1. A method for iris recognition comprising: locating an eye with a camera; obtaining an image of the eye with the camera; assessing the image of the eye with a set of image quality metrics with a processor; and segmenting the iris in the image of the eye with the processor; wherein the set of image quality metrics comprises: an offset measurement of the eye in the image of the eye; and a gaze measurement of the eye in the image of the eye; wherein a calibration of the segmenting of the iris is determined by the offset and gaze measurements; and wherein: if the offset and gaze measurements indicate offset or gaze of the eye in the image of the eye, then the segmenting of the iris is based on no circular calibration; and if the offset and gaze measurements. indicate no offset or gaze of the eye, then the segmenting of the iris is based on circular calibration.