Dahua NVR21-4 KS2 Series, Руководство пользователя

Страница: 213 / 361

Local Basic Operation 202
Table 4-36
Parameter Description
Preset Set the preset point for IVS detection according to the actual needs.
Name Customize the rule name.
Duration Set the minimum time that the object stays until the alarm is triggered.
Filter target
Click to filter the target. Check the blue wireframe and adjust the size of
the area with the mouse.
Each rule can set 2 target filters (maximum size and minimum size), that is,
when the passing target is smaller than the minimum target or larger than the
maximum target, no alarm will be generated. The maximum size should not
be smaller than the minimum size.
3) Draw a rule. Left click mouse to draw a zone, until you draw a rectangle, you can
right click mouse.
4) Click OK to complete the rule setting.
Step 3 Click , you can refer to the "4.7.2.4.1 Tripwire" to set other parameters.
Step 4 Click Apply to complete the setup.
4.7.2.4.8
Loitering Detection
System can generate an alarm once the object is staying in the specified zone longer than the
threshold.
Step 1 In the Type drop-down list, select Loitering Detection .
The interface is shown as below. See Figure 4-144.