NG-MB1/NG-MB2 User Manual
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higher the rejection rate, and vice versa. It is recommended to set the default
value of 47.
1:1 Threshold Value: The recognition rate of mask wearing under the setting of
1:N verification mode. The higher the thresholds, the lower the misjudgment rate,
the higher the rejection rate, and vice versa. It is recommended to set the default
value of 63.
Face Enrollment Threshold: During face enrolment, 1:N comparison is used to
determine whether the user has already registered before. When the similarity
between the acquired facial image and all registered facial templates is greater
than this threshold, it indicates that the face has already been registered.
Face Pitch Angle: The pitch angle tolerance of a face for facial registration and
comparison. If a face’s pitch angle exceeds this set value, it will be filtered by the
algorithm, i.e. ignored by the terminal thus no registration and comparison
interface will be triggered.
Face Rotation Angle: The rotation angle tolerance of a face for facial template
registration and comparison. If a face’s rotation angle exceeds this set value, it will
be filtered by the algorithm, i.e. ignored by the terminal thus no registration and
comparison interface will be triggered.
Image Quality: Image quality for facial registration and comparison. The higher
the value, the clearer the image requires.
Minimum Face Size: Required for facial registration and comparison. If the
minimum size of the captured figure is smaller than this set value, then it will be
filtered off and not recognized as a face. This value can be understood as the face
comparison distance. The farther the person is, the smaller the face is, and the
smaller the face pixel will be obtained by the algorithm. Therefore, adjusting this
parameter can adjust the furthest comparison distance of faces. When the value is
0, the face comparison distance is not limited.
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