| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To surely add and detect a watermark. <P>SOLUTION: Inputted image data are simply decoded by a simple encoder/decoder 121 and then delivered to additional information over addition discriminator 141. In the additional information over addition discriminator 141, a maximum addition level possible for adding a watermark pattern, for example, and its position information or the like are analyzed and over addition information (k) thereof is delivered to an additional information adder 11. Alternatively, other analysis is performed and the over addition information (k) may also be calculated. In the additional information adder 11, additional information is added at the addition level corresponding to the over addition information (k). <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
