IMAGE ENCODING DEVICE, IMAGE ENCODING METHOD, IMAGE ENCODING PROGRAM, IMAGE DECODING DEVICE, IMAGE DECODING METHOD, AND IMAGE DECODING PROGRAM

摘要

In a first inter-image prediction mode using motion vector information, a first mode detection unit generates a first candidate list from a plurality of reference block candidates on the basis of a first predetermined ranking, attaches indexes for specifying the reference block candidates registered in the first candidate list, and outputs the indexes of the plurality of reference block candidates. In a second inter-image prediction mode using a difference motion vector between a predicted motion vector based on motion vector information and a motion vector of a block to be encoded, a second mode detection unit generates a second candidate list from the plurality of reference block candidates on the basis of a second predetermined ranking, attaches indexes for specifying the reference block candidates registered in the second candidate list, and outputs the indexes of the plurality of reference block candidates and the difference motion vector.