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Note:
Please refer to the
Chapter 9.4 Intrusion Detection
for operating steps to configure the <Object Removal
Detection>.
The
<Threshold>
[5s-20s] in the <Rule Settings> defines the time for which objects are removed from the
region. If you set the value as <10>, then he <Alarm> is triggered after the object disappears from the region
for 10 seconds.
The
<Sensitivity>
defines the similarity degree of the background image. Usually, when the sensitivity is high,
a very small object taken from the region can trigger the alarm.
Up to 4 rules can be configured.
10.9 Audio Exception Detection
The <Audio Exception Detection> function detects the abnormal sounds in the surveillance scene such
as the sudden increase/decrease of the sound intensity and certain actions can be taken when the
alarm is triggered.
Steps:
1.
Enter the <VCA Settings> interface: Menu> Camera> VCA
2.
Select the camera to configure the <VCA>.
You can click the checkbox of <Save VCA Picture> to save the captured pictures of <VCA Detection>.
3.
Select the <VCA Detection> type to <Audio Exception Detection>.
4.
Click
to configure the <Trigger Channel>, the <Arming Schedule> and the <Linkage Actions> for
the <Face Detection Alarm>.
5.
Click the
<Rule Settings> button to set the <Audio Exception Rules>.
Set Audio Exception Detection Rules
1)
Check the checkbox of <Audio Input Exception> to enable the <Audio Loss Detection> function.
2)
Check the checkbox of <Sudden Increase of Sound Intensity Detection> to detect the sound
steep rise in the surveillance scene. You can set the detection sensitivity and threshold for
sound steep rise.
