| 摘要 |
PROBLEM TO BE SOLVED: To provide a watermark embedding device which can suppress image quality deterioration of document images owing to watermark embedding. SOLUTION: The watermark embedding device is for embedding a watermark pattern showing predetermined embedding information in an input image. The watermark embedding device 100 is characterized by having a watermark area determining part 110 which determines a watermark area where watermark patterns corresponding to each code of encoded embedding information are arranged on an input image; a watermark pattern determining part 120 which determines watermark patterns matched with each code based on the input image in the watermark area; and a watermark embedding part 130 which arranges the watermark patterns based on matching of the codes with the watermark patterns and embeds them in the input image. COPYRIGHT: (C)2009,JPO&INPIT
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