3xLOGIC VIGIL Server - Manual (Page 91)

People Counting Multiple Tripwire
The People Counting Multiple Tripwire Rule counts the number of people entering and/or exiting an area based on two tripwire lines
drawn across the field of view of the camera. To be counted by this rule, the pedestrian must cross both tripwire lines. This allows
for flexibility in areas where there may be some traffic moving through the area that should not count towards the rule, however
with two tripwires for the traffic to cross, the possible points of failure are doubled. This is usually countered by the increased accu-
racy gained by filtering out the traffic that is not supposed to be counted by the rule.
In this example, the employee at the desk can move around without crossing both tripwires and creating a false positive, and traffic
entering through the door will be counted.
The People Counting Multiple Tripwire Rule configuration is the same as the People Counting Single Tripwire Rule. The only dif-
ference is the Wire Settings Tab.
Wire Settings Tab
Click on the image to draw the first tripwire threshold where objects will be counted. Select Exit Line and then click on the image to
draw the second tripwire threshold where objects will be counted. There must be enough space on either side of the tripwire to
detect object movement and identify the object type.
Add Click the Add button and then click to draw the tripwire.
Enter
Line /
Exit Line
Select Enter Line and click on the image to draw the first
tripwire then select Exit Line and click on the image to
draw the second tripwire.
Edit
Click the Edit button and then click and drag the points
of the tripwire.
Clear
Click Clear to remove all tripwire settings from the
image.
Flip
Flips the direction of the tripwires, so that Enter and Exit
are switched.
Freeze
Video
Click the Freeze Video button to pause the live video.
Click the button again to display live video.
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