CN109446874A - A kind of finger venous collection identifying system - Google Patents
A kind of finger venous collection identifying system Download PDFInfo
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- CN109446874A CN109446874A CN201810987565.1A CN201810987565A CN109446874A CN 109446874 A CN109446874 A CN 109446874A CN 201810987565 A CN201810987565 A CN 201810987565A CN 109446874 A CN109446874 A CN 109446874A
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- finger
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/10—Image acquisition
- G06V10/12—Details of acquisition arrangements; Constructional details thereof
- G06V10/14—Optical characteristics of the device performing the acquisition or on the illumination arrangements
- G06V10/147—Details of sensors, e.g. sensor lenses
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/14—Vascular patterns
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- Theoretical Computer Science (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Human Computer Interaction (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The present invention relates to a kind of finger venous collection identifying system, including control unit and camera connected to it, infrared tube and host computer, host computer is connected with server, and server refers to vein pattern information bank for storing finger vein features information to be formed；Infrared tube is used to emit the near-infrared light waves of irradiation finger, and camera face infrared tube is arranged and is used to acquire the finger after near-infrared light waves are irradiated to acquire original finger venous image；Host computer is for handling to obtain finger vein features information the original finger venous image that control unit is transmitted, host computer carries out matching treatment to existing finger vein features information in the finger vein features information and finger vein pattern information bank of acquisition, to complete identification.The original finger venous image of host computer processing acquisition is matched to obtain finger vein features information, then by it with existing finger vein features information in finger vein pattern information bank, and to complete identification, and the fast precision of recognition speed is high.
Description
Technical field
The present invention relates to venous collection identification technology field is referred to, more particularly, to a kind of finger venous collection identifying system.
Background technique
With the arrival of information age, the safety of information and confidentiality cause the universal great attention of people.Mesh
Before, fingerprint identification technology is one of comparative maturity in biometrics identification technology for the identification technologies such as iris, face
Kind of identity identifying technology, but its have the shortcomings that it is some inevitable, as finger is overly moist, overdrying or finger decortication equivalent damage occurs
When or finger have dirt etc. that can all influence recognition effect.Refer to that vein identification technology is a kind of biometrics identification technology, its benefit
Identification is carried out with the vein distributed image in finger, which can overcome shortcomings above completely, so that identity
It authenticates more convenient.Therefore, it is most important to study a kind of system for integrating finger venous collection and identifying.
Summary of the invention
It is an object of the invention to overcome the shortcomings of existing identity recognizing technology, a kind of finger venous collection identification system is provided
System, can identify rapidly and accurately identity.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
A kind of finger venous collection identifying system is provided, including control unit and camera connected to it, infrared tube and
Host computer, host computer are connected with server, and server refers to vein pattern information for storing finger vein features information to be formed
Library；Infrared tube is used to emit the near-infrared light waves of irradiation finger, and camera face infrared tube is arranged and is used to acquire through close
Finger after infrared waves irradiation is to acquire original finger venous image；Host computer is used for the original finger transmitted to control unit
Vein image is handled to obtain finger vein features information, finger vein features information and finger vein of the host computer to acquisition
Existing finger vein features information carries out matching treatment in characteristic information library, to complete identification.
The hemoglobin flowed in transvenous red blood cell has near-infrared light waves of the wavelength near 700-1000 nanometers
Absorption causes near-infrared light waves less in the transmission of vein segment, and after near-infrared light waves transmission, vein is in camera
It will be highlighted on the image of shooting, and finger muscles, bone and other parts are all weakened, to obtain clearly original
Finger venous image.
Infrared tube is multiband LED array, the near-infrared light waves of 700-1000 nanometers of transmitting.
The processing for the original finger venous image that host computer transmits control unit includes pretreatment and feature extraction.Pre- place
Reason: framing and finger-image intercepting process are carried out, to obtain standardized finger vein image, to standardized finger vein figure
As carrying out size normalization and gray scale normalization processing.Feature extraction: size normalization and gray scale normalization treated refer to it is quiet
Arteries and veins image reuses Mean Method, OTSU method, iterative method or NiBlack method and carries out feature extraction to obtain finger vein features
Information.These processing belong to the prior art, are not described in detail herein.
The matching treatment of finger vein features information uses the method for template matching or the side based on multiple characteristics identification
Method.These processing belong to the prior art, are not described in detail herein.
In above scheme, after finger to be placed in the irradiated region of infrared tube, original finger vena is acquired using camera
Image, and using host computer to acquisition finger vein features information after the processing of original finger venous image, then the finger that will acquire
Existing finger vein features information carries out matching treatment in vein pattern information and finger vein pattern information bank, if successful match
It then can successfully identify identity, illustrate that the finger vein features information of the identity is not referring to vein pattern information bank if it fails to match
Interior, this refers to that the fast precision of speed of venous collection identifying system identification is high.
It preferably, further include the infrared sensor being connect with control unit, in the irradiated region for detecting near-infrared light waves
Whether finger placement is had.Setting prevents from not including in collected original finger venous image or believe comprising less finger in this way
Breath, and then influence recognition result.
It preferably, further include emphasizing section circuit module for connecting the infrared emission light of infrared tube and control unit；Control
Unit processed obtains finger thickness to the original finger venous image processing that camera acquires, and controls infrared hair according to finger thickness
Light intensity regulating circuit module is penetrated to adjust the intensity of the near-infrared light waves of infrared tube transmitting.The thickness difference of finger needs close
The power of infrared waves is different, if the intensity of near-infrared light waves is fixed and invariable, it is possible that overexposure or
Dark situation is crossed, the quality of the original finger venous image of acquisition is influenced.
It preferably, further include the display module being connect with control unit, the original finger for showing camera acquisition is quiet
Arteries and veins image.In this way convenient for the quality of the original finger venous image of user's real time inspection acquisition, convenient for not conforming in picture quality
It is resurveyed when lattice, in order to avoid influence recognition result.
It is further preferred that display module is LCD display module.LCD display module high resolution, is adopted convenient for clearly showing
The original finger venous image of collection.
Preferably, display module is touch screen；It is equipped in host computer and needs archive module and need to identify module；It needs to deposit
The finger vein features information that shelves module is used to will acquire, which is directly stored in, to be referred in vein pattern information bank；Need to identify that module will
Existing finger vein features information carries out matching treatment in the finger vein features information and finger vein pattern information bank of acquisition,
To complete identification；Archive module can be needed by touch screen selection or need to identify module.Touch screen realizes human-computer interaction,
User is actively selected, refers to vein pattern information bank when needing the finger vein features information by someone to be stored in
When interior, then selection needs archive module, and when needing to carry out identification, then selection needs to identify module, meets the need of user
It asks.
Preferably, camera includes cmos imaging device and the infrared fileter for ending visible light wave, and light wave is through red
Enter cmos imager part after outer optical filter.The vein letter for including in the original finger venous image that can guarantee acquisition is set in this way
Breath protrudes, and finger muscles, bone and other parts are all weakened.
Preferably, control unit is connect by USB or WIFI module with host computer；Host computer passes through WIFI module and service
Device connection.Setting can guarantee transmission speed in this way.
Preferably, host computer is computer, and control unit is STM32F407ZET6 chip.
Compared with prior art, the beneficial effects of the present invention are:
A kind of finger venous collection identifying system of the present invention utilizes camera shooting after finger to be placed in the irradiated region of infrared tube
Head acquires original finger venous image, and is believed using host computer acquisition finger vein features after the processing of original finger venous image
Breath, then the finger vein features information and finger vein features information progress existing in finger vein pattern information bank that will acquire
With processing, identity can be successfully identified if successful match, illustrate the finger vein features information of the identity not if it fails to match
Referring in vein pattern information bank, this refers to that the fast precision of speed of venous collection identifying system identification is high.
Detailed description of the invention
Fig. 1 is a kind of schematic block diagram for referring to venous collection identifying system of the present embodiment；
Fig. 2 is the placement relation schematic diagram of finger and camera, infrared tube when acquiring original finger venous image；
Fig. 3 is to acquire original finger venous image schematic diagram；
Fig. 4 is the finger vein features information schematic diagram obtained after handling；
Fig. 5 is process flow diagram of the host computer to original finger venous image.
Specific embodiment
The present invention is further illustrated With reference to embodiment.Wherein, attached drawing only for illustration,
What is indicated is only schematic diagram, rather than pictorial diagram, should not be understood as the limitation to this patent；Reality in order to better illustrate the present invention
Example is applied, the certain components of attached drawing have omission, zoom in or out, and do not represent the size of actual product；To those skilled in the art
For, the omitting of some known structures and their instructions in the attached drawings are understandable.
The same or similar label correspond to the same or similar components in the attached drawing of the embodiment of the present invention；It is retouched in of the invention
In stating, it is to be understood that if the orientation or positional relationship for having the instructions such as term " on ", "lower", "left", "right" is based on attached drawing
Shown in orientation or positional relationship, be merely for convenience of description of the present invention and simplification of the description, rather than indication or suggestion is signified
Device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore positional relationship is described in attached drawing
Term only for illustration, should not be understood as the limitation to this patent, for the ordinary skill in the art, can
To understand the concrete meaning of above-mentioned term as the case may be.
Embodiment
A kind of finger venous collection identifying system of the present embodiment, as shown in Figure 1, including control unit and camera shooting connected to it
Head, infrared tube and host computer, host computer are connected with server, and server is referred to for storing finger vein features information with being formed
Vein pattern information bank；Infrared tube is used to emit the near-infrared light waves of irradiation finger, and camera face infrared tube is arranged simultaneously
For acquiring the finger after near-infrared light waves are irradiated to acquire original finger venous image；Host computer is used to pass control unit
Defeated original finger venous image is handled to obtain finger vein features information, finger vein features of the host computer to acquisition
Existing finger vein features information carries out matching treatment in information and finger vein pattern information bank, to complete identification.
As shown in Fig. 2, palm to be placed in the irradiated region of infrared tube, the hemoglobin pair in transvenous red blood cell is flowed
Near-infrared light waves of the wavelength near 700-1000 nanometers have absorption, cause near-infrared light waves in the transmission of vein segment
Less, after near-infrared light waves transmission, vein will highlight on the image that camera is shot, and finger muscles, bone
Bone and other parts are all weakened, to obtain clearly original finger venous image, as shown in Figure 3.
Infrared tube is multiband LED array, the near-infrared light waves of 700-1000 nanometers of transmitting.
The processing for the original finger venous image that host computer transmits control unit includes pretreatment and feature extraction.Pre- place
Reason: framing and finger-image intercepting process are carried out, to obtain standardized finger vein image, to standardized finger vein figure
As carrying out size normalization and gray scale normalization processing.Feature extraction: size normalization and gray scale normalization treated refer to it is quiet
Arteries and veins image reuses Mean Method, OTSU method, iterative method or NiBlack method and carries out feature extraction to obtain finger vein features
Information is illustrated in figure 4 the finger vein features information schematic diagram of acquisition.These processing belong to the prior art, herein no longer in detail
Thin description.
The matching treatment of finger vein features information uses the method for template matching or the side based on multiple characteristics identification
Method.These processing belong to the prior art, are not described in detail herein.
After finger to be placed in the irradiated region of infrared tube, original finger venous image is acquired using camera, and utilize
Host computer is to acquisition finger vein features information after the processing of original finger venous image, then the finger vein features information that will acquire
Matching treatment is carried out with existing finger vein features information in finger vein pattern information bank, can successfully be identified if successful match
Identity illustrates that the finger vein features information of the identity is not referring in vein pattern information bank that this refers to vein if it fails to match
The fast precision of speed for acquiring identifying system identification is high.
Wherein, further include the infrared sensor being connect with control unit, be in the irradiated region for detecting near-infrared light waves
It is no to have finger placement.Setting prevents from not including in collected original finger venous image or believe comprising less finger in this way
Breath, and then influence recognition result.
In addition, further including emphasizing section circuit module for connecting the infrared emission light of infrared tube and control unit；Control
Unit obtains finger thickness to the original finger venous image processing that camera acquires, and controls infrared emission according to finger thickness
Light intensity regulating circuit module with adjust infrared tube transmitting near-infrared light waves intensity.The thickness difference of finger needs close red
The power of outer light wave is different, if the intensity of near-infrared light waves is fixed and invariable, it is possible that overexposure or mistake
Dark situation influences the quality of the original finger venous image of acquisition.
It wherein, further include the display module being connect with control unit, for showing the original finger vena of camera acquisition
Image.In this way convenient for the quality of the original finger venous image of user's real time inspection acquisition, convenient for unqualified in picture quality
When resurvey, in order to avoid influence recognition result.
In the present embodiment, display module is LCD display module.LCD display module high resolution, convenient for clear display acquisition
Original finger venous image.
In addition, display module is touch screen；It is equipped in host computer and needs archive module and need to identify module；It needs to achieve
The finger vein features information that module is used to will acquire, which is directly stored in, to be referred in vein pattern information bank；Need to identify that module will obtain
Existing finger vein features information carries out matching treatment in the finger vein features information and finger vein pattern information bank taken, with
Complete identification；Archive module can be needed by touch screen selection or need to identify module.Touch screen realizes human-computer interaction, makes
Obtaining user can actively select, and refer in vein pattern information bank when needing the finger vein features information by someone to be stored in
When, then selection needs archive module, and when needing to carry out identification, then selection needs to identify module, meets the need of user
It asks, is illustrated in figure 5 process flow diagram when selection needs archive module or needs to identify module respectively.
Wherein, camera includes cmos imaging device and the infrared fileter for ending visible light wave, and light wave is through infrared
Enter cmos imager part after optical filter.The venous information for including in the original finger venous image that can guarantee acquisition is set in this way
It is prominent, and finger muscles, bone and other parts are all weakened.
In addition, control unit is connect by USB or WIFI module with host computer；Host computer passes through WIFI module and server
Connection.Setting can guarantee transmission speed in this way.
In the present embodiment, host computer is computer, and control unit is STM32F407ZET6 chip.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (9)
1. a kind of finger venous collection identifying system, which is characterized in that including control unit and camera connected to it, infrared right
Pipe and host computer, host computer are connected with server, and server refers to vein pattern for storing finger vein features information to be formed
Information bank；Infrared tube is used to emit the near-infrared light waves of irradiation finger, and camera face infrared tube is arranged and is used to acquire
Finger after near-infrared light waves are irradiated is to acquire original finger venous image；Host computer is original for transmitting to control unit
Finger venous image is handled to obtain finger vein features information, finger vein features information and finger of the host computer to acquisition
Existing finger vein features information carries out matching treatment in vein pattern information bank, to complete identification.
2. a kind of finger venous collection identifying system according to claim 1, which is characterized in that further include connecting with control unit
Whether the infrared sensor connect has finger placement in the irradiated region for detecting near-infrared light waves.
3. a kind of finger venous collection identifying system according to claim 1, which is characterized in that further include infrared for connecting
Section circuit module is emphasized to the infrared emission light of pipe and control unit；The original finger vena figure that control unit acquires camera
As processing acquisition finger thickness, and infrared emission light is controlled according to finger thickness and emphasizes section circuit module to adjust infrared tube hair
The intensity for the near-infrared light waves penetrated.
4. a kind of finger venous collection identifying system according to claim 1, which is characterized in that further include connecting with control unit
The display module connect, for showing the original finger venous image of camera acquisition.
5. a kind of finger venous collection identifying system according to claim 4, which is characterized in that display module is that LCD is shown
Module.
6. a kind of finger venous collection identifying system according to claim 4, which is characterized in that display module is touch screen；
It is equipped in host computer and needs archive module and need to identify module；Need finger vein features letter of the archive module for will acquire
Breath, which is directly stored in, to be referred in vein pattern information bank；Need to identify the finger vein features information and refer to that vein is special that module will acquire
It levies existing finger vein features information in information bank and carries out matching treatment, to complete identification；It can be selected by touch screen
It needs archive module or needs to identify module.
7. a kind of finger venous collection identifying system according to claim 1, which is characterized in that camera includes cmos imaging
Device and infrared fileter for ending visible light wave, light wave enter cmos imager part after infrared fileter.
8. a kind of finger venous collection identifying system according to claim 1, which is characterized in that control unit by USB or
WIFI module is connect with host computer；Host computer is connect by WIFI module with server.
9. a kind of finger venous collection identifying system according to claim 1, which is characterized in that host computer is computer, control
Unit processed is STM32F407ZET6 chip.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810987565.1A CN109446874A (en) | 2018-08-28 | 2018-08-28 | A kind of finger venous collection identifying system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810987565.1A CN109446874A (en) | 2018-08-28 | 2018-08-28 | A kind of finger venous collection identifying system |
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| CN201810987565.1A Pending CN109446874A (en) | 2018-08-28 | 2018-08-28 | A kind of finger venous collection identifying system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110110635A (en) * | 2019-04-28 | 2019-08-09 | 上海芯灵科技有限公司 | Contactless finger vein identification device and its recognition methods |
| CN110852309A (en) * | 2019-12-04 | 2020-02-28 | 杭州比扬智能科技有限公司 | Sliding finger vein recognition device |
| CN112036289A (en) * | 2020-08-27 | 2020-12-04 | 五邑大学 | Finger vein recognition device, method and storage medium |
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Application publication date: 20190308 |