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公开(公告)号:US06646676B1
公开(公告)日:2003-11-11
申请号:US09612876
申请日:2000-07-10
申请人: Paul DaGraca , Anthony Vetro , Ajay Divakaran , Huifang Sun
发明人: Paul DaGraca , Anthony Vetro , Ajay Divakaran , Huifang Sun
IPC分类号: H04N718
CPC分类号: G06K9/00771 , G06F17/30805 , G06F17/30811 , G06F17/30814 , G06F17/30843 , H04N7/181 , H04N21/23418 , H04N21/2389 , H04N21/4385 , H04N21/8405
摘要: A surveillance and control system includes a feature extraction unit to dynamically extract low-level features from a compressed digital video signal, a description encoder, coupled to the feature extraction unit, to encode the low-level features as content descriptors. An event detector is coupled to the description encoder to detect security events from the content descriptors, and a control signal processor, coupled to the event detector, to generate control signals in response to detecting the security events.
摘要翻译: 监视和控制系统包括特征提取单元,其从压缩数字视频信号动态地提取低级特征,耦合到特征提取单元的描述编码器,以将低级特征编码为内容描述符。 事件检测器耦合到描述编码器以检测来自内容描述符的安全事件,以及耦合到事件检测器的控制信号处理器,以响应于检测到安全事件而产生控制信号。