对于车牌灰度图像进行滤波去噪后先用峰谷法二值化，再用垂直投影法进行分割，最后后进行模板匹配，并用弧向判定法匹配对几组易出错的字符进行检测，从而的到车牌号。

-License plate grayscale image filter denoising with a peak-to-valley method after the first two values, then the vertical projection of the dividing Finally after the template matching, and to the determination method using the arc matching several groups of error-prone characters detected, thereby to the license plate number.