Setting Up Vca; Vca - Silent Vca; Vca - Profiles - Sony SNC-HMX70 User Manual

Setting up VCA

Several VCA configurations are available.
– Off
– Silent VCA
– Profile #1
– Profile #2
– Scheduled
– Event triggered

VCA - Silent VCA

In this configuration, metadata is created to facilitate
searches of recordings, however, no alarm is triggered.
• In the VCA configuration drop-down list, select
Silent VCA.
No parameters can be changed for this selection.

VCA - Profiles

Two profiles can be set up with different VCA
configurations
1
In the VCA configuration drop-down list, select
profile 1 or 2 and enter the required settings.
2
If necessary, click Default to return all settings to
default values.
To rename a profile:
1
To rename the file, click the icon to the right of the
list field and enter the new profile name in the field.
2
Click the icon again. The new profile name is saved.
The current alarm status is displayed for information
purposes.
Aggregation time [s]
Set an aggregation time of between 0 and 20 seconds.
The aggregation time always starts when an alarm event
occurs. It extends the alarm event by the value set. This
prevents alarm events that occur in quick succession
from triggering several alarms and successive events in
a rapid sequence. No further alarm is triggered during
the aggregation time.
The post-alarm time set for alarm recordings only starts
once the aggregation time has expired.
Analysis type
Select the required analysis algorithm. Motion+ offers a
motion detector and essential recognition of tampering.
Metadata is always created for a video content analysis,
unless this is explicitly excluded. Depending on the
analysis type selected and the relevant configuration,
additional information overlays the video image in the
preview window next to the parameter settings. With the
Motion+ analysis type, for example, the sensor fields in
which motion is recorded are marked with rectangles.
Note
For suitable devices, additional analysis algorithms with
comprehensive functions, such as IVMD and IVA, are
also available. Refer to the IVA documentation for more
information on using these.
Tamper detection
Detect tampering of cameras and video cables by means
of various options. Run a series of tests at different times
of the day and night to ensure that the video sensor is
operating as intended.
Sensitivity and Trigger delay [s] can only be changed
if Reference check is selected.
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.
1
Click Reference to save the currently visible video-
image as a reference.
2
Click Select Area and select the areas in the
reference image that are to be monitored.
3
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.
4
Select the Disappearing edges or Appearing
edges option to specify the reference check once
again.
Sensitivity
The basic sensitivity of the tamper detection can be
adjusted for the environmental conditions to which the
camera is subject.
The algorithm reacts to the differences between the
reference image and the current video image. The darker
the observation area, the higher the value that must be
selected.
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