确定车辆牌照在原始图像中的水平位置和垂直位置,从而定位车辆牌照,然后采用局部投影进行字符分割。在字符识别部分,提出了在无特征提取情况下基于支持向量机的车牌字符识别方法-Determine the horizontal position and vertical position of the vehicle license in the original image to locate the vehicle license, then the local projection characte

对几个典型国家和地区(美国、欧洲和日本)开发并采用的几种有代表性的行驶工况做了全面的介绍；接着，对它们各自的特征进行深入的研究和对比；最后得出几点结论。(A comprehensive introduction to several typical driving conditions developed and adopted by several typical countries and regions (USA, Europe and Japan); Then, the research

基于前方车辆与本车存在安全距离，利用自适应阈值法确定图像灰度分割阈值，形态学处理，利用最小外接矩形框选候选车辆目标，集合车底阴影几何位置等特征验证车辆假设。(Based on the safe distance between the front vehicle and the vehicle, the adaptive threshold method is used to determine the threshold of image gray level segmentation, mo