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Documentation for Axxon One 2.0. Documentation for other versions of Axxon One is available too.
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To configure the Motion detector, do the following:
- Go to the Detectors tab.
Below the required camera, click Create… → Category: Trackers → Motion detector.
The Motion detector is based on detecting differences between the current frame and the static background, and it generates an event when there is a movement in the camera FOV.
You can set a number of parameters for all sub-detectors of the Motion detector at the same time.
If necessary, you can change the detector parameters. The list of parameters is given in the table:
| Parameter | Value | Description |
|---|---|---|
| Object features | ||
| Record mask to archive | Yes | By default, mask is recorded to the archive. To disable the parameter, select the No value |
| No | ||
| Record objects tracking | Yes | By default, object tracks are recorded to the database. To disable the parameter, select the No value. Attention! To obtain metadata, video is decompressed and analyzed, which results in a heavy load on the server and limits the number of cameras that you can use on it. |
| No | ||
| Video stream | Main stream | If the camera supports multistreaming, select the stream for which detection is needed. Selecting a low quality video stream reduces the load on the server. Attention! To ensure the correct display of streams on a multi-stream camera, all video streams must have the same frame aspect ratio. |
| Other | ||
| Enable | Yes | By default, the detector is enabled. To disable, select the No value |
| No | ||
| Name | Motion detector | Enter the detector name or leave the default name |
| Decode key frames | Yes | By default, the parameter is disabled. This parameter reduces the load on the server, but at the same time the detection quality decreases. If you want to decode key frames only, select the Yes value. We recommend enabling this parameter for "blind" (without video image display) servers, on which you want to perform detection. For the MJPEG codec, decoding isn’t relevant, as each frame is considered a key frame. Attention! The Number of frames processed per second and Decode key frames parameters are interrelated. If a local client isn’t connected to the server, the following rules work for remote clients:
If a local client is connected to the server, the detector will always work according to the set period. After disconnecting the local client, the above rules will be relevant again. |
| No | ||
| Decoder mode | Auto | Select a processing resource for decoding video streams. When you select 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 Intel Quick Sync Video technology. Otherwise, CPU resources will be used for decoding |
| CPU | ||
| GPU | ||
| HuaweiNPU | ||
| Type | Motion detector | Name of the detector type (non-editable field) |
| Advanced settings | ||
| Alarm end delay | 10 | Enter the time in seconds during which the generation of an event won't stop after the motion stops. If motion is detected again within the specified time, it will be considered as one event |
| Camera position | Wall | To eliminate false events from the detector when using a fisheye camera (see Configuring fisheye cameras), select the correct device location |
| Ceiling | ||
| Motion mask | Yes | By default, motion mask is enabled.
To disable the parameter, select the No value. |
| No | ||
| Object tracking | Yes | By default, the parameter is disabled. Select the Yes value to operate the sub-detectors and to display tracks and parameters (width and height as a percentage of the frame width or height and color) of tracking objects in the preview window:
|
| No | ||
| Basic settings | ||
| Sensitivity: Contrast | 12 | Specify the values of sensitivity to contrast and object size depending on the scene in the frame:
By default, the values of medium sensitivity are used. These values are recommended for most scenes:
If objects are far away and small in size, the maximum sensitivity is required. Recommended values:
If a camera is located indoors with a distance to objects of about four meters, the minimum sensitivity is required. Recommended values:
|
Sensitivity: Size | 9 | |
By default, the entire frame is a detection area. If necessary, in the preview window, set:
- one or more detection areas (see Configuring a detection area),
- one or more skip areas (see Configuring a skip area).
Note
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.
Configuration of the Motion detector is complete. If necessary, you can create and configure the necessary sub-detectors on the basis of the Motion detector (see Standard sub-detectors).
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