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Finger vein feature template protection method and device

A feature template and finger vein technology, applied in digital data protection, computer security devices, character and pattern recognition, etc., can solve the problem of low confidentiality, achieve the effect of ensuring accuracy, improving irreversibility, and stabilizing recognition performance

Active Publication Date: 2021-06-25
ANHUI UNIVERSITY
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Problems solved by technology

[0005] The purpose of the embodiment of the present invention is to provide a finger vein feature template protection method, aiming to solve the problem of low confidentiality

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  • Finger vein feature template protection method and device
  • Finger vein feature template protection method and device
  • Finger vein feature template protection method and device

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0031] The specific implementation of the present invention will be described in detail below in conjunction with specific embodiments.

[0032] Such as figure 1 As shown, a finger vein feature template protection method provided in an embodiment of the present invention, the finger vein feature template protection method includes:

[0033] S1. Expand the original vector and the converted original eigenvector respectively to obtain the eigenvector x∈R hn with

[0034] S2. Merge and preprocess the expanded original vector and the transformed original vector to obtain a multidimensional biometri...

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Abstract

The invention is suitable for the technical field of biological feature recognition, and provides a finger vein feature template protection method and device. The method comprises the steps: S1, carrying out the column expansion of an original vector and a converted original feature vector, and obtaining a feature vector sum x < Rhn; S2, carrying out merging preprocessing on the expanded original vector and the converted original vector, and obtaining a multi-dimensional biological characteristic matrix; S3, generating a double-Gaussian random projection matrix and orthogonally converting the double-Gaussian random projection matrix into a double-Gaussian random orthogonal projection matrix as an external factor; S4, combining the feature matrix with a double-Gaussian random orthogonal projection matrix for operation, and expanding the connection to obtain a one-dimensional processing vector; S5, performing irreversible transformation on the one-dimensional processing vector to obtain a hash code; and S6, calculating the similarity of the hash codes by adopting a cross matching mode. The method has the advantages of being stable in recognition performance, high in irreversibility, good in privacy and high in safety.

Description

technical field [0001] The invention belongs to the technical field of biological feature recognition, and in particular relates to a method and a device for protecting a finger vein feature template. Background technique [0002] With the rapid development of artificial intelligence, due to the shortcomings of traditional identity verification, biometric authentication systems have developed rapidly. The biometric template used to identify the identity in the biometric technology may be stolen, thereby leaking privacy and threatening the security of users. And biometrics are non-renewable, once stolen, user losses cannot be recovered. In recent years, in order to protect the security of biometric information, the privacy protection of biometrics has become a hot research issue. The research work mainly focuses on template protection and anti-fraud, and the template protection of biometric identification is the main research direction. Template protection problems fall in...

Claims

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Application Information

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IPC IPC(8): G06K9/62G06F21/60G06F21/62G06F21/64
CPCG06F21/602G06F21/6245G06F21/64G06F18/22G06F18/213
Inventor 王华彬张丽萍兰江浩李诚李鑫吴云志张忠帝王旭东成鸿儒陶亮
Owner ANHUI UNIVERSITY