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By default, the entire frame is analyzed. If you want to analyze only a certain area, you must specify one or more areas where detection and metadata generation will be performed.

To do this, do the following:

1. Select a
detection tool
2. detector and click the Image Modified button.
3. In the
Surveillance
4. surveillance window, click the mouse button.
5. Select
Skip
6. Detection area in the list.
7. In the
Surveillance
8. surveillance window, set the anchor points of the area
,
9. within which the detection will be performed.
   Image Modified
   

   Info
   title Note
   Depending on the detector being configured, the area can be either rectangular or polygonal. When you set anchor points, they are connected by a two-color dashed line outlining the border of the area. For convenience of configuration, you can "freeze" the frame. Click the Image Modified button. To cancel the action, click this button again. Once the area is closed,

the 

10. the Image Modified

 buttons

11. buttons are available on its borders between the anchor points. When you click them, a new anchor point is added, allowing you to specify the most precise areas possible. To delete a selected area, click the Image Modified button.

    Action	Result
    Left-click or right-click in the

 Surveillance

12. surveillance window	Creates a new anchor point of the area
    Right-click a created anchor point	Deletes an anchor point of the area
    Hover the mouse cursor over an anchor point and, holding down the left mouse button, move the mouse	Moves an anchor point of the area

13. Specify all required detection areas.

14. Click the Apply Image Modifiedbutton. To cancel the changes, click
the 
15. the Cancel Image Modified button.

Configuration of a detection area is complete. Detection areas are relevant for all sub-tools detectors (except for for Line Crossingcrossing) created on the basis of the parent detection tooldetector.