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- W2213161453 abstract "We focus on the feature transform approach as one methodology for biometric template protection, where the template consists of the features extracted from the biometric trait. This paper considers some properties of the unitary transform-based template protection in particular. It is known that the Euclidean distance between the templates protected by a unitary transform is the same as that between original (non-protected) ones as a property. In this paper, moreover, it is shown that it provides the same results in l <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sub> -norm minimization problems as those of original templates. This means that there is no degradation of recognition performance in authentication systems using l <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sub> -norm minimization. Therefore, the protected templates can be reissued multiple times without original templates. In addition, a DFT-based template protection scheme is proposed as an unitary transform-based one. The proposed scheme enables to efficiently generate protected templates by the FFT, in addition to the useful properties. It is also applied to face recognition experiments to evaluate the effectiveness." @default.
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- W2213161453 date "2015-08-01" @default.
- W2213161453 modified "2023-09-24" @default.
- W2213161453 title "Unitary transform-based template protection and its properties" @default.
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- W2213161453 doi "https://doi.org/10.1109/eusipco.2015.7362819" @default.
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