| 摘要 |
An image processing apparatus includes a scanner that relatively moves an image on an original in a sub-scan direction, and reads the image, a main-scan magnification varying section that varies a magnification of image data, which is read by the scanner, in a main-scan direction, a sub-scan magnification varying section that varies a magnification of image data, which is read by the scanner, in the sub-scan direction, a watermark detection section that detects watermark information from the image data that is read by the scanner, and a control circuit that issues an instruction to the scanner, the main-scan magnification varying section and the sub-scan magnification varying section in accordance with a desired magnification ratio.
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