Pupil Edge Detection in Digital Imaging

摘要

A digital imaging system processes digital images of a subject's fundus and/or pupils to determine a pupil edge. Two regions of a digital image are evaluated to determine a threshold value. Typically, the two regions are selected such that each region would usually not include artifacts. The threshold value can then be used to identify a pupil-iris threshold in the digital image. Based on the pupil-iris threshold, pupil edges are identified.