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dc.contributor.authorAlinia Lat, R-
dc.contributor.authorDanishvar, S-
dc.contributor.authorHeravi, H-
dc.contributor.authorDanishvar, M-
dc.identifier.citationAlinia Lat, R., Danishvar, S., Heravi, H. and Danishvar, M. (2022) ‘Boosting Iris Recognition by Margin-Based Loss Functions’, Algorithms, 15 (4), 118, pp. 1-13. doi: 10.3390/a15040118.en_US
dc.descriptionData Availability Statement: The analysed datasets are publicly available. Related references are reported in the References section. Acknowledgments: The authors would like to thank Guowei Wang for providing the implementation of Keras_insightface, which is available on Github, accessed on April 2021 ( leondgarse/Keras_insightface/ access on 25 April 2021).en_US
dc.description.abstractCopyright: © 2022 by the authors. In recent years, the topic of contactless biometric identification has gained considerable traction due to the COVID-19 pandemic. One of the most well-known identification technologies is iris recognition. Determining the classification threshold for large datasets of iris images remains challenging. To solve this issue, it is essential to extract more discriminatory features from iris images. Choosing the appropriate loss function to enhance discrimination power is one of the most significant factors in deep learning networks. This paper proposes a novel iris identification framework that integrates the light-weight MobileNet architecture with customized ArcFace and Triplet loss functions. By combining two loss functions, it is possible to improve the compactness within a class and the discrepancies between classes. To reduce the amount of preprocessing, the normalization step is omitted and segmented iris images are used directly. In contrast to the original SoftMax loss, the EER for the combined loss from ArcFace and Triplet is decreased from 1.11% to 0.45%, and the TPR is increased from 99.77% to 100%. In CASIA-Iris-Thousand, EER decreased from 4.8% to 1.87%, while TPR improved from 97.42% to 99.66%. Experiments have demonstrated that the proposed approach with customized loss using ArcFace and Triplet can significantly improve state-of-the-art and achieve outstanding results.en_US
dc.description.sponsorshipThis research received no external funding.en_US
dc.format.extent1 - 13-
dc.publisherMDPI AGen_US
dc.rightsCopyright: © 2022 by the authors. Licensee MDPI, Basel, Switzerland. This is an open access article distributed under the Creative Commons Attribution License ( which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited-
dc.subjectmachine learningen_US
dc.subjectconvolutional neural networksen_US
dc.subjectdeep learningen_US
dc.subjectiris recognitionen_US
dc.subjectmargin-based loss functionsen_US
dc.titleBoosting Iris Recognition by Margin-Based Loss Functionsen_US
pubs.publication-statusPublished online-
Appears in Collections:Dept of Mechanical and Aerospace Engineering Research Papers

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