车牌自动识别系统主要分为图像预处理、车牌定位、字符分割和字符识别等主要模块, 针对不同的模块,本文研究分析了现有的理论算法,并提出了具有实际应用意义的解决方案。-Automatic license plate recognition system consists of image pre-processing, license plate location, character segmentation and character recognition and other major modules for different modules, this paper analyzes the existing theory and algorithms, and proposed solutions of practical significance.