PREDICTION IMAGE GENERATING METHOD AND APPARATUS

摘要

PROBLEM TO BE SOLVED: To efficiently encode moving pictures having luminance changing timewise, such as fade and dissolve images.

SOLUTION: A variable length decoder 303 decodes encoded data 300 including index information 415. The index information 415 indicates: a predictive error signal showing an error of a predictive image signal to a moving picture signal having luminance signal and two color difference signals; motion vector information 414; and a combination of at least one reference image number and a predictive parameter prepared in advance for each of the luminance signal and the two color difference signals. A frame memory/predictive image generator 308 generates a predictive image signal 412 according to the combined reference image number and predictive parameter indicated by the decoded index information, and uses the predictive error signal and the predictive image signal to generate a reproduction moving picture signal.

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