文章提出了一种车牌照字符倾斜的校正方法, 该方法基于Hough 变换和Radon 变换。用Hough 变换检测车牌照上下两边,并对水平倾斜的牌照进行水平校正, 再用Radon 变换检测字符垂直倾斜角度并进行垂直校正, 实验结果表明车牌图像经过二次校正大大减少了字符切分的困难, 有利于后面字符的正确识别。-This paper presents a vehicle license plate characters tilt correction method based on Hough transform and Radon transform. Hough transform to detect vehicle license plate with the top and bottom, and the license to the level of horizontal tilt correction, then the character Radon transform to detect vertical tilt and vertical adjustment, the experimental results show that the correct license plate image is greatly reduced secondary character segmentation difficulties, is conducive to correctly identify the characters behind.