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The Perspective configuration enhances detection tools the performance and helps evaluate real sizes of the detectors and allows you to estimate the real size of objects based on a simplified calibration system.

To configure the perspective, do the following:

1. Select the Object tracker

object.

2. .

3. In the settings of the Object tracker (see Configuring the Object tracker):
   1. Select the Yes
in
4. 1. value for the Object calibration
option (1).
Image Removed
5. 1. parameter.
   2. In
the 
6. 1. the Leveling rod height
field (2)
7. 1. parameter, enter the
height
8. 1.  height of the calibration object on the video image in decimeters.
Click
9. In the preview window, click the Image Modified button
in the preview window
10. .
Set
11. Visually specify the size of the same object in different
areas
12. parts of the
field of view
13. frame:

    • To create a

calibration

14. • leveling rod, add two anchor points by left-clicking

on

15. • the video image. 

    • Set at least three

calibration rods which

16. • leveling rods. The lower anchor points of any three rods must not be located on the same line (horizontal, vertical, slanting, and so on).

    • You can resize the rod by stretching its anchor

points 

17. • points Image Modified, and move it on screen using drag-and-drop.

    • Rods must be exactly the same size as the object, which serves as a template for a leveling rod. For example, a person's height can serve as a template:
      Image Modified

      Note
      title Attention!

Meet

18. • When you configure leveling rods, the following requirements

when configuring the calibration rods

19. • must be met: rods

should

20. • must be evenly distributed throughout the frame: the larger

the

21. • 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

22. • floor)

;a rod should be exactly the same size as the object, which serves as a template for the calibration rod

23. • ; in complex scenes,

it is recommended to add

24. • we recommend adding more than three rods, but no more than 10-15 rods per frame.

      Info
      title Note
      For

your

25. • convenience of configuration, you can

click the Image Removed button to

26. • "freeze" the

video

27. • frame

and configure the perspective on a still snapshot. To undo

28. • . Click the Image Added button. To cancel the action, click this button again. To delete

the calibration

29. • a rod, click

the 

30. • the Image Modified button.

31. Click the Apply button Image Added. To cancel the changes, click the Cancel Image Added button.

Perspective is now configured.

...

These settings will apply for all

...

sub-detectors of the Object tracker.