MOVING PICTURE CODING METHOD, MOVING PICTURE DECODING METHOD, MOVING PICTURE CODING APPARATUS, MOVING PICTURE DECODING APPARATUS, AND MOVING PICTURE CODING AND DECODING APPARATUS

摘要

A moving picture coding method includes: coding, using a motion vector, a current block to be coded; generating a plurality of predictive motion vectors; and coding the motion vector using one of the predictive motion vectors, and when a co-located block included in a coded picture and co-located with the current block has two reference motion vectors and reference directions of the two reference motion vectors are the same, a first prediction vector is generated using a first reference motion vector and a second to prediction vector is generated using a second reference motion vector in the generating of a plurality of predictive motion vectors.