发明名称 |
WATERMARK INFORMATION EMBEDDING DEVICE AND METHOD, WATERMARK INFORMATION DETECTING DEVICE AND METHOD, WATERMARKED DOCUMENT |
摘要 |
<p>The present invention is relate to watermark information embedding apparatus and method for the same, watermark information detecting apparatus and method for the same, and method of containing watermark document. A document image generator (101) generates a document image according to document data (105). A watermark image generator (102) generates a watermark image. The watermark information (106) is denoted with dot pattern, and the dot pattern within the outline of the watermark information are of special value. A synthesizer (103) overlaps document image generated from the document image generator (101) and the watermark image generated from the watermark image generator (102) so as to generate a containing watermark document image.</p> |
申请公布号 |
EP1619873(A1) |
申请公布日期 |
2006.01.25 |
申请号 |
EP20040720235 |
申请日期 |
2004.03.12 |
申请人 |
OKI ELECTRIC INDUSTRY CO., LTD. |
发明人 |
MAENO, KURATO |
分类号 |
G06T1/00;H04N1/32;H04N1/387;(IPC1-7):H04N1/387 |
主分类号 |
G06T1/00 |
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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