Implicit Transform Settings
AssigneeMediatek Inc.
InventorsMan-Shu Chiang, Chun-Chia Chen, Chih-Wei Hsu
Life of this patent
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Abstract
A video coder that implicitly signals a transform setting for coding a block of pixels is provided. The video coder derives a transform setting for a block of pixels based on a block processing setting. The video coder processes the block of pixels according to the block processing setting. For encoding, the video coder transforms a set of residual pixels to generate a set of transform coefficients according to the transform setting. For decoding, the video coder inverse transforms the transform coefficients to generate a set of residual pixels according to the transform setting.
Claims18
A decoding method comprising:
- decoding transform coefficients for a block of pixels from a bitstream;
- deriving a transform setting based on a block processing setting for the block of pixels;
- processing the block of pixels according to the block processing setting, wherein processing the block of pixels comprises performing an inverse transform operation for the transform coefficients to generate a set of residual pixels according to the transform setting;
- and
- reconstructing the block of pixels based on the set of residual pixels.
An encoding method comprising:
- receiving a block of pixels of a video picture;
- deriving a transform setting based on a block processing setting for the block of pixels;
- processing the block of pixels according to the block processing setting, wherein processing the block of pixels comprises performing a transform operation of a set of residual pixels to generate a set of transform coefficients according to the transform setting;
- and
- encoding the transform coefficients in a bitstream.
An encoding method comprising:
- receiving a block of pixels of a video picture;
- deriving a transform setting based on based on a height or a width of the block of pixels;
- performing a transform operation of the block of pixels to generate a set of transform coefficients according to the transform setting;
- and
- encoding the transform coefficients in a bitstream.
A decoding method comprising:
- decoding transform coefficients for a block of pixels of a video picture from a bitstream;
- deriving a transform setting based on based on a height or a width of the block of pixels;
- performing an inverse transform operation for the transform coefficients to generate a set of residual pixels according to the transform setting;
- and
- reconstructing the block of pixels based on the set of residual pixels.
Dependencies are inferred from the claim text.