| 摘要 |
<p>An image coding and decoding apparatus includes functions, in which an image of every block including either an entire input image or an image divided from the input image is compressed (105), a Radon transform is applied to the compressed image to generate a coefficient (106), the generated coefficient is transformed in a frequency (107), and the frequency transformed coefficient is quantized to generate coding data to generate a coding stream, in the encoding, and an inverse quantization is applied to a coding coefficient included in the coding stream to generate a coefficient (113, 206), an inverse frequency transform is applied to the generated coefficient (114, 207), an inverse Radon transform is applied to the inversed frequency transformed coefficient to generate a decompress image (115, 208), an expand process is applied to the decompression image to decode a residual component (116, 209), and a predicted image is synthesized with the residual component to generate a reconstructed image, in the decoding.</p> |
