HIKVISION DS-7700NXI-I/S Series User Manual page 117

Line crossing detection detects people, vehicles, and objects crossing a set virtual line. The
detection direction can be set as bidirectional, from left to right or from right to left.
Step 1 Go to System > Event > Smart Event.
Step 2 Click Line Crossing.
Step 3 Select a Camera to configure.
Step 4 Check Enable Line Crossing Detection checkbox.
Step 5 Optionally, check Save VCA Picture to save the captured pictures of line crossing detection.
Step 6 Select Target Detection as Human Body or Vehicle.
 Human Body: Discard non-human body pictures and videos which are not triggered by line
crossing detection.
 Vehicle: Discard non-vehicle pictures and videos which are not triggered by line crossing
detection.
Step 7 Follow the steps to set the line crossing detection rules and detection areas.
1) Select an Arming Region to configure. Up to 4 arming regions are selectable.
2) Select the Direction as A<->B, A->B, or A<-B.
A<->B: Only the arrow on the B side shows. When an object goes across the configured
line with both direction can be detected and alarms are triggered.
Network Video Recorder User Manual
Figure 12-4 Line Crossing Detection
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