Granted Patent B2

US 12,256,074 · App. 18/472,486 · Granted Mar 18, 2025

Inventors: Kiran Misra (Vancouver, WA); Christopher Segall (Camas, WA)

Assignee: VELOS MEDIA, LLC

H04N19/124H04N19/105H04N19/117H04N19/13H04N19/159H04N19/174H04N19/176H04N19/43H04N19/436H04N19/44H04N19/513H04N19/55H04N19/61H04N19/615H04N19/63H04N19/70H04N19/91H04N19/172H04N19/184

Abstract

Claims (68)

1. A method for decoding a video frame, the method comprising:

receiving a bitstream representative of the video frame, where the video frame comprises a plurality of slices and a plurality of tiles,

wherein the plurality of slices comprise independently codable portions of the video frame, and

wherein the plurality of tiles comprise rectangular regions of the video frame that include a plurality of rows of coding units arranged in a raster scan order;

decoding a first syntax element from a picture parameter set of the video frame, the first syntax element indicating that the plurality of tiles is present in the video frame;

decoding, based on the first syntax element indicating that the plurality of tiles is present in the video frame, a second syntax element from a slice header of at least one slice of the plurality of slices, the second syntax element indicating that a bitstream location information for at least one tile of the plurality of tiles is transmitted in the slice header of the at least one slice;

decoding, based on the second syntax element indicating that the bitstream location information for the at least one tile of the plurality of tiles is transmitted in the slice header, a third syntax element from the slice header of the at least one slice, the third syntax element indicating a bit length for a bitstream location value, whereby the bit length represents a number of bits used to identify the bitstream location value; and

decoding, based on the second syntax element indicating that the bitstream location information for the at least one tile of the plurality of tiles is transmitted in the slice header, and based on the bit length for the bitstream location value, the bitstream location value for a tile of the plurality of tiles.

2. The method of claim 1 , wherein the bitstream location value indicates a byte location of the tile in the bitstream.

3. The method of claim 1 further comprising:

decoding the tile by decoding the plurality of rows of coding units in the tile in the raster scan order.

4. A decoding device for decoding a video frame comprising:

circuitry configured to:

receive a bitstream representative of the video frame, where the video frame comprises a plurality of slices and a plurality of tiles,

wherein the plurality of slices comprise independently codable portions of the video frame, and

wherein the plurality of tiles comprise rectangular regions of the video frame that include a plurality of rows of coding units arranged in a raster scan order;

decode a first syntax element from a picture parameter set of the video frame, the first syntax element indicating that the plurality of tiles is present in the video frame;

decode, based on the first syntax element indicating that the plurality of tiles is present in the video frame, a second syntax element from a slice header of at least one slice of the plurality of slices, the second syntax element indicating that a bitstream location information for at least one tile of the plurality of tiles is transmitted in the slice header of the at least one slice;

decode, based on the second syntax element indicating that the bitstream location information for the at least one tile of the plurality of tiles is transmitted in the slice header, a third syntax element from the slice header of the at least one slice, the third syntax element indicating a bit length for a bitstream location value, whereby the bit length represents a number of bits used to identify the bitstream location value; and

decode, based on the second syntax element indicating that the bitstream location information for the at least one tile of the plurality of tiles is transmitted in the slice header, and based on the bit length for the bitstream location value, the bitstream location value for a tile of the plurality of tiles.

5. The decoding device of claim 4 , wherein the bitstream location value indicates a byte location of the tile in the bitstream.

6. The decoding device of claim 4 , wherein the circuitry is further configured to:

decode the tile by decoding the plurality of rows of coding units included in the tile in the raster scan order.

7. A non-transitory computer readable medium storing instructions which when executed cause a computer to perform operations comprising:

receiving a bitstream representative of a video frame, where the video frame comprises a plurality of slices and a plurality of tiles,

wherein the plurality of slices comprise independently codable portions of the video frame, and

wherein the plurality of tiles comprise rectangular regions of the video frame that include a plurality of rows of coding units arranged in a raster scan order;

decoding a first syntax element from a picture parameter set of the video frame, the first syntax element indicating that the plurality of tiles is present in the video frame;

decoding, based on the first syntax element indicating that the plurality of tiles is present in the video frame, a second syntax element from a slice header of at least one slice of the plurality of slices, the second syntax element indicating that a bitstream location information for at least one tile of the plurality of tiles is transmitted in the slice header of the at least one slice;

decoding, based on the second syntax element indicating that the bitstream location information for the at least one tile of the plurality of tiles is transmitted in the slice header, a third syntax element from the slice header of the at least one slice, the third syntax element indicating a bit length for a bitstream location value, whereby the bit length represents a number of bits used to identify the bitstream location value; and

decoding, based on the second syntax element indicating that the bitstream location information for the at least one tile of the plurality of tiles is transmitted in the slice header, and based on the bit length for the bitstream location value, the bitstream location value for a tile of the plurality of tiles.

8. The non-transitory computer readable medium of claim 7 , wherein the bitstream location value indicates a byte location of the tile in the bitstream.

9. The non-transitory computer readable medium of claim 7 , the operations further comprising:

decoding the tile by decoding the plurality of rows of coding units in the tile in the raster scan order.

10. A method for encoding a video frame, the method comprising:

generating a bitstream representative of the video frame, where the video frame comprises a plurality of slices and a plurality of tiles,

wherein the plurality of slices comprise independently codable portions of the video frame, and

wherein the plurality of tiles comprise rectangular regions of the video frame that include a plurality of rows of coding units arranged in a raster scan order;

encoding a first syntax element into a picture parameter set portion of the bitstream, the first syntax element indicating that the plurality of tiles is present in the video frame;

encoding, based on the first syntax element indicating that the plurality of tiles is present in 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 that a bitstream location information for at least one tile of the plurality of tiles is transmitted in the slice header of the at least one slice;

encoding, based on the second syntax element indicating that the bitstream location information for the at least one tile of the plurality of tiles is transmitted in the slice header, a third syntax element into the slice header of the bitstream, the third syntax element indicating a bit length for a bitstream location value, whereby the bit length represents a number of bits used to identify the bitstream location value; and

encoding, based on the second syntax element indicating that the bitstream location information for the at least one tile of the plurality of tiles is transmitted in the slice header, and based on the bit length for the bitstream location value, the bitstream location value for a tile of the plurality of tiles.

11. The method of claim 10 , wherein the bitstream location value indicates a byte location of the tile in the bitstream.

12. The method of claim 10 further comprising:

encoding the video frame by encoding the plurality of rows of coding units in each tile of the video frame in the raster scan order.

13. An encoding device for encoding a video frame comprising:

circuitry configured to:

generate a bitstream representative of the video frame, where the video frame comprises a plurality of slices and a plurality of tiles,

wherein the plurality of slices comprise independently codable portions of the video frame, and

wherein the plurality of tiles comprise rectangular regions of the video frame that include a plurality of rows of coding units arranged in a raster scan order;

encode a first syntax element into a picture parameter set portion of the bitstream, the first syntax element indicating whether or not a plurality of tiles are used in the video frame;

encode, based on the first syntax element indicating that the plurality of tiles is present in 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 that a bitstream location information for at least one tile of the plurality of tiles is transmitted in the slice header of the at least one slice;

encode, based on the second syntax element indicating that the bitstream location information for the at least one tile of the plurality of tiles is transmitted in the slice header, a third syntax element into the slice header of the bitstream, the third syntax element indicating a bit length for a bitstream location value, whereby the bit length represents a number of bits used to identify the bitstream location value; and

encode, based on the second syntax element indicating that bitstream location information for the at least one tile of the plurality of tiles is transmitted in the slice header, and based on the bit length for the bitstream location value, the bitstream location value for a tile of the plurality of tiles.

14. The encoding device of claim 13 , wherein the bitstream location value indicates a byte location of the tile in the bitstream.

15. The encoding device of claim 13 , wherein the circuitry is further configured to:

encode the video frame by encoding the plurality of rows of coding units included in each tile of the video frame in the raster scan order.

16. A non-transitory computer readable medium storing instructions which when executed cause a computer to perform operations comprising:

generating a bitstream representative of a video frame where the video frame comprises a plurality of slices and a plurality of tiles,

wherein the plurality of slices comprise independently codable portions of the video frame, and

wherein the plurality of tiles comprise rectangular regions of the video frame that include a plurality of rows of coding units arranged in a raster scan order;

encoding a first syntax element into a picture parameter set portion of the bitstream, the first syntax element indicating that the plurality of tiles is present in the video frame;

encoding, based on the first syntax element indicating that the plurality of tiles is present in 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 that a bitstream location information for at least one tile of the plurality of tiles is transmitted in the slice header of the at least one slice;

encoding, based on the second syntax element indicating that the bitstream location information for the at least one tile of the plurality of tiles is transmitted in the slice header, a third syntax element into the slice header of the bitstream, the third syntax element indicating a bit length for a bitstream location value, whereby the bit length represents a number of bits used to identify the bitstream location value; and

encoding, based on the second syntax element indicating that the bitstream location information for the at least one tile of the plurality of tiles is transmitted in the slice header, and based on the bit length for the bitstream location value, the bitstream location value for a tile of the plurality of tiles.

17. The non-transitory computer readable medium of claim 16 , wherein the bitstream location value indicates a byte location of the tile in the bitstream.

18. The non-transitory computer readable medium of claim 15 , the operations further comprising:

encoding the video frame by encoding the plurality of rows of coding units in each tile in the video frame in the raster scan order.

Assignments (3)

Continuity (7)

References Cited (138)