FIELD: computer equipment.
SUBSTANCE: image decoding device comprises: decoding unit from bit stream information on motion vector difference for current block and information on motion vector predictor for current block; candidate determination unit; and motion vector recovery unit, wherein changed group of motion vector predictors includes one of first motion vector predictors and motion vector candidate second predictor, wherein first motion vector predictors are based on motion vectors of neighbouring blocks of current block, and second predictor-candidate motion vector is based on motion vector jointly located unit for current unit, and jointly located unit is in reference image, wherein the neighbouring units include a first unit located from below to the left of the current unit, and include a second unit located from the top of the first unit.
EFFECT: high compression ratio when decoding images.
9 cl, 28 dwg
