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Proceedings Paper

Iris image acquirement and preprocessing in biometrics
Author(s): Xing Ming; Zhihui Li; Yuanning Liu
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Paper Abstract

As a biometrics, iris recognition is becoming an active topic in recent years. Due to constriction and dilation of iris sphincter muscle affected by illumination, iris images should be captured under steady illumination. The principles of our homemade iris capture device and real product are introduced first. This device can be used to capture fine iris images and store them into the computer. Due to changes of head orientation and binocular vergence at different iris acquirement time, a preprocessing method including iris location, normalization, image enhancement and rotation correction is then applied to achieve rotation, shift and scale invariance. Finally the correlation measurement is used to evaluate the performance of this processing.

Paper Details

Date Published: 9 December 2005
PDF: 7 pages
Proc. SPIE 6024, ICO20: Optical Devices and Instruments, 602414 (9 December 2005); doi: 10.1117/12.666847
Show Author Affiliations
Xing Ming, Jilin Univ. (China)
Zhihui Li, Jilin Univ. (China)
Yuanning Liu, Jilin Univ. (China)

Published in SPIE Proceedings Vol. 6024:
ICO20: Optical Devices and Instruments
James C. Wyant; X. J. Zhang, Editor(s)

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