Method and apparatus for acquiring information about sub-units split from picture
AssigneeSK Telecom Co., Ltd.
InventorsJae Il Kim, Sun Young Lee, Se Hoon Son
Life of this patent
Estimating the term…
Abstract
Disclosed is a method for obtaining information on sub-units partitioned from a picture. The method comprises: decoding, from a bitstream, CTU size information indicating the size of coding tree units (CTUs) within the picture; decoding, from the bitstream, sub-picture partition information expressing sub-pictures within the picture in units of the CTU sizes; decoding, from the bitstream, partition information related to partition of the picture into one or more tiles; and decoding, from the bitstream, partition information related to partition of the picture into one or more slices.
Claims6
A video decoding method comprising:
- decoding, from a bitstream, information on sub-units partitioned from a picture;
- and
- reconstructing the picture based on the information on the sub-units,
- wherein the decoding of the information on the sub-units comprises:
- decoding CTU size information indicating the size of coding tree units (CTUs) within the picture from the bitstream,
- decoding sub-picture partition information for partitioning the picture to one or more sub-pictures each of which is comprised of at least one slice from the bitstream, wherein the sub-picture partition information is defined by the unit of the CTU size,
- decoding tile partition information related to partition of the picture into one or more tiles from the bitstream,
- decoding slice partition information related to partition of the picture into one or more slices from the bitstream, and
- decoding, from the bitstream, an enable flag indicating whether filtering is performed at a boundary of the one or more slices, based on a slice mode of the one or more slices among a plurality of slice modes including a rectangular slice mode and a raster-scan slice mode.
A video encoding method comprising:
- partitioning a picture into sub-units to encode the picture;
- and
- encoding information on the sub-units,
- wherein the encoding of the information on the sub-units comprises:
- encoding CTU size information indicating the size of coding tree units (CTUs) within the picture,
- encoding sub-picture partition information for partitioning the picture to one or more sub-pictures each of which is comprised of at least one slice, wherein the sub-picture partition information is defined by the unit of the CTU size,
- encoding tile partition information related to partition of the picture into one or more tiles,
- encoding slice partition information related to partition of the picture into one or more slices, and
- encoding an enable flag indicating whether filtering is performed at a boundary of the one or more slices, based on a slice mode of the one or more slices among a plurality of slice modes including a rectangular slice mode and a raster-scan slice mode.
An apparatus for transmitting a bitstream containing encoded video data, the apparatus comprising at least one processor configured to:
- generate the bitstream, by partitioning a picture into sub-units to encode the picture and encoding information on the sub-units;
- and
- transmit the bitstream to a video decoding apparatus, wherein the at least one processor is configured to encode the information on the sub-units by:
- encoding CTU size information indicating the size of coding tree units (CTUs) within the picture,
- encoding sub-picture partition information for partitioning the picture to one or more sub-pictures each of which is comprised of at least one slice, wherein the sub-picture partition information is defined by the unit of the CTU size,
- encoding tile partition information related to partition of the picture into one or more tiles,
- encoding slice partition information related to partition of the picture into one or more slices, and
- encoding an enable flag indicating whether filtering is performed at a boundary of the one or more slices, based on a slice mode of the one or more slices among a plurality of slice modes including a rectangular slice mode and a raster-scan slice mode.
Dependencies are inferred from the claim text.