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Finger vein recognition technology based on vein direction detection

A recognition technology, a finger vein technology, is applied in the field of finger vein recognition technology based on pulse direction detection, and can solve problems such as the inability to use fingerprint authentication

Inactive Publication Date: 2016-12-21
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, fingerprint identification also has its own disadvantages: (1) the widespread use of the criminal fingerprint database of the automatic fingerprint identification system in global judicial practice makes people wary of it; (3) Some users cannot use fingerprint authentication due to fingerprint grinding.

Method used

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  • Finger vein recognition technology based on vein direction detection
  • Finger vein recognition technology based on vein direction detection
  • Finger vein recognition technology based on vein direction detection

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Experimental program
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Embodiment Construction

[0039] The simulation is carried out under the environment of matlab2014a below, and the present invention is further described in detail in conjunction with the accompanying drawings and embodiments.

[0040] This embodiment refers to the original image of the vein as figure 1 shown.

[0041] Step 1. Convert the original image of the embodiment into a grayscale image, and then perform median filtering.

[0042] Step 2, using the sobel operator to extract the edge of the image.

[0043] Step 3. Perform Hough line detection on the image, and then take the two closest lines among the detected lines as the two edges of the image to obtain the width of the image; then take the two points with the longest horizontal distance of all lines as Tangent, get the length of the image. In order to obtain the region of interest of the image, such as figure 2 shown.

[0044] Step 4, normalize the image.

[0045] Step 5, performing histogram equalization to enhance the image effect.

...

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Abstract

The invention belongs to the field of biological characteristic recognition, and particularly relates to a finger vein recognition technology based on vein direction detection. According to the finger vein recognition technology, after a target image is preprocessed, vein lines of fingers are detected by employing direction operators, and corresponding operations all can be carried out on veins at different directions; and then, threshold segmentation is carried out on a new image which is processed by the operators. The finger vein recognition technology can carry out the vein direction detection on different finger vein images, thereby obtaining the best segmentation threshold and getting the clear target image for characteristic extraction and matching.

Description

technical field [0001] The invention belongs to the field of biological feature identification, and in particular relates to a finger vein identification technology based on pulse direction detection. Background technique [0002] With the rapid development of Internet technology in today's society, people's lives are closely connected with the Internet, and information security has shown unprecedented importance. In financial, national security, judicial, e-commerce, e-government and other application fields, accurate identification is required, so identification is a necessary link to ensure system security. Current personal identification mainly relies on ID cards (such as ID cards, work permits, smart cards, computer identification cards and savings cards, etc.) and passwords. However, these means are inconvenient to carry, are easy to miss, or are damaged due to excessive or improper use, unreadable and leaked passwords. Therefore, the traditional identity authenticat...

Claims

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Application Information

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IPC IPC(8): G06K9/00
CPCG06V40/10G06V40/14
Inventor 肖鸿博吕幼新王新磊王俊
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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