Tamper Detection

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IVS features Tamper Detection to detect camera the tampering events such as blockage, de-focusing, redirecting, spray-painting and so on. Tamper Detection relies on detecting large persistent changes in the video image.

 

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Setting

Description

Default

Enable Tamper Detection

Enables Tamper Detection.

Deselected
(Disabled)

Tampered Duration until Alarm

Sets how long does the video image persistently change to trigger tamper alarm.

20 secs

Tampered Screen Area

Sets how much does the video image change to trigger tamper alarm.

40 %

Suppress alarm on lights on/off

Rules out the scenarios of great and rapid image lighting change such as on/off indoor lighting, which often cause false tamper alarms.

This function is performed sacrificing the sensitivity to trigger alarms and thus isn’t recommended if fast lighting changes isn’t much a problem in your installation.

Deselected
(Disabled)