ANPR LUMO | installation guide
7 Configuration menus
7.1 CAMERA
After installation camera configuration should take place. The essential segment of ANPR is image acquisition. Quality of
images depends on the camera and illumination preferences.
The area within the green polygon is the brightness control region of interest (ROI). It defines the image area within
which the camera measures and corrects the image brightness. With the “SYNC” button you can synchronize the
Region of interest settings from the ANPR menu.
It is important to minimize this surface and limit it to the area only where plates are expected to appear. This
maximizes the impacted of brightness control parameters during image acquisition, on the selected area. Any change
will be stored directly!
Explanation CAMERA SETTINGS:
MIMIMUM GAIN (DB): Gain controls the amplification of the signal from the cameras sensor. It boosts the
signal by some amount thereby making already captured images look brighter. As a
result of signal enhancement negative image blur may occur. Default 0
MAXIMUM GAIN (DB): Gain controls the amplification of the signal from the cameras sensor. It boosts the
signal by some amount thereby making already captured images look brighter.
As a result of signal enhancement negative image blur may occur. The reason is
that the overall signal is boosted, making also noise more visible.
Reasonable upper limits are typically 6-10 db. We recommend a maximum gain
value of 10 for the Camera. Default 10
MINIMUM SHUTTER (µs): Minimum shutter refers to minimal exposure time in microseconds that the shutter
will stay open. Default 1
Shutter speed should be changed according to vehicle speed. If the vehicle is approaching in
high speed, the exposure time should be reduced.
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