MOVING IMAGE DECODING METHOD AND APPARATUS

摘要

PROBLEM TO BE SOLVED: To enable highly efficient coding for a moving image in which the luminance changes in time such as a fading image or a dissolve image.

SOLUTION: The decoding method includes a step in which a variable length decoder 303 decodes coded data 300 including a predictive error signal indicating an error for a predictive image signal for a moving image signal having a luminance signal and two color difference signals, motion vector information 414 and index information 415 indicating a combination between at least one reference image number and a predictive parameter previously prepared for each luminance signal and two color difference signals; a step in which a frame memory/predictive image generator 308 generates a predictive image signal 412 in accordance with the reference image number and the predictive parameter of the combination indicated by the decoded index information; and a step in which a reproduced moving image signal is generated using the predictive error signal and the predictive image signal.

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