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Check the Tripwire box to enable tripwire function.
Select SN (Line1/2/3/4) and direction, and then input customized rule name.
Direction: There are three options: A->B, B->A, both. System can generate an alarm once there is
any object crossing in the specified direction.
Now you can draw a rule. Click Draw rule button and then left click mouse to draw a tripwire. The tripwire
can be a direct line, curve or polygon. Right click mouse to complete. See Figure 5-73.
Figure 5-72
Figure 5-73
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