SpeedFace-V5L-RFID
User Manual
P a g e
| 52
Copyright©2020 ZKTECO CO., LTD. All rights reserved.
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 misjudgment rate, the higher the rejection rate, and vice versa. The
default value of 63 is recommended.
Face Enrollment
Threshold
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.
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 an object
’
s size is smaller than this set value, the object will be filtered 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.
LED Light Triggered
Threshold
This value controls the on and off of the LED light. The larger the value, the
more frequently the LED light will be turned on.
Motion Detection
Sensitivity
A measurement of the amount of change in a camera
’
s field of view that
qualifies as potential motion detection that wakes up the terminal from
standby to the comparison interface. The larger the value, the more sensitive
the system would be, i.e. if a larger value is set, the comparison interface is
much easier and frequently triggered.
