| 摘要 |
<P>PROBLEM TO BE SOLVED: To hold alternative character string information given to an image when printing an electronic document. <P>SOLUTION: An analysis means analyzes a structured document. When the analysis means detects a link to image data, an acquisition means obtains the image data. When the analysis means detects a character string explaining the image data, an embedding means embeds the character string into the image data obtained by the acquisition means, as a digital watermark. An extracted alternative character string is read out in response to detection of watermark information. <P>COPYRIGHT: (C)2009,JPO&INPIT |
