Sub-picture based raster scanning coding order
A method and apparatus for sub-picture based raster scanning coding order. The method includes dividing an image into even sub-pictures, and encoding parallel sub-pictures on multi-cores in raster scanning order within sub-pictures, wherein from core to core, coding of the sub-picture is independent around sub-picture boundaries, and wherein within a core, coding of a sub-picture is at least one of dependent or independent around sub-picture boundaries.
1 . A system comprising:
a receiver configured to receive a bit stream including a coded representation of a picture,
wherein the picture includes a first sub-picture including a first set of non-overlapping regions,
wherein the picture includes a second sub-picture including a second set of non-overlapping regions,
wherein the first sub-picture is a left adjacent neighbor of the second sub-picture, and
wherein data for the first set of non-overlapping regions in the bit stream immediately precedes data for the second set of non-overlapping regions in the bit stream; and
one or more processors coupled to the receiver and configured to:
decode the data for the first set of non-overlapping regions from the bit stream; and
decode the data for the second set of non-overlapping regions from the bit stream.
2 . The system of claim 1 ,
wherein the first sub-picture is rectangular, and
wherein the second sub-picture is rectangular.
3 . The system of claim 1 , wherein the one or more processors are configured to decode the data for the second set of non-overlapping regions from the bit stream after decoding data for all non-overlapping regions in the first set of the non-overlapping regions.
4 . The system of claim 1 , wherein the one or more processors include:
a first processing core configured to decode the data for the first set of non-overlapping regions; and
a second processing core configured to decode the data for the second set of non-overlapping regions.
5 . The system of claim 1 ,
wherein the first sub-picture comprises a first tile in the picture, and
wherein the second sub-picture comprises a second tile in the picture.
6 . The system of claim 1 , wherein the first sub-picture and the second sub-picture are signaled sequentially in the bit stream.
7 . The system of claim 1 , wherein coding of the first sub-picture and coding of the second sub-picture are independent around sub-picture boundaries.
8 . The system of claim 1 ,
wherein the data for the first set of non-overlapping regions is present in the bit stream in a sub-picture-based raster scan order, and
wherein the data for the second set of non-overlapping regions is present in the bit stream in a sub-picture-based raster scan order.
9 . The system of claim 1 ,
wherein the picture includes a third sub-picture including a third set of non-overlapping regions,
wherein the second sub-picture is a left adjacent neighbor of the third sub-picture, and
wherein data for the second set of non-overlapping regions in the bit stream immediately precedes data for the third set of non-overlapping regions in the bit stream.
10 . The system of claim 9 , wherein the one or more processors are configured to decode the data for the third set of non-overlapping regions from the bit stream after decoding data for all non-overlapping regions in the second set of the non-overlapping regions.
11 . The system of claim 9 , wherein the first sub-picture, the second sub-picture, and the third sub-picture are signaled sequentially in the bit stream.
12 . A system comprising:
a memory configured to store uncompressed data for a picture,
wherein the picture includes a first sub-picture including a first set of non-overlapping regions,
wherein the picture includes a second sub-picture including a second set of non-overlapping regions, and
wherein the first sub-picture is a left adjacent neighbor of the second sub-picture; and
one or more processors coupled to the memory and configured to:
encode data for the first set of non-overlapping regions in a bit stream; and
encode data for the second set of non-overlapping regions in the bit stream,
wherein the data for the first set of non-overlapping regions in the bit stream immediately precedes the data for the second set of non-overlapping regions in the bit stream.
13 . The system of claim 12 , wherein the one or more processors include:
a first processing core configured to encode the data for the first set of non-overlapping regions into the bit stream; and
a second processing core configured to encode the data for the second set of non-overlapping regions into the bit stream.
14 . The system of claim 12 ,
wherein the picture includes a third sub-picture including a third set of non-overlapping regions,
wherein the second sub-picture is a left adjacent neighbor of the third sub-picture,
wherein the one or more processors are configured to encode data for the third set of non-overlapping regions in the bit stream, and
wherein the data for the second set of non-overlapping regions in the bit stream immediately precedes the data for the third set of non-overlapping regions in the bit stream.
15 . The system of claim 14 , wherein the one or more processors are configured to signal the first sub-picture, the second sub-picture, and the third sub-picture sequentially in the bit stream.
16 . A method comprising:
receiving a bit stream including a coded representation of a picture,
wherein the picture includes a first sub-picture including a first set of non-overlapping regions,
wherein the picture includes a second sub-picture including a second set of non-overlapping regions,
wherein the first sub-picture is a left adjacent neighbor of the second sub-picture, and
wherein data for the first set of non-overlapping regions in the bit stream immediately precedes data for the second set of non-overlapping regions in the bit stream;
decoding the data for the first set of non-overlapping regions from the bit stream; and
decoding the data for the second set of non-overlapping regions from the bit stream.
17 . The method of claim 16 , wherein decoding the data for the second set of non-overlapping regions from the bit stream occurs after decoding data for all non-overlapping regions in the first set of the non-overlapping regions.
18 . The method of claim 16 , wherein the first sub-picture and the second sub-picture are signaled sequentially in the bit stream.
19 . The method of claim 16 ,
wherein the picture includes a third sub-picture including a third set of non-overlapping regions,
wherein the second sub-picture is a left adjacent neighbor of the third sub-picture, and
wherein data for the second set of non-overlapping regions in the bit stream immediately precedes data for the third set of non-overlapping regions in the bit stream.
20 . The method of claim 19 , wherein the first sub-picture, the second sub-picture, and the third sub-picture are signaled sequentially in the bit stream.