To configure object tracker, do as follows:

  1. Select the Object tracker object. 

  2. Configure parameters.

    ParameterDescription
    EnableEnable/disable detection tool.
    Record object trackingIf you need to enable recording of metadata, activate this parameter.
    Auto SensitivityIf you require automatic adjustment of the sensitivity of scene analytic detection tools, activate this parameter.
    Camera positionЕo reduce false alarms rate from a fish-eye camera, you have to position it properly.  For other devices, this parameter is not valid.
    Decoder mode

    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's no appropriate GPU, the decoding will use the Intel Quick Sync Video technology. Otherwise, CPU resources will be used for decoding.

    Max. Object height

    Max. Object width

    		Maximum height and width of a detectable object as a percent of the FoV height. The values should be in the range [0,05; 100].

    Min. Object height

    Min. Object width

    		Minimum height and width of a detectable object as a percent of the FoV height. The values should be in the range [0,05; 100].
    Motion detection sensitivitySet the sensitivity for motion detection tools, on a scale of 1 to 100.
    Frame size change

    Analyzed framed are scaled down to a specified resolution (8, 1280 pixels on the longer side). This is how it works:

    1. If the longer side of the source image exceeds the value specified in the Frame size change field, it is divided by two.

    2. If the resulting resolution falls below the specified value, it is used further.

    3. If the resulting resolution still exceeds the specified limit, it is divided by two, etc.

    Antishaker To correct for camera shake, activate this parameter. This setting is recommended only for cameras that show clear signs of shaking-related image degradation.
    Time of Object in DBEnter the time interval in seconds, during which  object's properties will be stored. If the object leaves and enters the FoV within the specified time, it will be identified as one and the same object (same ID).  
    Object calibrationActivare, if you want to configure the perspective.
    Leveling rod heightEnter the height in decimeters of the object you want to find.
    Enable filterIf necessary, configure the neural network filter. The neural network filter processes the results of the tracker and filters out false alarms on complex video images (foliage, glare, etc.). 
    Moving object filter modeSelect the processor for the neural network — CPU, one of GPUs or a IntelNCS 
    Abandoned object filter modeSelect the processor for the neural network — CPU, one of GPUs or a IntelNCS.
    Moving object filter file

    Select a neural network for analyzing moving objects.

    A neural network filter can be used either only for analyzing moving objects, or only for analyzing abandoned objects. You cannot operate  two neural networks simultaneously.

    Abandoned object filter fileSelect a neural network for analyzing  abandoned objects.


  3. By default, the entire FoV is a scene analytics zone. If you need to exclude parts of the scene prone to false alarms from detection (leaves, water, etc.), you should set privacy masks − zone with scene analytics and metadata generation disabled. To do so, follow the steps:

    1. Click  against the object tracker.
    2. Select Add device.

    3. Select VisualElement.

    4. Select the VisualElement object. 
    5. Choose Skip area in the list.
    6. In the FoV, set the nodes of the closed area, in order, inside of which you want no detection.
  4. Click  to save changes.

The detection tool is now configured.