NVR User Manual 061220NA
108
4.
Set the
VCA
detection type to
Line Crossing Detection
.
5.
Check the
Enable
checkbox to enable this function.
6.
Click
to configure the trigger channel, arming schedule, and linkage actions for the
line crossing
detection
alarm.
7.
Click the
Rule Settings
button to set the
line crossing detection
rules.
1)
Set the direction to
A<->B
,
A->B
, or
A<-B
.
•
A<->B
: Only the arrow on the B side shows; an object going across the configured line in either
direction will be detected and trigger an alarm.
•
A->B
: Only an object crossing the configured line from the A side to the B side will be detected.
•
B->A
: Only an object crossing the configured line from the B side to the A side will be detected.
2)
Click-and-drag the slider to set the detection sensitivity.
•
Sensitivity:
Range [1
−
100]. The higher the value, the more easily the detection alarm can be
triggered.
3)
Click
OK
to save the rule settings and go back to the
line crossing detection
settings interface.
Figure 155, Set
Line Crossing Detection
Rules
8.
Click
and set two points in the preview window to draw a virtual line.
9.
(Optional) Use the
to clear the existing virtual line and re-draw it.
NOTE:
Up to four rules can be configured.
