METHOD AND DEVICE FOR ENCODING AND DECODING VIDEO USING INTER-PREDICTION Russian patent published in 2023 - IPC H04N19/53 H04N19/573 H04N19/176 H04N19/513 H04N19/107 

Abstract RU 2802844 C2

FIELD: means for video coding and decoding.

SUBSTANCE: it is determined at the sequence level whether affine motion prediction is enabled by decoding the first high-level syntax element. It is determined, at the image level, whether each of the at least one encoding tool is enabled by decoding one or more second high-level syntax elements. At least one coding tool includes a count-by-count correction of affine motion prediction samples. When the affine motion prediction is enabled, the predictor defines two or three vectors of checkpoints movement of the target block encoded using affine motion prediction are determined, and affine prediction samples are generated for each of the subblocks in the target block by performing affine motion prediction in a unit of subblocks. When sample-by-sample adjustment of affine motion prediction samples is enabled, the predictor modifies the sample values in the affine prediction samples by motion compensation.

EFFECT: increased efficiency of video coding.

13 cl, 22 dwg

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RU 2 802 844 C2

Authors

Kang Je Won

Park Sang Hyo

Park Seung Wook

Lim Wha Pyeong

Dates

2023-09-05Published

2020-06-15Filed