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92
en | Setting up VCA
Scene too noisy
Activate this function if tampering associated with EMC
interference (noisy scene as the result of a strong interference
signal in the vicinity of the video lines) should trigger an alarm.
Reference check
Save a reference image that can be continuously compared with
the current video image. If the current video image in the
marked areas differs from the reference image, an alarm is
triggered. This detects tampering that would otherwise not be
detected, for example, if the camera is turned.
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Disappearing edges
The area selected in the reference image should contain a
prominent structure. If this structure is concealed or moved,
the reference check triggers an alarm. If the selected area is too
homogenous, so that concealing and moving the structure
would not trigger an alarm, then an alarm is triggered
immediately to indicate the inadequate reference image.
Appearing edges
Select this option if the selected area of the reference image
includes a largely homogenous surface. If structures appear in
this area, then an alarm is triggered.
Selecting the area
Select the image areas in the reference image that are to be
monitored. The video image is subdivided into square fields.
Activate or deactivate each of these fields individually.
AM18-Q0635 | v5.6 | 2013.01
Click Reference to save the currently visible video- image
as a reference.
Click Select Area and select the areas in the reference
image that are to be monitored.
Check the box Reference check to activate the on-going
check. The stored reference image is displayed in black
and white below the current video image, and the selected
areas are marked in yellow.
Select the Disappearing edges or Appearing edges option
to specify the reference check once again.
Software manual
Camera Browser Interface
Bosch Security Systems
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