Inter reference picture set signaling and prediction on an electronic device

1. A method for signaling a reference picture set on an electronic device, comprising:

indicating a previously signaled reference picture set (RPS) corresponding to a current picture;

setting a first flag for a picture in the previously signaled RPS if the picture is a reference picture for the current picture; and

sending a bitstream.

2. The method of claim 1 , further comprising not sending a used by current picture flag for a current RPS.

3. The method of claim 1 , wherein the previously signaled RPS is signaled as an index indicating a set of previously signaled RPSs.

4. The method of claim 1 , wherein the previously signaled RPS comprises a corresponding value of another reference picture in the previously signaled RPS.

5. The method of claim 4 , wherein the corresponding value is a used by current picture flag value of a second reference picture in the previously signaled RPS.

6. The method of claim 4 , wherein the previously signaled RPS is indicated by a predicted short-term reference picture set present flag.

7. The method of claim 1 , wherein the first flag is a keep picture flag.

8. The method of claim 7 , wherein the keep picture flag is one of use_delta_flag[ ] and keep_pic_flag[ ].

9. The method of claim 1 , wherein the first flag indicates that a corresponding picture associated with the first flag in a candidate short-term RPS is included in the previously signaled RPS.

10. The method of claim 1 , wherein the current picture is in a first group of pictures (GOP) after a random access point.

11. The method of claim 1 , wherein the previously signaled RPS is signaled via a delete operation.

12. The method of claim 1 , wherein the previously signaled RPS is sent in one of a picture parameter set (PPS), a sequence parameter set (SPS), an adaptation parameter set (APS), a video parameter set (VPS) and a slice header (SH).

13. An electronic device for signaling a reference picture set, comprising:

a processor;

memory in electronic communication with the processor, wherein instructions stored in the memory are executable to:

indicate a previously signaled reference picture set (RPS) corresponding to a current picture;

set a first flag for a picture in the previously signaled RPS if the picture is a reference picture for the current picture; and

send a bitstream.

14. The electronic device of claim 13 , further comprising instructions being executable to not send a used by current picture flag for a current RPS.

15. The electronic device of claim 13 , wherein the first flag is a keep picture flag.

16. The electronic device of claim 15 , wherein the keep picture flag is one of use_delta_flag [ ] and keep_pic_flag [ ].

17. The electronic device of claim 13 , wherein the first flag indicates that a corresponding picture associated with the first flag in a candidate short-term RPS is included in the previously signaled RPS.

18. A method for decoding a reference picture set on an electronic device, comprising:

obtaining a bitstream;

obtaining a current picture;

obtaining a previously signaled reference picture set (RPS);

for a picture in the previously signaled RPS, obtaining a first flag indication if the picture is a reference picture for the current picture;

if the first flag is positive, determining a second flag from a corresponding value of the previously signaled RPS; and

decoding the current picture.

19. The method of claim 18 , wherein decoding the current picture is based on the second flag.

20. The method of claim 18 , wherein the first flag is a keep picture flag.

21. The method of claim 20 , wherein the keep picture flag is one of use_delta_flag[ ] and keep_pic_flag[ ].

22. The method of claim 18 , wherein the first flag indicates that a corresponding picture associated with the first flag in a candidate short-term RPS is included in the previously signaled RPS.

23. The method of claim 18 , wherein the second flag is a used by current picture flag.

24. The method of claim 23 , wherein the electronic device does not receive a used by current picture flag for a current RPS.

25. The method of claim 18 , wherein the corresponding value is obtained from the previously signaled RPS.

26. The method of claim 25 , wherein the corresponding value is a used by current picture flag value of a second reference picture in the previously signaled RPS.

27. The method of claim 25 , wherein the corresponding value is a Boolean value.

28. The method of claim 18 , wherein the current picture is in a first group of pictures (GOP) after a random access point.

29. The method of claim 18 , wherein the previously signaled RPS is signaled via a delete operation.

30. The method of claim 18 , wherein the previously signaled RPS is obtained from one of a picture parameter set (PPS), a sequence parameter set (SPS), an adaptation parameter set (APS), a video parameter set (VPS) and a slice header (SH).

31. An electronic device for decoding a reference picture set, comprising:

a processor;

memory in electronic communication with the processor, wherein instructions stored in the memory are executable to:

obtain a bitstream;

obtain a current picture;

obtain a previously signaled reference picture set (RPS);

for a picture in the previously signaled RPS, obtain a first flag indication if the picture is a reference picture for the current picture;

if the first flag is positive, determine a second flag from a corresponding value of the previously signaled RPS; and

decode the current picture.

32. The electronic device of claim 31 , wherein the first flag is a keep picture flag.

33. The electronic device of claim 32 , wherein the keep picture flag is one of use_delta_flag[ ] and keep_pic_flag[ ].

34. The electronic device of claim 31 , wherein the first flag indicates that a corresponding picture associated with the first flag in a candidate short-term RPS is included in the previously signaled RPS.