IP Library › Granted Patent US 12,262,031
Granted Patent B2
US 12,262,031 · App. 18/207,470 · Granted Mar 25, 2025

Efficient scalable coding concept

Inventors: Karsten Suehring (Berlin, DE); Thomas Schierl (Berlin, DE); Valeri George (Berlin, DE); Detlev Marpe (Berlin, DE); Robert Skupin (Berlin, DE)
Assignee: Dolby Video Compression, LLC
H04N19/187H04N19/102H04N19/119H04N19/12H04N19/139H04N19/174H04N19/30H04N19/33H04N19/436H04N19/46H04N19/59H04N19/70H04N19/80H04N19/156
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Quick Facts
Patent No.
US 12,262,031
App. No.
18/207,470
Granted
Mar 25, 2025
Kind
B2
Abstract

Scalable coding concepts are described. One aspect improves parallel decoding of inter-dependent layers of a multi-layer video data stream by introducing a long-term syntax element structure for guaranteeing that during a predetermined time period the pictures of the dependent layer are subdivided so that borders of the spatial segments of the pictures of the second layer and the spatial segments of the first layer overlay. Another aspect concerns upsampling from base layer to enhancement layer. Another aspect introduces a long-term syntax element structure allowing the decoder to determine the inter-layer offset for a predetermined time period. Another aspect introduces a type indicator field changing a way a layer indicator field within the NAL unit headers is to be interpreted. Another aspect allows different codecs/standards to be used for the different layers. Another aspect concerns a syntax element structure which indicates the inter-layer offset in units of the base layer blocks.

Claims (30)

1. A decoder for reconstructing a plurality of views layers from a data stream, comprising:

a processor configured to:

perform, based on a signaling in the data stream, an inter-layer prediction from a first layer to a second layer of the plurality of layers, wherein:

the first layer is partitioned into spatial segments,

the signaling includes a long-term syntax element having a value indicating that the second layer is partitioned into spatial segments in a manner that at least one of the spatial segments of the second layer is spatially aligned with a corresponding one of the spatial segments of the first layer, and

the signaling indicates that the inter-layer prediction from the first layer to the second layer for a current portion of the second layer is based on information stemming from only a first spatial segment of the spatial segments of the first layer without combining information from another spatial segment of the spatial segments of the first layer.

2. The decoder of claim 1 , wherein the inter-layer prediction includes predicting sample values of the current portion of the second layer.

3. The decoder of claim 1 , wherein the inter-layer prediction includes predicting motion vectors associated with the current portion of the second layer based on motion vectors associated with the first spatial segment of the first layer.

4. The decoder of claim 1 , wherein the signaling signals a change in the inter-layer prediction at spatial segment boundaries of the spatial segments into which the first layer is partitioned.

5. The decoder of claim 4 , wherein the change in the inter-layer prediction at the spatial segment boundaries is associated with a selection of a binarization or a probability estimate of a syntax element of the current portion of the second layer.

6. The decoder of claim 1 , wherein the processor is further configured to adjust an inter-layer decoding offset in reconstructing the first and second layers using inter-layer parallel decoding.

7. An encoder for encoding a plurality of layers into a data stream, comprising:

a processor configured to:

perform an inter-layer prediction from a first layer to a second layer of the plurality of layers; and

insert a signaling in the data stream, wherein:

the first layer is partitioned into spatial segments,

the signaling includes a long-term syntax element having a value indicating that the second layer is partitioned into spatial segments in a manner that at least one of the spatial segments of the second layer is spatially aligned with a corresponding one of the spatial segments of the first layer, and

the signaling indicates that the inter-layer prediction from the first layer to the second layer for a current portion of the second layer is based on information stemming from only a first spatial segment of the spatial segments of the first layer without combining information from another spatial segment of the spatial segments of the first layer.

8. The encoder of claim 7 , wherein the inter-layer prediction includes predicting sample values of the current portion of the second layer.

9. The encoder of claim 7 wherein the inter-layer prediction includes predicting motion vectors associated with the current portion of the second layer based on motion vectors associated with the first spatial segment of the first layer.

10. The encoder of claim 7 , wherein the signaling signals a change in the inter-layer prediction at spatial segment boundaries of the spatial segments into which the first layer is partitioned.

11. A non-transitory computer-readable medium for storing data associated with a video, comprising:

a data stream comprising a signaling, wherein:

a plurality of layers are encoded into the data stream based on an inter-layer prediction from a first layer to a second layer of the plurality of layers,

the first layer is partitioned into spatial segments,

the signaling includes a long-term syntax element having a value indicating that the second layer is partitioned into spatial segments in a manner that at least one of the spatial segments of the second layer is spatially aligned with a corresponding one of the spatial segments of the first layer, and

the signaling indicates that the inter-layer prediction from the first layer to the second layer for a current portion of the second layer is based on information stemming from only a first spatial segment of the spatial segments of the first layer without combining information from another spatial segment of the spatial segments of the first layer.

12. The non-transitory computer-readable medium of claim 11 , wherein the inter-layer prediction includes predicting sample values of the current portion of the second layer.

13. The non-transitory computer-readable medium of claim 11 , wherein the inter-layer prediction includes predicting motion vectors associated with the current portion of the second layer based on motion vectors associated with the first spatial segment of the first layer.

14. The non-transitory computer-readable medium of claim 11 , wherein the signaling signals a change in the inter-layer prediction at spatial segment boundaries of the spatial segments into which the first layer is partitioned.

Assignments (2)
CHANGE OF NAME Recorded Jan 30, 2026
From: GE VIDEO COMPRESSION, LLC
To: DOLBY VIDEO COMPRESSION, LLC
Reel/Frame 074536/0781 →
CHANGE OF NAME Recorded Nov 26, 2024
From: GE VIDEO COMPRESSION, LLC
To: DOLBY VIDEO COMPRESSION, LLC
Reel/Frame 069450/0772 →
Continuity (8)
Continuation 17241855 · Apr 27, 2021
Continuation 16795632 · Feb 20, 2020
Continuation 16123184 · Sep 6, 2018
Continuation 14753144 · Jun 29, 2015
Continuation PCTEP2014050065 · Jan 4, 2014
Provisional Application 61809605 · Apr 8, 2013
Provisional Application 61749042 · Jan 4, 2013
Related Publication 20230396782A1 · Dec 7, 2023
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