An improved license plate correction and localization algorithm based on RGB Hough

Abstract

License plate localization plays a decisive role in license plate recognition.In order to improve the accuracy of character recognition by de-skewing,a license plate correction and location algorithm based on the RGB color space and Hough transform is proposed for the license plate of the blue background with white characters.It can locate the license plate after de-skewing for the license plate is inclined.For the license plate is not inclined,it can be located directly.The license plate localization accuracy is 93%for the license plate is not inclined,and it's 88%for the license plate is inclined.