运用车底阴影特征实现图片中的前方车辆检测(Use vehicle shadow feature to detect vehicle in front of image)

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