A DECODER AND CORRESPONDING METHODS FOR PARTITIONING IMAGE INFORMATION FROM SIGNALS TO SEGMENTS

Abstract

A coding method implemented by a decoding device and a decoder is described. The method comprises: obtaining a bitstream for a current image; obtaining a number of tiles in a tile row of the current image; obtaining a value of a direction of a current segment, the current segment being contained in the current image; obtaining a tileX value according to the value of the direction of the current segment; analyzing an indication value for a segment width of the bitstream for the current image, when a difference value between the tile quality in the tile row of the current image and the tileX value is not equal to a first threshold.

Claims

1. An encoding method implemented by a decoding device, the method being characterized in that it comprises: obtaining a bitstream for a current image; obtaining a number of tiles in a tile row of the current image; obtaining a value of a direction of a segment of the current image; obtaining a tileX value according to the value of the segment direction, wherein the tileX value indicates a horizontal ratio in the tile index; analyzing an indication value for a segment width of the bitstream for the current image, where a difference value between the tile quality in the tile row of the current image and the tileX value is not equal to a first threshold.

2. The method according to claim 1, characterized in that the method further comprises: setting the indication value for the segment width to a predetermined value, when a difference value between the tile quality in the current image tile row and the tileX value is equal to the first threshold.

3. The method according to claim 2, characterized in that the default value indicates that the width of the segment comprises 1 column of tiles.

4. The method according to any of claims 1 to 3, characterized in that obtaining a tileX value according to the segment direction value comprises: obtaining the tileX value according to the segment direction value and the number of tiles in the tile row of the current image.

5. The method according to any of claims 1 to 4, characterized in that the tileX value is obtained according to a modulo operation between the segment direction value and the number of tiles in the current image tile row.

6. The method according to any of claims 1 to 5, characterized in that the segment direction is a leftmost tile index of the segment's topmost tile row, wherein the tiles comprising the current image are indexed according to a raster scan order.

7. The method according to any of claims 1 to 6, characterized in that the segment direction value specifies a direction of an upper left coordinate of the segment in the mosaic index.

8. The method according to any of claims 1 to 7, characterized in that the method further comprises: obtaining a number of tiles in a tile column of the current image; obtaining a tileY value according to the segment direction value, wherein the tileY value indicates a vertical direction in the tile index; analyzing an indication value for a bitstream segment height for the current image, where the difference value between the number of tiles in the tile column in the current image and the tileY value is not equal to a second threshold.

9. The method according to claim 8, wherein the method is further comprising: setting the indication value for the segment height to a preset value, when a difference value between the number of tiles in the tile column in the current image and the tileY value is equal to the second threshold.

10. The method according to claim 8 or 9, characterized in that obtaining a tileY value according to the segment direction value comprises: obtaining the tileY value according to the segment direction value and the number of tiles in the tile row of the current image.

11. The method according to any of claims 8 to 10, characterized in that the value of tileY is obtained according to an integer division operation between the value of the segment direction and the number of tiles in the tile row of the current image.

12. An encoding method implemented by a decoding device, the method being characterized in that it comprises: obtaining a bitstream for a current image; obtaining a number of tiles in a tile column of the current image; obtaining a value of a direction of a segment of the current image; obtaining a tileY value according to the value of the segment direction, wherein the tileY value indicates a vertical direction in the tile index; and analyzing an indication value for a segment height of the bitstream for the current image, where the difference between the number of tiles in the tile column in the current image and the tileY value is not equal to a second threshold.

13. The method according to claim 12, wherein the method is further comprising: setting the indication value for the segment height to a preset value, ML / t / ZUZZ / U / O 100 when a difference value between the number of tiles in the tile column in the current image and the tileY value is equal to the second threshold.

14. The method according to claim 13, characterized in that the default value indicates that the height of the segment comprises 1 row of tiles.

15. The method according to any of claims 12 to 14, characterized in that obtaining a tileY value according to the segment direction value comprises: obtaining a number of tiles in a tile row of the current image; obtaining the tileY value according to the segment direction value and the number of tiles in the tile row of the current image.

16. The method according to claim 15, characterized in that the value of tileY is obtained according to an integer division operation between the value of the segment direction and the number of tiles in the tile row of the current image.

17. The method according to any of claims 12 to 16, characterized in that the segment direction is a leftmost tile index of the uppermost tile row of the segment, wherein the tiles comprising the current image are indexed according to a raster scan order.

18. The method according to any of claims 12 to 17, characterized in that the segment direction value specifies a direction of an upper left coordinate of the segment in the tiling index.

19. An encoding method implemented by an encoding device, the method comprising: obtaining a number of tiles in a tile row of the current image; obtaining a value of a direction of a segment of the current image; obtaining a tileX value according to the value of the segment direction, wherein the tileX value indicates a horizontal ratio in the tile index; encoding an indication value for a segment width for the current image to obtain a bitstream, when a difference value between the tile quality in the tile row of the current image and the tileX value is not equal to a first threshold.

20. The method according to claim 19, wherein the method is further comprising: obtaining a number of tiles in a tile column of the current image; obtaining a tileY value according to the segment direction value, wherein the tileY value indicates a vertical direction in the tile index; encoding an indication value for a segment height for the current image in the bit stream, where a difference value between the number of tiles in the tile column in the current image and the tileY value is not equal to a second threshold.

21. The method according to claim 19 or 20, characterized in that obtaining a tileX value according to the segment direction value comprises: obtaining the tileX value according to the segment direction value and the number of tiles in the tile row of the current image.

22. The method according to any of claims 19 to 21, characterized in that the tileX value is obtained according to a modulo operation between the segment direction value and the number of tiles in the current image tile row.

23. The method according to claim 20 or 22, characterized in that obtaining a tileY value according to the segment direction value comprises: obtaining the tileY value according to the segment direction value and the number of tiles in the tile row of the current image.

24. The method according to any of claims 20 to 23, characterized in that the value of tileY is obtained according to an integer division operation between the value of the segment direction and the number of tiles in the tile row of the current image.

25. An encoding method implemented by an encoding device, the method being characterized in that it comprises: obtaining a number of tiles in a tile column of the current image; obtaining a value of a direction of a segment of the current image; obtaining a tileY value according to the segment direction value, wherein the tileY value indicates a vertical direction in the tile index; encoding an indication value for a segment height for the current image to obtain a bit stream, where the difference between the number of tiles in the tile column in the current image and the tileY value is not equal to a second threshold.

26. A decoder, characterized in that it comprises processing circuits for carrying out the method in accordance with any of claims 1 to 18.

27. An encoder, characterized in that it comprises processing circuits for carrying out the method in accordance with any of claims 19 to 25.

28. A computer program product, characterized in that it comprises program code for carrying out the method in accordance with any of claims 1 to 25 when executed on a computer or processor.

29. A decoder, characterized in that it comprises: one or more processors; and a non-transient, computer-readable storage medium coupled to the processors and storing programming for execution by the processors, wherein the programming, when executed by the processors, configures the decoder to carry out the method in accordance with any one of claims 1 to 18.

30. An encoder, characterized in that it comprises: one or more processors; and a non-transient, computer-readable storage medium coupled to the processors and storing programming for execution by the processors, wherein the programming, when executed by the processors, configures the decoder to carry out the method in accordance with any one of claims 19 to 25.

31. A non-transient, computer-readable medium carrying program code, characterized in that when executed by a computer device, it causes the computer device to carry out the method of any one of claims 1 to 25.

32. A video data decoding device, characterized in that it comprises: a non-transient memory storage configured to store video data in the form of a bitstream; and a video decoder configured to carry out any of the methods in accordance with any of claims 1 to 18.

33. A video data encoding device, characterized in that it comprises: a non-transient memory storage configured to store video data in the form of a bitstream; and a video encoder configured to carry out any of the methods in accordance with any of claims 19 to 25.

34. A non-transient storage medium characterized in that it comprises a bitstream decoded by performing the steps of: obtaining a number of tiles in a tile row of a current image; obtaining a value of a direction of a segment of the current image; obtaining a tileX value according to the value of the segment direction, wherein the tileX value indicates a horizontal ratio in the tile index; analyzing an indication value for a segment width of the bitstream for the current image, when a difference value between the tile quality in the row of MA / / O IOO tiles of the current image and the tileX value is not equal to a first threshold.

35. A video decoder apparatus, characterized in that it comprises: a acquisition module, configured to acquire a bitstream for a current image; the acquisition module, further configured to acquire a number of tiles in a tile row of the current image and to acquire a value of a direction of a segment of the current image; a calculation module, which is configured to acquire a tileX value according to the value of the segment direction; an analysis module, which is configured to analyze an indication value for a segment width of the bitstream for the current image, when a difference value between the tile quality in the tile row of the current image and the tileX value is not equal to a first threshold.

36. The video decoding apparatus according to claim 35, characterized in that the acquisition module, the calculation module and the analysis module are further configured to carry out the method of any one of claims 1 to 11.

37. A video decoder device, characterized in that it comprises: a acquisition module, configured to acquire a bitstream for a current image; the acquisition module, further configured to acquire a number of tiles in a tile column of the current image and to acquire a value of a direction of a segment of the current image; a calculation module, configured to acquire a tileY value according to the value of the segment direction; an analysis module, which is configured to analyze an indication value for a segment height of the bitstream for the current image, when a difference value between the number of tiles in the tile column in the current image and the tileY value is not equal to a second threshold.

38. The video decoding apparatus according to claim 37, characterized in that the acquisition module, the calculation module and the analysis module are further configured to carry out the method of any of claims 13 to 18.

39. A video coding device, characterized in that it comprises: a obtaining module, configured to obtain a number of tiles in a tile row of a current image; the obtaining module, further configured to obtain a value of a direction of a segment of the current image; a calculation module, configured to obtain a tileX value according to the value of the segment direction; an encoding module, configured to encode an indication value for a segment width in a bitstream for the current image, when a difference value between the tile quality in the tile row of the current image and the tileX value is not equal to a first threshold.

40. The video coding apparatus according to claim 39, characterized in that the acquisition module, the calculation module and the coding module are further configured to carry out the method according to any one of claims 20 to 24.

41. A video coding device, characterized in that it comprises: a obtaining module, configured to obtain a number of tiles in a tile column from the current image; the obtaining module, further configured to obtain a value of a direction from a segment of the current image; a calculation module, configured to obtain a tileY value according to the segment direction value; an encoding module, configured to encode an indication value for a segment height in a bitstream for the current image, when a difference value between the number of tiles in the tile column in the current image and the tileY value is not equal to a second threshold.

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