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The To configure the Queue length detection module can be configured on the settings , use the settings panel of the the Queue length detection object created under object that is created on the basis of the Camera object in on the Hardware tab of the System settings dialog boxsettings window.

Configure To configure the Queue length detection module as followsdetection module, do the following:

1. Go to the setting panel of the Queue length detection
setting panel
2. object.
   Image Modified
3. Click the Settings button (1).
   The Detection settings window
appears
4. opens. 
   Image Modified
5. Specify the area of interest and the approximate size of a person
in
6. on the video image:
   1. Click the Stop video button to capture the frame of the video image (1).
   2. Click the Area of interest button (2).
Using the left mouse button, select the four

7. 1. On the captured video frame (3), sequentially set the anchor points of the area

in the captured video image (3) to be analyzed

8. 1. using the left mouse button, the situation of which you want to analyze (1).

Only

9. 1. You can add only one area

can be added. If a

10. 1. . When you try to add the second area

is specified

11. 1. ,

then

12. 1. the first

area will be

13. 1. one is deleted.

Upon selection of

14. 1. After you add the area, the remaining part of the video image

will be dimmed

15. 1. is darkened.

       Info
       title Note
       To remove

a selected

16. 1. the area, click the

button

17. 1. button Image Modified next to the Area of interest button.

       Image Modified

       Note
       title Attention!
       Setting the Area of interest is

a mandatory requirement

18. 1. the mandatory condition for the

detection module

19. 1. detector's operation.

    2. Click the Size of person button (2).
In

20. 1. On the captured video image (1),

specify

21. 1. set the approximate size of a person. To do this,

use

22. 1. click the left mouse button

to specify a

23. 1. and, by holding it, specify the rectangular area (1).

       Info
       title Note
       To remove the person size, click the button Image Modified next to the Size of person button.

       Image Modified

24. Set the parameters of the module
parameters
25. :
    1. Go to the Parameters tab (2).
Set
26. 1. In the
detection sensitivity field in a
27. 1. Detection sensitivity [0.0, 1.0] field, set the detector's sensitivity in conventional units in the range from 0 to 1
with up
28. 1. to two decimal places
(1)
29. 1. . The higher the sensitivity, the
less significant objects will be considered as a queue, i.e.
30. 1. more "small" alarms are referred to the queue, that is, the algorithm
will
31. 1. starts to react to more inconsiderable motion.
So
32. 1. Hence, if you set the minimal sensitivity value, only considerable
change
33. 1. changes of the scene
will
34. 1. can be analyzed by the queue length
detection if the minimum value of the
35. 1. detection
sensitivity is specified
36. 1. .
       Image Modified

    2. In the Periodicity of occupancy measurement

,

37. 1. (s) field, specify

a

38. 1. the time period in seconds for counting the number of people in the observed area

(2)

39. 1. . The minimum value of this parameter is

an

40. 1. the interval between frames of the analyzed video stream

,

41. 1. but

not

42. 1. cannot be less than one second

and not more than

43. 1. , the maximum is 3600 seconds. The value of the parameter depends on the scene characteristics. For example, if

a

44. 1. the queue in the

field of video camera view is not changing

45. 1. camera FOV doesn't change for a long time,

than

46. 1. the given parameter

value

47. 1. can be reasonably large.

It is not recommended to specify

48. 1. We don't recommend specifying the value of this parameter for more than 3-5 minutes for the correct operation of the algorithm on the average scene.

       Info
       title Note
       The more often you measure the occupancy

is measured

49. 1. , the greater the load on the system.

    2. Set the Reduce large resolution checkbox to create and process the new frame consisting of even lines of the initial
frame (3)
50. 1. one when an ordinary frame appears.
    2. In the Queue size
,
51. 1. (person) field, enter the minimum
number of people in a
52. 1. queue size required for
triggering the detection tool (4)
53. 1. the detector to generate an event.

    2. In the Frames processed per second [0.016, 100]

 field

54. 1. field, enter the number of frames per second that the

detection tool will process (5)

55. 1. detector processes. The higher the value, the more accurate the

detection tool

56. 1. detector's operation, but the higher the load on the processor.

       Info
       title Note

All events

57. 1. You can find all events that are received from the Queue length detection object

can be found

58. 1. in

the

59. 1. the Event

Viewer. See

60. 1. viewer interface window. For more details, see Obtaining traffic information in the area of interest.

61. Click the OK

button (6) to

62. button to save the changes and return to the settings panel of the Queue length detection object.

    Info
    title Note
    To return to the settings panel of the Queue length detection object without saving changes, click the Cancel button.

63. Click the Apply
button (2) on the settings
64. button on the settings panel of the Queue length detection object.

Configuring the Queue length detection module is completedcomplete.