Instance Property

roll

The detected face's roll angle, as populated by the VNDetectFaceRectanglesRequest.

Declaration

@property(readonly, nonatomic, strong) NSNumber *roll;

Discussion

The roll is reported in radians. A positive angle corresponds to counterclockwise roll. The range is [-Pi, Pi). A nil value indicates that the roll angle hasn't been computed.

See Also

Determining Facial Orientation

yaw

The detected face's yaw angle, as populated by the VNDetectFaceRectanglesRequest.