Fremgangsmåde til kodning og afkodning af bevægelige billeder

摘要

According to a picture decoding method of the present invention, a coded image signal is decoded to obtain a first reference index that identifies a first reference picture for a current block to be decoded; a second reference index that is different from the first reference index and identifies a second reference picture for the current block to be decoded; a plurality of first weighting coefficient sets and a plurality of second weighting coefficient sets used for generating a predictive image; and a prediction error.
It is further performed a step of designating the first reference picture identified by the first reference index and the second reference picture identified by the second reference index when the current block is decoded through motion compensation and a step of specifying a first weighting coefficient set corresponding to the first reference index from among the plurality of first weighting coefficient sets and a second weighting coefficient set corresponding to the second reference index from among the plurality of second weighting coefficient sets.