Finger vein recognition method based on multi-angle imaging

A finger vein and recognition method technology, which is applied in biometric recognition, character and pattern recognition, fingerprint/palmprint acquisition/organization, etc., can solve the problems of poor edge imaging effect, loss, and high probability of vein recognition mismatching, and achieve strong Robustness, good correction effect, and effect of improving recognition rate

Active Publication Date: 2020-06-19
CHONGQING UNIV
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

Due to the abundant blood vessels in finger veins, this method will lead to the problem of easy loss of information on the side of finger veins, poor edge

Method used

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  • Finger vein recognition method based on multi-angle imaging
  • Finger vein recognition method based on multi-angle imaging
  • Finger vein recognition method based on multi-angle imaging

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Embodiment Construction

[0059] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0060] Such as figure 1 As shown, the present invention discloses a finger vein recognition method based on multi-angle imaging, including:

[0061] S1, rotate and shoot the finger to obtain a 360-degree finger image;

[0062] In the present invention, the CMOS camera can be used to collect images, and a group of infrared LED light bars are set at the position facing the camera to emit infrared rays. During the collection process, the 360-degree image collection can be realized through the rotation of the device. Take one image at a time. Specifically, the horizontal position of the camera on the right side can be used as the starting position, and the photos taken at this time can be defined as 0-degree photos, and the device can be rotated counterclockwise to take photos.

[0063] S2. Select the finger vein image to be processed from the 360-degree finge...

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Abstract

The invention discloses a finger vein recognition method based on multi-angle imaging. The finger vein recognition method comprises the steps that a finger is rotated and photographed to obtain a 360-degree finger image; selecting a to-be-processed finger vein image from the 360-degree finger image, the to-be-processed finger vein image comprising an image right above the finger and an image rightbelow the finger, and further comprising images rotating forward and backward by a preset angle relative to the image right above the finger and the image right below the finger; extracting an ROI region from the finger vein image to be processed by adopting a sliding window method; enhancing the ROI region to obtain a to-be-identified image; extracting to-be-identified features from the to-be-identified image; mATCHING IDENTIFICATION OF FEATURES. Effective feature extraction and fusion are carried out on multi-angle finger vein information, more finger vein useful information is fully utilized, and the finger vein recognition rate is improved; and the problem that the finger vein recognition rate is reduced due to axial rotation of the finger is solved, the problem of axial rotation of the finger vein is effectively solved, and high robustness is achieved.

Description

technical field [0001] The invention relates to the field of image detection, in particular to a finger vein recognition method based on multi-angle imaging. Background technique [0002] Finger vein recognition technology is the use of near-infrared rays to penetrate the vein pattern image obtained after the finger for personal identification. It is the world's most cutting-edge biometric technology with high precision and high speed. Among various biometric identification technologies, it is attracting attention as a second-generation biometric identification technology with high anti-counterfeiting because it is a technology for identification using internal biological characteristics that cannot be seen from the outside. At present, it is widely used in public domain authentication equipment such as membership identification machine, bank ATM machine, access control management system, PC login, instead of car lock, safe management, copier management, electronic payment a...

Claims

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Application Information

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IPC IPC(8): G06K9/00
CPCG06V40/1347G06V40/1365G06V40/14
Inventor 黄扬帆余江鹏张灿灿李博甘平张小松
Owner CHONGQING UNIV
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