一种车辆侧后方监控信息抬头显示系统

A head-up display system for monitoring lateral of vehicle

为了减轻驾驶员的驾驶负担,减少和避免车辆转弯、换道过程中发生交通事故,构建了基于DM642的车辆侧/后方监控抬头显示系统.系统采用CCD与激光测距组合技术,提取车辆位置、底部阴影和边缘特征识别目标车辆.为了跟踪目标车辆,采用HSI色彩空间下的改进Camshift算法,并控制伺服设备.通过构建车载抬头显示模块,在车辆换道或转弯时,将侧后方道路上的车辆识别与跟踪信息显示在车辆风挡玻璃上,给驾驶员信息提示,避免驾驶员分散对前方道路的注意力.实际道路实验验证,本系统识别正确率在96%以上,测距正确率在98%以上,耗时在350ms以下.

To reduce the driving loads of driver and avoiding the accidents during turning and lane changing of vehicle,a head-up display system for monitoring rear side of vehicle based on DM642 was developed.The system adopted a combined technology of CCD and laser ranging to recognize target vehicles by extracting the vehicle location,the shadows under the vehicle bottom and edge feature.In order to track target vehicles,the improved Camshift algorithm under the HSI color space was used,and a developed servo device was controlled.The identified and tracked information on the rear side of vehicle was displayed on the windshield via the head-up display module when vehicle turning and lane changing to avoid the distraction from the driving direction.The results of actual road experiment shows that the recognizing correct rate of the system is over 96%,the ranging correct rate is over 98% and the time-consuming is less than 350 milliseconds.