Operation Manual

IVA 4.0 IVA 4.0 Flow | en 57
Bosch Security Systems Operating Manual DOC | 4.0 | 2009.06
Click Reset to begin building statistics again.
5.6 Configuration
This tab provides access to basic settings that you should specify before defining the
individual tasks.
The settings and values defined here are valid for all tasks.
5.6.1 Sensitivity Settings
Sensitive Area
The sensitive area is that part of the image seen by the camera that is analyzed. Objects
moving outside the sensitive area cannot generate an alarm event even if they are caught by
the camera.
For more details, refer to: Section 4.7.3 Sensitive Area, page 46.
Tracking Parameter
Define the following parameters to further define movement detection:
– Tracking sensitivity
Set a value with the slide control.
Max.: Even minor activities are detected as a flow. This setting is useful if the camera has
a small tilt angle and in environments in which objects are often hidden.
However, this setting may mean that camera noises (especially in low-visibility
conditions) are also detected as movements.
Min.: This setting is useful in simple environments in which objects move in a straight line
and are not hidden during their movement through the area concerned.
– Min. tracking duration [s]
Enter a value between 1 and 4 seconds.
A movement must span this period for it to be detected as a flow.
Activate this option if slow movements are also to be detected.
– Min. tracking distance
The value indicates the distance the objects generating the movement have to cover for a
flow to be detected. Small values will trigger an alarm event for slight movements.
Activate this option if quick movements are also meant to be detected as a flow.
At least one of the last two options must be activated at all times for a flow to be detected.
High encoding power may require a longer tracking duration.
For more details, refer to: Section Flow Detection Notes and Limitations, page 49.
Green:
set of flows with no alarm
Red:
set of flows with alarm