By default, the Sharp is configured to automatically adjust exposure settings for
changing light conditions when capturing plates. You can use the Exposure
Settings on the Live feed page of the Sharp portal to
adjust the Gain and Shutter time range if your
plate reads are underexposed (too dark).
What you should know
- When adjusting a setting, the other settings are temporarily disabled so you can see
your change immediately in the Video feed window.
- Minimum range values cannot exceed the maximum range values.
Procedure
-
Log on to the Sharp portal in
Advanced mode.
-
Click the Live feed tab.
-
From the Camera drop-down list, select LPR camera
from the drop-down list to view its live feed.
NOTE: On a SharpX you can have more than one
camera set, therefore you will see LPR camera 2,
LPR camera 3, and so on.
-
Under Exposure settings, make sure the
Auto-exposure checkbox is selected.
NOTE: Auto-exposure is enabled by default.
-
Increase the minimum value for the Gain range.
-
Increase the minimum value for the Shutter time
range.
IMPORTANT: Increasing the minimum values for the
Gain and Shutter time range
should be performed during the night with the plates closer to the Sharp
camera.
-
(Optional) If your plate reads are still too dark after modifying the minimum
values for the Gain and Shutter time
range, then it is recommended to increase the maximum values for the
Shutter time and Gain range.
NOTE: Increasing the maximum Shutter time and
Gain range values should be done on a dark day with the plates
further away from the Sharp camera.
-
Increase the maximum value for the Shutter time
range.
-
(Optional) If you cannot increase the maximum Shutter
time range value anymore without overexposing the plates, or the
plate images are still too dark, increase the maximum value for the
Gain range.
IMPORTANT: It is important not to increase the maximum values for
the Gain and Shutter time
range too much because it may produce image artifacts, or overexposed plates
in bright sunlight.
-
(Optional) You can click Cancel at any time if you are not
satisfied with your modifications.
-
If you are satisfied with your modification results in the Video
feed window, click Save.
-
(Optional) Click Reset to default to reset the Sharp to use
the factory default exposure settings.