ANPR LUMO | installation guide
When minimum shutter is set too high (in relation to the vehicle speed) it may cause lower
reading performance because images can turn out blurry.
As a general recommendation, the following exposure (shutter) times are advised:
- shutter time of 50-3000 µs on highways, for high speed vehicles
- shutter time of 50-5000 µs in urban areas, for medium speed vehicles
- shutter time of 100-10000 µs in parking situations, for slow vehicles
MAXIMUM SHUTTER (µs): Maximum shutter refers to maximal exposure time (in microseconds) that the shutter will
stay open. Default 150
LOW RESOLUTION:* Camera sensor can operate in two resolutions, low resolution 640x480 pixels and
high resolution, 1280x960 pixels.
If Low resolution is enabled images will be captured in 640x480 pixel resolution. If
it is disabled high resolution will be activated.
IMAGE ROTATION (deg): In situations where the camera has an oblique view onto the street, it might be
preferable to rotate the camera image after capture so that the license plates
appear horizontal. This is not a strict requirement for good readings, but it can
improve recognition quality. Enter a rotation angle here in order to optimize the
image alignment. The effect of the rotation parameter is directly visible after you
set a new value.
INITIAL IO ACTIVATION: By enabling this option, you activate the IO output pins as soon as the server starts.
Our recommendation is to leave this option disabled at all times.
USE BRIGHTNESS CONTROL:* allows brightness control over the defined region of interest (ROI)
BC MAX BRIGHT PIXELS (%):* Exposure control of the camera counts all good pixels within the Brightness control
ROI. Good pixels are those, which are not too dark or too overexposed. Default 1,00
BC MIN BRIGHT PIXELS (%):* All pixels with lower brightness than set in Brightness control brightness low will be
considered as not enough illuminated pixels. All pixels with higher brightness value
than set in Brightness control brightness high are considered overexposed. Pixels
that are between low and high brightness levels are considered well lighted/correct
pixels. Default 1,00
Note: items marked with a * are advanced features, and not available in the “user” role.
Explanation LED FLASH:
ENABLED FLASH: Turn on/off the embedded IR LEDS
FLASH BRIGHTNESS: Defines the brightness of the IR flash
Explanation DISPLAY INFORMATION:
The set of parameters in the Display Information menu allows you to configure the display of information in Live View
with the On-Screen-Display (OSD).
Enabling/disabling any of these options will take immediate effect on the live image display.
OSD SIZE:* The size of the OSD in the image
OSD POSITION:* Position of the OSD in the image
TEXT INFO: Text prefix is an optional identification name of the camera appointed by the user
OSD DISPLAY OPTIONS: Several options are available from this pull down menu. Click the dialog field to
open the menu.
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