发明名称 |
Method of authenication for steganographic signals undergoing degradations |
摘要 |
A method for authenticating a printed or scanned embedded image is disclosed that utilizes a prediction of the effect of a print or scanning process on the embedded message based upon characteristics of the printer or scanner. These values are measured directly at the time of authentication and compared to the predicted. Based on the comparison a decision is made regarding authenticity.
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申请公布号 |
US2004091131(A1) |
申请公布日期 |
2004.05.13 |
申请号 |
US20020292665 |
申请日期 |
2002.11.12 |
申请人 |
EASTMAN KODAK COMPANY |
发明人 |
HONSINGER CHRIS W.;PAZ-PUJALT GUSTAVO R.;WILLIAMS DONALD R.;CARMEN JERRY |
分类号 |
G06T1/00;H04N1/32;(IPC1-7):G06K9/00 |
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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