• Area: This parameter controls
how many pixels
in the VM window need
to change before the software triggers a VM event. The smaller the value,
the higher the sensitivity, as fewer changing pixels will trigger an event.
The trigger value set by this parameter is displayed as a vertical white
line.
If this parameter has a very small value (e.g.
2
), even the smallest of
change in a video motion window will prompt an event, which in turn
may lead to a higher rate of false alarms.
Note: Change this parameter only if you have already set the size of the
video motion window. Changing the size of the video motion window usu-
ally requires changing the
area
parameter as well.
• Max. area: This parameter sets the percentage value of the
maximum
number of pixels
, which may change in the VM window. If this value is
exceeded, the camera will
not
trigger an event. This parameter is optional
and will not be added when creating a new video motion window. The
trigger value set by this parameter is also displayed as a vertical white
line, provided the value is higher than the
area
value.
Caution: A low value will prevent event detection if the camera software
detects a large number of changing pixels in the video motion window.
Use this parameter to identify smaller objects (e.g. pedestrians) while
ignoring larger objects (e.g. trucks).
Note: Change this parameter only if you have already set the size of the
video motion window. Changing the size of the video motion window usu-
ally requires changing the
max. area
parameter as well. Make sure that
this parameter always has a higher value than the
area
parameter.
© MOBOTIX AG • Security-Vision-Systems • Made in Germany
www.mobotix.com • sales@mobotix.com • 10.10.2006
163/288
Software Camera Manual Part 2
Percentage of the pixels
in the video motion win-
dow that needs to change
in order to trigger an
event
If this value is exceeded,
the camera will not trig-
ger an event!
Entering comments
Temporarily deactivating
video motion windows
Hint
Entering the hash sign (#) allows adding comments in the Video
Motion Definitions (VM) field:
# VM window top left
0,358,456,384,110,20,25
Likewise, you can also use the hash sign to temporarily deactivate a
window definition:
# VM window top left, deactivated
# 0,358,456,384,110,20,25
To Next Page
Loading...
