VF Series User Manual
P a g e
|
20
Menu Item
Description
Save on failed verification:
Photo is taken and saved in failed verification.
Display User
Photo
To set user photo to be displayed when a user passes verification. Turn it
[ON]
to display
user photo and
[OFF]
to disable it.
Attendance Log
Alert
When the remaining storage is less than the set value, the device will automatically
alert users to the remaining storage information. It can be disabled or set to a value
ranging from 1 to 9999.
Cyclic Delete ATT
Data
The number of attendance logs allowed to be deleted at one go when the maximum
storage is attained. It can be disabled or set to a value ranging from 1 to 999.
Cyclic Delete ATT
Photo
The number of attendance photos allowed to be deleted at one go when the
maximum storage is attained. It can be disabled or set to a value ranging from 1 to 99.
Cyclic Delete
Blacklist Photo
The number of blacklist photos allowed to be deleted at one go when the maximum
storage is attained. It can be disabled or set to a value ranging from 1 to 99.
Confirm Screen
Delay(s)
The display of the verification information interface after verification. Value ranges from
1 to 9 seconds.
Face Detect
Interval (s)
To set the face comparison interval as required, within the range of 0-9 s.
6.3
Face Parameters
Press
Face
on the
System
interface.
The recommended thresholds are as follows:
Menu Item
Description
1:1 Match
Threshold
Under 1:1 Verification Method, only when the similarity between the verifying face and the
user’s registered faces is greater than this value can the verification succeed. The valid value
range is 70-120, with larger threshold leading to lower misjudgment rate and higher
rejection rate, and vice versa.
1:N Match
Threshold
Under 1:N Verification Method, only when the similarity between the verifying face and all
registered faces is greater than this value can the verification succeed. The valid value range
is 80-120, with larger threshold leading to lower misjudgment rate and higher rejection rate,
and vice versa.
FRR
FAR
Match Threshold
1:N
1:1
High
Low
85
80
Medium Medium
82
75
Low
High
80
70
