Secure registration-free fingerprint authentication method and system based on local features
AssigneeInstitute of Automation, Chinese Academy of Sciences
InventorsJie Tian, Xin Yang, Peng Li
Life of this patent
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Abstract
A secure registration-free fingerprint authentication method based on local structures comprising: extracting descriptor features and local structure features of fingerprint minutiae from an input fingerprint image; conducting quantization and feature selection with respect to the features of the fingerprint minutiae; and encrypting the selected features and then decrypting the encrypted features to obtain the fingerprint image. The method adopts local features for fingerprint authentication, thus avoiding the complex registration in encryption domain. The method lowers the risk of the fingerprint authentication being attacked and improves security.
Claims20
A secure registration-free fingerprint authentication method based on local structures, comprising:
- extracting descriptor features and local structure features of fingerprint minutiae from an input fingerprint image;
- conducting quantization and feature selection with respect to the features of the fingerprint minutiae;
- and
- encrypting the selected features and then decrypting the encrypted features to obtain the fingerprint image.
A secure registration-free fingerprint authentication system based on local structures, comprising:
- a feature extraction unit configured to extract descriptor features and local structure features of fingerprint minutiae from an input fingerprint image;
- a quantization and feature selection unit configured to conduct quantization and feature selection with respect to the features of the fingerprint minutiae;
- and
- an encryption and decryption unit configured to encrypt the selected features and then decrypt the encrypted features to obtain the fingerprint image.
Dependencies are inferred from the claim text.