Granted Patent B2

US 12,395,622 · App. 17/479,482 · Granted Aug 19, 2025

Inventors: Geert Van der Auwera (Del Mar, CA); Luong Pham Van (San Diego, CA); Adarsh Krishnan Ramasubramonian (Irvine, CA); Marta Karczewicz (San Diego, CA)

Assignee: QUALCOMM INCORPORATED

H04N19/105H04N19/132H04N19/136H04N19/159H04N19/176H04N19/423

Abstract

Claims (99)

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

forming an inter-prediction block for a current luminance block of video data;

forming an intra-prediction block for the current luminance block of the video data;

determining whether a first neighboring block to the current luminance block is intra-prediction coded, wherein the first neighboring block comprises an above-neighboring block;

determining whether a second neighboring block to the current luminance block is intra-prediction coded, wherein the second neighboring block comprises a left-neighboring block;

determining, based on a combination of the determination of whether the first neighboring block is intra prediction coded and the determination of whether the second neighboring block is intra-prediction coded, a first weight;

determining, based on the combination of the determination of whether the first neighboring block is intra prediction coded and the determination of whether the second neighboring block is intra-prediction coded, a second weight;

applying the first weight to the inter-prediction block to form a first weighted inter-prediction block and applying the second weight to the intra-prediction block to form a second weighted intra-prediction block;

combining the first weighted inter-prediction block and the second weighted intra-prediction block to form a prediction block for the current luminance block; and

decoding the current luminance block using the prediction block.

2. The method of claim 1 , wherein:

based on the first neighboring block and the second neighboring block each being intra-predicted, determining the first weight and the second weight comprises determining the first weight to be equal to 3 and determining the second weight to be equal to 1;

based on one of the first neighboring block or the second neighboring block being intra-predicted and the other of the first neighboring block or the second neighboring block being inter-predicted, determining the first weight and the second weight comprises determining the first weight to be equal to 2 and determining the second weight to be equal to 2 ; or

based on the first neighboring block and the second neighboring block each being inter-predicted, determining the first weight and the second weight comprises determining the first weight to be equal to 1 and determining the second weight to be equal to 3.

3. The method of claim 1 , wherein:

based on the first neighboring block and the second neighboring block each being determined to be inter-prediction coded, determining the first weight and the second weight comprises determining the first weight to be greater than the second weight.

4. The method of claim 1 , wherein determining the first weight and the second weight comprises determining the first weight and the second weight based on dimensions of the current luminance block.

5. The method of claim 1 , wherein determining the first weight and the second weight comprises determining the first weight and the second weight based on inter mode information or motion information.

6. The method of claim 1 , wherein decoding the current luminance block comprises:

decoding a residual block for the current luminance block; and

combining samples of the residual block with samples of the prediction block.

7. The method of claim 1 , further comprising encoding the current luminance block prior to decoding the current luminance block, wherein encoding the current luminance block comprises:

subtracting samples of the prediction block from samples of the current luminance block to form a residual block; and

encoding the residual block.

8. A device for decoding video data, the device comprising:

a memory configured to store video data; and

one or more processors implemented in circuitry and configured to:

form an inter-prediction block for a current luminance block of video data;

form an intra-prediction block for the current luminance block of the video data;

determine whether a first neighboring block to the current luminance block is intra-prediction coded, wherein the first neighboring block comprises an above-neighboring block;

determine whether a second neighboring block to the current luminance block is intra-prediction coded, wherein the second neighboring block comprises a left-neighboring block;

determine, based on a combination of the determination of whether the first neighboring block is intra prediction coded and the determination of whether the second neighboring block is intra-prediction coded, a first weight;

determine, based on the combination of the determination of whether the first neighboring block is intra prediction coded and the determination of whether the second neighboring block is intra-prediction coded, a second weight:

apply the first weight to the inter-prediction block to form a first weighted inter-prediction block and apply the second weight to the intra-prediction block to form a second weighted intra-prediction block;

combine the first weighted inter-prediction block and the second weighted intra-prediction block to form a prediction block for the current luminance block; and

decode the current luminance block using the prediction block.

9. The device of claim 8 , wherein the one or more processors are configured to:

based on the first neighboring block and the second neighboring block each being intra-predicted, determine the first weight to be equal to 3 and determine the second weight to be equal to 1;

based on one of the first neighboring block or the second neighboring block being intra-predicted and the other of the first neighboring block or the second neighboring block being inter-predicted, determine the first weight to be equal to 2 and determine the second weight to be equal to 2; or

based on the first neighboring block and the second neighboring block each being inter-predicted, determine the first weight to be equal to 1 and determine the second weight to be equal to 3.

10. The device of claim 8 , wherein the one or more processors are configured to:

based on the first neighboring block and the second neighboring block each being determined to be inter-prediction coded, determine the first weight to be greater than the second weight; and

based on the first neighboring block and the second neighboring block each being determined to be intra-prediction coded, determine the first weight to be less than the second weight.

11. The device of claim 8 , wherein the one or more processors are further configured to determine the first weight and the second weight based on dimensions of the current luminance block.

12. The device of claim 8 , wherein the one or more processors are further configured to determine the first weight and the second weight based on inter mode information or motion information.

13. The device of claim 8 , wherein to decode the current luminance block, the one or more processors are configured to:

decode a residual block for the current luminance block; and

combine samples of the residual block with samples of the prediction block.

14. The device of claim 8 , wherein the one or more processors are further configured to encode the current luminance block prior to decoding the current luminance block, wherein to encode the current luminance block, the one or more processors are configured to:

subtract samples of the prediction block from samples of the current luminance block to form a residual block; and

encode the residual block.

15. The device of claim 8 , further comprising a display configured to display the decoded video data.

16. The device of claim 8 , wherein the device comprises one or more of a camera, a computer, a mobile device, a broadcast receiver device, or a set-top box.

17. A non-transitory, computer-readable storage medium having stored thereon instructions that, when executed, cause a processor to:

form an inter-prediction block for a current luminance block of video data;

form an intra-prediction block for the current luminance block of the video data;

determine whether a first neighboring block to the current luminance block is intra-prediction coded, wherein the first neighboring block comprises an above-neighboring block;

determine whether a second neighboring block to the current luminance block is intra-prediction coded, wherein the second neighboring block comprises a left-neighboring block;

determine, based on a combination of the determination of whether the first neighboring block is intra prediction coded and the determination of whether the second neighboring block is intra-prediction coded, a first weight;

determine, based on the combination of the determination of whether the first neighboring block is intra prediction coded and the determination of whether the second neighboring block is intra-prediction coded, a second weight;

apply the first weight to the inter-prediction block to form a first weighted inter-prediction block and apply the second weight to the intra-prediction block to form a second weighted intra-prediction block;

combine the first weighted inter-prediction block and the second weighted intra-prediction block to form a prediction block for the current luminance block; and

decode the current luminance block using the prediction block.

18. The non-transitory, computer-readable storage medium of claim 17 , wherein the instructions that cause the processor to determine the first weight and the second weight comprise instructions that cause the processor to:

based on the first neighboring block and the second neighboring block each being intra-predicted, determine the first weight to be equal to 3 and determine the second weight to be equal to 1;

based on one of the first neighboring block or the second neighboring block being intra-predicted and the other of the first neighboring block or the second neighboring block being inter-predicted, determine the first weight to be equal to 2 and determine the second weight to be equal to 2; or

based on the first neighboring block and the second neighboring block each being inter-predicted, determine the first weight to be equal to 1 and determining the second weight to be equal to 3.

19. The non-transitory, computer-readable storage medium of claim 17 , wherein the instructions that cause the processor to determine the first weight and the second weight comprise instructions that cause the processor to:

based on the first neighboring block and the second neighboring block each being determined to be inter-prediction coded, determine the first weight to be greater than the second weight; and

based on the first neighboring block and the second neighboring block each being determined to be intra-prediction coded, determine the first weight to be less than the second weight.

20. The non-transitory, computer-readable storage medium of claim 17 , wherein the instructions that cause the processor to decode the current luminance block comprise instructions that cause the processor to:

decode a residual block for the current luminance block; and

combine samples of the residual block with samples of the prediction block.

21. The non-transitory, computer-readable storage medium of claim 17 , further comprising instructions that cause the processor to encode the current luminance block prior to decoding the current luminance block, wherein the instructions that cause the processor to encode the current luminance block comprise instructions that cause the processor to:

subtract samples of the prediction block from samples of the current luminance block to form a residual block; and

encode the residual block.

22. A device for decoding video data, the device comprising:

means for forming an inter-prediction block for a current luminance block of video data;

means for forming an intra-prediction block for the current luminance block of the video data;

means for determining whether a first neighboring block to the current luminance block is intra-prediction coded, wherein the first neighboring block comprises an above-neighboring block;

means for determining whether a second neighboring block to the current luminance block is intra-prediction coded, wherein the second neighboring block comprises a left-neighboring block;

means for determining, based on a combination of the determination of whether the first neighboring block is intra prediction coded and the determination of whether the second neighboring block is intra-prediction coded, a first weight;

means for determining, based on the combination of the determination of whether the first neighboring block is intra prediction coded and the determination of whether the second neighboring block is intra-prediction coded, a second weight;

means for applying the first weight to the inter-prediction block to form a first weighted inter-prediction block and the second weight to the intra-prediction block to form a second weighted intra-prediction block;

means for combining the first weighted inter-prediction block and the second weighted intra-prediction block to form a prediction block for the current luminance block; and

means for decoding the current luminance block using the prediction block.

23. The device of claim 22 , wherein the means for determining the first weight and the second weight comprises:

means for determining the first weight to be equal to 3 and determining the second weight to be equal to 1 based on the first neighboring block and the second neighboring block each being intra-predicted;

means for determining the first weight to be equal to 2 and determining the second weight to be equal to 2 based on one of the first neighboring block or the second neighboring block being intra-predicted and the other of the first neighboring block or the second neighboring block being inter-predicted; and

means for determining the first weight to be equal to 1 and determining the second weight to be equal to 3 based on the first neighboring block and the second neighboring block each being inter-predicted.

24. The device of claim 22 , wherein the means for determining the first weight and the second weight comprises:

means for determining the first weight to be greater than the second weight based on the first neighboring block and the second neighboring block each being determined to be inter-prediction coded; and

means for determining the first weight to be less than the second weight based on the first neighboring block and the second neighboring block each being determined to be intra-prediction coded.

25. The device of claim 22 , wherein the means for decoding the current luminance block comprises:

means for decoding a residual block for the current luminance block; and

means for combining samples of the residual block with samples of the prediction block.

26. The device of claim 22 , further comprising means for encoding the current luminance block prior to decoding the current luminance block, wherein the means for encoding the current luminance block comprises:

means for subtracting samples of the prediction block from samples of the current luminance block to form a residual block; and

means for encoding the residual block.

Assignments (1)

Continuity (4)

References Cited (68)