| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To avoid deterioration of an image quality in decoding while reducing the coding amount in coding. <P>SOLUTION: In the event of coding, a whole input image or an image per unit of a block obtained by dividing the input image is compressed, Radon transform is applied to the compressed image to generate a coefficient, the generated coefficient is frequency-transformed, and the frequency-transformed coefficient is quantized to generate coded data to generate a coded stream. In the event of decoding, an inverse quantization is applied to a coding coefficient included in the coded stream to generate a coefficient, an inverse frequency-transform is applied to the generated coefficient, inverse Radon transform is applied to the inverse frequency-transformed coefficient to generate a decompressed image, an expand process is applied to the decompressed image to decode a residual component, and a predicted image is synthesized with the residual component to generate a reconstructed image. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
