发明名称 |
Deriving Video Signatures That Are Insensitive to Picture Modification and Frame-Rate Conversion |
摘要 |
A signature that can be used to identify video content in a series of video frames is generated by first calculating the average and variance of picture elements in a low-resolution composite image that represents a temporal and spatial composite of the video content in the series of frames. The signature is generated by applying a hash function to values derived from the average and variance composite representations. The video content of a signal can be represented by a set of signatures that are generated for multiple series of frames within the signal. A set of signatures can provide reliable identifications despite intentional and unintentional modifications to the content.
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申请公布号 |
US2010238350(A1) |
申请公布日期 |
2010.09.23 |
申请号 |
US20080600466 |
申请日期 |
2008.05.01 |
申请人 |
DOLBY LABORATORIES LICENSING CORPORATION |
发明人 |
RADHAKRISHNAN REGUNATHAN;BAUER CLAUS |
分类号 |
H04N5/14 |
主分类号 |
H04N5/14 |
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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