Processing a video frame having slices and tiles

A decoding device for decoding video comprising:

• circuitry configured to:
• (a) receive a bit-stream representative of the video frame which comprises a plurality of slices and a plurality of tiles, whereby, a tile is a rectangular region of the video frame which includes a plurality of rows of coding units arranged in a raster scan order;
• (b) decode a first syntax element from a picture parameter set of the video frame, the first syntax element indicating whether or not tiles are enabled for the video frame;
• (c) decode, in a case when the first syntax element indicates tiles are enabled for the video frame, a second syntax element from a slice header of at least one slice of the plurality of slices, indicating whether or not bit-stream location information of at least one tile of the plurality of tiles is transmitted in the slice header of the at least one slice;
• (d) decode, in a case when the second syntax element indicates bit-stream location of at least one tile of the plurality of tiles is transmitted in the slice header, a third syntax element from the slice header, the third syntax element indicating a bit-depth for a bit-stream location value, whereby the bit-depth represents the number of bits necessary to identify a largest bit-stream location value of any tile of the plurality of tiles;
• (e) decode, in a case when the second syntax element indicates bit-stream location of at least one tile of the plurality of tiles is transmitted in the slice header, and based on the third syntax element, a fourth syntax element from the slice header, the fourth syntax element indicating a bit-stream location of a tile of the plurality of tiles;
• and,
• (f) decode the video frame based at least in part on the fourth syntax element.

A non-transitory computer readable medium storing instructions which when executed cause a computer to perform a method, the method comprising:

• (a) receiving a bit-stream representative of the video frame which comprises a plurality of slices and a plurality of tiles, whereby, a tile is a rectangular region of the video frame which includes a plurality of rows of coding units arranged in a raster scan order;
• (b) decoding a first syntax element from a picture parameter set of the video frame, the first syntax element indicating whether or not tiles are enabled for the video frame;
• (c) decoding, in a case when the first syntax element indicates tiles are enabled for the video frame, a second syntax element from a slice header of at least one slice of the plurality of slices, indicating whether or not bit-stream location information of at least one tile of the plurality of tiles is transmitted in the slice header of the at least one slice;
• (d) decoding, in a case when the second syntax element indicates bit-stream location of at least one tile of the plurality of tiles is transmitted in the slice header, a third syntax element from the slice header, the third syntax element indicating a bit-depth for a bit-stream location value, whereby the bit-depth represents the number of bits necessary to identify a largest bit-stream location value of any tile of the plurality of tiles;
• (e) decoding, in a case when the second syntax element indicates bit-stream location of at least one tile of the plurality of tiles is transmitted in the slice header, and based on the bit-depth for a bit-stream location value, a fourth syntax element from the slice header, the fourth syntax element indicating a bit-stream location of a tile of the plurality of tiles;
• and,
• (f) decoding the video frame based at least in part on the fourth syntax element.

A method for encoding a video frame, the method comprising generating a bit-stream representative of the video frame where the video frame comprises a plurality of slices and a plurality of tiles, and whereby a tile is a rectangular region of the video frame which includes a plurality of rows of coding units arranged in a raster scan order, and the method further comprising:

• (a) encoding a first syntax element into a picture parameter set portion of the bitstream, the first syntax element indicating whether or not tiles are enabled for the video frame;
• (b) encoding, in a case when the first syntax element indicates tiles are enabled for the video frame, a second syntax element into a portion of the bitstream corresponding to a slice header of at least one slice of the plurality of slices, the second syntax element indicating whether or not bit-stream location information of at least one tile of the plurality of tiles is transmitted in the slice header of the at least one slice;
• (c) encoding, in a case when the second syntax element indicates bit-stream location of at least one tile of the plurality of tiles is transmitted in the slice header of the slice, a third syntax element into the slice header portion of the bitstream, the third syntax element indicating a bit-depth for a bit-stream location value, whereby the bit-depth represents the number of bits necessary to identify a largest bit-stream location value of any tile of the plurality of tiles;
• (d) encoding, in a case when the second syntax element indicates bit-stream location of at least one tile of the plurality of tiles is transmitted in the slice header of the slice, and based on the bit-depth for a bit-stream location value, a fourth syntax element into the slice header portion of the bitstream, the fourth syntax element indicating a bit-stream location of a tile of the plurality of tiles;
• and,
• (e) encoding the video frame.

An encoding device for encoding video comprising:

• circuitry configured to generate a bit-stream representative of the video frame where the video frame comprises a plurality of slices and a plurality of tiles, and whereby a tile is a rectangular region of the video frame which includes a plurality of rows of coding units arranged in a raster scan order, and the circuitry being further configured to:
• (a) encode a first syntax element into a picture parameter set portion of the bitstream, the first syntax element indicating whether or not tiles are enabled for the video frame;
• (b) encode, in a case when the first syntax element indicates tiles are enabled for the video frame, a second syntax element into a portion of the bitstream corresponding to a slice header of at least one slice of the plurality of slices, the second syntax element indicating whether or not bit-stream location information of at least one tile of the plurality of tiles is transmitted in the slice header of the at least one slice;
• (c) encode, in a case when the second syntax element indicates bit-stream location of at least one tile of the plurality of tiles is transmitted in the slice header of the slice, a third syntax element into the slice header portion of the bitstream, the third syntax element indicating a bit-depth for a bit-stream location value, whereby the bit-depth represents the number of bits necessary to identify a largest bit-stream location value of any tile of the plurality of tiles;
• (d) encode, in a case when the second syntax element indicates bit-stream location of at least one tile of the plurality of tiles is transmitted in the slice header of the slice, and based on the bit-depth for a bit-stream location value, a fourth syntax element into the slice header portion of the bitstream, the fourth syntax element indicating a bit-stream location of a tile of the plurality of tiles;
• and,
• (e) encode the video frame.

A non-transitory computer readable medium storing instructions which when executed cause a computer to perform a method, the method comprising generating a bit-stream representative of the video frame where the video frame comprises a plurality of slices and a plurality of tiles, and whereby a tile is a rectangular region of the video frame which includes a plurality of rows of coding units arranged in a raster scan order, and the method further comprising:

• (a) encoding a first syntax element into a picture parameter set portion of the bitstream, the first syntax element indicating whether or not tiles are enabled for the video frame;
• (b) encoding, in a case when the first syntax element indicates tiles are enabled for the video frame, a second syntax element into a portion of the bitstream corresponding to a slice header of at least one slice of the plurality of slices, the second syntax element indicating whether or not bit-stream location information of at least one tile of the plurality of tiles is transmitted in the slice header of the at least one slice;
• (c) encoding, in a case when the second syntax element indicates bit-stream location of at least one tile of the plurality of tiles is transmitted in the slice header of the slice, a third syntax element into the slice header portion of the bitstream, the third syntax element indicating a bit-depth for a bit-stream location value, whereby the bit-depth represents the number of bits necessary to identify a largest bit-stream location value of any tile of the plurality of tiles;
• (d) encoding, in a case when the second syntax element indicates bit-stream location of at least one tile of the plurality of tiles is transmitted in the slice header of the slice, and based on the bit-depth for a bit-stream location value, a fourth syntax element into the slice header portion of the bitstream, the fourth syntax element indicating a bit-stream location of a tile of the plurality of tiles;
• and,
• (e) encoding the video frame.