34
Step 3
Click “Save” to complete the parameter config of camera exposure.
5.1.1.3
Backlight
Backlight mode can be divided into BLC, WDR and HLS.
BLC: it can avoid cucoloris phenomenon of the darker area in the backlight environment.
WDR: It can suppress the overbright area and compensate darker area by enabling WDR, which can
make the overall image clear.
HLC: It is to weaken the high light, which can be applied in the areas such as toll gate, entrance and exit
of the parking lot and etc. As for extreme light, it can snapshot the human face in the dark environment
and it can realize better effect for the details of the plate number.
Step 1
Select “Setup > Camera > Condition > Backlight”, the system will display the interface of “Backlight”
which is shown in Figure 5-3.
Figure 5-3
Step 2
Set the backlight parameter.
When the “Mode” is set as “Scene Self-adaptation”, the system will auto adjust the image
brightness according to the environmental brightness, which is to make the object display clearly in
the scene.
When the “Mode” is set as “BLC”, it can select default mode or customized mode.
When selecting “Default” mode, the system can realize auto exposure according to the
environment, which is to make the image in the darkest area clear to be seen.
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