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US 2023/0143712 A1Published application
Transform size interactions with coding tools
AssigneeInterDigital VC Holdings France, SAS
InventorsKaram Naser, Tangi Poirier, Franck Galpin, Ya Chen
Life of this patent
Estimating the term…
Abstract
Methods and apparatus for implementing Discrete Trigonometric transforms are based on maximum transform size. In one embodiment, matrix-based intra prediction is enabled for coding unit sizes up to a specified size, regardless of the maximum transform size. In another embodiment, low-frequency non-separable transforms are used to improve coding gain. Syntax in a bitstream can be used to indicate a coding tool that is used.
Claims21
1-15. (canceled)
A method for video encoding, comprising:
- enabling a coding tool based on a maximum transform block size;
- performing at least a portion of a discrete transform on a subset of samples comprising a block;
- and
- encoding the block using the enabled coding tool.
1 more element
An apparatus, comprising:
- a processor, configured to:
- enable a coding tool based on a maximum transform block size;
- perform at least a portion of a discrete transform on a subset of samples comprising a block;
- and
- encode the block using the enabled coding tool.
2 more elements
A method for video decoding, comprising:
- enabling a coding tool based on a maximum transform block size;
- performing at least a portion of an inverse discrete transform on a subset of samples comprising a block;
- and
- decoding the block using the enabled coding tool.
1 more element
An apparatus, comprising:
- a processor, configured to:
- enable a coding tool based on a maximum transform block size;
- perform at least a portion of an inverse discrete transform on a subset of samples comprising a block;
- and
- decode the block using the enabled coding tool.
2 more elements
Dependencies are inferred from the claim text.