| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To obtain a predetermined or more compression rate in printing an image having low correlation between pixels when executing compression encoding of depict data by using prediction coding. <P>SOLUTION: While a natural image having a resolution of 600 dpi is enlarged at a predetermined magnification and is printed at a resolution of 1,200 dpi, if the magnification is equal to or greater than two, the natural image is enlarged by using a nearest neighbor method. If the magnification is less than two, a reduction image is generated by reducing an enlargement image obtained by enlarging an object image based on a magnification to 1/2, and the reduction image is enlarged to twice the size by using the nearest neighbor method. The natural image obtained by enlarging in this manner is compressed and encoded by using prediction encoding and run-length encoding with which a run-length value having a prediction error of 0 is calculated. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
