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Method for encrypting and identifying fingerprint pattern in fingerprint identification system

A technology of fingerprint image and encryption method, which is applied in the field of fingerprint image encryption and identification, can solve problems such as low computing speed, achieve the effect of safeguarding security interests and eliminating potential safety hazards

Inactive Publication Date: 2006-03-01
张英杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, even if the digital password is added, it does not bring the expected "insurance": this is because the conventional digital password can only maintain the low operation speed of even a pocket-sized decoder at most. Just a minute or two of short life

Method used

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Embodiment Construction

[0014] Design of the present invention originates from following thought:

[0015] For fingerprint images, people have always determined the individual characteristics of a fixed formula, that is, the orientation of the fingertip up or forward—or in two-dimensional space, the finger is on the y-axis, the fingertip is up or forward and the fingerprint The core is at the origin to determine, such as the direction of the fingerprint, the opening, the distinction between the left bucket pattern and the right skip pattern, etc. The fingerprint recognition system of current design is also like this, it seems that everyone's fingerprint feature is so fixed.

[0016] This is not the case. The fingerprint image as a geometric figure should have its inherent geometric properties: if the imaging angle of the fingerprint in the two-dimensional space is changed, then the same fingerprint will obtain completely different feature data, and even the original left and right and up and down or...

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Abstract

The present invention relates to a method for encryption and identification of fingerprint image in fingerprint identification system, in which the encryption method includes the following steps: input step, inputting characteristic fingerprint image on the fingerprint acquisition device of the described system by donor according to its selected imaging angle; extraction step, calculating the above-mentioned generated characteristic fingerprint image and extracting calculated characteristic data; and storage step, storing the above-mentioned characteristic data in the form of data module so as to implement encryption of fingerprint image.

Description

technical field [0001] The invention relates to a biometric identification technology, in particular to a method for encrypting and identifying fingerprint images in a fingerprint identification system. Background technique [0002] As far as the fingerprint identification system is concerned, the donor of the fingerprint can be divided into two categories: one is the passive type, that is, the fingerprints provided by the donor or collected are used to meet certain needs of other parties, such as the suspect Criminal investigation; the second is the active type, that is, the donor voluntarily requires the identification system to exclude unauthorized parties from passing through the system, so as to ensure the safety of the donor or the representative party of the donor. [0003] With the rapid development of modern technology, the above-mentioned passive fingerprint identification system has made great progress, no matter in terms of the number and accuracy of its comparis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06V40/13
CPCG09C5/00G06F21/32G06K9/00013G06K9/00885G06V40/13G06V40/10
Inventor 张英杰张明河
Owner 张英杰
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