Device and method for scalable coding of video information

1. An apparatus configured to code video information, the apparatus comprising:

a memory configured to store video data associated with a base layer (BL) and an enhancement layer (EL), the EL comprising an EL block and a co-located BL block co-located with respect to the EL block, the co-located BL block having bi-directional motion information associated therewith; and

a processor in communication with the memory, the processor configured to:

determine that a size of the EL block satisfies a threshold condition;

convert the bi-directional motion information associated with the co-located BL block to uni-directional motion information by causing one or more vectors of the bi-directional motion information to refer to one or more reference pictures from only one of reference picture list 0 and reference picture list 1; and

code the EL block using the uni-directional motion information.

2. The apparatus of claim 1 , wherein the processor is further configured to:

in response to determining that the size of the EL block is one of first sizes, use less than all of the motion information associated with the co-located BL block to code the EL block; and

in response to determining that the size of the EL block is not one of the first sizes, refrain from using any motion information associated with the co-located BL block to code the EL block.

3. The apparatus of claim 1 , wherein the processor is further configured to provide an indication that the EL block cannot be coded using the motion information associated with the co-located BL block.

4. The apparatus of claim 1 , wherein the threshold size is 8×8.

5. The apparatus of claim 1 , wherein the motion information associated with the co-located BL block comprises one or more of a motion vector, a prediction direction, and a reference index.

6. The apparatus of claim 2 , wherein the processor is further configured to perform motion compensation to code the EL block using said less than all of the motion information associated with the co-located BL block.

7. The apparatus of claim 1 , wherein the processor is further configured to determine a partition type of a coding unit (CU) in the enhancement layer based on the motion information of a plurality of EL blocks within the CU.

8. The apparatus of claim 1 , wherein the processor is further configured to code the EL block based on one or more blocks of a neighboring coding unit (CU) or a neighboring prediction unit (PU), wherein the one or more blocks are located adjacent to the EL block.

9. A method of coding video information, the method comprising:

storing video data associated with a base layer (BL) and an enhancement layer (EL), the EL comprising an EL block and a co-located BL block co-located with respect to the EL block, the co-located BL block having bi-directional motion information associated therewith;

determining that a size of the EL block satisfies a threshold condition;

converting the bi-directional motion information associated with the co-located BL block to uni-directional motion information by causing one or more vectors of the bi-directional motion information to refer to one or more reference pictures from only one of reference picture list 0 and reference picture list 1; and

coding the EL block using the uni-directional motion information.

10. The method of claim 9 , further comprising, in response to determining that the size of the EL block is one of first sizes, using less than all of the motion information associated with the co-located BL block to code the EL block.

11. The method of claim 9 , further comprising providing an indication that the EL block cannot be coded using the motion information associated with the co-located BL block.

12. The method of claim 9 , wherein the threshold size is 8×8.

13. The method of claim 9 , wherein the motion information associated with the co-located BL block comprises one or more of a motion vector, a prediction direction, and a reference index.

14. The method of claim 10 , wherein motion compensation is performed to code the EL block using said less than all of the motion information associated with the co-located BL block.

15. The method of claim 9 , further comprising determining a partition type of a coding unit (CU) in the enhancement layer based on the motion information of a plurality of EL blocks within the CU.

16. The method of claim 9 , wherein the EL block is coded based on one or more blocks of a neighboring coding unit (CU) or a neighboring prediction unit (PU), wherein the one or more blocks are located adjacent to the EL block.

17. A non-transitory computer readable medium includes code that, when executed, causes an apparatus to

store video data associated with a base layer (BL) and an enhancement layer (EL), the EL comprising an EL block and a co-located BL block co-located with respect to the EL block, the co-located BL block having bi-directional motion information associated therewith;

determine that a size of the EL block satisfies a threshold condition;

convert the bi-directional motion information associated with the co-located BL block to uni-directional motion information by causing one or more vectors of the bi-directional motion information to refer to one or more reference pictures from only one of reference picture list 0 and reference picture list 1; and

code the EL block using the uni-directional motion information.

18. The non-transitory computer readable medium of claim 17 , wherein the code further causes the apparatus to provide an indication that the EL block cannot be coded using the motion information associated with the co-located BL block.

19. A video coding device configured to code video information includes:

means for storing video data associated with a base layer (BL) and an enhancement layer (EL), the EL comprising an EL block and a co-located BL block co-located with respect to the EL block, the co-located BL block having bi-directional motion information associated therewith;

means for determining that a size of the EL block satisfies a threshold condition;

means for converting the bi-directional motion information associated with the co-located BL block to uni-directional motion information by causing one or more vectors of the bi-directional motion information to refer to one or more reference pictures from only one of reference picture list 0 and reference picture list 1; and

means for coding the EL block using the uni-directional motion information.

20. The video coding device of claim 19 , further comprising means for providing an indication that the EL block cannot be coded using the motion information associated with the co-located BL block.