Dahua N82B3P

User's Manual
156
Figure 5-124 Crowd gathering
2) Click to draw the minimum size or maximum size to filter the target.
The system triggers an alarm only when the size of detected target is between
the maximum size and the minimum size.
3) Set parameters.
Table 5-33 Crowd gathering parameters
Parameter
Description
Preset
Select a preset you want to use IVS.
Name
Customize the rule name.
Duration
Set how long the object stays until the alarm is triggered.
Sensitivity
You can set alarm sensitivity. The higher the value, the easier to
detect crowd gathering but meanwhile the higher false alarm rate.
4) Click OK.
Step 6 Configure alarm schedule and linkage.