Vivotek NR9682-v2 64-Channel NVR (No HDD) - Manual (Page 159)

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User's Manual - 159
Line Crossing Detection
The Line Crossing detection detects one or multiple persons crossing a virtual trip-wire. The
traffic direction can be assigned on screen for persons passing the line in one specific direction
or in both directions.
Out
In
Detection line
The applicable scenarios of this feature can be:
* Detects someone who enters a drive way, entrance, or exit through the virtual line.
* Detects and triggers an alarm in a predetermined direction.
* The detection line can be used as a fence boundary to know if someone has crossed the
articulated line around a perimeter.
Below are short description for the Line Crossing, Loitering, and Intrusion detection functionality: