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Method and system for synthesizing twisted fingerprints

A synthesis method and fingerprint technology are applied in the field of synthesis methods and systems for twisted fingerprints, which can solve the problems of inconvenience, time-consuming, labor-intensive, and hardware costs, and achieve the effects of reducing hardware costs, lowering hardware costs, and saving labor.

Inactive Publication Date: 2017-04-19
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, in practical applications, directly collecting a large number of distorted fingerprints requires a lot of manpower and hardware costs, which is time-consuming and laborious, and extremely inconvenient

Method used

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  • Method and system for synthesizing twisted fingerprints
  • Method and system for synthesizing twisted fingerprints
  • Method and system for synthesizing twisted fingerprints

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Embodiment Construction

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0031] The method and system for synthesizing distorted fingerprints according to the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0032] figure 1 is a flowchart of a method for synthesizing twisted fingerprints according to an embodiment of the present invention. Such as figure 1 As shown, the synthetic method of twisted fingerprint according to one embodiment of the present invention comprises the following steps:

[0033] Step S101 , selecting a reference fingerprint an...

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Abstract

The invention provides a method for synthesizing distorted fingerprints. The method comprises the following steps that a reference fingerprint and a plurality of fingerprint pairs are selected, each fingerprint pair comprises a distorted fingerprint and a normal fingerprint corresponding to the distorted fingerprint, and the fingerprint pair is matched according to the reference fingerprint; distorted fields between the distorted fingerprints and the normal fingerprints corresponding to the distorted fingerprints are obtained according to the corresponding relations between the distorted fingerprints of the matched fingerprint pairs and minutiae of the normal fingerprints corresponding to the distorted fingerprints; a statistics model of the distorted fields is obtained according to the study on the distorted fields; by means of the statistics model of the distorted fields, the multiple distorted fingerprints correlated with the normal fingerprint assigned at will can be synthesized for the normal fingerprint assigned at will. According to the method, the distorted fingerprints can be efficiently, accurately and largely synthesized, and resource expense and cost can be reduced. The invention further provides a system for synthesizing distorted fingerprints.

Description

technical field [0001] The invention relates to the technical field of fingerprint identification, in particular to a method and system for synthesizing distorted fingerprints. Background technique [0002] In the information age, reliable and easy-to-use identification technology plays an extremely important role in national economy, national security and social stability. Due to the problems of loss, forgetting, forgery or cracking of traditional identification methods based on certificates and passwords, and poor reliability and ease of use, countries around the world are actively exploring fingerprint-based identification technologies. However, there are still many challenges in fingerprint recognition technology, especially low-quality fingerprint recognition, a typical representative of which is distorted fingerprint recognition. Distortions are caused by improper or deliberate user actions. Improper user operations are mainly seen in identity authentication systems....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00
Inventor 冯建江周杰司轩斌
Owner TSINGHUA UNIV
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