| 发明名称 |
Image marking to permit later identification |
| 摘要 |
A digital image is subtly changed to permit its subsequent identification, without essentially altering its human appearance. The changes affect only a minority of the image pixels. By checking for the presence of such changes in a suspect image, a suspect image can be matched with the original image.
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| 申请公布号 |
US2001002213(A1) |
申请公布日期 |
2001.05.31 |
| 申请号 |
US20010758404 |
申请日期 |
2001.01.10 |
| 申请人 |
DIGIMARC CORPORATION |
发明人 |
POWELL ROBERT D.;NITZBERG MARK J. |
| 分类号 |
G06T1/00;G07D7/00;G07D7/12;G07D7/20;G07F7/12;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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