MOVING PICTURE ENCODING/DECODING METHOD AND DEVICE

摘要

A moving picture encoding device includes: a frame memory/prediction image generator (108) having a first prediction mode for selecting one combination from a plurality of combinations of a reference image number and a prediction parameter and generating a prediction image signal (212) and a second prediction mode for generating the prediction image signal according to a prediction parameter calculated according to the reference image number and the inter-image distance of a plurality of reference images; and a variable length encoder (111) for selecting one of the first and the second prediction mode according the number of reference images and encoding orthogonal conversion coefficient information (210) associated with the prediction error signal of the prediction image signal (212) for the input moving picture signal (100), mode information (213) indicating the encoding mode, motion vector information (214), and index information (215) indicating the combination of the selected reference image number and the prediction parameter.