WO2005122896A1 - 皮下血流測定に基づく個人認証方法及び個人認証装置 - Google Patents
皮下血流測定に基づく個人認証方法及び個人認証装置 Download PDFInfo
- Publication number
- WO2005122896A1 WO2005122896A1 PCT/JP2005/009913 JP2005009913W WO2005122896A1 WO 2005122896 A1 WO2005122896 A1 WO 2005122896A1 JP 2005009913 W JP2005009913 W JP 2005009913W WO 2005122896 A1 WO2005122896 A1 WO 2005122896A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- blood flow
- light
- pixel
- map
- personal identification
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow
- A61B5/026—Measuring blood flow
- A61B5/0261—Measuring blood flow using optical means, e.g. infrared light
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/117—Identification of persons
- A61B5/1171—Identification of persons based on the shapes or appearances of their bodies or parts thereof
- A61B5/1172—Identification of persons based on the shapes or appearances of their bodies or parts thereof using fingerprinting
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; 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
- G06V40/15—Biometric patterns based on physiological signals, e.g. heartbeat, blood flow
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; 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
- G06V40/1312—Sensors therefor direct reading, e.g. contactless acquisition
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; 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
Definitions
- the present invention relates to a personal authentication method characterized by measuring subcutaneous blood flow and a device used therefor.
- the blood flow map force of the finger pad also relates to a method and apparatus for extracting a pattern corresponding to a fingerprint and performing identity verification.
- Patent Document 1 Japanese Patent Application Laid-Open No. 5-73666
- Patent Document 2 JP-A-8-16752
- Patent Document 3 Japanese Patent Application Laid-Open No. 2003-331268
- Patent Document 4 Japanese Patent Publication No. 5-28133
- Patent Document 5 Japanese Patent Publication No. 5-28134
- Patent Document 6 Japanese Patent Application Laid-Open No. 4-242628
- Patent Document 7 JP-A-8-112262
- Patent Document 8 Japanese Patent Application Laid-Open No. 2003-164431
- Patent Document 9 Japanese Patent Application Publication No. 2003-180641
- the fingerprint pattern is more complicated in shape than the vein pattern, it may be possible to construct a more accurate personal identification method. However, if the same shape as the finger pad is forged, for example, it may be broken. There is a risk of In order to solve this problem, it is effective to use some biological information together.
- fingerprint patterns are extracted using the property that the subcutaneous blood flow distribution is spatially modulated by the unevenness of the fingerprint. At the same time, we will try to simultaneously extract information based on the pulsation of blood flow and provide a highly accurate personal identification method and device using these.
- One object of the present invention is a personal identification method characterized by measuring subcutaneous blood flow, which comprises: (1) expanding a laser beam to irradiate the finger pad, and reflecting from a blood vessel layer under the skin; Imaging the formed light as laser speckles on the image sensor using an optical system; (2) an amount representing the speed of time change of the light reception amount in each pixel of the laser speckle, for example, Step of obtaining the blood flow map of the finger pad as a two-dimensional map by obtaining the reciprocal of the mean time change rate or the variation of the received light amount integrated according to the exposure time of the image sensor, (3) as a blood flow map
- This is achieved by constructing a personal identification method comprising the step of comparing the appearing fingerprint pattern with the personal data registered in advance, and an apparatus for performing each step.
- Another object of the present invention is a personal identification method characterized by measuring subcutaneous blood flow, which comprises: (1) expanding a laser beam and irradiating a finger pad with a blood vessel layer under the skin Reflected Imaging light as laser speckle on an image sensor using an optical system;
- An amount representing the speed of time change of the light reception amount in each pixel of the laser speckle for example, an average time change rate, or an inverse of the fluctuation of the light reception amount integrated according to the exposure time of the image sensor
- the fingerprint sensing technology of the present invention uses a bloodstream information unique to a living organism to draw a fingerprint pattern, and uses the fact that the pattern is temporally synchronized in synchronization with the heart rate. As such, a model that combines a two-dimensional pattern and a time axis is very difficult to forge. Also, after the fingerprint pattern is obtained, there is an advantage that the conventional fingerprint pattern comparison method 'technology can be used as it is.
- FIG. 1 is an explanatory view showing a cross section of a finger pad skin.
- FIG. 2 is an explanatory view showing an implementation method of the present invention using a blood flow map.
- the present invention measures subcutaneous blood flow spatially modulated by unevenness of the fingerprint by blood flow measurement technology using laser scattering, but in order to measure subcutaneous blood flow, first, a laser luminous flux is used.
- the lens is irradiated with light, and the light reflected from the blood vessel layer under the skin is imaged as a laser speckle on an image sensor using an optical system.
- laser speckles are continuously scanned using an image sensor, and an amount representing the speed of time change of the light reception amount at each pixel, for example, integrated according to the average time change rate or the exposure time of the image sensor.
- the reciprocal of the fluctuation of the amount of received light is calculated, and the obtained numerical value is used as a two-dimensional map to obtain a blood flow map of the finger pad.
- the fingerprint pattern that appears as a blood flow map is 'compared' with the pre-registered personal data.
- a time-course change of the average blood flow in the whole or a certain area is determined, and a step of comparing with a predetermined reference is also added.
- a step of displaying the blood flow map or fingerprint not obtained or means for displaying may be incorporated as necessary.
- a small laser light source such as a semiconductor laser
- the radiation spot is imaged on a light receiving surface such as a CCD camera through a lens.
- a video signal obtained from a CCD camera is AZD converted and taken into a personal computer or microcomputer, and an amount representing the speed of time change of the light reception amount in each pixel, for example, the average time change rate or the exposure time of the image sensor. Calculate the reciprocal of the integrated fluctuation in the amount of received light, and display it as a map if necessary, and use it as blood flow map data.
- a fingerprint pattern that appears as a blood flow map is As the 'method of determination' means for comparison with data, any method known in the art which does not need to be special can be used.
- the blood flow map obtained in the present invention is information that can be obtained by itself in nature. Therefore, even with the method of claim 1 of the present invention, personal authentication can be performed only by the conventional fingerprint pattern. It is more difficult to forge than the means to do.
- the invention of claim 2 of the present invention further, as (4), the time-dependent change of the average blood flow in the whole or a certain area is determined, and a comparison is made with a predetermined reference. Because it is more difficult to forge.
- the reference of the waveform characteristic to the living body is determined in advance, and the comparison is compared with that. The life and death of the subject can be determined. For this reference, for example, wave shape, amplitude, period etc. can be used.
- the action 'phenomenon of the present invention is considered as follows.
- the laser beam is expanded and irradiated to the finger, and the light reflected from the blood vessel layer located under the skin is imaged on the image sensor through the lens, the light also scatters the light such as skin tissue and blood cells on this image plane Together, random spots (laser speckles) occur.
- This speckle pattern changes every moment by the movement of scattering particles, and the time change is proportional to the velocity of the particles, that is, the blood flow velocity.
- an amount representing the speed of time change of the light reception amount in each pixel for example, the average time change rate, or the reciprocal of the fluctuation of the light reception amount integrated according to the exposure time of the image sensor is obtained.
- the blood flow map can be obtained by displaying these numerical values as a two-dimensional map. This value is proportional to the average velocity of the scattering particles in the light path that the laser travels from entering the skin to being scattered by internal blood cells and exiting from the skin surface. Therefore, the longer it passes through the area with less blood flow, such as the stratum corneum, the smaller the fluctuation of the amount of received light, and the slower the time change. Since blood cells fluctuate in speed in synchronization with the heart rate, temporal changes in the amount of light received that can be read for each scan are delayed during diastole, which accelerates during systole of the heart.
- Fig. 1 is a cross-sectional view of the skin of the finger
- 1 is a stratum corneum
- 2 is a subcutaneous blood vessel tissue
- 3 is a mountain portion of the stratum corneum
- 4 is a valley portion of the stratum corneum.
- the fingerprint of the tissue connects fine mountains and mountains, or valleys and valleys, on the surface of the stratum corneum, and it is viewed as a pattern.
- the valley portion reflects the fast blood flow directly below, and the temporal change rate of blood flow is displayed high. Using this property, a fingerprint pattern can be obtained, and furthermore, the temporal change rate of blood flow periodically fluctuates in synchronization with the heartbeat.
- the variation component of the scattered light is greatly affected even if the window part to which the finger pad is applied is somewhat soiled.
- an apparatus for executing the personal identification method which also has the above-described process power.
- the device according to the present invention comprises an irradiating means for expanding a laser beam and irradiating the finger pad, a light receiving means having a large number of pixels and receiving reflected light from the finger pad, and the respective pixels obtained by the light receiving means.
- Personal identification device And a means for determining the time-dependent change of the average blood flow in the whole or a certain area in addition to the forceful apparatus, and determining 'comparison with a predetermined reference'. It is.
- the irradiating means for example, light emitted from a semiconductor laser is spread through a lens, and a wide area of the finger pad is irradiated at one time.
- an image sensor such as a line sensor or an area sensor is used.
- the electrical signal from the sensor is stored in the storage unit of a microcomputer or personal computer after AZD conversion. Image signals are continuously stored in the storage unit for several seconds, and the difference between two consecutive images is calculated by a program preset in a microcomputer or personal computer, and the speed of the time change of the light reception amount is calculated. Do.
- the speed of light reception is calculated using the blurring rate of the image, that is, when the light quantity changes at high speed within the exposure time of the image sensor, the signal is integrated and the difference between the two screens decreases. It will
- the calculation result can also be displayed as a two-dimensional color map on the screen of a personal computer according to the arrangement of each pixel.
- the means for Various means of knowledge can be used.
- the temporal change over a few seconds of the blood flow value averaged for a certain area of the finger pad can be determined, and for example, the wave shape, amplitude, period, etc. of this blood flow change can be used as a criterion for comparison.
- FIG. 2 shows an example of the device of the present invention, 5 being a semiconductor laser, 6 being an irradiation optical system, 7 being a finger pad, 8 being a laser spot, 9 being an imaging lens, 10 being an image sensor, 11 being an
- the analysis personal computer 12 is a display, and 13 is a blood flow map corresponding to a fingerprint.
- the laser which is also scattered by finger pressure forms a random interference fringe pattern (laser-one speckle) on the image sensor, and this pattern changes momentarily by the blood flow, and the thinner part of the stratum corneum changes faster. Do. By connecting the fast-changing parts of the blood flow, the valleys of the fingerprint are connected to obtain a fingerprint pattern. The result of fingerprint extraction can be observed on the display 12 as shown in FIG.
- the blood flow map force can also be used to extract fingerprint patterns and compare them with personal data registered in advance using known methods and means, and accurately confirm whether they are the person or not.
- the temporal change rate of the blood flow in the observation visual field changes in time synchronously with the heartbeat, and its amplitude and waveform can also be observed on the display.
- the blood flow map force also extracts fingerprint patterns and compares it with personal data registered in advance to accurately check whether they are the person or not and to extract the wave shape of the time change rate of blood flow etc. It is characterized in that life and death can be judged in comparison with a predetermined standard.
- the personal authentication method according to the present invention combines complicated fingerprint patterns and biometric information, making it difficult to forge. This advantage can be harnessed and used for entry and exit monitoring and immigration control of facilities that require a high degree of security management.
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Biophysics (AREA)
- General Health & Medical Sciences (AREA)
- Human Computer Interaction (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Pathology (AREA)
- Biomedical Technology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Veterinary Medicine (AREA)
- Cardiology (AREA)
- Physiology (AREA)
- Hematology (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Collating Specific Patterns (AREA)
- Image Input (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006514685A JP3903188B2 (ja) | 2004-06-18 | 2005-05-31 | 皮下血流測定に基づく個人認証方法及び個人認証装置 |
| US10/596,975 US20070263906A1 (en) | 2004-06-18 | 2005-05-31 | Personal Identification Method by Subcutaneous Bloodstream Measurement and Personal Identification Device |
| GB0616888A GB2426580C (en) | 2004-06-18 | 2005-05-31 | Personal identification method by subcutaneous bloodstream measurement and personal identification device. |
| US11/646,349 US7844083B2 (en) | 2004-06-18 | 2006-12-28 | Method for acquiring personal identification data, personal identification method, apparatus for acquiring personal identification data, and personal identification apparatus |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004-181221 | 2004-06-18 | ||
| JP2004181221 | 2004-06-18 |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US10/596,975 A-371-Of-International US20070263906A1 (en) | 2004-06-18 | 2005-05-31 | Personal Identification Method by Subcutaneous Bloodstream Measurement and Personal Identification Device |
| US11/646,349 Continuation-In-Part US7844083B2 (en) | 2004-06-18 | 2006-12-28 | Method for acquiring personal identification data, personal identification method, apparatus for acquiring personal identification data, and personal identification apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005122896A1 true WO2005122896A1 (ja) | 2005-12-29 |
Family
ID=35509398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/009913 Ceased WO2005122896A1 (ja) | 2004-06-18 | 2005-05-31 | 皮下血流測定に基づく個人認証方法及び個人認証装置 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20070263906A1 (ja) |
| JP (1) | JP3903188B2 (ja) |
| KR (1) | KR100900901B1 (ja) |
| CN (1) | CN100471449C (ja) |
| GB (1) | GB2426580C (ja) |
| WO (1) | WO2005122896A1 (ja) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007097129A1 (ja) * | 2006-02-22 | 2007-08-30 | Kyushu Institute Of Technology | レーザー光による指先血流測定を利用した個人認証方法及び個人認証装置 |
| WO2007142055A1 (ja) * | 2006-06-07 | 2007-12-13 | Kyushu Institute Of Technology | レーザー光による眼底血流測定を利用した個人認証方法及び個人認証装置 |
| WO2008069062A1 (ja) * | 2006-12-01 | 2008-06-12 | Kyushu Tlo Company, Limited | 血流速度画像化装置 |
| CN100453040C (zh) * | 2007-01-23 | 2009-01-21 | 天津理工大学 | 基于人体手背皮下静脉血管特征的身份识别仪及识别方法 |
| WO2009122931A1 (ja) * | 2008-04-03 | 2009-10-08 | 国立大学法人九州工業大学 | 皮下血流測定を利用した個人認証方法及び個人認証装置 |
| US8605962B2 (en) | 2008-01-21 | 2013-12-10 | Nec Corporation | Pattern matching system, pattern matching method, and pattern matching program |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7844083B2 (en) * | 2004-06-18 | 2010-11-30 | Kyushu Institute Of Technology | Method for acquiring personal identification data, personal identification method, apparatus for acquiring personal identification data, and personal identification apparatus |
| EP2143045A1 (en) * | 2007-03-14 | 2010-01-13 | Spectros Corporation | Metabolism-or biochemical-based anti-spoofing biometrics devices, systems, and methods |
| EP1988489B1 (en) * | 2007-05-04 | 2021-02-17 | STMicroelectronics (Research & Development) Limited | Biometric sensor apparatus and method |
| KR20100033371A (ko) * | 2007-05-07 | 2010-03-29 | 주식회사 이노제스트 | 피하 정맥 패턴 인식 장치 및 방법 |
| US9028421B2 (en) * | 2009-05-13 | 2015-05-12 | Kyushu Institute Of Technology | Blood flow image diagnosing device |
| CN102713967B (zh) * | 2009-10-26 | 2016-04-20 | 日本电气株式会社 | 伪指确定装置及伪指确定方法 |
| WO2012009791A1 (en) * | 2010-07-19 | 2012-01-26 | Risst Ltd. | Fingerprint sensors and systems incorporating fingerprint sensors |
| JP5690556B2 (ja) * | 2010-11-12 | 2015-03-25 | 株式会社 日立産業制御ソリューションズ | 個人認証装置 |
| US20150130917A1 (en) * | 2013-11-12 | 2015-05-14 | The University Of Massachusetts | Miniature contactless fingerprinting device |
| US11064893B2 (en) * | 2016-07-20 | 2021-07-20 | Samsung Electronics Co., Ltd. | Real time authentication based on blood flow parameters |
| KR102560710B1 (ko) | 2016-08-24 | 2023-07-27 | 삼성전자주식회사 | 광학적 스펙클을 이용하는 장치 및 방법 |
| CN108960007B (zh) * | 2017-05-19 | 2022-01-04 | 致伸科技股份有限公司 | 光学式指纹识别模块 |
| CN111476143B (zh) * | 2020-04-03 | 2022-04-22 | 华中科技大学苏州脑空间信息研究院 | 获取多通道图像、生物多参数以及身份识别的装置 |
| CN116721474B (zh) * | 2023-04-25 | 2025-12-02 | 中国工商银行股份有限公司 | 识别方法、装置、计算机设备和存储介质 |
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- 2005-05-31 JP JP2006514685A patent/JP3903188B2/ja not_active Expired - Lifetime
- 2005-05-31 WO PCT/JP2005/009913 patent/WO2005122896A1/ja not_active Ceased
- 2005-05-31 KR KR1020077000532A patent/KR100900901B1/ko not_active Expired - Lifetime
- 2005-05-31 US US10/596,975 patent/US20070263906A1/en not_active Abandoned
- 2005-05-31 CN CNB2005800198223A patent/CN100471449C/zh not_active Expired - Lifetime
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| JPH025190A (ja) * | 1988-06-24 | 1990-01-10 | Fujitsu Ltd | 指紋センサ |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7817256B2 (en) | 2006-02-22 | 2010-10-19 | Kyushu Institute Of Technology | Personal authentication method and personal authentication device utilizing finger-tip blood flow measurement by laser light |
| JP4769952B2 (ja) * | 2006-02-22 | 2011-09-07 | 国立大学法人九州工業大学 | レーザー光による指先血流測定を利用した個人認証方法及び個人認証装置 |
| WO2007097129A1 (ja) * | 2006-02-22 | 2007-08-30 | Kyushu Institute Of Technology | レーザー光による指先血流測定を利用した個人認証方法及び個人認証装置 |
| GB2454370B (en) * | 2006-06-07 | 2011-04-13 | Kyushu Inst Technology | Personal authentication method and personal authentication device that use eye fundus blood flow measurement by laser light |
| GB2454370A (en) * | 2006-06-07 | 2009-05-06 | Kyushu Inst Technology | Personal authentication method and personal authentication device that use eye fundus blood flow measurement by laser light |
| JP2009095350A (ja) * | 2006-06-07 | 2009-05-07 | Kyushu Institute Of Technology | レーザー光による眼底血流測定を利用した個人認証方法及び個人認証装置 |
| KR101058152B1 (ko) * | 2006-06-07 | 2011-08-24 | 카부시키가이샤 시스콤 | 레이저 광에 의한 안저 혈류 측정을 이용한 개인 인증 방법및 개인 인증 장치 |
| WO2007142055A1 (ja) * | 2006-06-07 | 2007-12-13 | Kyushu Institute Of Technology | レーザー光による眼底血流測定を利用した個人認証方法及び個人認証装置 |
| US8285003B2 (en) | 2006-06-07 | 2012-10-09 | Kyushu Institute Of Technology | Personal authentication method and personal authentication device utilizing ocular fundus blood flow measurement by laser light |
| WO2008069062A1 (ja) * | 2006-12-01 | 2008-06-12 | Kyushu Tlo Company, Limited | 血流速度画像化装置 |
| JP4803520B2 (ja) * | 2006-12-01 | 2011-10-26 | 株式会社産学連携機構九州 | 血流速度画像化装置 |
| CN100453040C (zh) * | 2007-01-23 | 2009-01-21 | 天津理工大学 | 基于人体手背皮下静脉血管特征的身份识别仪及识别方法 |
| US8605962B2 (en) | 2008-01-21 | 2013-12-10 | Nec Corporation | Pattern matching system, pattern matching method, and pattern matching program |
| WO2009122931A1 (ja) * | 2008-04-03 | 2009-10-08 | 国立大学法人九州工業大学 | 皮下血流測定を利用した個人認証方法及び個人認証装置 |
| US8494228B2 (en) | 2008-04-03 | 2013-07-23 | Kyushu Institute Of Technology | Personal authentication method using subcutaneous bloodstream measurement and personal authentication device |
| JP5340262B2 (ja) * | 2008-04-03 | 2013-11-13 | 国立大学法人九州工業大学 | 皮下血流測定を利用した個人認証方法及び個人認証装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100471449C (zh) | 2009-03-25 |
| CN1968649A (zh) | 2007-05-23 |
| KR20070024715A (ko) | 2007-03-02 |
| GB0616888D0 (en) | 2006-10-04 |
| KR100900901B1 (ko) | 2009-06-03 |
| GB2426580B (en) | 2007-03-07 |
| GB2426580A (en) | 2006-11-29 |
| JPWO2005122896A1 (ja) | 2008-07-31 |
| GB2426580C (en) | 2007-03-07 |
| JP3903188B2 (ja) | 2007-04-11 |
| US20070263906A1 (en) | 2007-11-15 |
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