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You can set a detection zones and masks zone that are is common to all situation analysis detection tools.

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1. In the Detection Tools list, highlight a Situation analysis  object (1) that offers a means of analyzing the situation in the field of view of the required video camera.
   

2. In the viewing tile (2), set the nodes of the closed area, in order, inside or outside of which you want to delete the detection zone.
   
   

   Info
   title Note
   When the area is being constructed, the nodes are connected by a two-color dotted line which outlines the area's borders

   Action	Result
   Left-click in the viewing tile	Creates a new area node
   Right-click on a line
   Right-click on a created node	Deletes the area node
   Position the cursor on a node and hold down the left mouse button while you move the mouse	Moves the area node
   Click the  button.	Deletes the area

   Note
   title Attention!
   You can set only one enclosed area.

3. As soon as a closed area is set, the  icon bar appears for creating and deleting the detection zone inside or outside the area. To utilize an icon's function, click it with the left mouse button. Red icons let you delete the detection zone
   
   

   Icon	Executed function
   	Deletes the detection zone inside the outlined area
   	Deletes the detection zone outside the outlined area

   After you delete the detection zone, the selected area is visualized in the viewing tile as an area with a dimmed red background.
   

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