Feature extraction is one of the key problems in pattern recognition system.
特征提取是模式识别中的一个关键问题。
Precise facial feature points extraction is the key to solve these problems.
特征点精确定位是解决这些问题的关键。
Information security problem is one of the key problems in modern Internet. by active defending feature intrusion detection technology is widely recognized and applied.
在信息安全问题日益突出的互联网中，入侵检测技术以其主动防御的特性，得到越来越广泛的重视和应用。
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