Motion information propagation in video coding
Techniques are directed to a device for decoding a current block of video data in a current coding picture. The device may include a memory configured to store video data. The device may also include a processor configured to generate a first prediction block for the current block of the video data in the current picture according to an intra-prediction mode and generate a second prediction block for the current block of the video data in the current picture the picture according to an inter-prediction mode. The processor may be configured to generate motion information propagated from the second prediction block of the picture to the first prediction block, and use the motion information to obtain a final prediction block, then generate a reconstructed block based on a combination of the final prediction block and a residual block.
1. A device for decoding a current intra-coded block of video data in a current coding picture, the device comprising:
a memory configured to store the video data; and
a processor configured to:
generate motion information for the current intra-coded block of video data based on a propagation of motion information from neighboring blocks of the current intra-coded block;
determine if the neighboring blocks are intra-coded or inter-coded; and
inherit motion information, from the neighboring blocks which are inter-coded, with a higher priority over inheriting information from the neighboring blocks which are intra-coded.
2. The device of claim 1 , wherein the processor is further configured to construct a candidate list for decoding of a future inter-coded block based on the inherited motion information from the neighboring inter-coded blocks of the current intra-coded block.
3. The device of claim 2 , wherein the candidate list is a merge candidate list.
4. The device of claim 2 , wherein the candidate list is an advanced motion vector prediction list.
5. The device of claim 1 , wherein the current intra-coded block and the future inter-coded block are neighboring blocks.
6. The device of claim 5 , wherein the current intra-coded block and the future inter-coded block are spatially neighboring blocks.
7. The device of claim 5 , wherein the first prediction current intra-coded block and the future inter-coded block are temporally neighboring blocks.
8. The device of claim 5 , wherein the first intra-coded block and the future inter-coded block are neighboring blocks within the group of the same: slice or tile or LCU or ROW or picture.
9. The device of claim 5 , wherein the neighboring blocks are located in one or more previously coded frames.
10. The device of claim 1 , wherein the relative position of the future inter-coded block with respect to the current-intra-coded block is pre-defined.
11. The device of claim 1 , wherein the motion information propagated is conducted on a sub-block level.
12. A method of processing a current intra-coded block of video data of a picture, comprising:
generating motion information for the current intra-coded block of video data based on propagating motion information from neighboring blocks of the current intra-coded block;
determining if the neighboring blocks are intra-coded or inter-coded; and
inheriting motion information, from the neighboring blocks which are inter-coded, with a higher priority over inheriting information from the neighboring blocks which are intra-coded.
13. The method according to claim 12 , further comprising constructing a candidate list for decoding of a future inter-coded block based on the inherited motion information from the neighboring inter-coded blocks of the current intra-coded block.
14. The method according to claim 13 , wherein the candidate list is a merge candidate list.
15. The method according to claim 13 , wherein the candidate list is an advanced motion vector prediction list.
16. The method according to claim 13 , wherein the current intra-coded is a neighboring block of the future inter-coded block.
17. The method according to claim 16 , wherein the current intra-coded block and the future inter-coded block are spatially neighboring blocks.
18. The method according to claim 16 , wherein the current intra-coded block and the future inter-coded block are temporally neighboring blocks.
19. The method according to claim 16 , wherein the current intra-coded block and the future inter-coded block are neighboring blocks within the group of the same: slice, or tile or LCU or ROW or picture.
20. The method according to claim 16 , wherein the neighboring blocks are located in one or more previously coded frames.
21. The method according to claim 13 , wherein the relative position of the future inter-coded block with respect to the current intra-coded block is pre-defined.
22. The method according to claim 12 , wherein the motion information propagated is conducted on a sub-block level.
23. The method according to claim 12 , wherein the propagating of the motion information is performed after encoding a previous block.
24. The method according to claim 12 , wherein the propagating of the motion information is performed after decoding a previous block.
25. A device for encoding a current block of video data in a current coding picture, the device comprising:
a memory configured to store the video data; and
a processor configured to:
generate motion information for the current intra-coded block of video data based on a propagation of motion information from neighboring blocks of the current intra-coded block;
determine if the neighboring blocks are intra-coded or inter-coded; and
inherit motion information, from the neighboring blocks which are inter-coded, with a higher priority over inheriting information from the neighboring blocks which are intra-coded.
26. The device of claim 25 , wherein the processor is further configured to construct a candidate list for decoding of a future inter-coded block based on the inherited motion information from the neighboring inter-coded blocks of the current intra-coded block.
27. The device of claim 25 , wherein the candidate list an advanced motion vector prediction list or a merge candidate list.
28. A non-transitory computer readable medium having stored thereon instructions that when executed by a processor perform:
generate motion information for the current intra-coded block of video data based on a propagation of motion information from neighboring blocks of the current intra-coded block;
determine if the neighboring blocks are intra-coded or inter-coded; and
inherit motion information, from the neighboring blocks which are inter-coded, with a higher priority over inheriting information from the neighboring blocks which are intra-coded.