| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a moving image decoder for estimating the distribution model of the differential image of predicted images, calculating a bit likelihood using the estimated distribution model and improving the performance of decoding utilizing additional information. <P>SOLUTION: The moving image decoder 100 includes an intra decoding part 101, a conversion part 102, a quantization part 103, a decoding-utilizing-additional-information part 104, a reconstruction part 105, an inverse conversion part 106, a frame memory 107, a predicted image generation part 108, a difference calculation part 151, a conversion part 152, a distribution model estimation part 153, and a bit likelihood estimation part 154. The difference image of the predicted image used for generating the predicted image is DCT transformed, a distribution model is estimated from a transformed transformation coefficient, the bit likelihood is calculated using the estimated distribution model and supplied to decoding utilizing additional information. <P>COPYRIGHT: (C)2010,JPO&INPIT |
