发明名称 |
Data processing apparatus and method |
摘要 |
A detecting data processing apparatus determines whether one or more code words of a predetermined set of code words are present in a suspected version of a material item. The apparatus comprises a registration processor operable to associate samples of the suspected version with samples of a copy of the original material item, a recovery processor and a detection processor. The recovery processor is operable to generate a recovered code word by comparing the registered copy of the original and the suspect material items. The detection processor is operable to detect one or more code words from a correlation between the recovered code word and the code words from the set. The registration processor is operable to form at least one reduced-bandwidth-version of the material item and to associate the suspected version and the copy of the material item in accordance with a comparison between the reduced-bandwidth-versions of the suspected version and the original material item.
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申请公布号 |
US7194108(B2) |
申请公布日期 |
2007.03.20 |
申请号 |
US20030611735 |
申请日期 |
2003.07.01 |
申请人 |
SONY UNITED KINGDOM LIMITED |
发明人 |
TAPSON DANIEL WARREN |
分类号 |
G06K9/00;G06T1/00;H04N1/32;H04N1/387;H04N7/08;H04N7/081 |
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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