International Journal on Advanced Science, Engineering and Information Technology, Vol. 7 (2017) No. 5, DOI:10.18517/ijaseit.7.5.3393

Comparative Study of Different Window Sizes Setting in Median Filter for Off-angle Iris Recognition

Rohayanti Hassan, Shahreen Kasim, Nurazrin Mohd Esa, Zalmiyah Zakaria

Abstract

Iris recognition is one of the most popular biometric recognition that has increased in the number of acceptance user gradually because the reliability and accuracy provided by this system. However, this accuracy is highly correlated with the quality of iris image captured. Thus, a poor quality of image captured required an enhancement technique. This study aims to identify the optimum window size for median filter. Identifying the optimum window size setting required template matching value result of the off-angle iris recognition. The lowest value obtained showed that the window size applied was optimized. The result of this study demonstrated, for WVU-OA dataset for 15 degree off-angle iris of right and left eyes, the windows size of [5 5] and [7 7] respectively are the optimum to maximize the median filter function. Meanwhile, for 30 degree off-angle iris of right and left eyes data, the optimum windows size proposed are [7 7] and [5 5] respectively. On the other hand, analysis using UBIRIS dataset showed that the optimum window size for 30 degree off-angle iris, both right and left eye is [7 7] which is able to maximize the performance of median filter. In conclusion, the effective value to be applied for all dataset are [5 5] and [7 7] because at most cases it provide a better template matching compared to without applying the filtering method.

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