Granted Patent B2

US 12,262,005 · App. 17/751,491 · Granted Mar 25, 2025

Inventors: Yi-Wen Chen (Beijing, CN); Xiaoyu Xiu (Beijing, CN); Tsung-Chuan Ma (Beijing, CN); Hong-Jheng Jhu (Beijing, CN); Xianglin Wang (Beijing, CN); Bing Yu (Beijing, CN)

Assignee: BEIJING DAJIA INTERNET INFORMATION TECHNOLOGY CO., LTD.

H04N19/117H04N19/105H04N19/176H04N19/30H04N19/82

Abstract

Claims (57)

1. A method of decoding video data, the method comprising:

decoding a first coding block and a second coding block that shares a common edge with the first coding block on a first picture, wherein the decoding the first coding block and the second coding block includes reconstructing a first residual block for the first coding block and a second residual block for the second coding block, respectively;

determining that the first picture has a first resolution, a first reference picture corresponding to the first coding block has a second resolution, and a second reference picture corresponding to the second coding block has a third resolution;

deriving a deblocking strength (bS) value based, at least in part, on the first resolution, second resolution, and the third resolution; and

performing in-loop filtering on the reconstructed first residual block and the reconstructed second residual block using a deblocking filter in accordance with the derived bS value;

wherein deriving the bS value based, at least in part, on the first resolution, the second resolution, and the third resolution comprises:

adjusting a threshold on motion vector difference, MVD, between the first coding block and the second coding block;

in accordance with a determination that the second resolution is different from the third resolution, deriving the bS value based on the adjusted MVD threshold.

2. The method of claim 1 , wherein the first resolution is different from the second resolution or the third resolution, and the first coding block and the second coding block use different interpolation filters.

3. The method of claim 1 , wherein deriving the bS value based in part on the first resolution, the second resolution, and the third resolution further comprises:

in accordance with a determination that the second resolution is different from the third resolution, setting the bS value to a first predefined value.

4. The method of claim 1 , wherein deriving the bS value based, at least in part, on the first resolution, the second resolution, and the third resolution further comprises:

in accordance with a determination that the first resolution is different from the second resolution or the first resolution is different from the third resolution, setting the bS value to a second predefined value.

5. The method of claim 1 , wherein

deriving the bS value based on the adjusted MVD threshold comprise: setting the bS value to a fourth predefined value when the MVD between the first coding block and the second coding block is greater than or equal to the adjusted MVD threshold.

6. The method of claim 1 , wherein deriving the bS value based, at least in part, on the first resolution, the second resolution, and the third resolution further comprises:

in accordance with a determination that the first resolution is different from a resolution signaled in a sequence parameter set (SPS) corresponding to a video sequence including the first picture, setting the bS value based on different MVD thresholds.

7. The method of claim 1 , wherein deriving the bS value based, at least in part, on the first resolution, the second resolution, and the third resolution further comprises:

in accordance with a determination that the first resolution is different from a resolution signaled in a sequence parameter set (SPS) corresponding to a video sequence including the first picture, setting the bS value to a third predefined value.

8. An electronic apparatus comprising:

one or more processing units;

memory coupled to the one or more processing units; and

a plurality of programs stored in the memory that, when executed by the one or more processing units, cause the electronic apparatus to perform a method of decoding video data comprising:

decoding a first coding block and a second coding block that shares a common edge with the first coding block on a first picture, wherein the decoding the first coding block and the second coding block includes reconstructing a first residual block for the first coding block and a second residual block for the second coding block, respectively;

determining that the first picture has a first resolution, a first reference picture corresponding to the first coding block has a second resolution, and a second reference picture corresponding to the second coding block has a third resolution;

deriving a deblocking strength (bS) value based, at least in part, on the first resolution, second resolution, and the third resolution; and

performing in-loop filtering on the reconstructed first residual block and the reconstructed second residual block using a deblocking filter in accordance with the derived bS value;

wherein deriving the bS value based, at least in part, on the first resolution, the second resolution, and the third resolution comprises:

adjusting a threshold on motion vector difference, MVD, between the first coding block and the second coding block;

in accordance with a determination that the second resolution is different from the third resolution, deriving the bS value based on the adjusted MVD threshold.

9. The electronic apparatus of claim 8 , wherein the first resolution is different from the second resolution or the third resolution, and the first coding block and the second coding block use different interpolation filters.

10. The electronic apparatus of claim 8 , wherein deriving the bS value based, at least in part, on the first resolution, the second resolution, and the third resolution further comprises:

in accordance with a determination that the second resolution is different from the third resolution, setting the bS value to a first predefined value.

11. The electronic apparatus of claim 8 , wherein deriving the bS value based, at least in part, on the first resolution, the second resolution, and the third resolution further comprises:

in accordance with a determination that the first resolution is different from the second resolution or the first resolution is different from the third resolution, setting the bS value to a second predefined value.

12. The electronic apparatus of claim 8 , wherein

deriving the bS value based on the adjusted MVD threshold comprise:

setting the bS value to a fourth predefined value when the MVD between the first coding block and the second coding block is greater than or equal to the adjusted MVD threshold.

13. The electronic apparatus of claim 8 , wherein deriving the bS value based, at least in part, on the first resolution, the second resolution, and the third resolution further comprises:

in accordance with a determination that the first resolution is different from a resolution signaled in a sequence parameter set (SPS) corresponding to a video sequence including the first picture, setting the bS value based on different MVD thresholds.

14. The electronic apparatus of claim 8 , wherein deriving the bS value based, at least in part, on the first resolution, the second resolution, and the third resolution further comprises:

in accordance with a determination that the first resolution is different from a resolution signaled in a sequence parameter set (SPS) corresponding to a video sequence including the first picture, setting the bS value to a third predefined value.

15. A non-transitory computer readable storage medium storing a plurality of programs for execution by an electronic apparatus having one or more processing units, wherein the plurality of programs, when executed by the one or more processing units, cause the electronic apparatus to perform a method of decoding video data comprising:

decoding a first coding block and a second coding block that shares a common edge with the first coding block on a first picture, wherein the decoding the first coding block and the second coding block includes reconstructing a first residual block for the first coding block and a second residual block for the second coding block, respectively;

determining that the first picture has a first resolution, a first reference picture corresponding to the first coding block has a second resolution, and a second reference picture corresponding to the second coding block has a third resolution;

deriving a deblocking strength (bS) value based, at least in part, on the first resolution, second resolution, and the third resolution; and

performing in-loop filtering on the reconstructed first residual block and the reconstructed second residual block using a deblocking filter in accordance with the derived bS value;

wherein deriving the bS value based, at least in part, on the first resolution, the second resolution, and the third resolution comprises:

adjusting a threshold on motion vector difference, MVD, between the first coding block and the second coding block;

in accordance with a determination that the second resolution is different from the third resolution, deriving the bS value based on the adjusted MVD threshold.

16. The non-transitory computer readable storage medium of claim 15 , wherein the first resolution is different from the second resolution or the third resolution, and the first coding block and the second coding block use different interpolation filters.

17. The non-transitory computer readable storage medium of claim 15 , wherein deriving the bS value based, at least in part, on the first resolution, the second resolution, and the third resolution further comprises:

in accordance with a determination that the second resolution is different from the third resolution, setting the bS value to a first predefined value; or

in accordance with a determination that the first resolution is different from the second resolution or the first resolution is different from the third resolution, setting the bS value to a second predefined value; or

in accordance with a determination that the first resolution is different from a resolution signaled in a sequence parameter set (SPS) corresponding to a video sequence including the first picture, setting the bS value to a third predefined value; or

in accordance with a determination that the first resolution is different from a resolution signaled in a sequence parameter set (SPS) corresponding to a video sequence including the first picture, setting the bS value based on different MVD thresholds.

18. The non-transitory computer readable storage medium of claim 15 , wherein deriving the bS value based on the adjusted MVD threshold comprise: setting the bS value to a fourth predefined value when the MVD between the first coding block and the second coding block is greater than or equal to the adjusted MVD threshold.

Assignments (1)

Continuity (3)

References Cited (13)