IP Library Granted Patent US 8,693,793
Granted Patent B2
US 8,693,793 · App. 13/354,277 · Granted Apr 8, 2014

Reducing reference picture set signal overhead on an electronic device

Inventors: Jie Zhao (Vancouver, WA); Christopher A. Segall (Camas, WA); Sachin G. Deshpande (Camas, WA)
Assignee: Sharp Laboratories of America, Inc.
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Quick Facts
Patent No.
US 8,693,793
App. No.
13/354,277
Granted
Apr 8, 2014
Kind
B2
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 (65)

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;

sending an indication to delete at least one reference picture listed in a previously provided RPS, wherein the indication comprises a bit field in a slice header of a picture; and

sending a bitstream.

2. The method of claim 1 , wherein the indication to delete at least one reference picture listing in a previously provided RPS further comprises a flag in a picture parameter set (PPS) of a picture.

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

4. The method of claim 3 , wherein the index value is based on a relative negative RPS parameter.

5. The method of claim 3 , wherein processing the number of pictures corresponding to at least one positive index is skipped when the index value is initialized.

6. 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;

send an indication to delete at least one reference picture listed in a previously provided RPS, wherein the indication comprises a bit field in a slice header of a picture; and

send a bitstream.

7. The electronic device of claim 6 , wherein the indication to delete at least one reference picture listing in a previously provided RPS further comprises a flag in a picture parameter set (PPS) of a picture.

8. The electronic device of claim 6 , wherein indicating the RPS comprises processing a number of pictures corresponding to at least one positive index value.

9. The electronic device of claim 8 , wherein the index value is based on a relative negative RPS parameter.

10. The electronic device of claim 8 , wherein processing the number of pictures corresponding to at least one positive index is skipped when the index value is initialized.

11. 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, 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; and

decoding a picture.

12. The method of claim 11 , further comprising evaluating the partial RPS and inserting an additional picture.

13. 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, 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; and

decode a picture.

14. The electronic device of claim 13 , further comprising evaluating the partial RPS and inserting an additional picture.

15. 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.

16. The method of claim 15 , further comprising detecting a missing picture in the RPS.

17. The method of claim 16 , further comprising sending feedback indicating a missing picture.

18. The method of claim 17 , wherein the indication comprises a flag in a picture parameter set (PPS) and a bit field in a slice header of a picture.

19. The method of claim 17 , wherein the indication comprises a flag in a bit field in a slice header of a picture.

20. 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.

21. The electronic device of claim 20 , further comprising detecting a missing picture in the RPS.

22. The electronic device of claim 21 , further comprising sending feedback indicating a missing picture.

23. The electronic device of claim 22 , wherein the indication comprises a flag in a picture parameter set (PPS) and a bit field in a slice header of a picture.

24. The electronic device of claim 22 , wherein the indication comprises a bit field in a slice header of a picture.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 14, 2015
From: SHARP KABUSHIKI KAISHA
To: HUAWEI TECHNOLOGIES CO., LTD.
Reel/Frame 037278/0445 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 8, 2014
From: SHARP LABORATORIES OF AMERICA INC.
To: SHARP KABUSHIKI KAISHA
Reel/Frame 033265/0510 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 6, 2012
From: ZHAO, JIE; SEGALL, CHRISTOPHER A.; DESHPANDE, SACHIN G.
To: SHARP LABORATORIES OF AMERICA, INC.
Reel/Frame 027658/0939 →
Continuity (1)
Related Publication 20130188881A1 · Jul 25, 2013