Features in the menu of setting the sensitivity of face recognition.
- 1:1 Matching Threshold Value
1:1 match is where one verification method is matched to only one template. Valid value ranges from 55 to 120. The higher the thresholds, the lower the misjudgment, the higher the rejection rate, and vice versa. Default value: 63 is recommended.
- 1:N Matching Threshold Value
1:N (many) matches are where the verification is compared against N templates. Valid value ranges from 65 to 120. The higher the thresholds, the lower the misjudgment rate, the higher the rejection rate, and vice versa. Default value: 75 is recommended.
- Face Enrollment Threshold
Face enrollment opts 1:N comparison to determine the validity of a user (registered/no register). Registered facial templates will appear greater than the threshold. Default value: 88 is recommended.
- Face Pitch Angle
The pitch angle tolerance of a face for facial registration and comparison. Once a
face’s pitch angle exceeds this set value, the algorithm will conduct a filtration. Any
failure or ignorance by the terminal will not trigger any registration nor comparison.
interface. Default value: 35 is recommended.
- Face Rotation Angle
Rotation angle tolerance of a face is used for facial template registration and comparison. Once a face’s rotation angle exceeds this set value, the algorithm will conduct a filtration. Any failure or ignorance by the terminal will not trigger any registration nor comparison interface. Default value: 25 is recommended.
- Image Quality
Image quality for facial registration and comparison. The higher the value, the clearer
the image requires. Default value: 50 is recommended.
- Anti-spoofing with NIR
Identify and prevent fake photos and videos attack using near-infrared spectra imaging.
- LED Light Triggered Value
Change to control the on and off of the LED light. The greater the value, the more frequently the LED light will be turned on.
- Minimum Face Size
The required size for facial registration and comparison. The object will not be filtered
or recognized if the size of an object is smaller than this set value. This value can be
understood as the face comparison distance. Stand and adjust a moderate distance to
ensure the device captures the right face for comparison and algorithm processes. If
the value is 0, the face comparison distance is not limited. Default value: 50 is recommended.
- Motion Detection sensitivity
The measurement of the potential motion detection that wakes the terminal from static motion to the comparison interface. The greater the value, the higher sensitivity level the system would be. A larger value set can trigger the interface much easier and more frequently. Default value: 4 is recommended.
- Live Detection
Determine if the source of a biometric sample. Prevent a spoof attempt using visible
light images.
- Live Detection Threshold
Set value to judge the visible image comes from an alive body. The greater the value,
the better the visible light anti-spoofing performance. Default value: 55 is recommended.
- Wide Dynamic Range (WDR)
Balance light and extend image visibility under high contrast lighting scenes; Improve object detection under bright and dark environments.
- Anti-flicker Mode
Can be used when WDR is turned off. Reduce flicker when the device screen is flashing at the same frequency as the light.
Credit By : Webstation
