To configure the Fight detector VL, do the following:
- Go to the
Detection Tools tab- Detectors tab.
Below the required camera, click Create… → Category: Other → Fight detector VL.
By default, the detection tool detector is enabled and set to generate events when a fight is detected in the scene.
If necessary, you can change the detection tool detector parameters. The list of parameters is given in the table:
| Parameter | Value | Description |
|---|
| Object features |
| Video stream | Main stream | If the camera supports multistreaming, select the stream for which detection is needed |
| Other |
| Enable | Yes | By default, the |
detection tool | detector is enabled. To disable, select |
the | the No value |
| No |
| Name | Fight detector VL | Enter the |
detection tool | detector name or leave the default name |
| Decoder mode | Auto | Select a processing resource for decoding video streams. When |
you select | selecting a GPU, a stand-alone graphics card takes priority ( |
when | decoding with Nvidia NVDEC chips). |
If there is no appropriate GPU, the decoding will use | The decoding uses the Intel Quick Sync Video technology if there is no appropriate GPU. Otherwise, CPU resources |
will be | are used for decoding |
| CPU |
| GPU |
| HuaweiNPU |
| Type | Fight detector VL | Name of the detector type (non-editable field) |
| Basic settings | | |
| Detection mode | CPU | Select the processor for the |
detection tool see | see Selecting Nvidia GPU when configuring detectors) |
| Nvidia GPU 0 |
| Nvidia GPU 1 |
| Nvidia GPU 2 |
| Nvidia GPU 3 |
| Detection threshold | 50 | Specify the threshold value that recognizes behavior as a fight. The higher the value, the greater the chance of detecting weak signs of a fight. The value must be in the range [1, 100] |
| Ignore time (sec) | 30 | Specify the time interval in seconds during which events |
won be processed after successful detection. The parameter is necessary to reduce the total number of events |
, since the analysis is performed continuously, and the duration of real events can be several seconds. You must select the required value empirically. The value must be in the |
range | Type | Fight detector VL | Name of the detection tool type (non-editable field) |
In the preview window, you set the area for object detection. You can specify the detection areas using area by moving the anchor points 
Image Modified (see Configuring a detection area).
| Info |
|---|
|
- For convenience of configuration, you can "freeze" the frame. Click the
 Image Modified button. To cancel the action, click this button again. - The detection area is displayed by default. To hide it, click the
 Image Modified button (see Configuring a detection area). To cancel the action, click this button again.
|
To save the parameters of the detection tooldetector, click the the Apply 
Image Modified button. To cancel the changes, click the Cancel 
Image Modified button.
Configuring the Fight detector VL is complete.
