Chroma intra prediction method and device therefor
AssigneeSamsung Electronics Co., Ltd.
InventorsAlexander ALSHIN, Elena ALSHINA
Life of this patent
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Abstract
Provided is a video decoding method including: obtaining correlation information of a luma value and a chroma value from a most probable chroma (MPC) mode reference region of a current chroma block; determining a prediction value of a chroma sample of the current chroma block from luma samples of a current luma block corresponding to the current chroma block, according to the correlation information; and decoding the current chroma block based on the prediction value of the chroma sample.
Claims15
A video decoding method comprising:
- obtaining correlation information of a luma value and a chroma value from a most probable chroma (MPC) mode reference region of a current chroma block;
- determining a prediction value of a chroma sample of the current chroma block from luma samples of a current luma block corresponding to the current chroma block, according to the correlation information;
- and
- decoding the current chroma block based on the prediction value of the chroma sample.
A video decoding apparatus comprising:
- a correlation information obtainer configured to obtain correlation information of a luma value and a chroma value from a most probable chroma (MPC) mode reference region of a current chroma block;
- a chroma sample predictor configured to determine a prediction value of a chroma sample of the current chroma block from luma samples of a current luma block corresponding to the current chroma block, according to the correlation information;
- and
- a decoder configured to decode the current chroma block based on the prediction value of the chroma sample.
A video encoding method comprising:
- obtaining correlation information of a luma value and a chroma value from a most probable chroma (MPC) mode reference region of a current chroma block;
- determining a prediction value of a chroma sample of the current chroma block from luma samples of a current luma block corresponding to the current chroma block, according to the correlation information;
- and
- determining an intra mode of the current chroma block among intra modes including an MPC mode, according to a prediction result of the chroma sample.
(canceled)
Dependencies are inferred from the claim text.