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US 2022/0103819 A1Published application
Image signal encoding/decoding method and device for same
AssigneeXris Corporation
InventorBae Keun LEE
Life of this patent
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Abstract
An image decoding method according to the present invention may include splitting a picture into a plurality of tiles; and determining at least one slice on the basis of the plurality of tiles. Here, splitting a picture into a plurality of tiles may include: determining the width of a first tile column in the picture; and determining the width of a second tile column neighboring the first tile column.
Claims9
A method of decoding a video, the method comprising:
- partitioning a current picture into a plurality of tile columns;
- partitioning the current picture into a plurality of tile rows;
- and
- decoding slice determination method information from a bitstream when the current picture includes a plurality of tiles, the slice determination method information indicating a slice determination method, the slice determination method comprising at least one of a raster scanning order mode or a rectangular shape mode,
- wherein when the slice determination method information indicates the rectangular shape mode, the method further comprises:
- decoding slice number information specifying a number of slices included in the current picture;
- and
- determining, based on whether a first slice is the last one among a plurality of slices in the current picture or not, whether to decode tile index differential information for the first slice from the bitstream or not,
- wherein when the first slice is not the last one among the plurality of slices in the current picture, the tile index differential information for the first slice is decoded from the bitstream, the tile index differential information representing a difference between an index of a tile at a top-left position in the first slice and an index of a tile at a top-left position in a second slice, and
- wherein when the first slice is the last one among the plurality of slices in the current picture, the tile index differential information for the first slice is not decoded from the bitstream.
7 more elements
A method of encoding a video, the method comprising:
- partitioning a current picture into a plurality of tile columns;
- partitioning the current picture into a plurality of tile rows;
- and
- encoding slice determination method information into a bitstream,
- wherein the slice determination method information is encoded into the bitstream when the current picture includes a plurality of tiles,
- wherein the slice determination method information indicates a slice determination method, the slice determination method comprising at least one of a raster scanning order mode or a rectangular shape mode,
- wherein in response to a determination that the slice determination method is the rectangular shape mode, the method further comprises:
- encoding slice number information into the bitstream, the slice number information specifying a number of slices included in the current picture;
- and
- determining, based on whether a first slice is the last one among a plurality of slices in the current picture or not, whether to encode tile index differential information for the first slice into the bitstream or not,
- wherein when the first slice is not the last one among the plurality of slices in the current picture, the tile index differential information for the first slice is encoded in the bitstream, the tile index differential information representing a difference between an index of a tile at a top-left position in the first slice and an index of a tile at a top-left position in a second slice, and
- wherein when the first slice is the last one among the plurality of slices in the current picture, encoding of the tile index differential information for the first slice is omitted.
9 more elements
A non-transitory computer readable medium having stored thereon a compressed video data, the compressed video data comprising:
- slice determination method information indicating a slice determination method for a current picture,
- wherein the slice determination method information is encoded into a bitstream when the current picture includes a plurality of tiles,
- wherein the slice determination method information indicates whether the slice determination method is a raster scanning order mode or a rectangular shape mode,
- wherein in response to a determination that the slice determination method is the rectangular shape mode, the compressed video data further comprises slice number information specifying a number of slices included in the current picture,
- wherein, based on whether a first slice is the last one among a plurality of slices in the current picture or not, it is determined whether tile index differential information for the first slice is present in the compressed video data or not,
- wherein when the first slice is not the last one among the plurality of slices in the current picture, the tile index differential information for the first slice is present in the compressed video data, the tile index differential information representing a difference between an index of a tile at a top-left position in the first slice and an index of a tile at a top-left position in a second slice, and
- wherein when the first slice is the last one among the plurality of slices in the current picture, the tile index differential information for the first slice is not present in the compressed video data.
4 more elements
Dependencies are inferred from the claim text.