| 摘要 |
<p>When generating an intra-frame prediction signal by means of an extrapolation method as used in the prior art, there are problems in that the prediction accuracy declines in relation to pixels which are situated distantly from the boundaries of an object block, and an image signal having a complex pattern cannot be predicted efficiently. A block divider 102 divides an input image into a plurality of regions. A prediction signal generator 103 generates a prediction signal for the pixel signal contained in an object region, which is the object of processing, among the plurality of regions, and generates a prediction signal by using a texture synthesis method for forming a texture signal for the object region. A subtracter 105 determines a residual signal between the pixel signal of the object region and the prediction signal, and a transformer 106 and a quantizer 107 encode the residual signal to generate a compressed signal.</p> |
