| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide methods for compressing and decompressing image data which are free from degradation of image quality caused by compression/decompression, and have a high compression ratio. <P>SOLUTION: In the image data compressing method, image elements contained in a digital image read from a sheet of paper are extracted (S02), each of the extracted image elements (51-53) is subjected to data compression by a compression method corresponding to the type of the image element (S03-S05), and the compressed image element data (54-56) are stored. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
