Configuring the Motion in area detector VI

To configure the Motion in area detector VI, do the following:

Go to the Detection Tools tab.
Below the required camera, click Create… → Category: Trackers → Motion in area detector VI.

By default, the detection tool is enabled and set to generate events when an object starts moving within the specified area.

If necessary, you can change the detection tool parameters. The list of parameters is given in the table:

Parameter	Value	Description
Object features
Record objects tracking	Yes	The metadata of the video stream is recorded to the database by default. To disable the parameter, select the No value
Record objects tracking	No
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 is enabled. To disable, select the No value
Enable	No
Name	Motion in area detector VI	Enter the detection tool name or leave the default name
Background accumulation	Yes	By default, scene background accumulation is enabled. To disable, select the No value
Background accumulation	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
Detection mode	CPU	Select the processor for the detection tool operation (see Selecting Nvidia GPU when configuring detectors)
	Nvidia GPU 0
	Nvidia GPU 1
	Nvidia GPU 2
	Nvidia GPU 3
Detection sensitivity (%)	10	Specify the detection tool sensitivity level as a percentage of detected moving objects within the specified area. The higher the sensitivity value, the more subtle the movement that can be detected. The value must be in the range [0, 100]
Frame size change	640	Specify the size to which the video is compressed before analysis. The value must be in the range [480, 960]
Head size	50	Specify the size of a person's head in the frame. The value should be given as a percentage of the frame's vertical side and must be in the range [1, 100]
Ignore time (sec)	0	Specify the time interval in seconds during which events won't be processed after successful detection. The value must be in the range [0, 9999]
Initiate event after (sec)	5	Specify in seconds, in what time interval the event should be generated after it begins. The value must be in the range [0, 9999]
Minimum number of objects	0	Specify the minimum number of objects required to trigger the detection tool. The value must be in the range [0, 20]
Minimum threshold (%)	30	Specify the minimum threshold percentage at which an event is created. The value must be in the range [0, 100]
Number of execution threads	4	Specify the number of execution threads. The value must be in the range [0, 100]
Number of frames processed per second	12	Specify the number of frames processed per second. Value should be in range [0.016, 100] Attention! The detector operates optimally with the default value for most use cases. Changing this value may reduce the detector's performance quality.
Saving background	Yes	By default, saving the scene background is enabled. To disable, select the No value Attention! Background files are automatically saved to the directory C:\ProgramData\VideoIntellect\. The size of this folder can quickly increase, potentially filling up all available space on the C drive. It is not possible to set a limit on the maximum volume of this directory, so it’s important to periodically check its contents and clear it if necessary.
Saving background	No
State saving interval	0	Specify the state saving interval in seconds. The value must be in the range [0, 9999]
Type	Motion in area detector VI	Name of the detection tool type (non-editable field)

In the preview window, you can specify the detection areas using the anchor points (see Configuring a detection 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 (see Configuring a detection area). To cancel the action, click this button again.

To save the parameters of the detection tool, click the Apply button. To cancel the changes, click the Cancel button.

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Documentation for Axxon One 2.0. Documentation for other versions of Axxon One is available too.