Fast, high-accuracy, large-scale fingerprint verification system

    公开(公告)号:US10002285B2

    公开(公告)日:2018-06-19

    申请号:US14866259

    申请日:2015-09-25

    IPC分类号: G06K9/00

    摘要: Apparatuses, systems, and techniques are disclosed for rapidly identifying potential candidates within a pool of enrolled fingerprint images for unconstrained fingerprint matching with an inquiry fingerprint. The techniques may include applying one or more window regions to both enrolled and inquiry fingerprint images and determining a minutiae score for each such window region based on the minutiae within that window region. One or more components of the minutiae score for window regions of the inquiry image may then be compared against similar components in the minutiae scores for window regions of the enrolled fingerprint images, and enrolled fingerprint images having window regions with minutiae scores sufficiently similar to the minutiae score of a window region of the inquiry fingerprint image may be selected for later unconstrained matching with the inquiry fingerprint image.

    Methods of storing a set of biometric data templates and of matching biometrics, biometric matching apparatus and computer program

    公开(公告)号:US09996723B2

    公开(公告)日:2018-06-12

    申请号:US15110289

    申请日:2014-12-09

    IPC分类号: G06K9/00 G06F21/32 G06F17/30

    摘要: There is provided a method of storing a set of biometric data templates, which emanates from a biometric object, among a plurality of biometric data templates, wherein each biometric data template comprises biometric data from only a part of a biometric object. The method comprises aligning biometric data templates with each other in view of the biometric object of the plurality of biometric data templates which comprises partially overlapping biometric data with at least one other biometric data template; determining the set of biometric data templates to be stored; and storing the set of biometric data templates. The determining of the set of biometric data templates to be stored comprises assigning a matrix of cells covering at least partially the aligned biometric data templates; determining, for each of the aligned biometric data templates, cells comprising distinguishable biometric data; and determining a combination of biometric data templates which comprises an amount of cells comprising distinguishable biometric data which fulfil a predetermined criterion. A method of biometric matching is also disclosed, and also a biometric matching apparatus and a computer program.

    Fingerprint verification system
    8.
    发明授权

    公开(公告)号:US09971928B2

    公开(公告)日:2018-05-15

    申请号:US14941273

    申请日:2015-11-13

    IPC分类号: G06K9/00 G06K9/62

    摘要: Embodiments of apparatus, computer program product, and method for verifying fingerprint images are disclosed. In one embodiment, a method of verifying fingerprint images includes receiving an inquiry fingerprint image of a user, identifying pattern characteristics of the inquiry fingerprint image, identifying minutiae characteristics of the inquiry fingerprint image, determining a weighted combination of the pattern characteristics of the inquiry fingerprint image and the minutiae characteristics of the inquiry fingerprint image, where the weighted combination comprises a pattern matching weight and a minutiae matching weight derived in accordance with a separation of a first empirical probability density function of genuine fingerprints from a second empirical probability density function of impostor fingerprints, and verifying the inquiry fingerprint image based on a set of fused scores computed using the weighted combination of the pattern characteristics of the inquiry fingerprint image and the minutiae characteristics of the inquiry fingerprint image.