| 摘要 |
<P>PROBLEM TO BE SOLVED: To efficiently encode a video having temporally-changing luminance such as a fade image or a dissolved image. <P>SOLUTION: A variable-length decoder 303 decodes encoded data 300 including a prediction error signal representing an error of a prediction image signal with respect to a video signal having a luminance signal and two color difference signals, motion vector information 414, and index information 415 indicating combination of at least one reference image number, and predictive parameters prepared for each of the luminance signal and the two color difference signals. A prediction image signal 412 is generated in accordance with the reference image number and the predictive parameter of the combination indicated by the decoded index information by a frame memory/prediction image generator 308, to generate a reproduced video signal by using the prediction error signal and the prediction image signal. <P>COPYRIGHT: (C)2010,JPO&INPIT |
