REDUCING REFERENCE PICTURE SET SIGNAL OVERHEAD ON AN ELECTRONIC DEVICE

• US 20130188881A1
• Filed: 01/19/2012
• Published: 07/25/2013
• Est. Priority Date: 01/19/2012
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Sharp Laboratories of America Incorporated (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Zhao, Jie, Segall, Christopher A., Deshpande, Sachin G.
• Granted Patent: US 8,693,793 B2
• Time in Patent Office: Days
• US Class Current: 382/232
• CPC Class Codes: H04N 19/463 by compressing encoding parameters before transmission

Abstract

A method for reducing signal overhead on an electronic device is described. The method includes obtaining a picture. The method also includes encoding the picture. The method further includes indicating a reference picture set (RPS) corresponding to the picture based on an initialized index value. The method additionally includes sending a bitstream.

Claims

1. A method for reducing signal overhead on an electronic device, comprising:

obtaining a picture;

encoding the picture;

indicating a reference picture set (RPS) corresponding to the picture based on an initialized index value; and

sending a bitstream.

2. The method of claim 1, further comprising sending an indication to delete at least one reference pictures listed in a previously provided RPS.

3. The method of claim 2, wherein the indication to delete at least one reference picture listing in a previously provided RPS comprises a flag in a picture parameter set (PPS) and a bit field in a slice header of a picture.

4. The method of claim 2, wherein the indication to delete at least one reference picture listing in a previously provided RPS comprises a bit field in a slice header of a picture.

5. The method of claim 1, wherein indicating the RPS comprises processing a number of pictures corresponding to at least one positive index value.

6. The method of claim 5, wherein the index value is based on a relative negative RPS parameter.

7. The method of claim 5, wherein processing the number of pictures corresponding to at least one positive index is skipped when the index value is initialized.

8. An electronic device configured for reducing signal overhead, comprising:

a processor;

memory in electronic communication with the processor;

instructions stored in the memory, the instructions being executable to;

obtain a picture;

encode the picture;

indicate a reference picture set (RPS) corresponding to the picture based on an initialized index value; and

send a bitstream.

9. The electronic device of claim 8, further comprising sending an indication to delete at least one reference pictures listed in a previously provided RPS.

10. The electronic device of claim 9, wherein the indication to delete at least one reference picture listing in a previously provided RPS comprises a flag in a picture parameter set (PPS) and a bit field in a slice header of a picture.

11. The electronic device of claim 9, wherein the indication to delete at least one reference picture listing in a previously provided RPS comprises a bit field in a slice header of a picture.

12. The electronic device of claim 9, wherein indicating the RPS comprises processing a number of pictures corresponding to at least one positive index value.

13. The electronic device of claim 12, wherein the index value is based on a relative negative RPS parameter.

14. The electronic device of claim 12, wherein processing the number of pictures corresponding to at least one positive index is skipped when the index value is initialized.

15. A method for decoding a picture on an electronic device, comprising:

obtaining a bitstream;

obtaining a group of pictures (GOP) based on the bitstream;

deriving a partial reference picture set (RPS) from a full RPS based on at least one relative index value; and

decoding a picture.

16. The method of claim 15, wherein deriving a partial RPS comprises:

iterating over each picture in the GOP;

identifying a current picture, wherein the at least one relative index value corresponds to the current picture;

iterating over the at least one relative index value within the full RPS of the current picture;

determining whether a reference picture is available for the at least one relative index value; and

adding the picture to the partial RPS if the reference picture is available.

17. The method of claim 15, further comprising evaluating the partial RPS and inserting an additional picture.

18. The method of claim 15, further comprising creating an RPS template.

19. The method of claim 18, wherein creating the RPS template is based on a GOP size, a coding structure and rules obtained from the bitstream.

20. The method of claim 19, wherein the rules set temporal layers and the coding structure is at least one of a random access coding structure and a low delay coding structure.

21. The method of claim 18, further comprising obtaining a flag that indicates creating the RPS template.

22. An electronic device for decoding a picture, comprising:

a processor;

memory in electronic communication with the processor;

instructions stored in the memory, the instructions being executable to;

obtain a bitstream;

obtain a group of pictures (GOP) based on the bitstream;

derive a partial reference picture set (RPS) from a full RPS based on at least one relative index value; and

decode a picture.

23. The electronic device of claim 22, wherein deriving a partial RPS comprises:

iterating over each picture in the GOP;

identifying a current picture, wherein the at least one relative index value corresponds to the current picture;

iterating over the at least one relative index value within the full RPS of the current picture;

determining whether a reference picture is available for the at least one relative index value; and

adding the picture to the partial RPS if the reference picture is available.

24. The electronic device of claim 22, further comprising evaluating the partial RPS and inserting an additional picture.

25. The electronic device of claim 22, further comprising creating an RPS template.

26. The electronic device of claim 25, wherein creating the RPS template is based on a GOP size, a coding structure and rules obtained from the bitstream.

27. The electronic device of claim 26, wherein the rules set temporal layers and the coding structure is at least one of a random access coding structure and a low delay coding structure.

28. The electronic device of claim 25, further comprising obtaining a flag that indicates creating the RPS template.

29. A method for deleting a reference picture set (RPS) on an electronic device, comprising:

obtaining an indication to delete at least one reference picture listed in a previously obtained RPS; and

deleting the at least one reference picture in the previously obtained RPS.

30. The method of claim 29, further comprising detecting a missing picture in the RPS.

31. The method of claim 30, further comprising sending feedback indicating a missing picture.

32. The method of claim 31, wherein the indication comprises a flag in a picture parameter set (PPS) and a bit field in a slice header of a picture.

33. The method of claim 31, wherein the indication comprises a flag in a bit field in a slice header of a picture.

34. An electronic device for deleting a reference picture set (RPS), comprising:

a processor;

memory in electronic communication with the processor;

instructions stored in the memory, the instructions being executable to;

obtain an indication to delete at least one reference picture listed in a previously obtained RPS; and

delete the at least one reference picture in the previously obtained RPS.

35. The electronic device of claim 34, further comprising detecting a missing picture in the RPS.

36. The electronic device of claim 35, further comprising sending feedback indicating a missing picture.

37. The electronic device of claim 36, wherein the indication comprises a flag in a picture parameter set (PPS) and a bit field in a slice header of a picture.

38. The electronic device of claim 36, wherein the indication comprises a bit field in a slice header of a picture.