G4 Pro Series
User Manual
P a g e
| 93
Copyright©2022 ZKTECO CO., LTD. All rights reserved.
1:1 algorithm.
This is converted into a value that is then compared to a
set value. If the value of the scanned face exceeds that of
the set value, the verification passes. If it does not, the
verification fails.
The higher the threshold, the more accurate the
matching; the lower the threshold, the higher the
matching success rate.
1: N Matching
threshold
When conducting 1: N verification, face data is collected
and instantly compared with all face templates on the
system using a 1: N algorithm.
This is converted into a value that is compared to a set
value. If the value of the scanned face exceeds that of the
set value, the verification has passes. If it does not, the
verification fails.
The higher the threshold, the more accurate the
matching; the lower the threshold, the higher the
matching success rate.
Face enrollment
threshold
In face recognition, the higher the threshold is set, the
higher the accuracy of face recognition will be, which may
lead to unrecognizable.
On the contrary, if the threshold is too low, the accuracy of
face recognition will be lower, which may lead to
misjudgement and other phenomena. The default value is
68.
Other
parameters
Ambient light
(Fill light)
threshold
It is used for detecting ambient light brightness.
When the brightness of the surrounding environment is
less than the threshold, the complementary light is turned
on; when the brightness is greater than the threshold, the
complementary light is not turned on.
The default value is 100.
Motion detection
threshold
It is used for detecting whether there is a moving person
in front of the device to determine whether the face
recognition function is enabled. The default value is 500.
Face recognition
angle
To limit the face angle at face recognition, the
recommended threshold is 20.
Face size for
detection
The size of the face when face recognition. The range is
65-320 cm. The smaller the value, the farther the
detectable distance is otherwise, the closer it is.
