基于计算机图像处理技术的汽车牌照自动识别系统,要求能够将运动中汽车的牌照从复

杂背景中准确地提取并识别出来。介绍了所研制的汽车牌照自动识别系统和关键技术(图像分割

与车牌定位、图像二值化和字符提取、车牌字符识别等) 。试验结果显示,系统在Celeron Ⅱ633+

128M 的PC 机上,对图像尺寸为768 ×574 的311 幅试验图片的识别准确率达到90 ,识别时间≤

1. 5s。-The objective of automatic vehicle number plate recognition systems (AVNPRS) is to

accurately ext ract and recognize the vehicle number plate f rom the complicated background. AVNPRS

we developed can realize functions of real2time image capturing , number plate segmentation , number

plate pre2processing and character recognition etc. The experiment result s show that the total recogni2

tion success rate can achieve 90　 with relatively short time cost , about 1. 5 (with a total number of

311 experimental images which resolution is 768 ×574) .