eLine Technology ETV_v7 - Manual (Page 82)

ETV System Server Software - User’s Guide Page 82
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.
Select Enter Line and click on the
Enter Line
/ Exit Line
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.