Coding method and decoding method

摘要

A coding method of performing compression coding of a moving picture by motion compensated prediction may comprise: a compensated prediction step of performing the motion compensated prediction while selecting one reference frame out of a plurality of reference frames retained for the motion compensated prediction, in a unit consisting of one or more second blocks obtained by sub-dividing each of first blocks resulting from division of a frame of the moving picture; and a reference frame information coding step of outputting information about a selection situation of the reference frame for said one or more second blocks in a multiplexed form on a bitstream.