| 发明名称 |
Decoding hidden data from imagery |
| 摘要 |
A digital image in which hidden information has been encoded, is processed to discern the hidden information. This processing can include identifying geometric distortions of the image (e.g., cropping, scaling, rotation), and compensating for such identified distortions.
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| 申请公布号 |
US2005147276(A1) |
申请公布日期 |
2005.07.07 |
| 申请号 |
US20050074997 |
申请日期 |
2005.03.07 |
| 申请人 |
POWELL ROBERT D.;NITZBERG MARK |
发明人 |
POWELL ROBERT D.;NITZBERG MARK |
| 分类号 |
G06T1/00;G06T7/00;G06T9/00;G07D7/00;G07D7/12;G07D7/20;G07F7/12;G09C5/00;H04N1/32;H04N1/387;H04N1/40;H04N7/08;H04N7/081;H04N7/26;(IPC1-7):G06K9/00 |
主分类号 |
G06T1/00 |
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