发明名称 |
Digital watermark embedding device, computer-readable recording medium, and digital watermark detecting device and computer-readable recording medium |
摘要 |
An digital watermark embedding device including an interface unit configured to acquire content in a digital form and digital watermark information, the device includes, a codeword generating unit configured to generate a base codeword including a bit sequence including the digital watermark information; a shifting unit configured to generate a plurality of correcting codewords differing from one another by permutating an arrangement in the bit sequence included in the base codeword depending on a plurality of shift amounts, the plurality of shift amounts differing from one digital watermark information to another, under a predetermined permutation rule; and a watermark superimposing unit configured to embed the plurality of correcting codewords in the content.
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申请公布号 |
US8582900(B2) |
申请公布日期 |
2013.11.12 |
申请号 |
US201113296976 |
申请日期 |
2011.11.15 |
申请人 |
NAKAGATA SHOHEI;KURAKI KENSUKE;TAKAHASHI JUN;ANAN TAIZO;FUJITSU LIMITED |
发明人 |
NAKAGATA SHOHEI;KURAKI KENSUKE;TAKAHASHI JUN;ANAN TAIZO |
分类号 |
G06K9/36 |
主分类号 |
G06K9/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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