To
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create the Loitering
...
in area detector, do the following:
- Create the required
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- detector and specify its parameters (
...
- see Configuring detectors and their sub-detectors).
- Below the created
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- detector,
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- click Create… → Loitering
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- in area.
By default, the
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detector is enabled and
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set to generate events when an object leaves the detection area after spending
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some time there.
If necessary, you can change the
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detector parameters. The list of parameters is given in the table:
| Parameter | Value | Description |
|---|
| Other |
| Enable | Yes | The |
detection tool | detector is enabled by default. To disable the |
detection tool the value In Area detection tool | detector name or leave the default name |
| Event hold time (sec) | 2 | | Info |
|---|
| The parameter is taken into account only if |
|
the the Trigger on group of objects parameter is enabled. |
This is the time period during which the |
detection tool detector waits for the next objects after the first object in the group is detected. If the specified number of objects (specified in the Number of alarm objects parameter) are detected within this time period, the |
detection tool triggersdetector generates an event. If no additional objects are detected within the specified time period, the |
detection tool triggergenerate an event.
Specify the time period in seconds when events will be held when responding to a group of objects. The value must be in the range [0, 86400] |
| Type | Loitering |
In Area detection tool | detector type (non-editable field) |
| Advanced settings |
| X-axis offset | 15 | Specify the X-axis and Y-axis offsets as a percentage of the track area to |
set receive events from the specified area |
of the detection tool triggering. The values must be in the |
range 5040] |
| Y-axis offset | 10 |
| Basic settings |
| Event duration to trigger detection (sec) | 30 | Specify the time of the object |
stay | staying in the detection area in seconds. The value must be in the range [0, |
86400| 172800] |
| Maximum object height | 100 | Specify the maximum object height as a percentage of the frame size for the |
detection tool to triggerdetector to generate an event. The value must be in the range [0.05, 100] |
.| Note |
|---|
| The values of the maximum object height must be equal in the settings of |
|
the Object Tracker and Loitering In Areathe Object tracker and Loitering in area. |
|
| Maximum object speed | 500 | Specify the maximum object speed per second for the |
detection tool to triggerdetector to generate an event. The value must be in the range [0, 500] |
.In - In Axxon One, speed is a conditional value that is calculated using values of different dimensions. The speed calculation algorithm takes into account both the frame width and its height.
- For a visual understanding of the speed values, we recommend specifying the speed when searching the archive (see Configuring minimum and maximum object speed).
|
|
| Maximum object width | 100 | Specify the maximum object width as a percentage of the frame size for the |
detection tool to triggerdetector to generate an event. The value must be in the range [0.05, 100] |
.| Note |
|---|
| The values of the maximum object width must be equal in the settings of |
|
the Object Tracker and Loitering In Areathe Object tracker and Loitering in area. |
|
| Minimum object height | 0.1 | Specify the minimum object height as a percentage of the frame size for the |
detection tool to triggerdetector to generate an event. The value must be in the range [0.05, 100] |
.| Note |
|---|
| The values of the minimum object height must be equal in the settings of |
|
the Object Tracker and Loitering In Areathe Object tracker and Loitering in area. |
|
| Minimum object speed | 0 | Specify the minimum object speed per second for the |
detection tool to triggerdetector to generate an event. The value must be in the range [0, 500] |
.In - In Axxon One, speed is a conditional value that is calculated using values of different dimensions. The speed calculation algorithm takes into account both the frame width and its height.
- For a visual understanding of the speed values, we recommend specifying the speed when searching the archive (see Configuring minimum and maximum object speed).
|
|
| Minimum object width | 0.1 | Specify the minimum object width as a percentage of the frame size for the |
detection tool to triggerdetector to generate an event. The value must be in the range [0.05, 100] |
.| Note |
|---|
| The values of the minimum object width must be equal in the settings of |
|
the Object Tracker and Loitering In Areathe Object tracker and Loitering in area. |
|
| Number of alarm objects | 2 | | Info |
|---|
| The parameter is taken into account only if |
|
the the Trigger on group of objects parameter is enabled. |
This number determines the minimum number of objects that are considered a group and can |
cause the detection tool triggeringgenerate an event.
Specify the number of objects that can cause the |
detection tool triggeringdetector to generate an event. The value must be in the range [1, 100] |
| Object class | All classes | Select the object class that must |
trigger the detection toolgenerate an event. The default value |
is . Entrance In Area detection tool below the Object Tracker and select the Person value, the detection tool won't trigger if it - Loitering in area detector as a child object of the Object tracker and select the Person value, there won't be any events if the tracker detects the movement of several people nearby.
- When you create
|
|
the Entrance In Area detection tool below the - the Loitering in area detector as a child object of the Category: Face
|
|
and detection tools, the - detectors, the Object class
|
|
parameter the value |
| Vehicle |
| Person |
| Time detection mode | Specified time | The |
detection tool will trigger | detector generates an event after the object leaves the area after spending there the time specified in the Event duration to trigger detection (sec) parameter (default value) |
| Longer than specified time | The |
detection tool will trigger | detector generates an event after the object leaves the area after spending |
there | more time there than specified in the Event duration to trigger detection (sec) parameter. If an event has already been generated and the track is still in the area after an event, the event won't be generated again until the track leaves the area and enters it again |
| Shorter than specified time | The |
detection tool will trigger | detector generates an event after the object leaves the area after spending there less time than specified in |
the | the Event duration to trigger detection (sec) parameter |
| Trigger on group of objects | Yes | The parameter is disabled by default. If you want the |
detection tool to trigger detector to generate an event only for a group of objects, select the Yes value |
.| Info |
|---|
| - The group of objects that must cause the
|
|
detection tool to trigger - detector to generate an event is specified in the Object class parameter.
- The number of objects that
|
|
is - are considered a group is specified in the Number of alarm objects parameter.
- Waiting time for the next objects after the first object from the group is detected is specified in the Event hold time (sec) parameter.
For example, you select the Person object class, the Number of alarm objects is |
|
2 3, the Event hold time (sec) is 2 seconds, and the Trigger on group of objects parameter is enabled. If the |
|
detection tool detector detects the first person and detects |
|
the others within two seconds, these people are considered a group, and the |
|
detection tool will triggerdetector generates an event. |
|
| No |
By default, the entire frame is the a detection area. In If necessary, in the preview window, you can specify reduce the detection areas using the anchor points 
Image Removed area (see Configuring a detection area) and/or set one or more ignore areas (see Configuring the Detection Zoneignore area).
| Info |
|---|
|
- For convenience of configuration, you can "freeze" the frame. Click the
 Image Removed - Image Added button. To cancel the action, click this button again.
- The detection area is displayed by default. To hide it, click the
 Image Removed - Image Added button. To cancel the action, click this button again.
|
To save the parameters of the detection tooldetector, click the Apply 
Image Removed buttonImage Added button. To cancel the changes, click the Cancel 
Image Removed buttonImage Added button.
Configuration of the Loitering in area detector is complete.
