The video surveillance system based on face recognition has the advantage of concealment and non-contact, so it has received extensive attention in recent years.
基于人脸识别的数字视频监控系统由于具有隐蔽性、非接触性等优势，近年来得到了广泛关注。
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Compare with other biometric technologies, such as finger print recognition, face recognition has characteristics of non-contact and friendly interface.
Human face recognition has become a research focus in pattern recognition, because it is a most development potential biometric technology for the characteristics of non-contact, safe and convenient.