基于DM6437的驾驶员疲劳检测系统  

Driver Fatigue Detection System Based on DM6437

作　　者：苑玮琦[1] 贾琦[1] 

机构地区：[1]沈阳工业大学视觉检测研究所,辽宁沈阳110870

出　　处：《仪表技术与传感器》2010年第5期51-53,55,共4页Instrument Technique and Sensor

基　　金：国家自然科学基金项目(60672078)

摘　　要：介绍了一种基于DM6437的嵌入式驾驶员疲劳检测系统的总体设计方案。根据人眼的红眼效应,采用一种特殊的近红外光源,并通过DSP控制,使得系统实时采集到瞳孔亮暗程度不同的奇偶帧图像。利用这个特点,将奇偶帧差分图像与它自身大结构元素的中值滤波图像相减,从而快速准确地找到人眼区域。然后使用自定义模板搜索该区域,找到上下眼睑的边缘曲线并提取特征参数。最后,通过计算单位时间内的PERCLOS值来判断驾驶员的疲劳程度。实验表明,该系统具有对驾驶员无干扰、受外界环境影响小以及准确率高等优点,适合在汽车驾驶中进行实时疲劳检测。This paper presented a design of the embedded driver fatigue detection system based on DM6437.According to red-eye effect,using a special near-infrared light source and controlling it by DSP,the system real-time captures bright pupil images odd frames and dark pupil images even frames.Using this feature,the system makes the odd-even frame difference image and its median filtering image subtract,so that it can quickly and accurately locate the eye area.It used a definition template to seek for the edges of the upper and lower eyelid curves in the eye area and extract the characteristic parameter.Finally,the system determines the driver＇s fatigue by calculating the value of PERCLOS in the unit time.The experimental result indicates that the system is non-interference to the driver,small environmental effect as well as the high accuracy,which is suitable for real-time fatigue detection during the driving.

关 键 词：疲劳检测 近红外光源 红眼效应 

分 类 号：TM769[电气工程—电力系统及自动化] TP39[自动化与计算机技术—计算机应用技术]