Template matching of biometric object

A kind of object matching and biological technology, applied in the direction of matching and classification, character and pattern recognition, instruments, etc., to achieve the effect of low computing workload, low power consumption, and shortened delay

Active Publication Date: 2020-01-07
FINGERPRINT CARDS ANACATUM IP AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, such methods are computationally intensive (an

Method used

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  • Template matching of biometric object
  • Template matching of biometric object
  • Template matching of biometric object

Examples

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Embodiment Construction

[0054] Some embodiments of the present disclosure will be more fully described and illustrated hereinafter with reference to the accompanying drawings. However, the solutions disclosed herein may be implemented in many different forms and should not be construed as being limited to some of the embodiments set forth herein.

[0055] In the following exemplary description of embodiments, fingerprints are used to exemplify biometric objects. This is intended to be illustrative only, and by no means restrictive. Rather, problems and solutions according to some embodiments disclosed herein may be equally applicable to other biometric objects such as, but not limited to, palm prints, iris patterns, facial features, and the like.

[0056] According to some embodiments described herein, efficient (eg, in terms of delay and / or power consumption) multi-image matching methods are provided. According to some embodiments, the method can be said to take into account a trade-off between be...

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PUM

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Abstract

A biometric object matching method is disclosed. The method comprises capturing (210) a plurality of images of a single biometric object during a single activation of a biometric sensor and ranking (220) the images based on a ranking metric value of each of the images to determine a highest ranked image and at least one non-highest ranked image. The method also comprises comparing (230), in a first matching attempt for the biometric object, the highest ranked image to templates of a plurality of pre-stored biometric object templates, wherein a matching metric is determined for each compared template, and generating (270) a match indicating signal when it is determined (240) that at least one of the matching metrics exceeds amatching threshold value. Whenit is determined that none of the matching metrics exceed the matching threshold value,the method comprisescomparing (260), in a further matching attempt, one of the non- highest ranked images to templates of the plurality of templatesbased on the matching metrics. Corresponding arrangement, server node, systemand computer program product are also disclosed.

Description

technical field [0001] The present disclosure relates generally to the field of biometric recognition. More particularly, it relates to the matching of biometric objects to pre-stored templates. Background technique [0002] Many fingerprint capture processes are designed to ensure that a high-quality image is captured and based on that image a fingerprint match (also commonly referred to as fingerprinting, fingerprinting, etc.) is performed. [0003] Other strategies may be applied to capture multiple images during the time period extending from when the finger is detected by the sensor until the finger is lifted from the sensor or the maximum number of captured images is reached. [0004] Before each capture in any of these methods, various algorithms available to the skilled person may be applied as appropriate to provide a capture that meets some requirements (eg, with respect to image quality). [0005] When multiple images are captured during a single identification ...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06F18/00G06V10/98G06V40/12G06V40/13G06V40/50
CPCG06V40/1365G06V40/50G06V10/993G06V40/1312G06V40/1347
Inventor 莫滕·汉森克劳斯·S·安德森莫滕·詹森莫滕·威思彼得森
Owner FINGERPRINT CARDS ANACATUM IP AB
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