Abstract
A video encoder is configured to determine a picture size for one or more pictures included in a video sequence. The picture size associated with the video sequence may be a multiple of an aligned coding unit size for the video sequence. In one example the aligned coding unit size for the video sequence may comprise a minimum coding unit size where the minimum coding unit size is selected from a plurality of smallest coding unit sizes corresponding to different pictures in the video sequence. A video decoder is configured to obtain syntax elements to determine the picture size and the aligned coding unit size for the video sequence. The video decoder decodes the pictures included in the video sequence with the picture size and stores the decoded pictures in a decoded picture buffer.
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Specification Information
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Technologies
Signal Processing
Product
Use Cases
Mobile TV/ Radio
Services
Claim
1. A method of encoding video data comprising:determining a smallest coding unit size for a video sequence, wherein the video sequence comprises a plurality of pictures and wherein the smallest coding unit size is selected from a plurality of possible coding unit sizes;determining a picture size associated with the video sequence, wherein the picture size associated with the video sequence is determined as a multiple of the smallest coding unit size; and signaling the smallest coding unit size in sequence level syntax information and signaling the picture size as a multiple of smallest coding unit size in sequence level syntax information.
2. The method of claim 1, wherein the plurality of possible coding unit sizes includes a maximum coding unit size of 64x64 pixels.
3. The method of claim 1, wherein determining a smallest coding unit size for the video sequence includes determining a first smallest coding unit size for a first picture and determining a second smallest coding unit size for a second picture, wherein the first smallest coding unit size is less than the second smallest coding unit size, and wherein the smallest coding unit size for the video sequence is the first smallest coding unit size.
4. The method of claim 1, wherein the picture size includes a picture width determined as a multiple of the smallest coding unit size and a picture height determined as a multiple of the smallest coding unit size.
5. The method of claim 1, wherein the picture size specifies a picture size of a decoded picture stored in a decoded picture buffer.
6. A device configured to encode video data comprising: means for determining a smallest coding unit size for a video sequence, wherein the video sequence comprises a plurality of pictures and wherein the smallest coding unit size is selected from a plurality of possible coding unit sizes;means for determining a picture size associated with the video sequence, wherein the picture size associated with the video sequence is determined as a multiple of the smallest coding unit size; and means for signaling the smallest coding unit size in sequence level syntax information and means for signaling the picture size as a multiple of smallest coding unit size in sequence level syntax information.
7. The device of claim 6, wherein the plurality of possible coding unit sizes includes a maximum coding unit size of 64x64 pixels.
8. The device of claim 6, wherein the means for determining a smallest coding unit size for the video sequence includes means for determining a first smallest coding unit size for a first picture and determining a second smallest coding unit size for a second picture, wherein the first smallest coding unit size is less than the second smallest coding unit size, and wherein the smallest coding unit size for the video sequence is the first smallest coding unit size.
9. The device of claim 6, wherein the picture size includes a picture width determined as a multiple of the smallest coding unit size and a picture height determined as a multiple of the smallest coding unit size
10. The device of claim 6, wherein the picture size specifies a picture size of a decoded picture stored in a decoded picture buffer
11. A device comprising a video encoder configured to:determine a smallest coding unit size for a video sequence, wherein the video sequence comprises a plurality of pictures and wherein the smallest coding unit size is selected from a plurality of possible coding unit sizes; determine a picture size associated with the video sequence, wherein the picture size associated with the video sequence is determined as a multiple of the smallest coding unit size; and signal the smallest coding unit size in sequence level syntax information and signal the picture size as a multiple of smallest coding unit size in sequence level syntax information
12. The device of claim 11, wherein the plurality of possible coding unit sizes includes a maximum coding unit size of 64x64 pixels.13 . The device of claim 11, wherein determining a smallest coding unit size for the video sequence includes determining a first smallest coding unit size for a first picture and determining a second smallest coding unit size for a second picture, wherein the first smallest coding unit size is less than the second smallest coding unit size, and wherein the smallest coding unit size for the video sequence is the first smallest coding unit size
14. The device of claim 11, wherein the picture size includes a picture width determined as a multiple of the smallest coding unit size and a picture height determined as a multiple of the smallest coding unit size
15. The device of claim 11, wherein the picture size specifies a picture size of a decoded picture stored in a decoded picture buffer
16. A computer readable medium comprising instructions stored thereon that when executed cause a processor to:determine a smallest coding unit size for a video sequence, wherein the video sequence comprises a plurality of pictures and wherein the smallest coding unit size is selected from a plurality of possible coding unit sizes;determine a picture size associated with the video sequence, wherein the picture size associated with the video sequence is determined as a multiple of the smallest coding unit size; and signal the smallest coding unit size in sequence level syntax information and signal the picture size as a multiple of smallest coding unit size in sequence level syntax information
17. The computer readable medium of claim 16, wherein the plurality of possible coding unit sizes includes a maximum coding unit size of 64x64 pixels
18. The computer readable medium of claim 16, wherein determining a smallest coding unit size for the video sequence includes determining a first smallest coding unit size for a first picture and determining a second smallest coding unit size for a second picture, wherein the first smallest coding unit size is less than the second smallest coding unit size, and wherein the smallest coding unit size for the video sequence is the first smallest coding unit size
19. The computer readable medium of claim 16, wherein the picture size includes a picture width determined as a multiple of the smallest coding unit size and a picture height determined as a multiple of the smallest coding unit size.
20. The computer readable medium of claim 16, wherein the picture size specifies a picture size of a decoded picture stored in a decoded picture buffer.
21. A method of decoding video data comprising:obtaining a coded video sequence including a plurality of coded pictures;obtaining sequence level syntax information indicating a smallest coding unit size of the video sequence, wherein the smallest coding unit size is selected from a plurality of possible coding unit sizes;obtaining sequence level information indicating a picture size associated with the video sequence, the picture size having been signaled as a multiple of smallest coding unit size, and wherein the picture size is determined as a multiple of the smallest coding unit size;decoding the pictures; and storing the decoded pictures in a decoded picture buffer.
22. The method of claim 21, wherein a first picture of the video sequence has a first smallest coding unit size and a second picture of the video sequence has a second smallest coding unit size, the first smallest coding unit size is less than the second smallest coding unit size, the smallest coding unit size is the first smallest coding unit size, and the picture size is a multiple of the first smallest coding unit size.
23. The method of claim 21, wherein the picture size includes a picture width determined as a multiple of the smallest coding unit size and a picture height determined as a multiple of the smallest coding unit size.
24. The method of claim 21, wherein the plurality of possible coding unit sizes includes a maximum coding unit size of 64x64 pixels.
25. A device configured to decode video data comprising:means for obtaining a coded video sequence including a plurality of coded pictures;means for obtaining sequence level syntax information indicating a smallest coding unit size of the video sequence, wherein the smallest coding unit size is selected from a plurality of possible coding unit sizes;means for obtaining sequence level information indicating a picture size associated with the video sequence, the picture size having been signaled as a multiple of smallest coding unit size, and wherein the picture size is determined as a multiple of the smallest coding unit size;means for decoding the pictures; and means for storing the decoded pictures in a decoded picture buffer.
26. The device of claim 25, wherein a first picture of the video sequence has a first smallest coding unit size and a second picture of the video sequence has a second smallest coding unit size, the first smallest coding unit size is less than the second smallest coding unit size, the smallest coding unit size is the first smallest coding unit size, and the picture size is a multiple of the first smallest coding unit size.
27. The device of claim 25, wherein the picture size includes a picture width determined as a multiple of the smallest coding unit size and a picture height determined as a multiple of the smallest coding unit size.
28. The device of claim 25, wherein the plurality of possible coding unit sizes includes a maximum coding unit size of 64x64 pixels.
29. A device comprising a video decoder configured to:obtain a coded video sequence including a plurality of coded pictures;obtain sequence level syntax information indicating a smallest coding unit size of the video sequence, wherein the smallest coding unit size is selected from a plurality of possible coding unit sizes;obtain sequence level information indicating a picture size associated with the video sequence, the picture size having been signaled as a multiple of smallest coding unit size, and wherein the picture size is determined as a multiple of the smallest coding unit size;decode the pictures; and store the decoded pictures in a decoded picture buffer.
30. The device of claim 29, wherein a first picture of the video sequence has a first smallest coding unit size and a second picture of the video sequence has a second smallest coding unit size, the first smallest coding unit size is less than the second smallest coding unit size, the smallest coding unit size is the first smallest coding unit size, and the picture size is a multiple of the first smallest coding unit size.
31. The device of claim 29, wherein the picture size includes a picture width determined as a multiple of the smallest coding unit size and a picture height determined as a multiple of the smallest coding unit size.
32. The device of claim 29, wherein the plurality of possible coding unit sizes includes a maximum coding unit size of 64x64 pixels.
33. A computer readable medium comprising instructions stored thereon that when executed cause a processor to:obtain a coded video sequence including a plurality of coded pictures;obtain sequence level syntax information indicating a smallest coding unit size of the video sequence, wherein the smallest coding unit size is selected from a plurality of possible coding unit sizes;obtain sequence level information indicating a picture size associated with the video sequence, the picture size having been signaled as a multiple of smallest coding unit size, and wherein the picture size is determined as a multiple of the smallest coding unit size;decode the pictures; and store the decoded pictures in a decoded picture buffer.
34. The computer readable medium of claim 33, wherein a first picture of the video sequence has a first smallest coding unit size and a second picture of the video sequence has a second smallest coding unit size, the first smallest coding unit size is less than the second smallest coding unit size, the smallest coding unit size is the first smallest coding unit size, and the picture size is a multiple of the first smallest coding unit size.
35. The computer readable medium of claim 33, wherein the picture size includes a picture width determined as a multiple of the smallest coding unit size and a picture height determined as a multiple of the smallest coding unit size.
36. The computer readable medium of claim 33, wherein the plurality of possible coding unit sizes includes a maximum coding unit size of 64x64 pixels.']
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
The information in grey was provided by the patent holder
The information in purple was extracted from the FrandAvenue
Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.