METHOD FOR SKIPPING REFINEMENT BASED ON SIMILARITY OF INSERTION, WHEN REFINING MOTION VECTOR ON DECODER SIDE BASED ON BILINEAR INTERPOLATION Russian patent published in 2022 - IPC H04N19/513 H04N19/557 H04N19/53 H04N19/573 

FIELD: video encoding.

SUBSTANCE: invention relates to means for motion compensation in encoding. Using a decoder, unrounded vectors of fusion motion are obtained between two reference insertions with motion compensation. Using the decoder, unrounded vectors of fusion motion are rounded to obtain rounded motion vectors. Using the decoder, a sum of absolute differences (hereinafter – SAD) between two reference insertions with motion compensation is calculated by motion compensation, using rounded motion vectors. Using the decoder, it is determined, whether SAD is less than a threshold value depending on a size of a coding unit (hereinafter – CU). When SAD is less than the threshold value depending on CU size, the rest stages of a process of refinement of the motion vector on a decoder side (hereinafter – DMVR) are skipped, and final motion compensation is performed. When SAD is not less than the threshold value depending on CU size, the rest stages of DMVR process are performed using unrounded vectors of fusion motion, and final motion compensation is performed.

EFFECT: increase in the efficiency of video encoding.

30 cl, 8 dwg