MOVING PICTURE CODING APPARATUS, MOVING PICTURE DECODING APPARATUS, MOVING PICTURE CODING METHOD, MOVING PICTURE DECODING METHOD, PROGRAM, AND COMPUTER-READABLE RECORDING MEDIUM CONTAINING THE PROGRAM

摘要

It is possible to express a prediction image signal with a small overhead and to provide motion compensation of different pixel accuracies. A moving picture coding apparatus (20) includes motion vector detection means (32) for detecting a motion vector in a predetermined region to be coded within a frame image, prediction means (33c) for using the motion vector in the predetermined region coded within the frame image so as to predict the motion vector in the predetermined region to be coded, judgment means (33d) for judging whether the motion vector detected by the motion vector detection means (32) is the predetermined motion vector preset according to a motion vector predicted by the prediction means (33c), and switching means (33e) for switching the methods for calculating the motion compensation value of the predetermined region to be coded depending on whether the motion vector detected by the motion vector detection means (32) is the predetermined motion vector or other than the predetermined motion vector.