The invention relates to an image processing device, a method and a computer program for improving the legibility of watermark characters in a watermark character synthesis copy. Overlap judgment unit (510) using image data of the watermark image and a scanning unit (20) reads the image data scanned image, the watermark image and the judgment in the overlapping scan image, watermark watermark character and character is due to pixel scanning image watermark image as the value of the specified pixel values above overlap and identification difficult. When it is difficult to judge the watermark character, the watermark image generating unit (503) generates a modified watermark image to correct the watermark image so as to improve the identification of the watermark character. A composite image generating unit (508) generates a composite image of overlapping modified watermark images and scanned images. The print unit (30) forms the composite image on the print medium.
【技术实现步骤摘要】
【技术保护点】
１．一种图像处理装置，其中，具备：存储由一个以上的要素字符构成的水印字符所涉及的第１图像的图像数据的单元；判断单元，其使用上述第１图像的图像数据以及扫描仪读入的第２图像的图像数据，判断在重叠了上述第１图像与上述第２图像时，上述水印字符是否由于上述第１图像的水印字符与上述第２图像的像素值为规定值以上的像素重叠而辨认困难；生成单元，其在通过上述判断单元判断为上述水印字符辨认困难时，使用上述第１图像的图像数据，生成对上述第１图像进行了修正以提高上述水印字符的辨认性的第３图像；以及合成单元，其使用上述第２图像的图像数据以及上述第３图像的图像数据，生成重叠上述第２图像与上述第３图像而成的合成图像。
【技术特征摘要】
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