4.8 Article

Complex-Valued Iris Recognition Network

出版社

IEEE COMPUTER SOC
DOI: 10.1109/TPAMI.2022.3152857

关键词

Automatic complex-valued iris feature learning; data-driven iris recognition; complex-valued networks

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In this paper, we design a fully complex-valued neural network specifically for iris recognition. By capturing both phase and magnitude information, our network outperforms real-valued networks in representing the biometric content of iris texture. The experiments on benchmark datasets show that our proposed network improves the performance of iris recognition when compared to traditional methods.
In this work, we design a fully complex-valued neural network for the task of iris recognition. Unlike the problem of general object recognition, where real-valued neural networks can be used to extract pertinent features, iris recognition depends on the extraction of both phase and magnitude information from the input iris texture in order to better represent its biometric content. This necessitates the extraction and processing of phase information that cannot be effectively handled by a real-valued neural network. In this regard, we design a fully complex-valued neural network that can better capture the multi-scale, multi-resolution, and multi-orientation phase and amplitude features of the iris texture. We show a strong correspondence of the proposed complex-valued iris recognition network with Gabor wavelets that are used to generate the classical IrisCode; however, the proposed method enables a new capability of automatic complex-valued feature learning that is tailored for iris recognition. We conduct experiments on three benchmark datasets - ND-CrossSensor-2013, CASIA-Iris-Thousand and UBIRIS.v2 - and show the benefit of the proposed network for the task of iris recognition. We exploit visualization schemes to convey how the complex-valued network, when compared to standard real-valued networks, extracts fundamentally different features from the iris texture.

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