User Manual

Network Video Recorder User Manual
64
Figure 5-9 Object Removal Detection
4. Check Enable Object Removable Detection.
5. Optional: Check Save VCA Picture to save the captured object removable detection pictures.
6. Follow these steps to set the detection rules and detection areas.
1) Select Arming Region. Up to 4 regions are selectable.
2) 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 will be triggered
after the object disappears from the region for 10s. Its range is [5s-20s].
Sensitivity
The similarity degree of the background image. If the sensitivity is high, a very small object
taken from the region will trigger the alarm.
3) Click Draw Area and draw a quadrilateral in the preview window by specifying four vertices of
the detection region.
7. Set the arming schedule. Refer to Configure Arming Schedule.
8. Set the linkage actions. Refer to Configure Linkage Actions.
9. Click Apply.
5.2.8 Audio Exception Detection
Audio exception detection detects abnormal sounds in the surveillance scene, such as a sudden
increase/decrease in sound intensity.
Steps
1. Go to Smart Analysis → Smart Event Settings → Other Events.
2. Select a camera.
3. Click Audio Exception.