RANDOM ACCESS AND SIGNALING OF LONG-TERM REFERENCE PICTURES IN VIDEO CODING

Abstract

A video coder can be configured to code a random access point (RAP) picture and code one or more decodable leading pictures (DLPs) for the RAP picture such that all pictures that are targeted for discard precede the DLPs associated with the RAP picture in display order.

A video coder can be configured to code a random access point (RAP) picture and code one or more decodable leading pictures (DLPs) for the RAP picture such that all pictures that are targeted for discard precede the DLPs associated with the RAP picture in display order.

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Not Available	27/03/2018	ISLD-201806-033	QUALCOMM INC	S1 TS Number: TS 101 154 Version No: Illustrative part: ---- Release: + -				No	Family Member

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US2014003537A1	Not Available	27/03/2018	ISLD-201806-033	QUALCOMM INC	S1 TS Number: TS 101 154 Version No: ---- Section No: ---- Release : ---- + -	Yes	Basis Patent
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Technologies

Signal Processing

Product

Not Available

Use Cases

Mobile TV/ Radio

Services

Not Available

Claim

1. A method of decoding video data, the method comprising:', 'decoding a random access point (RAP) picture; and', 'decoding one or more decodable leading pictures (DLPs) for the RAP picture such that all pictures that are targeted for discard precede the DLPs associated with the RAP picture in display order.

2. The method of claim 1, wherein the DLPs comprise one or more pictures having display order values that indicate a display order earlier than a display order value of the RAP picture and having decoding order values that indicate a decoding order later than a decoding order value of the RAP picture, and wherein the one or more pictures do not refer to video data earlier than the RAP picture in decoding order.

3. The method of claim 1, further comprising decoding one or more leading pictures relative to the RAP picture such that all of the leading pictures for the RAP picture precede all trailing pictures for the RAP picture in decoding order, wherein the trailing pictures comprise pictures having display order values that are greater than a display order value of the RAP picture.

4. The method of claim 1, wherein the RAP picture comprises one of a clean random access (CRA) picture and a broken link access (BLA) picture.

5. The method of claim 4, wherein any picture preceding a CRA or BLA picture in decoding order precedes any DLP picture associated with the CRA picture or the BLA picture in display order.

6. The method of claim 1, the method further comprising:', 'decoding one or more leading pictures associated with the RAP picture, wherein the leading pictures precede the RAP picture in display order value and succeed the RAP picture in decoding order; and', 'decoding one or more trailing pictures associated with the RAP picture such that all of the leading pictures precede all the trailing pictures in decoding order, wherein the trailing pictures succeed the RAP picture both in display order value and in decoding order.

7. The method of claim 1, the method further comprising:', 'decoding one or more tagged for discard (TFD) pictures associated with the RAP picture, wherein the one or more TFD pictures precede the RAP picture in display order value and succeed the RAP picture in decoding order and refer to video data earlier than the RAP picture in the decoding order.

8. The method of claim 7, wherein decoding the one or more DLPs for the RAP picture comprises decoding the one or more DLPs associated with the RAP picture such that all the TFD pictures precede the DLPs in display order, wherein the DLPs precede the RAP picture in display order and succeed the RAP picture in the decoding order and do not refer to video data earlier than the RAP picture in the decoding order.

9. The method of claim 1, the method further comprising:', 'decoding one or more pictures that precede the RAP picture in a decoding order; and', 'wherein decoding the one or more DLPs comprises decoding the one or more', 'DLPs associated with the RAP picture such that all pictures that precede the RAP picture in decoding order also precede all the DLPs in display order, wherein the DLPs precede the RAP picture in display order and succeed the RAP picture in decoding order and do not refer to video data earlier than the RAP picture in decoding order

10. The method of claim 1, wherein decoding the RAP picture is performed as part of a video encoding process

11. A device for decoding video data, the device comprising:', 'a video decoder configured to decode a random access point (RAP) picture; and', 'decode one or more decodable leading pictures (DLPs) for the RAP picture such that all pictures that are targeted for discard precede the DLPs associated with the RAP picture in display order

12. The device of claim 1 1, wherein the DLPs comprise one or more pictures having display order values that indicate a display order earlier than a display order value of the RAP picture and having decoding order values that indicate a decoding order later than a decoding order value of the RAP picture, and wherein the one or more pictures do not refer to video data earlier than the RAP picture in decoding order

13. The device of claim 1 1, wherein the video decoder is further configured to decode one or more leading pictures relative to the RAP picture such that all of the leading pictures for the RAP picture precede all trailing pictures for the RAP picture in decoding order, wherein the trailing pictures comprise pictures having display order values that are greater than a display order value of the RAP picture

14. The device of claim 1 1, wherein the RAP picture comprises one of a clean random access (CRA) picture and a broken link access (BLA) picture

15. The device of claim 14, wherein any picture preceding a CRA or BLA picture in decoding order precedes any DLP picture associated with the CRA picture or the BLA picture in display order

16. The device of claim 1 1, wherein the video decoder is further configured to decode one or more leading pictures associated with the RAP picture, wherein the leading pictures precede the RAP picture in display order value and succeed the RAP picture in decoding order; and decode one or more trailing pictures associated with the RAP picture such that all of the leading pictures precede all the trailing pictures in decoding order, wherein the trailing pictures succeed the RAP picture both in display order value and in decoding order

17. The device of claim 1 1, wherein the video decoder is further configured to decode one or more tagged for discard (TFD) pictures associated with the RAP picture, wherein the one or more TFD pictures precede the RAP picture in display order value and succeed the RAP picture in decoding order and refer to video data earlier than the RAP picture in the decoding order

18. The device of claim 17, wherein the video decoder is configured to decode the one or more DLPs for the RAP picture by decoding the one or more DLPs associated with the RAP picture such that all the TFD pictures precede the DLPs in display order, wherein the DLPs precede the RAP picture in display order and succeed the RAP picture in the decoding order and do not refer to video data earlier than the RAP picture in the decoding order

19. The device of claim 1 1, wherein the video decoder is further configured to decode one or more pictures that precede the RAP picture in a decoding order; and wherein the video decoder is configured to decode the one or more DLPs by decoding the one or more DLPs associated with the RAP picture such that all pictures that precede the RAP picture in decoding order also precede all the DLPs in display order, wherein the DLPs precede the RAP picture in display order and succeed the RAP picture in decoding order and do not refer to video data earlier than the RAP picture in decoding order.

20. The device of claim 11, wherein the device comprises at least one of:', 'an integrated circuit;', 'a microprocessor; and,', 'a wireless communication device that includes the video decoder.

21. An apparatus for decoding video data, the apparatus comprising:', 'means for decoding a random access point (RAP) picture; and', 'means for decoding one or more decodable leading pictures (DLPs) for the RAP picture such that all pictures that are targeted for discard precede the DLPs associated with the RAP picture in display order.

22. The apparatus of claim 21, wherein the DLPs comprise one or more pictures having display order values that indicate a display order earlier than a display order value of the RAP picture and having decoding order values that indicate a decoding order later than a decoding order value of the RAP picture, and wherein the one or more pictures do not refer to video data earlier than the RAP picture in decoding order.

23. The apparatus of claim 21, further comprising means for decoding one or more leading pictures relative to the RAP picture such that all of the leading pictures for the RAP picture precede all trailing pictures for the RAP picture in decoding order, wherein the trailing pictures comprise pictures having display order values that are greater than a display order value of the RAP picture.

24. The apparatus of claim 21, wherein the RAP picture comprises one of a clean random access (CRA) picture and a broken link access (BLA) picture.

25. The apparatus of claim 24, wherein any picture preceding a CRA or BLA picture in decoding order precedes any DLP picture associated with the CRA picture or the BLA picture in display order.

26. The apparatus of claim 21, the apparatus further comprising:', 'means for decoding one or more leading pictures associated with the RAP', 'picture, wherein the leading pictures precede the RAP picture in display order value and succeed the RAP picture in decoding order; and means for decoding one or more trailing pictures associated with the RAP', 'picture such that all of the leading pictures precede all the trailing pictures in decoding order, wherein the trailing pictures succeed the RAP picture both in display order value and in decoding order.

27. The apparatus of claim 21, the apparatus further comprising:', 'means for decoding one or more tagged for discard (TFD) pictures associated with the RAP picture, wherein the one or more TFD pictures precede the RAP picture in display order value and succeed the RAP picture in decoding order and refer to video data earlier than the RAP picture in the decoding order.

28. The apparatus of claim 27, wherein the means for decoding the one or more DLPs for the RAP picture comprises means for decoding the one or more DLPs associated with the RAP picture such that all the TFD pictures precede the DLPs in display order, wherein the DLPs precede the RAP picture in display order and succeed the RAP picture in the decoding order and do not refer to video data earlier than the RAP picture in the decoding order.

29. The apparatus of claim 21, the apparatus further comprising:', 'means for decoding one or more pictures that precede the RAP picture in a decoding order; and', 'wherein the means for decoding the one or more DLPs comprises means for decoding the one or more DLPs associated with the RAP picture such that all pictures that precede the RAP picture in decoding order also precede all the DLPs in display order, wherein the DLPs precede the RAP picture in display order and succeed the RAP picture in decoding order and do not refer to video data earlier than the RAP picture in decoding order.

30. A computer readable storage medium storing instructions that when executed by one or more processors cause the one or more processors to:', 'decode a random access point (RAP) picture; and', 'decode one or more decodable leading pictures (DLPs) for the RAP picture such that all pictures that are targeted for discard precede the DLPs associated with the RAP picture in display order.

31. A method of encoding video data, the method comprising:', 'encoding a random access point (RAP) picture; and', 'encoding one or more decodable leading pictures (DLPs) for the RAP picture such that all pictures that are targeted for discard precede the DLPs associated with the RAP picture in display order.

32. The method of claim 31 , wherein the DLPs comprise one or more pictures having display order values that indicate a display order earlier than a display order value of the RAP picture and having decoding order values that indicate a decoding order later than a decoding order value of the RAP picture, and wherein the one or more pictures do not refer to video data earlier than the RAP picture in decoding order.

33. The method of claim 31 , further comprising encoding one or more leading pictures relative to the RAP picture such that all of the leading pictures for the RAP picture precede all trailing pictures for the RAP picture in decoding order, wherein the trailing pictures comprise pictures having display order values that are greater than a display order value of the RAP picture.

34. The method of claim 31 , wherein the RAP picture comprises one of a clean random access (CRA) picture and a broken link access (BLA) picture.

35. The method of claim 34, wherein any picture preceding a CRA or BLA picture in decoding order precedes any DLP picture associated with the CRA picture or the BLA picture in display order.

36. The method of claim 31 , the method further comprising:', 'encoding one or more leading pictures associated with the RAP picture, wherein the leading pictures precede the RAP picture in display order value and succeed the RAP picture in decoding order; and', 'encoding one or more trailing pictures associated with the RAP picture such that all of the leading pictures precede all the trailing pictures in decoding order, wherein the trailing pictures succeed the RAP picture both in display order value and in decoding order.

37. The method of claim 31 , the method further comprising:', 'encoding one or more tagged for discard (TFD) pictures associated with the RAP picture, wherein the one or more TFD pictures precede the RAP picture in display order value and succeed the RAP picture in decoding order and refer to video data earlier than the RAP picture in the decoding order.

38. The method of claim 37, wherein encoding the one or more DLPs for the RAP picture comprises encoding the one or more DLPs associated with the RAP picture such that all the TFD pictures precede the DLPs in display order, wherein the DLPs precede the RAP picture in display order and succeed the RAP picture in the decoding order and do not refer to video data earlier than the RAP picture in the decoding order.

39. The method of claim 31 , the method further comprising:', 'encoding one or more pictures that precede the RAP picture in a decoding order; and', 'wherein encoding the one or more DLPs comprises encoding the one or more', 'DLPs associated with the RAP picture such that all pictures that precede the RAP picture in decoding order also precede all the DLPs in display order, wherein the DLPs precede the RAP picture in display order and succeed the RAP picture in decoding order and do not refer to video data earlier than the RAP picture in decoding order.

40. The method of claim 31 , wherein encoding the RAP picture is performed as part of a video encoding process.

41. A device for encoding video data, the device comprising:', 'a video encoder configured to encode a random access point (RAP) picture; and encode one or more decodable leading pictures (DLPs) for the RAP picture such that all pictures that are targeted for discard precede the DLPs associated with the RAP picture in display order.

42. The device of claim 41 , wherein the DLPs comprise one or more pictures having display order values that indicate a display order earlier than a display order value of the RAP picture and having decoding order values that indicate a decoding order later than a decoding order value of the RAP picture, and wherein the one or more pictures do not refer to video data earlier than the RAP picture in decoding order.

43. The device of claim 41, wherein the video encoder is further configured to encode one or more leading pictures relative to the RAP picture such that all of the leading pictures for the RAP picture precede all trailing pictures for the RAP picture in decoding order, wherein the trailing pictures comprise pictures having display order values that are greater than a display order value of the RAP picture.

44. The device of claim 41, wherein the RAP picture comprises one of a clean random access (CRA) picture and a broken link access (BLA) picture.

45. The device of claim 44, wherein any picture preceding a CRA or BLA picture in decoding order precedes any DLP picture associated with the CRA picture or the BLA picture in display order.

46. The device of claim 41, wherein the video encoder is further configured to encode one or more leading pictures associated with the RAP picture, wherein the leading pictures precede the RAP picture in display order value and succeed the RAP picture in decoding order; and encode one or more trailing pictures associated with the RAP picture such that all of the leading pictures precede all the trailing pictures in decoding order, wherein the trailing pictures succeed the RAP picture both in display order value and in decoding order.

47. The device of claim 41, wherein the video encoder is further configured to encode one or more tagged for discard (TFD) pictures associated with the RAP picture, wherein the one or more TFD pictures precede the RAP picture in display order value and succeed the RAP picture in decoding order and refer to video data earlier than the RAP picture in the decoding order.

48. The device of claim 47, wherein the video encoder is configured to encode the one or more DLPs for the RAP picture comprises encoding the one or more DLPs associated with the RAP picture such that all the TFD pictures precede the DLPs in display order, wherein the DLPs precede the RAP picture in display order and succeed the RAP picture in the decoding order and do not refer to video data earlier than the RAP picture in the decoding order.

49. The device of claim 41 , wherein the video encoder is further configured to encode one or more pictures that precede the RAP picture in a decoding order; and wherein the video encoder is configured to encode the one or more DLPs by encoding the one or more DLPs associated with the RAP picture such that all pictures that precede the RAP picture in decoding order also precede all the DLPs in display order, wherein the DLPs precede the RAP picture in display order and succeed the RAP picture in decoding order and do not refer to video data earlier than the RAP picture in decoding order.

50. The device of claim 41, wherein the device comprises at least one of:', 'an integrated circuit;', 'a microprocessor; and,', 'a wireless communication device that includes the video encoder.

51. An apparatus for encoding video data, the apparatus comprising:', 'means for encoding a random access point (RAP) picture; and', 'means for encoding one or more decodable leading pictures (DLPs) for the RAP picture such that all pictures that are targeted for discard precede the DLPs associated with the RAP picture in display order.

52. The apparatus of claim 51 , wherein the DLPs comprise one or more pictures having display order values that indicate a display order earlier than a display order value of the RAP picture and having decoding order values that indicate a decoding order later than a decoding order value of the RAP picture, and wherein the one or more pictures do not refer to video data earlier than the RAP picture in decoding order.

53. The apparatus of claim 51 , further comprising means for encoding one or more leading pictures relative to the RAP picture such that all of the leading pictures for the RAP picture precede all trailing pictures for the RAP picture in decoding order, wherein the trailing pictures comprise pictures having display order values that are greater than a display order value of the RAP picture.

54. The apparatus of claim 51 , wherein the RAP picture comprises one of a clean random access (CRA) picture and a broken link access (BLA) picture.

55. The apparatus of claim 54, wherein any picture preceding a CRA or BLA picture in decoding order precedes any DLP picture associated with the CRA picture or the BLA picture in display order.

56. The apparatus of claim 51 , the apparatus further comprising:', 'means for encoding one or more leading pictures associated with the RAP', 'picture, wherein the leading pictures precede the RAP picture in display order value and succeed the RAP picture in decoding order; and means for encoding one or more trailing pictures associated with the RAP', 'picture such that all of the leading pictures precede all the trailing pictures in decoding order, wherein the trailing pictures succeed the RAP picture both in display order value and in decoding order.

57. The apparatus of claim 51 , the apparatus further comprising:', 'means for encoding one or more tagged for discard (TFD) pictures associated with the RAP picture, wherein the one or more TFD pictures precede the RAP picture in display order value and succeed the RAP picture in decoding order and refer to video data earlier than the RAP picture in the decoding order.

58. The apparatus of claim 57, wherein the means for encoding the one or more DLPs for the RAP picture comprises means for encoding the one or more DLPs associated with the RAP picture such that all the TFD pictures precede the DLPs in display order, wherein the DLPs precede the RAP picture in display order and succeed the RAP picture in the decoding order and do not refer to video data earlier than the RAP picture in the decoding order.

59. The apparatus of claim 51 , the apparatus further comprising:', 'means for encoding one or more pictures that precede the RAP picture in a decoding order; and', 'wherein the means for encoding the one or more DLPs comprises means for encoding the one or more DLPs associated with the RAP picture such that all pictures that precede the RAP picture in decoding order also precede all the DLPs in display order, wherein the DLPs precede the RAP picture in display order and succeed the RAP picture in decoding order and do not refer to video data earlier than the RAP picture in decoding order.

60. A computer readable storage medium storing instructions that when executed by one or more processors cause the one or more processors to:', 'encode a random access point (RAP) picture; and', 'encode one or more decodable leading pictures (DLPs) for the RAP picture such that all pictures that are targeted for discard precede the DLPs associated with the RAP picture in display order.']

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EP2868083A1

Title

RANDOM ACCESS AND SIGNALING OF LONG-TERM REFERENCE PICTURES IN VIDEO CODING

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RANDOM ACCESS AND SIGNALING OF LONG-TERM REFERENCE PICTURES IN VIDEO CODING

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