发明名称 |
Embedding and detecting hidden information |
摘要 |
A novel method is disclosed for embedding hidden information in a document comprising characters, including: determining hidden information to be embedded in each class of layout transformation respectively; acquiring a code sequence for each class of layout transformation by coding the hidden information to be embedded in the class of layout transformation; performing layout transformation on characters from the document according to the acquired code sequence for each class of layout transformation respectively. |
申请公布号 |
US8311265(B2) |
申请公布日期 |
2012.11.13 |
申请号 |
US20080050055 |
申请日期 |
2008.03.17 |
申请人 |
WANG DONGLIN;YIN SHUTIAN;ZHANG YUNMING;LIU NINGSHENG;LIANG YUANSONG;LIU CHANGWEI;OUYANG DE;GAO PENG;LOU YONGZHI;BEIJING SURSEN INTERNATIONAL INFORMATION TECH CO. |
发明人 |
WANG DONGLIN;YIN SHUTIAN;ZHANG YUNMING;LIU NINGSHENG;LIANG YUANSONG;LIU CHANGWEI;OUYANG DE;GAO PENG;LOU YONGZHI |
分类号 |
G06K9/00 |
主分类号 |
G06K9/00 |
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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