the same as the size of the first subpicture, the subpicture mapping information further includes:

information identifying the size of each of the one or more second subpictures, and

reference position information indicating X and Y coordinates of a reference pixel in each of the one or more second subpictures, and

based on the size flag indicating that the size of each of the one or more second subpictures is the same as the size of the first subpicture, the subpicture mapping information:

omits additional information identifying the size of each of the one or more second subpictures, and

omits the reference position information indicating X and Y coordinates of the reference pixel in each of the one or more second subpictures.

Assignments (1)

Continuity (3)

References Cited (26)