Network Video Recorder User Manual
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Step 3 Select a Camera to configure.
Step 4 Check Enable Object Removable Detection.
Step 5 Optionally, check Save VCA Picture to save the captured pictures of object removable
detection.
Step 6 Follow the steps to set the detection rules and detection areas.
16) Select an Arming Region to configure. Up to 4 regions are selectable.
17) Drag the sliders to set Time Threshold and Sensitivity.
Time Threshold: The time of the objects removed from the region. If the value is 10,
alarm is triggered after the object disappeared from the region for 10s. Its range is
[5s-20s].
Sensitivity: 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.
18) Click Draw Region and draw a quadrilateral in the preview window by specifying four
vertexes of the detection region.
Step 7 Set the arming schedule. Refer to Chapter 11.1 Configure Arming Schedule.
Step 8 Set the linkage actions. Refer to Chapter 11.2 Configure Alarm Linkage Actions.
Step 9 Click Apply.
12.9 Audio Exception Detection
Purpose:
Audio exception detection detects the abnormal sounds in the surveillance scene, such as the
sudden increase/decrease of the sound intensity.
Step 1 Go to System > Event > Smart Event.
Step 2 Click Audio Exception.
Figure 12-10 Audio Exception Detection
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