User's Manual

26 2.8-inch Linux Visible Light Product User Manual
Cyclic Delete ATT Data
The number of attendance logs allowed to be deleted in one time when the
maximum storage is attained. It can be disabled or set to a value ranged from 1 to
999.
Cyclic Delete ATT Photo
When attendance photos have reached full capacity, the device will automatically
delete a set value of old attendance photos. Users may disable the function or set a
valid value between 1 and 99.
Cyclic Delete Blacklist
Photo
When blacklisted photos have reached full capacity, the device will automatically
delete a set value of old blacklisted photos. Users may disable the function or set a
valid value between 1 and 99.
Confirm Screen Delay(s)
The length of time that the message of successful verification displays. Valid value:
1~9 seconds.
Face Detect Interval (s)
To set the facial template matching time interval as needed. Valid value: 0~9
seconds.
6.3 Face Parameters
Select Face on the System interface.
Item
Description
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 set, the lower the misjudgment rate, the higher the rejection rate, and vice
versa.
1:1 Match Threshold
Under 1:1 verification mode, the verification will only be successful when the
FRR FAR
Recommended
matching thresholds
1:N 1:1
High Low 85 80
Medium Medium
82 75
Low High 80 70