What are the recognition modes of the license plate recognition camera? What is the effect of license plate recognition?

The advantage of video trigger is that there is no need to install ground loop and the workload is small. When the vehicle enters the video recognition area, the license plate recognition camera automatically recognizes the license plate information through the dynamic image of the vehicle, and at the same time provides analog trigger recognition. The disadvantage is that the license plate recognition camera can't output the image of unlicensed car, which is easy to miss the car. If the license plate result is not recognized, you can manually click the analog trigger to recognize it.

Second, the grounding circuit identification mode

The ground loop is triggered. Generally, there will be a speed bump in front of the parking lot gate 10 meters. When the vehicle passes through the speed bump, it will slow down, allowing time to identify the license plate. When the vehicle enters the recognition area, it will trigger the ground loop and automatically command the license plate recognition camera to take a snapshot. Through the word detection, the license plate is recognized and the gate is released. The license plate recognition triggered by the ground loop has the advantages of high trigger rate, difficulty in missing cars, practicality and stable performance, and can output image records for unlicensed cars. The disadvantage is that it requires a sense of construction and installation, and the amount of work is large.

Third, video+ground sense recognition mode

This mode is an upgraded version of the first two modes, and the video plus ground sense recognition mode is recognized by the video recognition mode of the license plate recognition camera and uploaded by the ground sense transmission mode. Compared with ground loop recognition mode and video recognition mode, video+ground sense recognition mode can provide faster recognition speed and higher recognition rate. The recognition mode of flexible switching between video and ground sense is the most flexible recognition mode at present. The problem of car-following recognition or premature output can be solved by defining the recognition area and output area by software and setting the output position of license plate freely according to the customer's site environment. When the unlicensed car drives to the output area, the license plate recognition camera can easily record the information of the unlicensed car.

Source: Wentong Technology