NB-SEMS-FRT User Manual Ver.1.0
Copyright © 2020 Newbridge Technologies Int. Ltd. All rights reserved.
26
6.3-
FACE PARAMETERS
Items
Descriptions
1:N Match Threshold
Under 1:N verification mode, the verification will only be successful when the
similarity between the acquired facial image and all registered facial templates
is greater than the set value.
The valid value ranges from 65 to 120. The higher the thresholds, the lower the
misjudgement rate, the higher the rejection rate, and vice versa. The default
value of 75 is recommended.
1:1 Match Threshold
Under 1:1 verification mode, the verification will only be successful when the
similarity between the acquired facial image and the facial templates enrolled in
the device is greater than the set value.
The valid value ranges from 55 to 120. The higher the thresholds, the lower the
misjudgement rate, the higher the rejection rate, and vice versa. The default
value of 63 is recommended.
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.
