CN108533972A - A kind of staggered LED illumination mode of hand vein recognition - Google Patents
A kind of staggered LED illumination mode of hand vein recognition Download PDFInfo
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- CN108533972A CN108533972A CN201810285923.4A CN201810285923A CN108533972A CN 108533972 A CN108533972 A CN 108533972A CN 201810285923 A CN201810285923 A CN 201810285923A CN 108533972 A CN108533972 A CN 108533972A
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- Prior art keywords
- finger
- led illumination
- staggered
- illumination lamp
- image
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/20—Light sources comprising attachment means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
-
- 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
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
-
- 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
- G06V40/12—Fingerprints or palmprints
- G06V40/1365—Matching; Classification
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Image Input (AREA)
Abstract
The invention discloses a kind of staggered LED illumination modes of hand vein recognition, include the following steps：Finger to be identified is placed between two LED illumination lamp groups by S1, first user；S2 opens the LED light of LED illumination lamp group by switch, illuminates finger；S3, then by optical lens below finger and its matched infrared C CD or cmos imaging device, the image of finger vena is obtained, extract characteristic value.After the center of two LED illumination lamp groups of the present invention is staggered, front irradiation area light distribution can then be superposed to be uniformly distributed, and be conducive to brightness uniformity when veinprint imaging, since finger root is coarse, finger tip is very thin；LED light can be with non-homogeneous staggered, and illumination finger root LED light quantity is more, and illumination tip portion LED light quantity is few, and brightness uniformity is clear when finger vein grain entire in this way is imaged, and is conducive to the image that infrared imaging device obtains finger vena.
Description
Technical field
The present invention relates to a kind of LED illumination mode, the staggered LED illumination mode of specially a kind of hand vein recognition.
Background technology
The identification system that vein recognition system can apply to intelligent door lock, smart mobile phone identification, computer system log in
System, gate identification system, ATM cash dispenser identification systems etc., overall process are handled using micro computer, do not need human intervention.
The identification and comparison of finger venous image are that infrared light penetrates finger, and special optical lens and its matched image device is used in combination
Internal vein image is obtained, and extracts feature, rather than skin surface image feature is obtained with reflected light, is efficiently avoided
The problem of exact image feature being obtained because of the wrinkle of skin surface, fold, coarse, the dry and cracked or influences such as overly wet, and in different rings
Precision can be kept constant under border.Meanwhile being contacted less even without contact when identification, fingertip surface features are not had by the third party
The danger of fraudulent copying.
When obtaining the image of finger vena, the finger vena region needed clearly illuminates infrared imaging device, but by
In irradiation finger LED light distribution be Gaussian Profile, light intensity it is uneven, cause finger vein grain clear
It is imaged onto on detector, influences the identification of finger vena, therefore we make this improvement, propose a kind of hand vein recognition with being staggered
Arrange LED illumination mode.
Invention content
It is of the existing technology uneven due to light intensity to solve, cause finger vein grain to be unable to blur-free imaging
Onto detector, the defect of the identification of finger vena is influenced, the present invention provides a kind of hand vein recognition staggered LED illumination side
Formula.
In order to solve the above technical problem, the present invention provides the following technical solutions：
A kind of staggered LED illumination mode of hand vein recognition of the invention, includes the following steps：
Finger to be identified is placed between two staggered LED illumination lamp groups by S1, user；
S2 opens the LED light of staggered LED illumination lamp group by switching, provides illumination；
S3 is obtained the image of finger vena by lower section optical lens and infrared C CD or cmos imaging device, obtained in one's hands
The venous information of finger, in computer systems by the digital picture storage of vein；
S4, it is special with host medium sized vein is stored in filtering or image binaryzation method to digital image zooming-out characteristic value
Value indicative compares, and is matched to vein pattern using MAD algorithm, to carry out identity authentication to individual, confirms body
Part.
Further, two LED illumination lamp groups are set to the both sides of finger, the optical lens and infrared C CD
Or cmos imaging device is set to the underface of finger.
Further, two LED illumination lamp groups are whole stagger settings.
Compared with prior art, the present invention has the advantages that：Overall process is handled using micro computer, need not be artificial
Intervene.The identification and comparison of finger venous image, be transmitted light penetrate finger obtain Internal vein characteristics of image, rather than use instead
Light is penetrated to obtain skin surface image feature, efficiently avoids the wrinkle because of skin surface, fold, coarse, dry and cracked or overly wet
The problem of equal influences obtain exact image feature, and precision can be kept constant under various circumstances.Meanwhile it being contacted when identification few
Even without contact, danger of the fingertip surface features by third party's fraudulent copying is not had, and the center of two LED illumination lamp groups is wrong
After opening, front irradiation area light distribution can then be superposed to be uniformly distributed, and be conducive to brightness uniformity when veinprint imaging, in hand
Refer to the arrangement illumination of both sides opposite direction, brightness is consistent when being imaged conducive to the veinprint on finger both sides, according to finger shape, due to finger
Root is coarse, and finger tip is very thin；LED light can be with non-homogeneous staggered, and illumination finger root LED light quantity is more, illumination finger tip portion
Point LED light quantity is few, so entire finger vein grain imaging when brightness uniformity it is clear, be conducive to optical lens and its matched
CCD or cmos imaging device obtain the image of finger vena.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of the staggered LED illumination mode of hand vein recognition of the present invention；
Fig. 2 is a kind of Gaussian Profile of the hand vein recognition LED light luminous intensity of staggered LED illumination mode of the present invention
Figure.
Specific implementation mode
To make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, with reference to
Specific implementation mode, the present invention is further explained.
As shown in Figs. 1-2, the staggered LED illumination mode of a kind of hand vein recognition, includes the following steps：
Finger to be identified is placed between two staggered LED illumination lamp groups by S1, user；
S2 opens the LED light of staggered LED illumination lamp group by switching, provides illumination；
S3 is obtained the image of finger vena by the image devices such as lower section optical lens and infrared C CD or CMOS, obtained
The venous information of finger, in computer systems by the digital picture storage of vein；
S4, it is special with host medium sized vein is stored in filtering or image binaryzation method to digital image zooming-out characteristic value
Value indicative compares, and is matched to vein pattern using MAD algorithm, to carry out identity authentication to individual, confirms body
Part.
Wherein, two LED illumination lamp groups are set to the both sides of finger, optical lens and infrared C CD or cmos imaging
Device is set to the underface of finger, to obtain the venous information of finger.
Wherein, two LED illumination lamp groups are whole stagger settings, convenient for illumination finger, until the finger needs is quiet
Arteries and veins region clearly illuminates, and makes on finger vein grain blur-free imaging to detector.
It should be noted that the present invention is a kind of staggered LED illumination mode of hand vein recognition, and when specific works, head
Between finger to be identified is placed on two LED illumination lamp groups by first staff, passes through switch and open LED illumination lamp group
LED light provides illumination, and two LED illumination lamp groups are whole stagger settings, convenient for illumination finger, until the finger needs
Venosomes clearly illuminate, and make on finger vein grain blur-free imaging to detector, pass through the special infrared light below finger
It learns camera lens and its matched CCD or cmos imaging device obtains the image of finger vena, obtain the venous information of finger, it will be quiet
The digital picture storage of arteries and veins is in computer systems, special to digital image zooming-out with advanced filtering or image binaryzation method
Sign is compared with the existing vein pattern value being stored in host, is matched to vein pattern using MAD algorithm, from
And identity authentication is carried out to individual, confirm identity.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (3)
1. a kind of staggered LED illumination mode of hand vein recognition, which is characterized in that include the following steps：
Finger to be identified is placed between two staggered LED illumination lamp groups by S1, user；
S2 opens the LED light of staggered LED illumination lamp group by switching, provides illumination；
S3 is obtained the image of finger vena by optical lens below finger and infrared C CD or cmos imaging device, obtained in one's hands
The venous information of finger, in computer systems by the digital picture storage of vein；
S4, it is same to be stored in host medium sized vein characteristic value with filtering or image binaryzation method to digital image zooming-out characteristic value
It compares, vein pattern is matched using MAD algorithm, to carry out identity authentication to individual, confirm identity.
2. a kind of staggered LED illumination mode of hand vein recognition according to claim 1, which is characterized in that two institutes
The both sides that LED illumination lamp group is set to finger are stated, the optical lens and infrared C CD or cmos imaging device are set to hand
The underface of finger.
3. a kind of staggered LED illumination mode of hand vein recognition according to claim 1, which is characterized in that two institutes
It is whole stagger setting to state LED illumination lamp group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810285923.4A CN108533972A (en) | 2018-04-03 | 2018-04-03 | A kind of staggered LED illumination mode of hand vein recognition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810285923.4A CN108533972A (en) | 2018-04-03 | 2018-04-03 | A kind of staggered LED illumination mode of hand vein recognition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108533972A true CN108533972A (en) | 2018-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810285923.4A Pending CN108533972A (en) | 2018-04-03 | 2018-04-03 | A kind of staggered LED illumination mode of hand vein recognition |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1392507A (en) * | 2001-06-18 | 2003-01-22 | 日本电气株式会社 | Finger print input device |
| CN102606938A (en) * | 2011-01-18 | 2012-07-25 | Jvc建伍株式会社 | Backlight device, image display device, and method of assembling backlight device |
| CN202371495U (en) * | 2011-12-09 | 2012-08-08 | 铜陵市毅远电光源有限责任公司 | Daylight lamp |
| CN203644046U (en) * | 2013-12-02 | 2014-06-11 | 中山微盾信息科技有限公司 | Finger vein recognition device connected with smart phone or portable computer |
| CN106778446A (en) * | 2015-11-24 | 2017-05-31 | 秦皇岛鸿大科技开发有限公司 | A kind of near-infrared refers to vein image acquisition system |
| CN104063679B (en) * | 2013-03-22 | 2017-08-25 | 日立产业控制解决方案有限公司 | Blood-vessel image filming apparatus |
-
2018
- 2018-04-03 CN CN201810285923.4A patent/CN108533972A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1392507A (en) * | 2001-06-18 | 2003-01-22 | 日本电气株式会社 | Finger print input device |
| CN102606938A (en) * | 2011-01-18 | 2012-07-25 | Jvc建伍株式会社 | Backlight device, image display device, and method of assembling backlight device |
| CN202371495U (en) * | 2011-12-09 | 2012-08-08 | 铜陵市毅远电光源有限责任公司 | Daylight lamp |
| CN104063679B (en) * | 2013-03-22 | 2017-08-25 | 日立产业控制解决方案有限公司 | Blood-vessel image filming apparatus |
| CN203644046U (en) * | 2013-12-02 | 2014-06-11 | 中山微盾信息科技有限公司 | Finger vein recognition device connected with smart phone or portable computer |
| CN106778446A (en) * | 2015-11-24 | 2017-05-31 | 秦皇岛鸿大科技开发有限公司 | A kind of near-infrared refers to vein image acquisition system |
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Application publication date: 20180914 |