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For each type of situation analysis detection tool you must set a virtual element of one of two types:

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Attention! If no visual element is set, the detection tool will not work.
The type of visual element is determined by the detection type. Only the Line crossing detection requires you to set a Line element. Other situation analysis detection tools require you to set an Area element for each detection tool.

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Line

The Line visual element sets a virtual line in the field of view of a video camera; when something crosses this line, it triggers the Line Crossing detection tool.
To set a line, you must perform the following steps:

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1. Click the Apply button.

The line is now set.

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Area

The Area visual element sets an area of a video camera's field of view, in which the situation is analyzed by a detection tool of the selected type.
To set an area, you must perform the following steps:

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