Image coding method based on information related to tile and information related to slice in video or image coding system
AssigneeLG Electronics Inc.
InventorsHendry HENDRY, Seethal PALURI, Seunghwan KIM, Jie ZHAO
Life of this patent
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Abstract
According to a disclosure of the present document, information/parameter related to splitting of a picture can be signaled on the basis of a no-picture partition flag, information related to a tile, and information related to a slice, unnecessary redundant signaling can be removed accordingly, and the number of bits assigned to the signaling can be reduced, thereby deriving an effect of increasing an overall coding efficiency.
Claims16
An image decoding method performed by a decoding device, the method comprising:
- obtaining image information through a bitstream, wherein the image information includes a no-picture partition flag related to no-picture partitioning, and wherein based on the no-picture partition flag, the image information further includes information related to tile and information related to slice;
- deriving at least one tile in a current picture based on the information related to tile;
- deriving at least one slice in the current picture based on the information related to slice;
- and
- decoding the current picture based on the at least one tile and the at least one slice,
- wherein the information related to slice includes a rectangular slice flag, and the rectangular slice flag is related to whether tiles within a slice cover a rectangular region of the current picture,
- wherein based on the no-picture partition flag, a number of the at least one tile being derived as 1 and the rectangular slice flag, a number of the at least one slice is limited to be greater than 1.
An image encoding method performed by an encoding device, the method comprising:
- deriving at least one tile and at least one slice in a current picture;
- generating information related to tile, information related to slice and a no-picture partition flag related to no-picture partitioning based on the at least one tile and the at least one slice;
- and
- encoding image information including the information related to tile, the information related to slice and the no-picture partition flag,
- wherein the information related to slice includes a rectangular slice flag, and the rectangular slice flag is related to whether tiles within a slice cover a rectangular region of the current picture,
- wherein based on the no-picture partition flag, a number of the at least one tile being derived as 1, and the rectangular slice flag, a number of the at least one slice is limited to be greater than 1.
A transmission method of data for image, the method comprising:
- obtaining a bitstream of image information including the information related to tile, the information related to slice and the no-picture partition flag, wherein the bitstream is generated based on deriving at least one tile and at least one slice in a current picture, generating information related to tile, information related to slice and a no-picture partition flag related to no-picture partitioning based on the at least one tile and the at least one slice;
- and
- transmitting the data including the bitstream of the image information including the information related to tile, the information related to slice and the no-picture partition flag,
- wherein the information related to slice includes a rectangular slice flag, and the rectangular slice flag is related to whether tiles within a slice cover a rectangular region of the current picture,
- wherein based on the no-picture partition flag, a number of the at least one tile being derived as 1, and the rectangular slice flag, a number of the at least one slice is limited to be greater than 1.
Dependencies are inferred from the claim text.