2.2.8.4 Tampering
The Tampering setting can be found under this path: System> Events>
Tampering. This feature is available only for select models.
Tampering Alarm function helps the IP camera against tampering, such as
deliberate redirection, blocking, paint spray, and lens cover, etc., through video
analysis and reaction to such events by sending out notifications or uploading
snapshots to the specified destination(s).
Detection of camera tampering is achieved by measuring the differences
between the older frames of video (which are stored in buffers) and more recent
frames.
Tampering Alarm
The default setting for the Tampering Alarm function is <Off>. Enable the
function by selecting <On>. Users can also activate the function according to
the schedule previously set in the <Schedule> setting page. Select <By
schedule> and click <Please select…> to choose the desired schedule from the
drop-down menu.
Tampering Duration
Minimum Tampering Duration is the time for video analysis to determine
whether camera tampering has occurred. Minimum Duration could also be
interpreted as defining the Tampering threshold; longer duration represents
higher threshold. Settable Tampering Duration time range is from 10 to 3600
sec. The Default value is 20 sec.
Triggered Action
The administrator can specify alarm actions that will take when tampering is
detected. All options are listed as follows.
Enable Alarm Output (high/low)
Check the item and select the predefined type of alarm output to enable
alarm output when tampering is detected.
Send Message by FTP/E-Mail
The administrator can select whether to send an alarm message by FTP
and/or E-mail when tampering is detected.
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