63
Before Tampering Detection
Tampering Triggered (Camera Moved)
Interval:
The tampering detecting interval. Take the diagram below as example. The interval is
set for 30 second; the camera lens is covered during 10 - 40 sec. At time point B, the camera
compares the view with time point A, and sends an alarm when it founds that the lens is
covered. At time point C, the camera compares the view with time point B, and sends an alarm
when it founds that the lens is uncovered
.