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Method for identifying multi-characteristic of fingerprint

A recognition method and multi-feature technology, applied in character and pattern recognition, instruments, computer parts, etc., can solve problems such as unsatisfactory improvement effect, application obstacles, and large storage space.

Inactive Publication Date: 2005-03-16
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among all available patents or published documents, those that are relatively close to the thinking of the present invention are: in (A.K.Jain, S.Prabhakar, L.Hong and S.Pankanti. Filterbank-based fingerprint matching.IEEE Trans.on Image Processing , Vol.9, 2000, pp:846-859), using the responses of multi-filters for encoding, using these encodings as features for fingerprint recognition, in (A.Ross, S.Prabhakar, and A.K.Jain.Fingerprint matching using minutiae and texture features.Proc.ICIP 2001,Vol.3,Greece,Oct 2001,pp 282-285) adopts the code similar to the above-mentioned idea plus detail point information for fingerprint recognition, and has achieved certain results, but the problem It requires a very large storage space, causing obstacles to application
The improvement effect is not very ideal

Method used

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  • Method for identifying multi-characteristic of fingerprint
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  • Method for identifying multi-characteristic of fingerprint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0174] Our invention has been implemented on ordinary PC computers, and there is no requirement for the operating system.

[0175] The present invention is characterized in that it contains the following two stages in sequence:

[0176] In the registration stage, the computer performs feature extraction and storage for all registered fingerprints in an offline state. This stage contains the following steps in turn:

[0177] (1). Initialize the computer:

[0178] Setup: Fingerprints are represented by the following multi-features:

[0179] A singularity, that is, a point where the direction field is discontinuous, contains:

[0180] Center point: less than three;

[0181] Triangular points: less than three;

[0182] The X coordinate and Y coordinate of the singular point are stored in one byte each, a total of 12 bytes;

[0183] Minutiae, including its X, Y coordinates and direction angle, each minutiae is represented by 3 bytes, if the number of minutiae is less than 100,...

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Abstract

The invention relates to a fingerprint multiple characteristics identification method, which belongs to the fingerprint identification technique field. Its characteristic is shown as follows. The method combines the conventional detail point characteristic with the directional diagram model parameters to give the fingerprint identification characteristic. At the same time, combines the directional diagram comparison result with the conventional detail point comparison result to improve the identification rate. The method is applicable, especially to the large human populations or the poor quality human populations with memory saving.

Description

technical field [0001] The invention relates to the technical field of fingerprint recognition, in particular to a technology for simultaneously fusing direction pattern features and minutiae features for recognition. Background technique [0002] With the development and progress of society, the practical requirements for fast, effective and automatic personal identification are increasingly urgent. Security of important departments, border control, immigration inspection, entry and exit of confidential or valuables storage places, prevention of credit card fraud, network security, etc. Reliable personal identification is required. In the basis of identity verification, keys and certificates may be lost, stolen or copied, and passwords are easily forgotten, confused or peeped, and biometrics (including fingerprints, faces, hand shapes, handwritten signatures, irises, etc.) The above-mentioned situation will not occur due to the inherent attributes of people, so it becomes ...

Claims

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Application Information

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IPC IPC(8): G06K9/00
Inventor 周杰顾金伟万定锐
Owner TSINGHUA UNIV
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