| 摘要 |
PROBLEM TO BE SOLVED: To overlay a watermark on various kinds of image data and simplify document management. SOLUTION: In a watermark process section in an image processing apparatus, a visible watermark pattern read-out section reads out a visible watermark pattern that is stored in a memory. An invisible watermark generating section draws an invisible watermark on the read-out visible watermark pattern. Image data, which include both the visible watermark and drawn invisible watermark, are multiplied by an overlay ratio. An adder section adds the visible/invisible watermark image data, which is multiplied by the overlay ratio, and input image data. Thus, watermark-overlaid image data are generated. COPYRIGHT: (C)2006,JPO&NCIPI
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