Line crossing, Act i ivs server 1 user’s manual – ACTi IVS Server 1 V2.02.06 User Manual
Page 27
ACT
i IVS Server 1 User’s Manual
Minimum Width
Depending on the distance between your camera
device and the ground, the perceived size of objects will
change (For example: the farther the device is, the
smaller the object will appear).
MinWidth
allows the
user to determine the minimum width (1-80 pixels) of
the
Object Size Reference Frame
(found in the bottom
left corner of the
Live View Display
) used for the
calculation of an object. Any moving object whose width
is smaller than this value will be treated as
non-relevant.
16
Line Crossing
In certain scenarios, you might want to know when people enter a certain restricted area, or
when people pass beyond a certain point that you may deem them suspicious. To take care of
this,
ACTi IVS Server
provides a
Line Crossing
algorithm, which can provide you with the
ability to draw a virtual line on any part of your camera view, and keep an eye anyone in your
camera view that crosses or touches that line. Not that the lines marked for
Line Crossing
algorithm will be shown in blue.
To set up your
Line Crossing
algorithm, follow the steps below:
1.
On the
Smart Search
tab of your
New Analysis Window
, select the
“Line Crossing”
button .
2.
Under the
Line Crossing Properties
that appears on your screen, check the box for
“Enable”
to allow for the
Line Crossing
algorithm to work.
3.
Move your cursor over to the area showing video stream. Once over the area, your
cursor will appear as a drawing pen. Draw the blue line that will be used to detect
suspicious activity by dragging your cursor from a starting point to an end point.
4.
To re-draw the line,
right-click
on the line and select
“remove”
to remove the existing
line, and re-draw.
5.
If you would like to record all moving objects on your camera view while running the
analysis, mark the box for
“Record Moving Object”
.
6.
Click
“Start Smart Search”
to start running your analysis.