| 摘要 |
PROBLEM TO BE SOLVED: To discriminate a character or the like in an image, which is not discriminated in a low-resolution image (coarse image) by means of a conventional thinning image through the use of the low resolution image which is JPEG-compressed as the low-resolution image. SOLUTION: A printer 14 is connected to an automatic re-printing server 11, with CPU such as a DTP personal computer 13 in a customer or the like, and the coarse image (low resolution image) obtained by JPEG compression in the printer 14 is outputted as a high quality image. That is, a high-resolution image inputted by a scanner 12 or the like is divided in two, that is, the high resolution image and the low resolution image (coarse image) when they are preserved in the server 11 in the same way as in the conventional manner. But the low-resolution image in this case is the coarse image obtained through JPEG compression. The low-resolution image obtained through JPEG compression is one obtained by compressing the original image through the use of a JPEG system being one of image preserving systems.
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