1. A method for blur estimation in eye images, said method comprising: locating a region of an image containing an eye and identifying a center of a pupil region in said image; re-sampling said image along lines of various orientations, wherein each line of orientation thereof passes through a center of said pupil region, in order to generate data indicative of a model of said image; and determining an amplitude and a phase of a cosine that most closely matches said data, wherein said amplitude and phase respectively correspond to a blur extent and a direction, respectively, with respect to said image.