DYNAMIC IMAGE ENCODING DEVICE, DYNAMIC IMAGE ENCODING METHOD, DYNAMIC IMAGE ENCODING PROGRAM, TRANSMITTER, TRANSMISSION METHOD AND TRANSMISSION PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a motion vector encoding technology and a motion vector decoding technology capable of improving accuracy of motion vector derivation at a decoding side while improving compression efficiency of a motion vector at an encoding side.;SOLUTION: A peripheral block identification part 230 identifies a plurality of encoded peripheral blocks around an encoding object block. An encoding object block count acquisition part 210 acquires the number of motion vectors in the encoding object block. A peripheral block motion vector count acquisition part 220 acquires the numbers of motion vectors in the peripheral blocks. If one peripheral block including motion vectors as many as the number of motion vectors in the encoding object block is present among the identified plurality of peripheral blocks, a predictive motion vector derivation part 240 identifies the peripheral block as a prediction candidate block and defines motion vectors in the prediction candidate block as predictive motion vectors.;SELECTED DRAWING: Figure 5;COPYRIGHT: (C)2016,JPO&INPIT