General information on the standard sub-detectors

The standard sub-detectors generate events at certain actions of objects in the camera FOV:

Name of the sub-detector	Description
Line crossing	Detector generates an event when an object track crosses a virtual line
Loitering in area	Detector generates an event when an object stays in a specified area for a long period of time. The event stops when an object leaves the area or disappears inside the area
Stop in area	Detector generates an event when an object stops moving in a specified area. The event stops when an object leaves the area or disappears inside the area
Track masking	Detector that allows you to mask objects
Abandoned object	Detector generates an event when there is an abandoned object in a specified area
Motion in area	Detector generates an event when an object starts moving in a specified area. The event stops when an object stops in the area, leaves the area, or disappears inside the area
Entrance in area	Detector generates an event when an object enters a specified area
Exit from area	Detector generates an event when an object leaves a specified area
Multiple objects	Detector generates an event when the number of objects in a specified area exceeds the set value
Move from area to area	Detector generates an event when an object leaves one area and enters another area of the frame

To operate the standard sub-detectors, you can use the metadata from the sources:

Category	Detector
Category: Trackers	Motion detector Neural tracker Object tracker Human tracker VL
Category: Face (reduced set of sub-detectors: Line crossing, Loitering in area, Entrance in area)	Face detector VA Face detector TV Face detector VL
Category: Vehicle	License plate recognition BRS License plate recognition IV License plate recognition RR License plate recognition RR—Search in archive License plate recognition RR—Parking License plate recognition VT Vehicle recognition RR
Category: Poses	Human pose detector
Category: Production Safety	Equipment detector Equipment detector VL
Category: Retail	Barcode detector

The standard sub-detectors can operate on the basis of all of the above objects.

Note

You can track up to 25 objects at the same time.

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