首先是车牌识别系统的识别率，一个车牌识别系统是否实用，最重要的指标是识别率。国际交通技术部门做过专门的识别率指标论述，要求是24小时全天候全牌正确识别率85%～95%。为了测试一个车牌识别系统识别率，需要将该系统安装在一个实际应用环境中，全天候运行24小时以上，采集至少1000辆自然车流通行时的车牌照进定送水 铜鼎铜钟 淤泥固化设备 化粪池钢模具 拱形骨架模具 保定代理记账 保定道闸
行识别，并且需要将车辆牌照图像和识别结果存储下来，以便调取查看。然后，还需要得到实际通过的车辆图像以及正确的人工识别结果。保定工地门禁系统分享
The first is the recognition rate of the license plate recognition system. The most important indicator of whether a license plate recognition system is practical is the recognition rate. The international transportation technology department has conducted a specialized discussion on the recognition rate index, which requires a 24/7 correct recognition rate of 85% to 95% for all license plates. In order to test the recognition rate of a license plate recognition system, it is necessary to install the system in a practical application environment, operate it 24 hours a day or more, collect at least 1000 license plates from natural traffic flow for recognition, and store the license plate images and recognition results for easy retrieval and viewing. Then, it is also necessary to obtain the actual passing vehicle images and the correct manual recognition results. Baoding Construction Site Access Control System Sharing
其次，车牌识别系统的识别速度也很关键。识别速度决定了一个车牌识别系统是否能够满足实时实际应用的要求。一个识别率很高的系统，如果需要几秒钟，甚至几分钟才能识别出结果，那么这个系统就会因为满足不了实际应用中的实时要求而毫无实用意义。例如，在高速公路收费中车牌识别应用的作用之一是减少通行时间，速度是这一类应用里减少通行时间、避免车道堵车的有力保障。国际交通技术提出的识别速度是1秒以内，越快越好
Secondly, the recognition speed of the license plate recognition system is also crucial. The recognition speed determines whether a license plate recognition system can meet the requirements of real-time practical applications. A system with a high recognition rate, if it takes a few seconds or even minutes to recognize the results, will have no practical significance because it cannot meet the real-time requirements in practical applications. For example, one of the functions of license plate recognition applications in highway toll collection is to reduce travel time, and speed is a powerful guarantee for reducing travel time and avoiding lane congestion in such applications. The recognition speed proposed by international transportation technology is within 1 second, the faster the better
