NETAVIS Observer 4.6 User Manual (October 2015)
Page 157 of 204
6.
Adapt the
Alarm time limit (sec)
option which defines after how many second the
corresponding event is triggered.
Hint
: It is possible to set up more than one Stopped Vehicle Detection per camera, e.g. to generate
different events for vehicles stopped on the main road or the emergency lane.
15.3.13 Defining Wrong Way Detection
NETAVIS Observer 4.5 introduced iCAT Traffic and with it Wrong Way Detection. It detects vehicles
going into the wrong direction on a normal road or special segments such as an emergency or exit
lane.
Here are the steps for configuring Wrong Way Detection:
1.
Choose
Video analysis (iCAT)
from the
System administration
menu. This opens the
Video
analysis (iCAT)
dialog.
2.
Select a camera in the camera tree and in the menu select
Add new definition
.
3.
In the
Type
pop-up menu choose
Wrong Way Detection
which exposes the configuration
settings.
4.
In the
Identifier
text field enter a name for this Wrong Way Detection.
5.
Draw the region you want to monitor in the preview pane. Just click with the mouse to define the
corners of the polygon and close it by crossing an existing edge or by double clicking with the
mouse:
6.
Next the detector learns the typical direction of the traffic inside the previously defined region.
Depending on the amount of traffic the duration for this learning process can range from a
couple of hours to a day. When the learning process is completed every vehicle going into a
