DEVICE AND METHOD FOR MOTION VECTOR ENCODING AND DEVICE AND METHOD FOR MOTION VECTOR DECODING Russian patent published in 2023 - IPC H04N19/513 H04N19/139 H04N19/105 H04N19/52 H04N19/11 

FIELD: image encoding and decoding.

SUBSTANCE: resolution of the motion vectors of the current block is determined. The first neighbouring block is selected from the plurality of neighbouring blocks adjacent to the current block using the resolution of the motion vectors of the current block. If the current block refers to a reference frame in list 0 and the first neighbouring block refers to a reference frame in list 0, a motion vector predictor is determined using the motion vector of the first neighbouring block. If the current block refers to a reference frame in list 0 and the first neighbouring block refers to a reference frame in list 1, the default motion vector is determined based on the motion vector of the second neighbouring block from the plurality of neighbouring blocks adjacent to the current block, and the motion vector predictor of the current block is determined by using the default motion vector. A bitstream is generated containing information indicating the resolution of the motion vectors of the current block and the differential motion vector determined using the motion vector of the current block and the predictor of the motion vector of the current block.

EFFECT: increased efficiency of image encoding.

9 cl, 32 dwg