Real-time image restoration for iris recognition systems

IEEE Transactions on Systems, Man, and Cybernetics. Part B, Cybernetics : a Publication of the IEEE Systems, Man, and Cybernetics Society
Byung Jun Kang, Kang Ryoung Park

Abstract

In the field of biometrics, it has been reported that iris recognition techniques have shown high levels of accuracy because unique patterns of the human iris, which has very many degrees of freedom, are used. However, because conventional iris cameras have small depth-of-field (DOF) areas, input iris images can easily be blurred, which can lead to lower recognition performance, since iris patterns are transformed by the blurring caused by optical defocusing. To overcome these problems, an autofocusing camera can be used. However, this inevitably increases the cost, size, and complexity of the system. Therefore, we propose a new real-time iris image-restoration method, which can increase the camera's DOF without requiring any additional hardware. This paper presents five novelties as compared to previous works: 1) by excluding eyelash and eyelid regions, it is possible to obtain more accurate focus scores from input iris images; 2) the parameter of the point spread function (PSF) can be estimated in terms of camera optics and measured focus scores; therefore, parameter estimation is more accurate than it has been in previous research; 3) because the PSF parameter can be obtained by using a predetermined equation, iris image res...Continue Reading

References

Apr 1, 1987·IEEE Transactions on Pattern Analysis and Machine Intelligence·A P Pentland

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Citations

Jun 13, 2013·IEEE Transactions on Cybernetics·Xiaoqiang LuPingkun Yan
Jul 28, 2012·IEEE Transactions on Systems, Man, and Cybernetics. Part B, Cybernetics : a Publication of the IEEE Systems, Man, and Cybernetics Society·Hsien-Hsin ChouHwai-Tsu Hu
Sep 26, 2012·IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society·Wei Liu, Weisi Lin
Jun 28, 2012·IEEE Transactions on Systems, Man, and Cybernetics. Part B, Cybernetics : a Publication of the IEEE Systems, Man, and Cybernetics Society·Liangpei ZhangHongyan Zhang
Jul 25, 2015·IEEE Transactions on Cybernetics·Huanfeng ShenLiangpei Zhang
Dec 20, 2015·IEEE Transactions on Cybernetics·Sheng-Hsun HsiehChin-Chen Chang
Jun 24, 2017·IEEE Transactions on Cybernetics·Wensen FengYunjin Chen

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