The Abandoned object detector can operate only with the Object tracker detector. |
Before you create and configure the Abandoned object detector, do the following:
- Create the Object tracker detector and set its general parameters (see Configuring the Object tracker).
- Configure some parameters of the Object tracker detector as follows:
| Parameter | Value | Description |
|---|
| Auto sensitivity | Yes | If auto sensitivity is enabled, sensitivity adjustments for moving and abandoned objects are not applied. To apply manual sensitivity adjustments, it is necessary to disable the auto sensitivity |
| Long-time abandoned object detection | Yes | If you enable this and the Enable filter parameter (see Configuring the Object tracker), it can reduce the number of false positives during detection |
| Abandoned object detection | Yes | Objects abandoned for 10 seconds or longer will be detected |
| Alarm on object's max. idle time in area | 60 | Specify the time in seconds—if the object remains idle for the time longer than the specified, it will be detected. This value must be in the range [15, 1800]. This parameter is used only for the Long-time abandoned object detection. It is recommended to select the parameter value starting from 15. |
|
| Abandoned object detection sensitivity | 20 | For this parameter to work, it is necessary to first disable the Auto sensitivity parameter. Set the sensitivity for abandoned object detector and long-time abandoned object detection in the range [1, 100]. This parameter depends on the lighting conditions and must be chosen empirically. It is recommended to select the parameter value starting from 20. |
|
- Save the detector parameters by clicking the Apply
button.
To create the Abandoned object detector, below the Object tracker detector, click Create... → Abandoned Object.
By default, the detector is enabled and set to detect brought and abandoned objects.
If necessary, you can change the detector parameters. The list of parameters is given in the table:
| Parameter | Value | Description |
|---|
| Other |
| Enable | Yes | By default, the detector is enabled. To disable, select the No value |
| No |
| Name | Abandoned Object
| Enter a detector name or leave the default name |
| Type | Abandoned Object | Detector type name (non-editable field) |
Basic settings
|
| Maximum object height | 100 | Set the maximum height of the object that must generate an event from the detector, as a percentage of the frame size. The value must be in the range [0.05, 100] |
| Maximum object width | 100 | Set the maximum width of the object that must generate an event from the detector, as a percentage of the frame size. The value must be in the range [0.05, 100] |
| Minimum object height | 0,1 | Set the minimum height of the object that must generate an event from the detector, as a percentage of the frame size. The value must be in the range [0.05, 100] |
| Minimum object width | 0,1 | Set the minimum width of the object that must generate an event from the detector, as a percentage of the frame size. The value must be in the range [0.05, 100] |
In the settings of the Object tracker detector and the Abandoned object sub-detector, the values of the maximum and minimum height and width of the object must be equal. |
|
Object type
| Any | Select this value if it is necessary to detect both taken and abandoned objects |
| Abandoned | Select a value if it is necessary to detect an object that has disappeared from the monitored area and crossed its borders |
| Taken |
By default, the entire frame is a detection area. If necessary, in the preview window, you can reduce the detection area (see Configuring a detection area) and/or set one or more skip areas (see Configuring a skip area).
- For convenience of configuration, you can "freeze" the frame. Click the
 button. To cancel the action, click this button again. - The detection area is displayed by default. To hide it, click the
 button. To cancel the action, click this button again.
|
To save the parameters of the detector, click the Apply button. To cancel the changes, click the Cancel 
button.
The Abandoned object detector is now configured.