User Manual

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 Skip Instant Light Change: Ignores sudden illumination changes to minimize false alarms.
For example, light switches can cause illumination changes suddenly. With the option
selected, the system will ignore significant illumination changes without triggering the alarm
and continue monitoring. See the Note below for possible risk.
 Invoke Alarm: Enables the computer alarm when an assemblage is detected. Click the […]
button next to the option to assign a .wav sound file.
 Output Module: Activates the output device when a crowd is detected. Select this option and
use the drop-down list to assign an installed output module and a pin number.
 Never Recycle: Prevents the system from recycling the event files of crowd detection when
the recycle threshold is reached.
9. You can click Test to test your settings. When an assemblage is detected in the camera view, a
flashing box will appear on its location for warning. If an assemblage cannot be detected, decrease
Ratio of Changes to increase the system sensitivity for detection.
10. Click OK to apply the settings.
11. Start monitoring to run the application.
When a crowd of people gathers in the alarm region for the specified time, its location will be
highlighted on live view, the selected alarm or output will be activated, and the event will be recorded
as Crowd Detection in System Log for later retrieval.
Note:
1. For the Skip Instant Light Change option:
• When the option is selected, you may be subject to the risk that the system will not generate
an alert whenever the lens of the camera is covered by malice.
• This option is not recommended for infrared cameras.
2. Optionally create a schedule for crowd detection to be enabled at certain times only. For details,
see Creating Schedules in Chapter 1.
To manually stop all triggered alerts, click the Tools button
on the triggered channel, select
Reset Alert and select Crowd Detection.
 Reset Alert: Disables and resets the triggered alert. After the alert is reset if the crowd remains
gathering over the specified tolerance time, the system will still detect it as a crowd gathering and
keep generating alert.