Network Video Recorder User Manual
155
Line Crossing Detection
Check
Enable Line Crossing Detection
.
Optionally, check
Save VCA Picture
to save the captured pictures of line crossing detection
pictures.
Follow the steps to set the line crossing detection rules and detection areas.
Select
Arming Area
. Up to 4 arming areas are selectable.
Select the Direction as
A<->B
,
A->B
, or
A<-B
.
A<->B
: Only the arrow on the B side shows. An object crossing a configured line in both
directions can be detected and trigger alarms.
A->B
: Only an object crossing the configured line from the A side to the B side can be
detected.
B->A
: Only an object crossing the configured line from the B side to the A side can be
detected.
Set the detection sensitivity range. The higher the value is, the easier the detection alarm will
be triggered.
Click
Draw Area
and set two points in the preview window to draw a virtual line.
Draw the maximum size/minimum size for targets. Only the targets in the size ranging from
max.size to min. size will trigger line crossing detection.
1)
Click
Max. Size
/
Min. Size
.
2)
Draw an area in preview window.
