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![](https://files.manualsfile.com/6847182-gv-pbl8800/bg5d.png)
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8.4.2.5 Line Crossing
Line Crossing detection is designed to work in most indoor and outdoor environment. An
event will be triggered every time when the camera detects objects crossing a defined
virtual line.
Settings steps are shown as follows:
[Detection Settings]
Step 1: Draw the detection line, enable line crossing detection, and define its direction;
Note: Allows to set up to four lines at a time. There are three direction modes to choose for
triggering alarm. “A→B” means when there is any object crossing the line from the “A” side to
the “B” side, the alarm will be triggered. “B→A” vice versa. “A ↔ B” means that the alarm will
be triggered when objects cross line from either side.
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