Abstract
Pupil localization is one of the significant pre-processing steps in iris recognition system, which plays a vital role in human authentication system. This paper proposes a novel approach for computerized pupil segmentation. A new fractional differential mask based on Stirling’s interpolation, has been employed to snip the pupil efficiently from the iris image. The pupil is segmented based on the dynamic threshold. The new mask and the dynamic threshold are the key factors in segmenting the pupil region. The proposed algorithm is implemented using MATLAB and tested on two public iris databases such as CASIA V1.0 and MMU2. Experimental results clearly indicate that the proposed method is comparably accurate in segmenting pupil with existing methods irrespective of its shape; the proposed method is also capable of handling low contrast images, specular reflections or images occluded by eyelids and eyelashes.
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The authors wish to thank the Chinese Academy of Science-Institute of Automation (CASIA) for providing CASIA Version 1.0 iris database and Multimedia University for providing MMU2 iris database.
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Kiruthiga, A.R., Arumuganathan, R. (2022). Pupil Segmentation Using Stirling’s Interpolation Based Fractional Differential Mask. In: Raman, I., Ganesan, P., Sureshkumar, V., Ranganathan, L. (eds) Computational Intelligence, Cyber Security and Computational Models. Recent Trends in Computational Models, Intelligent and Secure Systems. ICC3 2021. Communications in Computer and Information Science, vol 1631. Springer, Cham. https://doi.org/10.1007/978-3-031-15556-7_11
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