3xLOGIC VIGIL Server - Manual (Page 112)

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 accuracy 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 difference 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.
3xLOGIC's VIGIL Server 7.1 User Guide
Pg. 108