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Table of Contents


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Configuring the parameters

Note
titleAttention!

When a recumbent person is facing a camera or away from a camera, the correct operation of the detector isn't guaranteed.

To create the Person down detector, do the following:

  1. Create the Human pose detector (see Configuring the Human pose detector).
  2. Below the Human pose detector, click Create… → Person down detector.

By default, the Person down detector generates an event if a recumbent person is detected in the specified area.

If necessary, you can change the detector parameters. The list of parameters is given in the table:

ParameterValueDescription
Other
EnableYesThe detector is enabled by default. To disable the detector, select the No value
No
NamePerson down detectorEnter the detector name or leave the default name
TypePerson down detectorName of the detector type (non-editable field)
Basic settings
Number of measurements in a row to trigger detection2Specify the minimum number of frames with the corresponding pose or behavior for the detector to generate an event. The value must be in the range [1, 20].
The recommended (default) value is 2.
Increasing the value can help eliminate false events, but increases the risk of skips. 
Decreasing the value can help reduce skips, but increases the probability of false events

To save the parameters of the detector, click the Apply Image Added button. To cancel the changes, click the Cancel Image Added button.

Configuring the frame perspective 

For the Person down detector operation, you must

Tip

Setting up common parameters for Pose detection tools

To detect a recumbent pose, you should configure the frame perspective first. 

To do For this, do the following:

  1. In the preview window, click the Image Added button.
  2. Specify
  3. Select a detection tool, and click the Image Removed button in the preview window.
    4. Set
  4. the size of the same person in different
    5. areas
  5. parts of the
    6. FOV.
  6. frame by eye:
    • To create a leveling rod, left-click
    7. on
    • the video image to add two anchor points.
    8. You should set

    • Set at least

    9. three leveling rods.

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

    • The size of the leveling rod
    10. should
    • must be about the average height of a person at this
    11. point in
    • part of the frame.
    • You can resize the rod by stretching its anchor
    12. points Image Removed
    • points Image Added. You can move it on screen
    13. by
    14. Image Removed
    • Image Added
      Note
      titleAttention!

      When

    15. setting

    • you set up

    16. the

    • leveling rods, the following conditions

    17. should

    • must be met:

    18. The
      1. the rods that are located at the same distance from the
    19. video
      1. camera lens
    20. , should
      1. must be of the same size
    21. .
      1. ;
    22. The
      1. the feet of the rods
    23. should
      1. must be located on the same surface (
    24. e.g.
      1. for example, floor)
    25. .
      1. ;
    26. In

      1. in complex scenes,

    27. it is recommended to add

      1. we recommend adding more than three rods to increase the accuracy of the detection

    28. .

      1. ;

    29. In

      1. in the parts of the frame where the lens vertical distortion is observed, the rods

    30. should

      1. must be parallel to the nearest vertical objects (

    31. e.g. door,

      1. for example, door or wardrobe)

    32. .

      1. ;

    33. If
      1. if you add only three leveling rods
    34. are added
      1. to
    35. the
      1. a scene,
    36. they
      1. you cannot
    37. be removed
      1. remove them from the scene,
    38. only their size and position can be changed.
      1. you can resize them and change their location;
      2. if you add
    39. If
      1. more than three leveling rods
    40. are added
      1. to
    41. the
      1. a scene, you can resize them and change their
    42. position
      1. location,
    43. size,
      1. and
    44. also
      1. remove them from the scene
    45. . Note
    titleAttention!
    For
      1. ;
      2. for portrait-oriented scenes (such as corridor, shopping aisle, warehouse aisle,
    46. etc.
      1. and so on), the arrangement of the rods
    47. should
      1. must form triangles.
    48. Image Removed
    • Info
      titleNote
      • For
    49. your
      • convenience of configuration, you can
    50. click the Image Removed button and configure the mask on a still frame. To undo
      • "freeze" the frame. Click the Image Added button. To cancel the action, click this button again.
    51. Info
    titleNote

    To delete the rod, click the Image Removed button.

  51. Click the Apply button.

Configuring the Man down detection tool is complete.

...

titleAttention!

...

      • The area for detection is displayed by default. To hide it, click the Image Added button. To cancel the action, click this button again.
      • To delete a rod, click the Image Added button.

  2. Click the Apply button.

Configuration of the Person down detector is complete.