Finger vein recognition device and method with living body finger detection function

A finger vein and identification device technology, applied in character and pattern recognition, instruments, catheters, etc., can solve the problem of cheating the finger vein identification device, and achieve the effect of improving reliability

Active Publication Date: 2014-03-05
GUANGZHOU WEDONETECH TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even for finger vein recognition devices that are at the forefront of biometric authentication technology, counterfeiters ma

Method used

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  • Finger vein recognition device and method with living body finger detection function
  • Finger vein recognition device and method with living body finger detection function
  • Finger vein recognition device and method with living body finger detection function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as Figure 1 to Figure 3 As shown, a finger vein recognition device with a living finger detection function, the finger vein recognition device includes a guide groove 101 located in the middle for guiding the placement position of the finger 200; the bottom of the guide groove 101 is a finger placement platform; It also includes a near-infrared lamp group 102 arranged in both sides of the guide groove 101 wall; a light-condensing assembly 103 for adjusting the light irradiation angle of the near-infrared lamp group 102 is provided in front of the near-infrared lamp group 102; The light-transmitting part that the camera 104 at the center of the platform can photograph is the camera window 105; between the camera of the camera 104 and the camera window 105, an optical filter 106 for filtering ambient light and the influence of stray light is arranged; An infrared pulse wave detection sensor 108 for detecting the fingertip and an infrared pulse wave detection sensor ...

Embodiment 2

[0028] Such as Figure 4 to Figure 6 As shown, the difference between the device of this embodiment and Embodiment 1 is that it is only provided with a group of near-infrared lamps 102 on the wall of a guide groove, and at the same time it is only provided with one end corresponding to the fingertip on the longitudinal midline of the finger placement platform. An infrared pulse wave detection sensor 108; the control module 107 only uses this unique infrared pulse wave detection sensor 108 to judge whether it is a living finger, and the other identification processing methods of the control module 107 are the same as those in the first embodiment.

Embodiment 3

[0030] Such as Figure 7 to Figure 9 As shown, the difference between the device of this embodiment and Embodiment 1 is that it is only provided with a group of near-infrared light lamps 102 directly above the guide groove 101, and at the same time it is only located directly below the longitudinal midline of the finger placement platform. One side of the imaging device 104 is provided with an infrared pulse wave detection sensor 108 for detecting the finger pulp, and the control module 107 only judges whether a live finger is through the unique infrared pulse wave detection sensor 108. Other identification processing methods of the control module 107 Same as Embodiment 1.

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Abstract

The invention discloses a finger vein recognition device and method with the living body finger detection function. The device comprises a near-infrared light lamp bank arranged around a finger and further comprises a guide groove located in the middle of the device and guiding the placement position of the finger. A finger placement platform is arranged at the bottom of the guide groove. A camera device for photographing veins is arranged on the lower portion of the platform. A camera window is arranged in the center of the finger placement platform. An optical filter is arranged between a camera of the camera device and the camera window. An infrared pulse wave detection sensor is arranged on or below the finger placement platform. A control module is further arranged in the device, wherein the control module is used for controlling the photographing process, processing photographed data and processing data detected by the infrared pulse wave detection sensor. According to the device and method, pulse waves are detected through the infrared pulse wave detection sensor arranged in the device, then, whether a test object has a living body finger or not is judged, and thus the reliability of finger vein recognition is improved.

Description

technical field [0001] The invention relates to a biological feature identification device and method, in particular to a finger vein identification device and method. Background technique [0002] With the increasingly widespread application of biometric technology, the phenomenon of counterfeit biometrics has also begun to increase. Even for finger vein recognition devices that are at the forefront of biometric authentication technology, counterfeiters may use special materials that absorb near-infrared rays to forge finger vein patterns to fool finger vein recognition devices. Contents of the invention [0003] The object of the present invention is to avoid the deficiencies in the prior art and provide a finger vein recognition device and method that improve the reliability of finger vein recognition technology. Technical scheme of the present invention has utilized following principle: [0004] The periodic contraction and relaxation of the human heart leads to the ...

Claims

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Application Information

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IPC IPC(8): G06K9/00A61B5/02
Inventor 肖金镰
Owner GUANGZHOU WEDONETECH TECH CO LTD
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