Configuring the Person-based privacy masking

Video stream and scene requirements for the Person-based privacy masking

Hardware requirements for neural analytics operation

To configure the Person-based privacy masking, do the following:

Go to the Detection Tools tab.
Below the required camera, click Create… → Category: Poses → Person-based privacy masking.

By default, the detection tool is enabled and set to mask a person's head.

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

Parameter	Value	Description
Object features
Record mask to archive	Yes	By default, the recording of the mask to the archive is disabled. To record mask to the archive (see Displaying information from a detector (mask)), select the Yes value
Record mask to archive	No
Video stream	Main stream	If the camera supports multistreaming, select the stream for which detection is needed. Selecting a low-quality video stream allows reducing the load on the Server
Video stream	Second stream
Other
Enable	Yes	The detection tool is enabled by default. To disable the detection tool, select the No value
Enable	No
Name	Person-based privacy masking	Enter the detection tool name or leave the default name
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
Number of frames processed per second	1	Specify the number of frames that the detection tool will process per second. The value must be in the range [0.016; 100]
Type	Person-based privacy masking	Name of the detection tool type (non-editable field)
Advanced settings
Number of measurements in a row to trigger detection	3	Specify the minimum number of frames on which the detection tool must detect objects to generate an event. The value must be in the range [1, 20]
Segmenting network file		Select a neural network file. The standard neural networks for different processor types are located in the C:\Program Files\Common Files\AxxonSoft\DetectorPack\NeuroSDK directory. You don't need to select the standard neural networks in this field, the system will automatically select the required one. If you use a custom neural network, specify the path to the file. Note To ensure the correct operation of the neural network on Linux OS, the corresponding file must be located in the /opt/AxxonSoft/DetectorPack/NeuroSDK directory. Attention! If you use standard neural network (training wasn't performed in operating conditions), we guarantee the overall accuracy of 80-95% and the percentage of false positives of 5-20%.
Basic settings
Detection mode	CPU	Select the neural network mode (see Hardware requirements for neural analytics operation, Selecting Nvidia GPU when configuring detectors). Attention! It may take several minutes to launch the algorithm on NVIDIA GPU after you apply the settings. You can use caching to speed up future launches (see Optimizing the operation of neural analytics on GPU in Windows OS, Optimizing the operation of neural analytics on GPU in Linux OS). If you specify other processing resource than the CPU, this device will carry the most of computing load. However, the CPU will also be used to run the detection tool. Starting with Detector Pack 3.11, Intel HDDL and Intel NCS aren’t supported.
	Nvidia GPU 0
	Nvidia GPU 1
	Nvidia GPU 2
	Nvidia GPU 3
	Intel HDDL (not supported)
	Intel GPU
	Intel NCS (not supported)
Mask
Body	Yes	By default, the detection tool masks only a person's head. To mask other parts of the body, select the Yes value for the corresponding parameters
Body	No
Feet	Yes
Feet	No
Forearms	Yes
Forearms	No
Hands	Yes
Hands	No
Head	Yes
Head	No
Hips	Yes
Hips	No
Shins	Yes
Shins	No
Shoulders	Yes
Shoulders	No

By default, the entire frame is a detection area.

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

Configuring the Person-based privacy masking is complete.

Selected body parts of all persons will be hidden in the frame. For a user group with limited permissions to view masked video (see Roles), the mask is displayed on the video image of the selected camera in the Detection Tools and Hardware sections, on the layouts, in the archive and when exporting. For the admin user group, the mask is displayed only on the video image of the selected camera in the Detection Tools and Hardware sections, and when exporting, if the View masked video checkbox is clear (see Standard video recordings export).

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