How is it that the license plate recognition system of the elevator door in the community does not recognize the personal license plate?

1, quality problem, low recognition rate.

2. If the license plate is recognized, the signal output of the control door is interrupted and the wiring is checked.

3, can not guarantee to get the correct picture, such as the angle is not appropriate, the license plate light is not appropriate, and the license plate picture is not clear enough.

4. Due to the diversity of the collected license plate images and the influence of many factors, such as rain, fog, light, etc. The image quality of some license plates is different in different degrees; Generally speaking, the background of the collected image is very complex, and the position of the license plate in the image is often not fixed, and the size of the license plate is also different, which affects the recognition rate of the license plate.

Extended data:

equipment installation

1. The distance between the image monitoring area and the camera erection position is about 30M~50M.

2. The erection height of the camera is about 2.8M If the erection height is higher, the distance from the image monitoring area must be extended, because the image shooting depression angle of the related camera cannot be too large (about 15 degrees).

3. When using the lens, it should be noted that there are two specifications of the general intersection monitoring lens: 6 ~ 60&; 10 ~ 100 mm.

4. Try to enlarge the position of the license plate and the car from the perspective of image shooting, and don't bring the scenery next to it into the picture to avoid overexposure or unclear license plate.

5. If the infrared (IR) power is used at night, it must be high, because the lamp is also a kind of infrared spectrum. The only way to avoid the exposure effect is to increase the power of IR and give full play to its efficacy.