CCTV Camera Pros Geovision 8.5 Multicam Digital Surveillance System - Manual (Page 217)

Video Analysis
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5. Select Sensitivity. The higher the value, the more sensitive the system is for changes in the
camera view.
6. Specify Tolerance Time of Alarm in seconds that allows any object missing before an alarm
condition is activated.
7. Every time when the system detects changes in the background image, you will be prompted for
alert. You can disable the prompt by selecting Hide Reference Image Setup Dialog.
8. In the Options section, configure these settings:
„ Automatically Disable Alarm: Stops all types of triggered alerts, including sound 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 to avoid false alarms. For
example, light switches can cause illumination changes suddenly. With the option selected,
the system will ignore significant illumination changes and continue monitoring. See the Note
in Crowd Detection earlier in this chapter.
„ Invoke Alarm: Enables the computer alarm when an object is detected to be missing. Click
the […] button next to the option to assign a .wav sound file.
„ Output Module: Enables the output device when an object is detected to be missing. Click
the […] button next to the option to assign an installed output module and a pin number.
„ Never Recycle: With the option selected, the system will not recycle the event files of missing
object detection.
9. You can click Test to test your settings. If the missing object cannot be detected, increase
Sensitivity value to increase system sensitivity to changes in the camera view.
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 any object, which you have outlined the regions for, disappears from the camera view for the
specified time, its location will be highlighted in live video, the selected alarm or output will be activated,
and the event will be recorded as Advanced Missing Object in System Log for later retrieval.