CCTV Camera Pros Geovision 8.5 Multicam Digital Surveillance System - Manual (Page 208)

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7. Every time when the system detects changes in the background image, you will be prompted for
alert. If you want to close the prompt, select Hide Reference Image Setup Dialog.
8. In the Options section, you can optionally configure these settings:
„ Automatically Disable Alarm: Stops all types of triggered alerts, including computer alarm,
flashing boxes and output module after the specified duration. Disabling the alerts will not
disable alert settings and the detection in progress.
„ Embed Alarm Region into Recorded Video: This option will contain the flashing alert boxes
in the recorded files so that you can easily spot suspicious events during playback. Note that if
you are used to searching suspicious events with Object Search, do not enable this option.
These flashing boxes can cause false alarms.
„ Skip Instant Light Change: Ignores sudden illumination changes and avoids 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 an assemblage is detected. Click the […]
button next to the option to assign an installed output module and a pin number.
„ Never Recycle: Enables the system not to recycle the event files of crowd detection.
9. You can click Test to test your settings. If an assemblage cannot be detected, decrease Ratio of
Changes to increase the system sensitivity for detection.
10. To activate the function at certain times only, click the Schedule button and select Active
Schedule. For details, see Video Analysis Schedule later in this chapter.
11. Click OK to apply the settings.
12. 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 video, the selected alarm or output will be activated, and the event will be recorded
as Crowd Detection in System Log for later retrieval.