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The Perspective enhances detection tools performance and helps evaluate real sizes of objects based on simplified calibration system.

To configure the perspective, do the following:

1. Select the Object tracker object and click the Image Removed button object.

2. Select Yes in the Object calibration option (1).
   Image Added

3. In the Leveling rod height field (2), enter the height of the calibration object on the video image in decimeters.

4. Click the Image Added button in the preview window.
5. Set the size of the same object in different areas of the field of view. :

   1. To create a calibration

   length

   1. rod, add two anchor points by left-

   click within

   1. clicking on the video image

   in the viewing tile and add two anchor points.

   1. . 

   2. Set at least three calibration

   lengths.

   1. rods which must not be located on the same line.

   2. You can resize the

   length

   1. rod by stretching its anchor

   points Image Removed. You can

   1. points Image Added, and move it on screen

   by dragging and dropping.
   Image Removed

   1. using drag-and-drop.
      Image Added

      Note
      title Attention!
      Meet the following requirements when configuring the calibration rods: rods should be evenly distributed throughout the frame: the larger the area they cover, the more accurate the calibration; rods that are equally distant from the camera lens must be the same size; all bases of the rods must be on the same plane (for example, the floor); a rod should be exactly the same size as the object, which serves as a template for the calibration rod; in complex scenes, it is recommended to add more than three rods, but no more than 10-15 rods per frame.

      Info
      title Note

    For

   1. For your convenience, you can click

   the

   1. the Image Modified button to freeze the video frame and configure the

   mask

   1. perspective on a still

   frame/

   1. snapshot. To undo, click this button again.

   Info

   title	Note

   1. To delete

   it

   1. the calibration rod, click

   the Image Removed button.

6. Select Yes in the Object calibration option (1).
   Image Removed

7. Enter the height in decimeters of the object you want to find in the Leveling rod height field (2).

   Note

   title	Attention!

   Objects smaller than the specified value will not be detected

   1. the Image Added button.

      
      

8. Click the Apply button.

Perspective is now configured.

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