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US 11,457,218 B2Granted
Method and apparatus for processing video signal
AssigneeKt Corporation
InventorBae Keun Lee
Life of this patent
Estimating the term…
Abstract
A method for decoding a video according to the present invention may comprise: deriving a reference sample for a current block, determining an intra prediction mode of the current block, and obtaining a prediction sample for the current block by using the reference sample and the intra prediction mode.
Claims11
A method of decoding a video, the method comprising:
- obtaining residual coefficients of a current block based on a pre-defined scanning order;
- performing an inverse-quantization on the residual coefficients;
- determining whether to perform an inverse-transform on the inverse-quantized residual coefficients;
- and
- obtaining residual samples of the current block by applying or skipping the inverse-transform for the current block,
- wherein whether to parse a transform skip flag specifying whether the inverse-transform is skipped or not is determined based on a partition type of a coding block including the current block, and
- wherein when the coding block is partitioned into vertically or horizontally, parsing the transform skip flag is omitted, and it is determined that the inverse-transform is not skipped for the current block.
4 more elements
A method of encoding a video, the method comprising:
- obtaining residual samples of a current block;
- determining whether to perform a transform on the residual samples;
- performing a quantization on the transformed or un-transformed residual samples;
- encoding residual coefficients resultant from the quantization,
- wherein whether to encode a transform skip flag specifying whether the transform is skipped or not is determined based on a partition type of a coding block including the current block, and
- wherein when the coding block is partitioned into vertically or horizontally, encoding the transform skip flag is omitted, and the transform is not skipped for the current block.
3 more elements
A non-transitory computer-readable medium for storing data associated with a video signal, comprising:
- a data stream stored in the non-transitory computer-readable medium, the data stream comprising compressed video data which comprising:
- residual coefficients information for a current block, residual coefficients of the current block being obtained based on a pre-defined scanning order;
- and
- inverse quantization information for performing an inverse-quantization on the residual coefficients,
- wherein, based on a partition type of a coding block including the current block, it is determined whether a transform skip flag, specifying whether an inverse-transform is skipped or not for the current block is included in the compressed video data or not, and
- wherein when the coding block is partitioned into vertically or horizontally, the transform skip flag for the current block is not included in the compressed video data, and the inverse-transform is not skipped for the current block.
3 more elements
Dependencies are inferred from the claim text.