发明名称 |
Methods, apparatus and programs for generating and utilizing content signatures |
摘要 |
The present invention relates to deriving and utilizing content signatures. A content signature is a representation of a content item, which is derived from the content item itself. According to the invention, a method of generating a content signature for a signal is provided. The method includes the steps of: i) dividing the signal into at least one set; ii) transforming the set into a frequency-based domain; iii) determining features of the transformed set; and iv) grouping the features so as to form a content signature of the set. |
申请公布号 |
AU3281702(A) |
申请公布日期 |
2002.07.01 |
申请号 |
AU20020032817 |
申请日期 |
2001.12.19 |
申请人 |
DIGIMARC CORPORATION |
发明人 |
HUGH L. BRUNK;KENNETH L. LEVY |
分类号 |
G06K9/00;H04L9/00;H04N11/02 |
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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