Image encoding/decoding method and device
AssigneeIndustry Academy Cooperation Foundation of Sejong University
InventorsJoo Hee MOON, Sung Won LIM, Dong Jae WON
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Abstract
The present invention relates to an image encoding/decoding method and device. In an image decoding method and device according to an embodiment of the present invention, a reconstructed pixel region within an image to which a current block to be decoded belongs is selected; a motion vector of the reconstructed pixel region is derived on the basis of the reconstructed pixel region and a reference image of the current block; and the derived motion vector is selected as a motion vector of the current block.
Claims17
An image decoding method comprising:
- determining more than one sub-block of a current block including a first sub-block and a second sub-block;
- obtaining a first prediction block for the first sub-block based on a first motion vector;
- obtaining a second prediction block for the second sub-block based on a second motion vector;
- and
- determining a final prediction block of the current block based on the first prediction block and the second prediction block,
- wherein a boundary prediction sample adjacent to a boundary between the first sub-block and the second sub-block in the final prediction block is determined based on a weighted sum of a first prediction sample in the first prediction block and a second prediction sample in the second prediction block.
An image encoding method comprising:
- determining more than one sub-block of a current block including a first sub-block and a second sub-block;
- obtaining a first prediction block for the first sub-block based on a first motion vector;
- obtaining a second prediction block for the second sub-block based on a second motion vector;
- and
- determining a final prediction block of the current block based on the first prediction block and the second prediction block,
- wherein a boundary prediction sample adjacent to a boundary between the first sub-block and the second sub-block in the final prediction block is determined based on a weighted sum of a first prediction sample in the first prediction block and a second prediction sample in the second prediction block.
A non-transitory computer-readable medium storing a bitstream to be decoded according to an image decoding method, the image decoding comprising:
- determining more than one sub-block of a current block including a first sub-block and a second sub-block;
- obtaining a first prediction block for the first sub-block based on a first motion vector;
- obtaining a second prediction block for the second sub-block based on a second motion vector;
- and
- determining a final prediction block of the current block based on the first prediction block and the second prediction block,
- wherein a boundary prediction sample adjacent to a boundary between the first sub-block and the second sub-block in the final prediction block is determined based on a weighted sum of a first prediction sample in the first prediction block and a second prediction sample in the second prediction block.
Dependencies are inferred from the claim text.