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The metadata of the video stream is recorded to the database by default. To disable the parameter, select the No value

If the camera supports multistreaming, select the stream for which detection is needed. For the correct operation of the Face detector VL, we recommend using a high-quality video stream

Decoder mode

Select a processor for decoding video. When you select:

• Auto: GPU takes priority (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: CPU is used for decoding;
• GPU: GPU is used for decoding (decoding with Nvidia NVDEC chips);
• HuaweiNPU: HuaweiNPU is used for decoding

Name of the detector type (non-editable field)

Select the face recognition algorithm:

• Algorithm 1—the recognition speed depends on the background and the number of faces in the frame. Works slower than Algorithm 3.
• Algorithm 2—high speed, low accuracy. The recognition speed depends on the number of faces in the frame.
• Algorithm 3—medium speed, high accuracy. The recognition speed depends on the resolution of the image. Optimal for most scenes

Face rotation pitch ( ° )

Specify the allowable angle of face roll angle in degrees. You must select the required value empirically. The value must be in the range [0, 90]

Face rotation yaw from ( ° )

Specify the minimum allowable angle of face rotation to the right or left. You must select the required value empirically. The value must be in the range [-90, 90]

Face rotation yaw to ( ° )

Specify the maximum allowable angle of face rotation to the right or left. You must select the required value empirically. The value must be in the range [-90, 90]

Minimum image quality

Specify the minimum image quality for face detection. You must select the required value empirically. The value must be in the range [1, 100]

Minimum number of detections

Specify the minimum number of detections after which a track is considered a detected face. You must select the required value empirically. The value must be in the range [1, 10 000]

Number of frames between detections

Number of frames without detections

Send face images

The Send face images parameter is disabled by default. If you want to send face images to Axxon PSIM, select the Yes value

Track timeout

Specify the maximum time period in seconds after which the an event will be is sent. You must select the required value empirically. The value must be in the range [1, 10 000]

The Biometric data parameter is disabled by default

. When you search for faces (see Face search) by an attached photo or

track, as well as when

you check in lists of faces, there will be no results

If you want to

keep biometric data, select the Yes value. In this case, when

you search for faces (

see Face search), the search results will contain

faces that are similar to the attached photo or

track based on

a specified minimum similarity level (percentage).

For the correct check in lists of faces

, this parameter must also be enabled

The Medical mask detection parameter is disabled by default. If you use mask detectiondetector, select the the Yes value (see Masks Detectionsee Mask detector VL)

Specify the minimum size of the captured faces as a percentage of the frame size. You must select the required value empirically. The value must be in the range [1, 100]

Specify the minimum level of face recognition accuracy for the creation of a track. You must select the required value empirically. We recommend specifying the value of not less than 90. The higher the value, the fewer faces are detected, while the recognition accuracy increases. The value must be in the range [1, 100]