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4.2.1.10
Object Left Behind Detection
Object left behind detection detects objects left behind in a user-specified area for a preset
time. The NVR takes snapshots and reports an alarm when the detection rule is triggered.
1. Go to Menu > VCA > VCA Config.
2. Select a camera.
3. Select Object Left Behind and click
4. Set detection rules. The 4 detection rules shall be set separately. The following takes Rule
1 as an example.
Parameter
Description
Detection
Select Rule 1, click
Area
preview window.
Click on the image and drag to draw a line. Repeat the action to draw
more lines to form an enclosed shape as needed. Up to 6 lines are
allowed.
Note: For a rule in Drawn state, you can click
delete a detection area, click
Sensitivity
Set the sensitivity by dragging the slider.
The higher the sensitivity, the more likely object removal behaviors will
be detected, but the false alarm rate will increase.
Time
Set the time threshold by dragging the slider.
Threshold(s)
If an object is removed from the detection area for the set time, an
alarm will be triggered.
5. Set the alarm-triggered actions and arming schedule. See 4.7.5.1 Alarm-triggered Actions
and Arming Schedule for details.
6. Click Apply
to configure it.
, and then draw a detection area in the left
.
67
UNIGUARD 4 & 8 HDD Series
to redraw a detection area. To
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