Data unit and parameter set design for point cloud coding

1. A method for activating a parameter set to permit decoding of a coded point cloud sequence, the method comprising:

parsing a parameter set associated with the coded point cloud sequence;

identifying a dependent parameter set based on parsing the parameter set;

identifying whether the dependent parameter set is a patch-level parameter set;

referencing the patch-level parameter set based on identifying that the dependent parameter set is the patch-level parameter set to permit the decoding of the coded point cloud sequence; and

referencing a frame-level parameter set based on identifying that the dependent parameter set is not the patch-level parameter set to permit the decoding of the coded point cloud sequence.

2. The method of claim 1 , wherein the parameter set is associated with a video-based point cloud compression (V-PCC) unit.

3. The method of claim 2 , wherein the V-PCC unit is a V-PCC non-video data unit (NDU).

4. The method of claim 2 , wherein the V-PCC unit is a V-PCC video data unit (VDU).

5. The method of claim 1 , wherein the patch-level parameter set is an attribute patch parameter set.

6. The method of claim 1 , wherein the patch-level parameter set is a geometry patch parameter set.

7. The method of claim 1 , wherein the parameter set is associated with a video-based point cloud compression (V-PCC) sequence parameter set (VSPS).

8. A device for referencing a parameter set to permit decoding of a coded point cloud sequence, comprising:

at least one memory configured to store program code; and

at least one processor configured to read the program code and operate as instructed by the program code, the program code configured to cause the at least one processor to perform:

parsing a parameter set associated with the coded point cloud sequence;

identifying whether a dependent parameter set is a patch-level parameter set based on parsing the parameter set;

referencing the patch-level parameter set based on identifying that the dependent parameter set is the patch-level parameter set; and

referencing a frame-level parameter set based on identifying that the dependent parameter set is not the patch-level parameter set to permit the decoding of the coded point cloud sequence.

9. The device of claim 8 , wherein the parameter set is associated with a video-based point cloud compression (V-PCC) unit.

10. The device of claim 9 , wherein the V-PCC unit is a V-PCC non-video data unit (NDU).

11. The device of claim 9 , wherein the V-PCC unit is a V-PCC video data unit (VDU).

12. The device of claim 8 , wherein the patch-level parameter set is an attribute patch parameter set.

13. The device of claim 8 , wherein the patch-level parameter set is an attribute patch parameter set.

14. The device of claim 8 , wherein the patch-level parameter set is a geometry patch parameter set.

15. A non-transitory computer-readable medium storing instructions, the instructions comprising: one or more instructions that, when executed by one or more processors of a device, cause the one or more processors to:

parse a parameter set associated with a coded point cloud sequence;

identify a dependent parameter set based on parsing the parameter set;

identify whether the dependent parameter set is a patch-level parameter set;

reference the patch-level parameter set based on identifying that the dependent parameter set is the patch-level parameter set to permit the decoding of the coded point cloud sequence; and

reference a frame-level parameter set based on identifying that the dependent parameter set is not the patch-level parameter set to permit the decoding of the coded point cloud sequence.

16. The non-transitory computer-readable medium according to claim 15 , wherein the parameter set is associated with a video-based point cloud compression (V-PCC) unit.

17. The non-transitory computer-readable medium according to claim 16 , wherein the V-PCC unit is a V-PCC non-video data unit (NDU).

18. The non-transitory computer-readable medium according to claim 16 , wherein the V-PCC unit is a V-PCC video data unit (VDU).

19. The non-transitory computer-readable medium according to claim 15 , wherein the patch-level parameter set is an attribute patch parameter set.

20. The non-transitory computer-readable medium according to claim 15 , wherein the patch-level parameter set is a geometry patch parameter set.