In face recognition, eye center is defined as the geometric centroid of the close region formed by the upper and lower eyelids when the eye is opened. In practice, the midpoint of the left and right eye corners is often used instead. Because of the changing of gaze, pupil or origin of the iris circle is not necessarily the eye center.
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(2009). Eye Centers. In: Li, S.Z., Jain, A. (eds) Encyclopedia of Biometrics. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-73003-5_809
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DOI: https://doi.org/10.1007/978-0-387-73003-5_809
Publisher Name: Springer, Boston, MA
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