机动车牌照定位、分割系统研究与设计  

Design of Positioning and Segmentation System of Vehicle License Plate

作　　者：关晓丹[1] 王宝珠[2] 相楠[1] 

机构地区：[1]北华航天工业学院电子工程系,河北廊坊065000 [2]河北工业大学信息工程学院,天津300130

出　　处：《拖拉机与农用运输车》2010年第4期52-53,56,共3页Tractor & Farm Transporter

摘　　要：车牌自动识别系统是智能交通系统中的关键技术,而车牌的定位和分割是实现这一技术的首要环节。介绍了一种基于灰度跳变特征的汽车牌照图像定位、分割系统,利用预处理后的汽车图像的灰度特征完成车牌的定位,并结合车牌区域的投影特点完成字符分割,同时采用线性拟合的方法避免了车牌悬挂角度对字符分割过程的影响。该系统在MATLAB环境下实现,可以实现快速、准确的车牌字符定位。Automatic license plate recognition system is a key technology in the intelligent transportation system.License-plate location and segmentation is the first step of the process.In this paper,it presents a license-plate location and segmentation system which is based on the characteristics of gray-scale vehicle license image.The gray-scale transformation features and projection characteristics of license-plate images are used to complete the design of this system.At the same time,linear fitting method is adopted in order to avoid the impact of hanging plate angle on the process of character segmentation.This system is designed based on MATLAB image processing,which can realize license-plate location and character segmentation quickly and accurately.

关 键 词：车牌定位 字符分割 图像灰度跳变特征 投影特征 MATLAB 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]