NVR User Manual 061220NA 109
Figure 156, Draw Line for Line Crossing Detection
10. Click Apply to activate the settings.
9.3 Intrusion Detection
Purpose
Intrusion detection detects people, vehicles, or other objects that enter and loiter in a pre-defined virtual
region, and certain actions can be taken when the alarm is triggered.
1. Enter the VCA settings interface, Menu > Camera > VCA.
2. Select the camera for which to configure the VCA.
3
. (Optional) Click the Save VCA Picture checkbox to save the captured VCA detection pictures.
4. Set the VCA detection type to Intrusion Detection.
5. Check the Enable checkbox to enable this function.
6. Click to configure the trigger channel, arming schedule and linkage actions for the line crossing
detection alarm.
7. Click the Rule Settings button to set the intrusion detection rules. Set the following parameters.
1) Threshold: Range [1s−10s], the threshold for the time of the object loitering in the region. When
the duration of the object in the defined detection area is longer than the set time, the alarm will
be triggered.
2) Click-and-drag the slider to set the detection sensitivity.
• S
ensitivity: Range [1−100]. The value of the sensitivity defines the size of the object that will
trigger the alarm. The higher the value, the more easily the detection alarm can be triggered.
• Percentage: Range [1−100]. Percentage defines the ratio of the in-region part of the object that
will trigger the alarm. For example, if the percentage is set as 50%, when the object enters the
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