3.4 STSilentLivenessFaceEnumType

typedef NS_ENUM(NSInteger, STIDSilentLivenessFaceDistanceStatus)

Face distance in liveness detection.

Type	Description
STIDSilentLiveness_FACE_TOO_FAR	Face is too far away from the phone
STIDSilentLiveness_FACE_TOO_CLOSE	Face is too close to the phone
STIDSilentLiveness_DISTANCE_FACE_NORMAL	Face distance normal
STIDSilentLiveness_DISTANCE_UNKNOWN	Face distance unknown

typedef NS_ENUM(NSUInteger, STIDSilentLivenessFacePositionStatus)

Faces status in liveness detection.

Type	Description
STIDSilentLiveness_POSITION_NO_FACE	No face
STIDSilentLiveness_POSITION_FACE_NORMAL	Face inside the frame
STIDSilentLiveness_POSITION_FACE_OUT_BOUND	Face out of the frame
STIDSilentLiveness_POSITION_FACE_UNKNOW	Face unknown

typedef NS_ENUM(NSUInteger, STIDSilentLivenessFaceOrientaion)

Face orientation. The enumeration type defines four orientations: up, down, left, and right.

Type	Description
STIDSilentLiveness_FACE_UP	Facing up, face orientation normal
STIDSilentLiveness_FACE_LEFT	Facing left, face is rotated 90 degrees counterclockwise
STIDSilentLiveness_FACE_DOWN	Facing down, face is rotated 180 degrees counterclockwise
STIDSilentLiveness_FACE_RIGHT	Facing right, face is rotated 270 degrees counterclockwise

typedef NS_ENUM(NSInteger, STIDSilentLivenessOcclusionStatus)

Liveness occlusion type.

Type	Description
STIDSilentLiveness_UNKNOW	Unknown occlusion
STIDSilentLiveness_NORMAL	Unblocked
STIDSilentLiveness_OCCLUSION	Blocked

typedef NS_ENUM(NSInteger, STIDSilentLivenessQuailityStatus)

‌Liveness quality type.

Type	Description
STIDSilentLiveness_QUALITY_UNKNOW	Unknown quality
STIDSilentLiveness_QUALITY_NORMAL	Normal quality
STIDSilentLiveness_QUALITY_LIGHT_DARK	Face too dark
STIDSilentLiveness_QUALITY_LIGHT_STRONG	Face too bright
STIDSilentLiveness_QUALITY_BLUR_FUZZY	Face too blur or fuzzy