MOVING IMAGE DECODING DEVICE AND MOVING IMAGE CODING DEVICE

摘要

PROBLEM TO BE SOLVED: To improve coding efficiency of coded data in which each layer is coded by a different coding system.SOLUTION: A moving image decoding device comprises: a variable-length decoding unit 13 that decodes a motion vector used in decoding a first layer; a motion information normalization unit 22 that derives an intermediate motion vector on the basis of the decoded motion vector; and a motion information conversion processing unit 20 that derives a motion vector used in decoding a second layer with reference to the derived intermediate motion vector.