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1. Go to the VMDA detection object settings panel.
   
2. Click the Add area button (1).
3. In the  the Video preview field (3), set the nodal points of the area one by one by clicking the left mouse button. Only one area can be added. If there is an attempt to add a second area, the first one will be deleted.
   

4. Make the necessary operations with an area. The operations are shown in the table.:

   Operation	Result
   Left mouse click in the video surveillance window	Area’s nodal point addition
   Hover to a nodal point and holding the left button pressed move the mouse	Area’s nodal point shift
   Hover to a nodal point and press right mouse button	Line deletion. If there are three nodal points the whole area will be deleted

   
   

5. To select an object type for which the detector will trigger, click the  symbol. Available object types are:

   1.  Any object. Detector triggers on any object.
   2.  A human. Detector triggers on an object which width is less than height.

   3.  A vehicle. Detector triggers on an object which width is greater than height.

      
      

      Info
      title Note.
      Detection of the following object types can be configured using scripts and registry keys: a human, a group of humans (with a possibility to count the number of people in a group), a vehicle, noise, an object carried into the area, an object carried out of the area, other objects. See also also CAM_VMDA_DETECTOR section of the Programming Guide. More precise objects classification can be performed using the neural filter (see Configuring the neural filter).

      
      

6. To select a detector type, click the  symbol symbol. Available detector types are given below.:

   1.  Any Any movement in the area. Detector triggers due to any motion in the area.

   2.  Entering Entering the area. Detector triggers due to object’s entrance into the area.

   3.  Exiting Exiting the area. Detector triggers due to the exit of object from the area.

   4.  Appearance Appearance in the area. Detector triggers due to the object’s appearance in the area.

   5.  Disappearance Disappearance in the area. Detector triggers due to the object’s disappearance from the area.

   6.  Stop Stop in the area. Detector triggers due to the object’s stop in the area.

   7. Staying in the area for more than 10 sec (i.e. loitering detection). Detector triggers due to the object’s presence in the area for more than 10 sec. This period can be configured with LongInZoneTimeout registry key (see Registry keys reference guide).

   8.  An An abandoned object. Detector triggers due to the item abandoned in the area.

7. To set the object color to be triggered by the detector, click the  icon. The color picker palette will open. Circle the required color range with the left mouse button.
   

   To reset the selected color range to the default value, right-click in the palette area.

8. Set the Generate alarm on camera checkbox (4), if the camera alarm should be generated when the detector triggers.
9. To display the tracks of objects detected by the cross line detection tool regardless of whether the corresponding setting of the Tracker object is enabled, set the Show event on screen checkbox (5).
   
10. If the video in the preview window is too distorted, set the Show actual video aspect ratio checkbox (6). In this case, the video may not occupy the entire area of the preview window.
11. To save the changes, click the Apply button (7).

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