基于数字图像技术的汽车行驶轨迹状态识别

Driving route status recognition based on digital image technique

为获取驾驶员行驶状态信息与监控行车状况,通过车载CCD图像传感器获得序列图像,应用数字图像理解和计算机视觉技术,建立摄像机的透视投影模型和汽车行驶轨迹状态模型,根据平面图像上的点推导出车辆在空间道路上的实际位置,对车辆行驶过程中相对道路标线的行驶轨迹进行研究。该方法获得的行驶轨迹曲线能够正确判断驾驶员压线行驶、越线行驶与逆向行驶等违章行为,是判别驾驶员行驶状态的有效方法。

In order to monitor driver working states and vehicle traveling conditions at real time, the recognition property of driving routes relative to road traffic mark was analyzed by using the images taken from on-board CCD image sensor, the models of perspective projection and vehicle traveling routes recognition were established by image understanding and computer vision techniques, the vehicle＇s real three-dimensional positions relative to road traffic mark from the dots of planar images were computed. Computation result shows that vehicle＇s calculation traveling routes are coincident with reality, so that driver＇s some peccancy behaviors, such as driving along solid central-line, driving across solid central line and driving along converse roadway, can be decided correctly. 6 figs, 8 refs.