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US 9,179,145 B2Granted
Cross layer spatial intra prediction
AssigneeVidyo, Inc.
InventorsDanny Hong, Jill Boyce
Life of this patent
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Abstract
Techniques for video decoding include cross-layer prediction from a base layer to an SNR or spatial enhancement layer of spatial intra prediction mode information. In one example embodiment, the Most Probable Mode (MPM) for intra prediction of an enhancement layer block is predicted from the spatially corresponding base layer block.
Claims21
A method for decoding a scalable video bitstream, comprising:
- decoding at least one intra spatial direction mode for intra prediction for at least one sample of a base layer complying with a version of a video coding standard;
- receiving coded information pertaining to at least one sample of an enhancement layer complying with the same version of the video coding standard, the at least one sample having at least one intra spatial prediction direction mode;
- and
- setting at least one Most Probable Mode (MPM) of the at least one sample of the enhancement layer to indicate that the at least one intra spatial prediction direction mode for the at least one sample of the enhancement layer is equal to the at least one intra spatial directional mode for the at least one sample of the base layer;
- wherein there are no more than three MPMs in the base layer or the enhancement layer;
- and
- wherein the method further comprises decoding at least one syntax element S, which indicates whether the at least one intra spatial directional mode for the at least one sample of the enhancement layer is equal to the at least one MPM.
4 more elements
A non-transitory computer readable medium comprising a set of instructions to direct a processor to perform a method for decoding a scalable video bitstream, comprising:
- decoding at least one intra spatial direction mode for intra prediction for at least one sample of a base layer complying with a version of a video coding standard;
- receiving coded information pertaining to at least one sample of an enhancement layer complying with the same version of the video coding standard, the at least one sample having at least one intra spatial prediction direction mode;
- and
- setting at least one Most Probable Mode (MPM) of the at least one sample of the enhancement layer to indicate that the at least one intra spatial prediction direction mode for the at least one sample of the enhancement layer is equal to the at least one intra spatial directional mode for the at least one sample of the base layer;
- wherein there are no more than three MPMs in the base layer or the enhancement layer;
- and
- further comprising a set of instructions to direct the processor to perform decoding at least one syntax element S which indicates whether the at least one intra spatial directional mode for the at least one sample of the enhancement layer is equal to the at least one MPM.
4 more elements
A video coder for decoding a bitstream, comprising:
- at least one processor;
- and
- at least one non-transitory computer readable medium comprising a set of instructions to direct the at least one processor to:
- (a) receive at least one sample of a base layer and decode at least one intra spatial direction mode for intra prediction for the at least one sample of the base layer complying with a version of a video coding standard;
- and
- (b) receive coded information for the at least one sample of the base layer, and configured to set at least one Most Probable Mode (MPM) of at least one sample of an enhancement layer to indicate that the at least one intra spatial prediction direction mode for the at least one sample of the enhancement layer is equal to the at least one intra spatial directional mode for the at least one sample of the base layer, the enhancement layer complying with the same version of the video coding standard, wherein there are no more than three MPMs in the base layer or the enhancement layer;
- and
- (c) perform decoding at least one syntax element S which indicates whether the at least one intra spatial directional mode for the at least one sample of the enhancement layer is equal to the at least one MPM.
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Dependencies are inferred from the claim text.