Perimeter Intrusion - Digital Watchdog DWC-VSTB04Bi User Manual

detection.
• Avoid aiming the camera at environments with plentiful foliage
(trees, bushes, etc.) or with considerable lighting contrast. The
feature works best will plentiful, even scene illumination.
• Cameras should be mounted at a height of 2.8 meters or higher.
• Keep the mounting angle of the camera at about 45°.
• The detected objects should occupy at least 1% of the entire image
and the largest sizes of the detected objects should not be more
than 1/8 of the entire image.
• Cameras should be able to view objects for at least 2 seconds in
the detection area for accurate detection.
•
Adequate light and clear scenery are crucial for line crossing
detection.

5.3.3 Perimeter Intrusion

Perimeter Intrusion: Alarms will be triggered if a tracked target crosses into the
pre-defined areas. This function can apply to important supervised locations,
dangerous areas and prohibited areas.
Go to Setup>Event>Perimeter Intrusion as shown below.
• Enable: Enable to activate the Perimeter Intrusion feature.
•
Alarm Holding Time: Set the alarm holding time. The alarm will
remain active for the duration of the holding time.
•
Trigger SD Card Snapshot: Enable to allow the camera to take a still
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