重庆理工大学学报（自然科学版）2017，Vol.31Issue(3)：97-104,8.DOI:10.3969/j.issn.1674-8425(z).2017.03.014
基于区域划分和霍夫变换的车牌倾斜校正
License Plate Tilt Correction Based on Region Partition and Hough Transform
王越 1黄龙超 1李琴1
作者信息
- 1. 重庆理工大学计算机科学与工程学院,重庆400054
- 折叠
摘要
Abstract
License plate tilt will reduce the accuracy of character segmentation and recognition.A license plate tilt correction method based on region partition and Hough transform is proposed.Firstly,positioning the plate was divided into equal height regions along vertical direction according to threshold.Then through the Hough transform to obtain the maximum angle of all regions is the horizontal angle,equally in the horizontal direction from both sides to the middle division of the subregions,and the maximum angle between the two sides and the middle of the hough transform is the vertical tilt angle,and the bilinear interpolation rotation correction is carried out on the horizontal inclined and the vertical tilt correction dislocation of the offset.By the method of region division,we can effectively reduce the search area of Hough transform and improve the speed of correction.The experiment results show that the algorithm is simple,and the accuracy is high and the robustness is strong.关键词
车牌识别/倾斜校正/霍夫变换/区域划分Key words
license plate recognition/tilt correction/Hough transform/region partition分类
信息技术与安全科学引用本文复制引用
王越,黄龙超,李琴..基于区域划分和霍夫变换的车牌倾斜校正[J].重庆理工大学学报（自然科学版）,2017,31(3):97-104,8.
