Method and system for processing luma and chroma signals.

Abstract

This invention provides a system and method for processing video content. [Solution] The method of the present disclosure may include receiving data representing a first block and a second block in a picture, the data including a plurality of chroma samples associated with the first block and a plurality of luma samples associated with the second block, determining the mean value of the plurality of luma samples associated with the second block, determining a chroma scale factor for the first block based on the mean value, and processing the plurality of chroma samples associated with the first block using the chroma scale factor.

Claims

1. A method performed by a computer for processing video content, Receiving data representing a first block and a second block within a picture, wherein the data includes a plurality of chroma samples associated with the first block and a plurality of luma samples associated with the second block. Determining the average value of the plurality of luma samples related to the second block, Based on the average value, determine the chromascale factor for the first block, and Processing the plurality of chromatic samples related to the first block using the chromatic scale factor. Methods performed by computers, including those mentioned above.

2. The method according to claim 1, wherein the plurality of luma samples relating to the second block include a plurality of reconstructed luma samples on the left boundary of the second block or on the upper boundary of the second block.

3. Determining whether the first luma sample among the plurality of luma samples related to the second block is outside the boundary of the picture, and In response to the determination that the first luma sample is outside the boundary of the picture, the value of the first luma sample is set to the value of the second luma sample among the plurality of luma samples that are within the boundary of the picture. The method according to claim 2, further comprising:

4. Determining whether the first luma sample among the plurality of luma samples related to the second block is outside the boundary of the picture, and In response to the determination that the first luma sample is outside the boundary of the picture, the value of the first luma sample is set to the value of the second luma sample among the plurality of luma samples that are on the boundary of the picture. The method according to claim 3, further comprising:

5. The method according to claim 4, wherein the boundary of the picture is one of the right boundary of the picture and the bottom boundary of the picture.

6. The method according to claim 1, wherein the second block is a coded tree block, a transformation unit, or a virtual pipeline data unit, and the size of the virtual pipeline data unit is less than or equal to the size of the coded tree unit of the picture.

7. The method according to claim 6, wherein the virtual pipeline data unit is a non-overlapping unit within the picture.

8. The method according to claim 1, wherein the plurality of chromatic samples associated with the first block include a plurality of chromatic residual samples within the first block.

9. The method according to claim 1, wherein the first block is a target chromat block, and the second block is a luma block corresponding to the target chromat block.

10. A system for processing video content, Memory for storing a set of instructions, The system includes at least one processor, the at least one processor having, Receiving data representing a first block and a second block within a picture, wherein the data includes a plurality of chroma samples associated with the first block and a plurality of luma samples associated with the second block. Determining the average value of the plurality of luma samples related to the second block, Based on the average value, determine the chromascale factor for the first block, and Processing the plurality of chromatic samples related to the first block using the chromatic scale factor. It is configured to execute the set of commands so as to perform the following: system.

11. The system according to claim 10, wherein the plurality of luma samples related to the second block include a plurality of reconstructed luma samples on the left boundary of the second block or on the upper boundary of the second block.

12. The at least one processor in the system Determining whether the first luma sample among the plurality of luma samples related to the second block is outside the boundary of the picture, and In response to the determination that the first luma sample is outside the boundary of the picture, the value of the first luma sample is set to the value of the second luma sample among the plurality of luma samples that are within the boundary of the picture. The system according to claim 11, configured to execute the set of instructions in order to further perform the following.

13. The system according to claim 12, wherein the second luma sample lies on the boundary of the picture.

14. The system according to claim 13, wherein the boundary of the picture is one of the right boundary of the picture and the bottom boundary of the picture.

15. The system according to claim 10, wherein the second block is a coded tree block, a transformation unit, or a virtual pipeline data unit, and the size of the virtual pipeline data unit is less than or equal to the size of the coded tree unit of the picture.

16. The system according to claim 15, wherein the virtual pipeline data unit is a non-overlapping unit within the picture.

17. The system according to claim 10, wherein the plurality of chromatic samples associated with the first block include a plurality of chromatic residual samples within the first block.

18. The system according to claim 10, wherein the first block is a target chromat block, and the second block is a chromat block corresponding to the target chromat block.

19. A non-temporary computer-readable medium for storing a set of instructions, wherein the set of instructions is executable by at least one processor of the computer system to cause the computer system to perform a method for processing video content, Receiving data representing a first block and a second block within a picture, wherein the data includes a plurality of chroma samples associated with the first block and a plurality of luma samples associated with the second block. Determining the average value of the plurality of luma samples related to the second block, Based on the average value, determine the chromascale factor for the first block, and Processing the plurality of chromatic samples related to the first block using the chromatic scale factor. Non-temporary computer-readable media, including [specific examples of such media].

20. The non-temporary computer-readable medium according to claim 19, wherein the plurality of luma samples related to the second block include a plurality of reconstructed luma samples on the left boundary of the second block or on the upper boundary of the second block.

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