Computer Science ›› 2015, Vol. 42 ›› Issue (5): 281-285.doi: 10.11896/j.issn.1002-137X.2015.05.057

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Reliable Iris Recognition Using 2D Quadrature Filters

FANG Qiang and YAO Peng   

  • Online:2018-11-14 Published:2018-11-14

Abstract: This paper investigated a new approach for iris recognition with gray iris image.The approach extracts iris feature using 2D quadrature Log Gabor filter obtained by quaternion fourier transform.The method can get reliable iris phase information by orthogonal directions and calculate analytic signal of the filtered iris image as feature.The method characterizes iris feature in multidirectional ways.Thus iris feature encoding with high complexity that makes the iris feature more comprehensive is obtained.Feature matching adds template and uses the similar way of hamming distance to reduce the disturbance of eyelid,eyelash and facula.The results with 2D Log Gabor quadrature filters achieve significant recognition performance.

Key words: Iris recognition,Log Gabor,Quaternion quadrature filters,Analytic signal

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