Digital Video Recorder User Manual 
 
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Figure 10-5 Set Line Crossing Detection Rules 
Step 7 Click    and set two points in the preview window to draw a virtual line.   
You can use the    to clear the existing virtual line and re-draw it.   
   
Up to 4 rules can be configured.   
 
Figure 10-6 Draw Line for Line Crossing Detection   
Step 8 Click Apply to activate the settings.     
   
The sudden scene change detection and the line crossing detection cannot be enabled at the same 
channel. 
10.4  Intrusion Detection   
Purpose 
Intrusion detection function detects people, vehicle or other objects which enter and loiter in a 
pre-defined virtual region, and some certain actions can be taken when the alarm is triggered.