Configuring the parameters of the detection tool

To configure the Close-standing people detection, do the following:

  1. Create Pose Detection (see Configuring Pose Detection).
  2. Below the Pose Detection, click Create… → Close-standing people detection.

By default, the Close-standing people detection triggers when "skeleton" bounding boxes around people collide. 

Bounding boxes are not displayed in the interface. They are usually a bit larger than the "skeletons" dimensions.

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

ParameterValueDescription
Other
EnableYesThe detection tool is enabled by default. To disable the detection tool, select the No value
No
NameClose-standing people detectionEnter the detection tool name or leave the default name
TypeClose-standing people detectionName of the detection tool type (non-editable field)
Basic settings
Distance sensitivity2Specify the distance between people in meters at which the detection tool must trigger. Alarm will be generated if the distance between people in the frame is equal to or less than the specified distance. The value must be in the range [0, 20]
Leveling rod length1.7Specify the average height of a person in meters, according to which the leveling rods are set. The value must be in the range [0 3]
Number of measurements in a row to trigger detection4Specify the minimum number of frames with close-standing people for the detection tool to trigger. The value must be in the range [1, 100].
Increasing the value can help eliminate false alarms, but increases the risk of skips. 
Decreasing the value can help reduce skips, but increases the probability of false alarms

To save the parameters of the detection tool, click the Apply  button. To cancel the changes, click the Cancel  button.

Configuring the frame perspective 

if you want to change the triggering distance, you must configure the frame perspective:

For portrait-oriented scenes (such as corridor, shopping aisle, warehouse aisle, and so on), we recommend configuring the perspective in any case.

  1. In the preview window, click the  button.
  2. Specify the size of the same object in different parts of the frame by eye. To create a leveling rod, left-click the video image to add two anchor points. You must set at least three leveling rods. The size of the leveling rod must be about the average height of a person at this part of the frame. You can resize the rod by stretching its anchor points . You can move it on screen by dragging and dropping.

    When you set up leveling rods, the following conditions must be met:

    1. the rods that are located at the same distance from the camera lens, must be of the same size;
    2. the feet of the rods must be located on the same surface (for example, floor);

    3. in complex scenes, we recommend adding more than three rods to increase the accuracy of the detection;

    4. in the parts of the frame where the lens vertical distortion is observed, the rods must be parallel to the nearest vertical objects (for example, door, wardrobe);

    5. for portrait-oriented scenes (such as corridor, shopping aisle, warehouse aisle, and so on), the arrangement of the rods must form triangles.
    • For convenience of configuration, you can "freeze" the frame. Click the  button. To cancel the action, click this button again.
    • The area for detection is displayed by default. To hide it, click the  button. To cancel the action, click this button again.
    • To delete a rod, click the  button.

  3. Click the Apply button.