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US 2026/0039802 A1Published application
Image encoding/decoding method and device
AssigneeB1 Institute of Image Technology, Inc.
InventorKi Baek KIM
Life of this patent
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Abstract
An image prediction method according to the present invention may comprise: identifying a reference pixel region designated for obtaining correlation information; determining a reference pixel processing configuration on the basis of determination of the availability of the reference pixel region; and performing intra prediction according to the determined reference pixel processing. As described above, performing intra prediction on the basis of the availability of a reference pixel according to the present invention can improve encoding performance.
Claims8
A method of decoding an image, comprising:
- determining a prediction mode of a current chroma block as a mode that predicts the current chroma block from a luma block corresponding to the current chroma block;
- obtaining a first prediction sample for the current chroma block based on the determination;
- obtaining a second prediction sample for the current chroma block based on the determination;
- obtaining a final prediction sample for the current chroma block based on the first prediction sample and the second prediction sample;
- generating a residual sample for the current chroma block;
- and
- reconstructing the current chroma block based on the final prediction sample and the residual sample,
- wherein the first prediction sample is predicted by using a DC mode, and
- wherein the second prediction sample is obtained based on the luma block corresponding to the current chroma block.
6 more elements
A method of encoding an image, comprising:
- determining a prediction mode of a current chroma block as a mode that predicts the current chroma block from a luma block corresponding to the current chroma block;
- obtaining a first prediction sample for the current chroma block based on the determination;
- obtaining a second prediction sample for the current chroma block based on the determination;
- obtaining a final prediction sample for the current chroma block based on the first prediction sample and the second prediction sample;
- and
- encoding the current chroma block based on the final prediction sample,
- wherein the encoding the current chroma block further comprises generating a residual sample for the current chroma block based on the final prediction sample and encoding the current chroma block based on the residual sample,
- wherein the first prediction sample is predicted by using a DC mode, and
- wherein the second prediction sample is obtained based on the luma block corresponding to the current chroma block.
6 more elements
A method of transmitting a bitstream comprising:
- determining a prediction mode of a current chroma block as a mode that predicts the current chroma block from a luma block corresponding to the current chroma block;
- obtaining a first prediction sample for the current chroma block based on the determination;
- obtaining a second prediction sample for the current chroma block based on the determination;
- obtaining a final prediction sample for the current chroma block based on the first prediction sample and the second prediction sample;
- encoding, into the bitstream, the current chroma block based on the final prediction sample;
- and
- transmitting the bitstream,
- wherein the encoding the current chroma block further comprises generating a residual sample for the current chroma block based on the final prediction sample and encoding the current chroma block based on the residual sample,
- wherein the first prediction sample is predicted by using a DC mode, and
- wherein the second prediction sample is obtained based on the luma block corresponding to the current chroma block.
7 more elements
A non-transitory computer readable recording medium storing a bitstream generated by an image encoding method, the image encoding method comprising:
- determining a prediction mode of a current chroma block as a mode that predicts the current chroma block from a luma block corresponding to the current chroma block;
- obtaining a first prediction sample for the current chroma block based on the determination;
- obtaining a second prediction sample for the current chroma block based on the determination;
- obtaining a final prediction sample for the current chroma block based on the first prediction sample and the second prediction sample;
- and
- encoding the current chroma block based on the final prediction sample,
- wherein the encoding the current chroma block further comprises generating a residual sample for the current chroma block based on the final prediction sample and encoding the current chroma block based on the residual sample,
- wherein the first prediction sample is predicted by using a DC mode, and
- wherein the second prediction sample is obtained based on the luma block corresponding to the current chroma block.
6 more elements
Dependencies are inferred from the claim text.