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Smart AC1/TD
w w w . t i m e t e c c l o u d . c o m
6.3 Face Parameters
Click Face on the System interface.
Items
1:N Match
Threshold
1:1 Match
Threshold
Face Enrollment
Threshold
Face Pitch Angle
Descriptions
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 misjudgment rate, the higher the rejection rate, and vice versa.
The default value of 75 is recommended.
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 misjudgment rate, the higher the rejection rate, and vice versa.
The default value of 63 is recommended.
During face enrollment, 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.
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 algo-
rithm, i.e. ignored by the terminal thus no registration and comparison
interface will be triggered.
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