Method and apparatus for 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 memory;
one or more processors coupled to the memory and configured to:
determine a position for each non-overlapping region in a frame in a first sub-frame scan order, the first sub-frame scan order being based on a position of each non-overlapping region in the frame, the frame comprising:
a first sub-frame having a first set of non-overlapping regions;
a second sub-frame having a second set of non-overlapping regions; and
determine a sub-frame position of a single non-overlapping region from the frame position of the single non-overlapping region by:
determining a sub-frame from the first sub-frame or the second sub-frame that contains the single non-overlapping region; and
determining the sub-frame position of the single non-overlapping region based on a second sub-frame scan order, the second sub-frame scan order based on the position of the single non-overlapping region in the determined sub-frame.
2. The system of claim 1 , wherein the first sub-frame scan order is a raster-scan order in the frame.
3. The system of claim 2 , wherein the second sub-frame scan order is a raster-scan order in the determined sub-frame.
4. The system of claim 3 , wherein the first sub-frame is rectangular and the second sub-frame is rectangular.
5. A method, comprising:
determining a position for each non-overlapping region in a frame in a first sub-frame scan order, the first sub-frame scan order being based on a position of each non-overlapping region in the frame, the frame comprising:
a first sub-frame having a first set of non-overlapping regions;
a second sub-frame having a second set of non-overlapping regions; and
determining a sub-frame position of a single non-overlapping region from the frame position of the single non-overlapping region by:
determining a sub-frame from the first sub-frame or the second sub-frame that contains the single non-overlapping region; and
determining the sub-frame position of the single non-overlapping region based on a second sub-frame scan order, the second sub-frame scan order based on the position of the single non-overlapping region in the determined sub-frame.
6. The method of claim 5 , wherein the first sub-frame scan order is a raster-scan order in the frame.
7. The method of claim 6 , wherein the second sub-frame scan order is a raster-scan order in the determined sub-frame.
8. The system of claim 7 , wherein the first sub-frame is rectangular and the second sub-frame is rectangular.