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Cover detection tool detects camera covering. Operation of the detection tool is based on analysis of the broadening of the frame histogram, relative to the histogram median of the reference covering frame (grey).

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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 Cover detection tool, do the following:

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