Motion information prediction method and apparatus for distortion due to projection formation conversion
AssigneeElectronics and Telecommunications Research Institute
InventorsGun Bang, Hui Yong Kim, Gwang Hoon Park, Woo Woen Gwun, Tae Hyun Kim, Won Jun Lee
Life of this patent
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Abstract
There is provided a method of decoding an image, the method comprising: decoding information for motion information prediction of a current block from a bitstream, predicting motion information of the current block based on the information, refining motion information of the current block by using the decoded information and the predicted motion information of the current block and reconstructing the current block based on the refined motion information of the current block.
Claims17
A method of decoding an image, the method comprising:
- decoding, from a bitstream, motion vector refinement information indicating whether to refine motion vectors of blocks in a current sequence;
- determining a motion vector candidate list of a current block based on a neighboring block of the current block;
- decoding, from the bitstream, motion vector prediction information of the current block in the current sequence;
- determining a motion vector of the current block based on the motion vector candidate list and the motion vector prediction information of the current block;
- refining the motion vector of the current block based on the motion vector refinement information;
- and
- reconstructing the current block based on the refined motion vector of the current block,
- wherein the motion vector is refined according to a size of the current block.
A method of encoding an image, the method comprising:
- determining a motion vector of a current block in a current sequence;
- determining a motion vector candidate list of the current block based on a neighboring block of the current block;
- and
- encoding motion vector prediction information of the current block based on the motion vector and the motion vector candidate list of the current block;
- determining whether to refine motion vectors of blocks in the current sequence;
- encoding motion vector refinement information of the current sequence, the motion vector refinement information indicating whether to refine the motion vectors of the blocks in the current sequence,
- wherein the motion vector is refined according to a size of the current block.
A non-transitory computer readable recording medium storing a bitstream that is received and decoded by an image decoding method,
- wherein the image decoding method comprising:
- decoding, from the bitstream, motion vector refinement information indicating whether to refine motion vectors of blocks in a current sequence;
- determining a motion vector candidate list of a current block based on a neighboring block of the current block;
- decoding, from the bitstream, motion vector prediction information of the current block in the current sequence;
- determining a motion vector of the current block based on the motion vector candidate list and the motion vector prediction information of the current block;
- refining the motion vector of the current block based on the motion vector refinement information;
- and
- reconstructing the current block based on the refined motion vector of the current block,
- wherein the motion vector is refined according to a size of the current block.
Dependencies are inferred from the claim text.