A Novel Iterative Approach to Pupil Localization
Biometric Recognition: 9th Chinese Conference, CCBR 2014, Shenyang, China …, 2014•Springer
This paper proposes a novel method for localizing the center of pupils. Given a face
detected in an image, it first empirically initializes the eye regions in the face, and locates the
pupils within the eye regions by using an improved isophote curvature based method. It then
updates the eye regions according to the detected pupil centers. In the updated eye regions,
the pupil centers are also refined. The above process iterates until the detected pupil centers
have sufficiently high consistency with the eye regions. Compared with previous methods …
detected in an image, it first empirically initializes the eye regions in the face, and locates the
pupils within the eye regions by using an improved isophote curvature based method. It then
updates the eye regions according to the detected pupil centers. In the updated eye regions,
the pupil centers are also refined. The above process iterates until the detected pupil centers
have sufficiently high consistency with the eye regions. Compared with previous methods …
Abstract
This paper proposes a novel method for localizing the center of pupils. Given a face detected in an image, it first empirically initializes the eye regions in the face, and locates the pupils within the eye regions by using an improved isophote curvature based method. It then updates the eye regions according to the detected pupil centers. In the updated eye regions, the pupil centers are also refined. The above process iterates until the detected pupil centers have sufficiently high consistency with the eye regions. Compared with previous methods, the proposed method can better cope with faces with varying pose angles. Evaluation experiments have been done on the public BioID database and a set of self-collected face images which display various pose angles and illumination conditions. The results demonstrate that the proposed method can more accurately locate pupil centers and is robust to illumination and pose variations.
Springer
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