VIDEO ENCODING DEVICE, VIDEO DECODING DEVICE, VIDEO ENCODING METHOD, VIDEO DECODING METHOD, VIDEO ENCODING PROGRAMME AND VIDEO DECODING PROGRAMME

摘要

FIELD: physics, computer engineering.SUBSTANCE: invention relates to computer engineering. A video encoding device uses motion-compensated inter-frame prediction for each block by dividing an image into blocks, each having a predetermined size, and includes a first component encoding means which encodes a difference value of a first component, and a second component encoding means which obtains a probability of occurrence of a candidate value for a second component value of the MV of the encoding target block based on a difference value between the first component value of the MV of the neighbouring block and the first component value of the MV of the encoding target block and the second component value of the MV of the neighbouring block, specifies a codeword of the second component value based on the occurrence probability, and encodes the second component value.EFFECT: high encoding efficiency owing to fewer bits of the motion vector (MV).6 cl, 16 dwg