license plate recognition system < / a > three commonly used modes

Mode 1: video recognition mode

The advantage of video opening is that there is no need to install ground induction coil and the comprehensive unit price is small. When the car enters the video identification area, the camera will automatically detect the car number plate message according to the static image of the car and show the simulation together to start the identification. The defect is that it is impossible to output images for unlicensed cars, which is easy to miss cars. If you can't recognize the result of the license plate, you can manually click the analog trigger to recognize it

Mode 2: ground induction coil identification mode

The ground induction coil is turned on. Normally, there will be a deceleration belt under the 10 meter long part in front of the parking lot gate. The car slows down according to the deceleration belt. In order to identify the free time of the car number plate, the car enters the identification area, turns on the ground induction coil, automatically commands the camera to capture, identifies the car number plate according to the self space character inspection, and the gate is released. The advantages of ground induction coil opening license plate recognition depend on the high opening rate, not easy to miss vehicles, easy to use and stable characteristics, and can output image records for unlicensed vehicles. The defect is the sense of installation of decoration works, and the comprehensive unit price is large

Mode 3: Video + ground sense recognition mode

This kind of method is a new upgrade of the first two methods. The video plus ground sensing recognition mode is to identify according to the video identification method and send according to the ground sensing method. Compared with the wechat video recognition mode identified by the ground sensing coil, the video + ground sensing recognition mode can produce a rapid identification rate and higher accuracy. The recognition mode of video + ground sense conversion is a very suitable recognition mode for the use of coordination ability at this stage. The identification area and output area are divided according to the mobile app, and the output position of the car number plate is set at will according to the bad environment of the customer on the spot. It can deal with the problem that the car is identified and output too early. When an unlicensed car drives to the export area, the better to record the information of unlicensed cars