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Documentation for Axxon One 2.0. Documentation for other versions of Axxon One is available too.
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Configuring the parameters of the detection tool
To configure the Close-standing people detection, do the following:
- Create Pose Detection (see Configuring the Human pose detector).
- Below the Pose Detection, click Create… → Close-standing people detection.
By default, the Close-standing people detection generates an event when "skeleton" bounding boxes around people collide.
Note
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:
| Parameter | Value | Description |
|---|---|---|
| Other | ||
| Enable | Yes | The detection tool is enabled by default. To disable the detection tool, select the No value |
| No | ||
| Name | Close-standing people detection | Enter the detection tool name or leave the default name |
| Type | Close-standing people detection | Name of the detection tool type (non-editable field) |
| Basic settings | ||
| Distance sensitivity | 2 | Specify the distance between people in meters at which the detection tool must generate an event. Event is 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 length | 1.7 | Specify 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 detection | 4 | Specify the minimum number of frames with close-standing people for the detection tool to generate an eevent. The value must be in the range [1, 100]. Increasing the value can help eliminate false event, 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 detection tool, click the Apply 
button. To cancel the changes, click the Cancel 
button.
Configuring the frame perspective
if you want to change the distance that must generate an event, you must configure the frame perspective:
Attention!
For portrait-oriented scenes (such as corridor, shopping aisle, warehouse aisle, and so on), we recommend configuring the perspective in any case.
- In the preview window, click the
button. - 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.
Set at least three calibration rods. The lower anchor points of any three rods must not be located on the same line (horizontal, vertical, slanting, etc.).
- 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.
Attention!
When you set up leveling rods, the following conditions must be met:
- the rods that are located at the same distance from the camera lens, must be of the same size;
- the feet of the rods must be located on the same surface (for example, floor);
in complex scenes, we recommend adding more than three rods to increase the accuracy of the detection;
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);
- for portrait-oriented scenes (such as corridor, shopping aisle, warehouse aisle, and so on), the arrangement of the rods must form triangles.
Note
- 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.
- Click the Apply button.
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