Method and device for encoding/decoding image, and recording medium storing bit stream
AssigneeLx Semicon Co., Ltd.
InventorsJin Ho Lee, Hyun Suk Ko, Jung Won Kang, Sung Chang Lim, Ha Hyun Lee, Dong San Jun, Seung Hyun Cho, Hui Yong Kim, Jin Soo Choi
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Abstract
An image encoding/decoding method and apparatus for predicting a second color component block using a first color component block are provided. An image decoding method of the present invention comprises deriving a prediction parameter using the first color component block, and predicting the second color component block using the derived prediction parameter.
Claims19
An image decoding method comprising:
- deriving an intra prediction mode of a current chroma block;
- selecting one or more reference sample lines for a current luma block from a plurality of reference sample lines adjacent to the current luma block in response to the intra prediction mode of the current chroma block being inter-component intra prediction mode, wherein the current luma block corresponds to the current chroma block;
- deriving prediction parameters for inter-component intra prediction using the selected one or more reference sample line;
- and
- generating a prediction block by performing inter-component intra prediction for the current chroma block based on the current luma block and the prediction parameters.
An image encoding method comprising:
- selecting one or more reference sample lines for a current luma block from a plurality of reference sample lines adjacent to the current luma block for inter-component intra prediction of a current chroma block, wherein the current luma block corresponds to the current chroma block;
- deriving prediction parameters for inter-component intra prediction using the selected one or more reference sample line;
- and
- generating a prediction block by performing inter-component intra prediction for the current chroma block based on the current luma block and the prediction parameters.
A non-transitory computer-readable recording medium storing a bitstream which is decoded by an image decoding method,
- wherein the image decoding method comprises,
- deriving an intra prediction mode of a current chroma block;
- selecting one or more reference sample lines for a current luma block from a plurality of reference sample lines adjacent to the current luma block in response to the intra prediction mode of the current chroma block being inter-component intra prediction mode, wherein the current luma block corresponds to the current chroma block;
- deriving prediction parameters for inter-component intra prediction using the selected one or more reference sample lines;
- and
- generating a prediction block by performing inter-component intra prediction for the current chroma block based on the current luma block and the prediction parameters.
Dependencies are inferred from the claim text.