Back to results
US 2026/0113458 A1Published application
Motion template-matching-based motion refinement
AssigneeAlibaba (China) Co., Ltd.
InventorsJie CHEN, Ru-ling LIAO, Xinwei LI, Yan YE
Life of this patent
Estimating the term…
Abstract
A method of decoding a video bitstream includes: determining a control point motion vector predictor (CPMVP) for an affine coded target block; refining the CPMVP based on a template matching (TM) cost to get a refined CPMVP; deriving the control point motion vector (CPMV) based on the refined CPMVP and a control point motion vector difference (CPMVD); and decoding the affine coded target block based on the CPMV.
Claims20
A method of decoding a video bitstream, comprising:
- determining a control point motion vector predictor (CPMVP) for an affine coded target block;
- refining the CPMVP based on a template matching (TM) cost to get a refined CPMVP;
- deriving a control point motion vector (CPMV) based on the refined CPMVP and a control point motion vector difference (CPMVD);
- and
- decoding the affine coded target block based on the CPMV.
2 more elements
A method of encoding a video bitstream, comprising:
- determining a control point motion vector predictor (CPMVP) for an affine coded target block;
- refining the CPMVP based on a template matching (TM) cost to get a refined CPMVP;
- determining a control point motion vector difference (CPMVD) based on a control point motion vector (CPMV) and the refined CPMVP;
- and
- setting the CPMVD in a bitstream.
2 more elements
A method for transmitting a bitstream, comprising:
- receiving a video sequence;
- encoding the video sequence by:
- determining a control point motion vector predictor (CPMVP) for an affine coded target block;
- refining the CPMVP based on a template matching (TM) cost to get a refined CPMVP;
- and
- determining a control point motion vector difference (CPMVD) based on a control point motion vector (CPMV) and the refined CPMVP;
- and
- signaling a bitstream comprising the CPMVD generated based on the encoding.
5 more elements
Dependencies are inferred from the claim text.