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General information
The declared recognition quality is guaranteed if the cameras are installed at angles of not more than 20 degrees to the perpendicular to the plate. In case of larger angles (up to 45 degrees) the numbers will be recognized, although the recognition accuracy will decrease.
The following table shows the main parameters required for camera installation.
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Licensing of the Auto-Uragan module depends on the number of motion lanes in the video camera control area. Calculation of the numbers of motion lanes is performed by internal module logic and depends on specified sizes of license plate relatively from frame size (see the Setting up the Auto-Uragan module section). Calculation results are presented on the settings panel of the Auto-Uragan software module. Maximal width of motion lane is 3.5 m.So if the width of video camera control area more than 3.5 metres, the license for 2 channels of the Auto-Uragan module is required. If the width of control area more than 7 metres, the license for 3 channels is required. |
Camera location on the road
By default, the cameras are installed at a height of 6 m above the controlled lane edge. The control zone center is located 20 m from the camera. The camera is tilted at an angle of18 degrees.
We recommend placing the cameras above the edge of the road, and not above the center. In this case, the horizontal inclination will amount to 4 degrees for the control zone width of 3 m.
Camera location at the security sites
By default, the cameras controlling the security site entrances and exits are located at a height of 3 m above the lane edge. The control zone center is then located 11 m from the camera.
Setup of the lens focal length
After the camera is mounted, the lens focal length should be adjusted to the required viewing distance.
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- Direct the camera at the road area where the license plate numbers are to be read;
- Place a license plate in the center of the control zone. The plate should be perpendicular to the camera axis;
- Zoom the lens to make the license plate occupy approximately 1/5 of the image at the center of the image;
- Lock the zoom position;
- Adjust the image sharpness.
Camera setup
To set up the camera, do the following:
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