本文采用基于颜色信息的综合车牌定位法，车牌定位通过以下几个步骤来现：首先是牌粗定位，根据车牌区域横向积分投影连续性的特点，同时利用牌白点数目占据主导的特点，用一个比估计的车牌小的矩形遍历整个边缘二值，提取出大致的车牌范围。然后进行车牌底色的判断。-In this paper, based on color information of an integrated license plate location method, vehicle license plate location is through the following steps: first, rough brand positioning, according to license plate horizontal integral projection of regional continuity features, while taking advantage of the number of licenses is dominated by white spots characteristics, with a smaller than the estimated license plate traverse the entire edge of the rectangle two values, extracted general scope of the license plate. Then license plate background judgments.