车牌识别技术是现代智能交通系统重要组成部分，其应用十分广泛。它以计算机视觉处理、数字图像处理、模式识别等技术为基础，对摄像机所拍摄的车辆图像或者视频图像进行处理分析，得到每辆车的车牌号码，从而完成识别过程。通过一些后续处理技术其可以实现停车场出入口收费管理、盗抢车辆管理、高速公路超速自动化管理、闯红灯电子警察、公路收费管理等等功能。对于维护交通安全和城市治安，防止交通堵塞，实现交通全自动化管理有着现实的意义。
License plate recognition technology is an important part of modern intelligent transportation system, which is widely used. Based on computer vision processing, digital image processing, pattern recognition and other technologies, it processes and analyzes the vehicle image or video image captured by the camera, and obtains the license plate number of each vehicle, thus completing the recognition process. Through some follow-up processing technology, it can realize the functions of parking lot entrance and exit charge management, stolen and robbed vehicle management, highway overspeed automatic management, red light running electronic police, highway charge management and so on. It has practical significance for maintaining traffic safety and urban public order, preventing traffic jams and realizing full automatic traffic management.