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Video Analysis
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3
Crowd Detection
Crowd detection is used to generate an alert when a crowd of people gathers in a specified area and
exceeds the defined threshold.
Note: This function is only available when an AVP dongle is used. Up to 16 cameras can be
configured for this application.
1. On the main screen, click the Configure button (No. 14, Figure 1-2), click Advanced Video
Analysis, and select Crowd Detection Setting.
2. Select the desired camera(s) to be configured, and click Configure. This dialog box appears.
Figure 3-37
3. Select a camera from the Camera Selection drop-down list.
4. By default the whole camera view is set to be the alarm region. Click the button to clear the
default setting. Click the
button to freely draw the alarm region. To cancel the previously
drawn area, click the
button.
5. Select Ratio of Changes in the defined alarm region to activate the alarm. The smaller the ratio of
changes, the more sensitive the system is for changes in the camera view.
6. Specify Tolerance Time of Alarm in seconds that allows a crowd to stay before an alarm
condition is activated.