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This detection tool reacts to changes in the scene background due to physical tampering of the CCTV camera. Operation of the detection tool is based on calculation of the standard deviation of integral frame intensity from its mean value.
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The detection is performed by key frames. If detection tool configuration process described below does not result in a proper detection quality, i.e. the detection tool does not trigger or triggers with a delay, it is recommended to reduce key frame rate for video camera (see Configuring video compression) or video analytics stream if the camera has multiple streams (see Configuration of multistream video). |
To configure Background change detection tool, do the following:
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