发明名称 |
Authentication of identification documents and banknotes |
摘要 |
The present invention provides methods and systems that are helpful authentication of physical and electronic documents like financial documents and identification documents. Steganographic indicia plays a role in some of our implementations. In other implementations we bind design features to a user or to a document. In still other implementations we provide authentication methods to evaluate security documents.
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申请公布号 |
US7239734(B2) |
申请公布日期 |
2007.07.03 |
申请号 |
US20050312247 |
申请日期 |
2005.12.19 |
申请人 |
DIGIMARC CORPORATION |
发明人 |
ALATTAR ADNAN M.;RHOADS GEOFFREY B. |
分类号 |
G06K9/00;G06T1/00;G07D7/00;G07D7/12;H04N1/32 |
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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