MOTION PICTURE PREDICTION METHOD, MOTION PICTURE ENCODING METHOD AND APPARATUS, AND MOTION PICTURE DECODING METHOD AND APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a motion picture prediction method with which computational complexity and memory capacity can be reduced when predicting a motion picture using scaling processing.

SOLUTION: The method for predicting a value P at a time T from a value P0 at a time T0 and a value P1 at a time T1 includes the steps of: deciding whether a predictive value can be produced with the predetermined number of valid bits by scaling using the time T0, the time T1 and the time T (step S90); predicting the value P from the value P0 and the value P1 by scaling using the time T0, the time T1 and the time T when the predictive value can be produced with the predetermined number of valid bits (step S92), and predicting the value P from the value P0 and the value P1 without using the time T0, the time T1 and the time T when the predictive value can not be produced with the predetermined number of valid bits (step S91).

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