在采用机器视觉对驾驶员进行驾驶行为监测时，嘴部状态识别是关键技术之一。
When we use the machine vision to monitor the driving behavior of a driver, identifying the mouth state is one of the key technologies.
利用改进的视频监测系统来对不良汽车驾驶行为进行实时监测，从而达到减少不良汽车驾驶行为的目的。
The advanced video surveillance technology is proposed to detect unsafe automobile driving behavior. So the unsafe automobile driving behavior will reduce.
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