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为了解决车路协同系统中车辆定位误差较大的问题,提出了一种基于信息标识识别的车辆定位方法。该方法设计了一种能够储存道路信息的信息标识,并在路面上设置信息标识。当车辆驶过标识时,安装于车上的成像装置实现对信息标识图像的拾取。利用加权最小二乘法对图像进行直线拟合得到车辆的运动方向,识别图像信息得到车辆的精确位置,结合车辆对于自身运动状态的感知,从而实现车辆的精确定位。试验结果表明,车辆的运动方向检测误差仅为0.71°,定位误差仅为2.17 cm。可见该方法在车辆定位上更为直接、准确、成本低廉。
In order to solve the problem of large vehicle location error in vehicle coordination system, a vehicle location method based on information identification is proposed. The method designs an information identifier that can store the road information and sets the information identifier on the road. The imaging device mounted on the vehicle realizes the pickup of the information identification image when the vehicle passes the logo. The weighted least squares method is used to fit the image of the vehicle in a straight line to get the movement direction of the vehicle. The accurate position of the vehicle is obtained by recognizing the image information. With the vehicle ’s perception of the movement state, the precise positioning of the vehicle can be achieved. The test results show that the detection error of the vehicle movement direction is only 0.71 ° and the positioning error is only 2.17 cm. Shows that the method of positioning the vehicle more direct, accurate and low cost.