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Binocular vision-based finger vein three-dimensional identification method and device

A technology of finger veins and binocular vision, applied in character and pattern recognition, instruments, computer components, etc.

Active Publication Date: 2011-02-23
NAT UNIV OF DEFENSE TECH
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AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of existing vein recognition, the present invention provides a method and device for three-dimensional recognition of finger veins based on binocular vision, using the principle of binocular vision to build a binocular collection platform for finger veins, combined with the SIFT operator and the principle of binocular vision Obtain 3D information of finger vein images, combine SIFT features and spatial distance to realize 3D recognition of finger veins, effectively improve the recognition rate and security level of finger vein recognition equipment

Method used

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  • Binocular vision-based finger vein three-dimensional identification method and device
  • Binocular vision-based finger vein three-dimensional identification method and device
  • Binocular vision-based finger vein three-dimensional identification method and device

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Embodiment Construction

[0063] figure 1 It is the structural diagram of the finger vein binocular acquisition platform. The binocular acquisition platform mainly includes an infrared light source, a light touch switch, two left and right cameras, an infrared filter, a power supply, an ARM interface board, and a DSP processing board. The two cameras are respectively located on both sides of the finger projection line, and the connection line between the left and right cameras is perpendicular to the finger projection line, and can basically bisect the finger projection line. Infrared filters are added to the lenses of the left and right cameras to filter out non-infrared light.

[0064] figure 2 It is the circuit connection diagram of the finger vein binocular acquisition platform. The power module is mainly used to supply power to the infrared light source, camera, ARM interface board, and DSP processing board; the ARM interface board mainly realizes the human-computer interaction function, recei...

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Abstract

The invention discloses a binocular vision-based finger vein three-dimensional identification method and a binocular vision-based finger vein three-dimensional identification device. The device mainly comprises an infrared light source, a light touch switch, a left camera, a right camera, infrared filters, a power supply, an advanced RISC machines (ARM) interface board and a digital signal processing (DSP) plate, wherein the infrared light source, a finger and the left camera and the right camera are positioned on three horizontal planes; the left camera and the right camera are positioned on the two sides of a finger projection line respectively; and the connecting line of the left camera and the right camera is vertical to the finger projection line. The method comprises the following steps of: if that the light touch switch is pressed is detected, operating the left camera and the right camera to acquire the binocular image of the finger, and extracting and matching the three-dimensional characteristics of finger veins based on the binocular vision principle and a scale invariant feature transform (SIFT) operator so as to realize the function of registering or identifying the finger. The method and the device effectively improve the identification rate and security level of finger vein identification equipment.

Description

technical field [0001] The invention mainly relates to a method and device for three-dimensional recognition of finger veins based on binocular vision. Background technique [0002] Finger vein recognition is a new generation of biometric identification technology. Its technical advantages mainly include: First, vein recognition has a high security level. Veins are hidden inside the body and are not easy to be copied or damaged. Only living bodies have veins, and their characteristics are not easy to steal; Second, there are large individual differences in vein characteristics, even twins with similar appearance have differences in veins, and this difference will not disappear during their lifetime; third, non-invasive and non-contact imaging based on infrared rays is used for vein identification technology, easy to use and clean; fourth, vein recognition is applicable to a wide range of people, everyone has veins, and vein features can be extracted. Based on the above adva...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/20
Inventor 谢剑斌刘通李沛秦闫玮谢昌颐
Owner NAT UNIV OF DEFENSE TECH
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