控制信号主要是系统对人脸识别正确与否时的相应提示信号，如语音等。
Control signal is mainly the face recognition system to correct the corresponding prompt signals, such as speech.
如手写汉字识别，人脸识别，网络入侵检测等。
Such as handwritten Chinese character recognition, face recognition, network intrusion detection.
如手写汉字识别，人脸识别，网络入侵检测等。
Such as handwritten Chinese character recognition, face recognition, network intrusion detection.
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