Method for encoding/decoding image signal, and device for same
A video decoding method according to the present disclosure may include partitioning a current picture into a plurality of tiles, decoding partitioning information representing a slice type, wherein the partitioning information represents whether a rectangular slice is applied and decoding first width information and first height information of a slice when the partitioning information represents that the rectangular slice is applied.
1. A method of encoding a video, the method comprising:
obtaining a current picture of the video;
partitioning the current picture into a plurality of tiles;
encoding, in a bitstream, a flag representing whether a number of slices in the current picture is one, wherein a value of the flag is one of:
a first value representing that the number of slices in the current picture is one, or
a second value representing that the number of slices in the current picture is greater than one; and
determining whether to encode slice configuration information in the bitstream, wherein determining whether to encode slice configuration information in the bitstream comprises at least one of:
responsive to determining that the number of slices in the current picture is one, refraining from encoding the slice configuration information in the bitstream, or
responsive to determining that the number of slices in the current picture is greater than one, encoding the slice configuration information from the bitstream.
2. The method of claim 1 , further comprising:
determining that the number of slices in the current picture is greater than one; and
responsive to determining that the number of slices in the current picture is greater than one, encoding the slice configuration information in the bitstream.
3. The method of claim 1 , where the slice configuration information comprises syntax representing an index of a tile included in one of the slices.
4. The method of claim 1 , wherein the slice configuration information comprises syntax representing a difference between a first index of a first tile and a second index of a second tile, wherein the first tile and the second tile are included in one of the slices.
5. A system comprising:
one or more processors; and
memory storing instructions that when executed by the one or more processors, cause the one or more processors to perform operations comprising:
obtaining a current picture of a video;
partitioning the current picture into a plurality of tiles;
encoding, in a bitstream, a flag representing whether a number of slices in the current picture is one, wherein a value of the flag is one of:
a first value representing that the number of slices in the current picture is one, or
a second value representing that the number of slices in the current picture is greater than one; and
determining whether to encode slice configuration information in the bitstream, wherein determining whether to encode slice configuration information in the bitstream comprises at least one of:
responsive to determining that the number of slices in the current picture is one, refraining from encoding the slice configuration information in the bitstream, or
responsive to determining that the number of slices in the current picture is greater than one, encoding the slice configuration information from the bitstream.
6. The system of claim 5 , the operations further comprising:
determining that the number of slices in the current picture is greater than one; and
responsive to determining that the number of slices in the current picture is greater than one, encoding the slice configuration information in the bitstream.
7. The system of claim 5 , where the slice configuration information comprises syntax representing an index of a tile included in one of the slices.
8. The system of claim 5 , wherein the slice configuration information comprises syntax representing a difference between a first index of a first tile and a second index of a second tile, wherein the first tile and the second tile are included in one of the slices.
9. One or more non-transitory, computer-readable storage media having instructions stored thereon, that when executed by one or more processors, cause the one or more processors to perform operations comprising:
obtaining a current picture of a video;
partitioning the current picture into a plurality of tiles;
encoding, in a bitstream, a flag representing whether a number of slices in the current picture is one, wherein a value of the flag is one of:
a first value representing that the number of slices in the current picture is one, or
a second value representing that the number of slices in the current picture is greater than one; and
determining whether to encode slice configuration information in the bitstream, wherein determining whether to encode slice configuration information in the bitstream comprises at least one of:
responsive to determining that the number of slices in the current picture is one, refraining from encoding the slice configuration information in the bitstream, or
responsive to determining that the number of slices in the current picture is greater than one, encoding the slice configuration information from the bitstream.
10. The one or more non-transitory, computer-readable storage media of claim 9 , the operations further comprising:
determining that the number of slices in the current picture is greater than one; and
responsive to determining that the number of slices in the current picture is greater than one, encoding the slice configuration information in the bitstream.
11. The one or more non-transitory, computer-readable storage media of claim 9 , where the slice configuration information comprises syntax representing an index of a tile included in one of the slices.
12. The one or more non-transitory, computer-readable storage media of claim 9 , wherein the slice configuration information comprises syntax representing a difference between a first index of a first tile and a second index of a second tile, wherein the first tile and the second tile are included in one of the slices.