Face quality attributes struct. More...

#include <sfe_face.h>

Data Fields
float	sharpness
	Normalized face attribute for evaluating whether an area of face image is not blurred. Sharpness values are from range <0,inf>. Values near 0 indicate 'very blurred', values near (or above) 1 indicate 'very sharp'. The decision threshold is in range <0.08, 0.7>.

float	brightness
	Normalized face attribute for evaluating whether an area of face is correctly exposed. Brightness values are from range <0,1>. Values near 0 indicate 'too dark', values near 1 indicate 'too light', values around 0 indicate OK. The decision thresholds are around 0.25 and 0.75.

float	contrast
	Normalized face attribute for evaluating whether an area of face is contrast enough. Contrast values are from range <0,1>. Values near 0 indicate 'very low contrast', values near 1 indicate 'very high contrast', values around 0 indicate OK. The decision thresholds are around 0.25 and 0.75.

float	unique_intensity_levels
	Normalized face attribute for evaluating whether an area of face has appropriate number of unique intensity levels. Unique intensity levels values are from range <0,1>. Values near 0 indicate 'very few unique intensity levels', values near 1 indicate 'enough unique intensity levels'. The decision threshold is around 0.5.

Detailed Description

Face quality attributes struct.

Examples: example_face_liveness.cpp.

Definition at line 283 of file sfe_face.h.

Field Documentation

◆ brightness

float SFEFaceQualityAttributes::brightness

Normalized face attribute for evaluating whether an area of face is correctly exposed. Brightness values are from range <0,1>. Values near 0 indicate 'too dark', values near 1 indicate 'too light', values around 0 indicate OK. The decision thresholds are around 0.25 and 0.75.

Examples: example_face_liveness.cpp.

Definition at line 293 of file sfe_face.h.

◆ contrast

float SFEFaceQualityAttributes::contrast

Normalized face attribute for evaluating whether an area of face is contrast enough. Contrast values are from range <0,1>. Values near 0 indicate 'very low contrast', values near 1 indicate 'very high contrast', values around 0 indicate OK. The decision thresholds are around 0.25 and 0.75.

Examples: example_face_liveness.cpp.

Definition at line 299 of file sfe_face.h.

◆ sharpness

float SFEFaceQualityAttributes::sharpness

Normalized face attribute for evaluating whether an area of face image is not blurred. Sharpness values are from range <0,inf>. Values near 0 indicate 'very blurred', values near (or above) 1 indicate 'very sharp'. The decision threshold is in range <0.08, 0.7>.

Examples: example_face_liveness.cpp.

Definition at line 288 of file sfe_face.h.

◆ unique_intensity_levels

float SFEFaceQualityAttributes::unique_intensity_levels

Normalized face attribute for evaluating whether an area of face has appropriate number of unique intensity levels. Unique intensity levels values are from range <0,1>. Values near 0 indicate 'very few unique intensity levels', values near 1 indicate 'enough unique intensity levels'. The decision threshold is around 0.5.

Examples: example_face_liveness.cpp.

Definition at line 305 of file sfe_face.h.

The documentation for this struct was generated from the following file: