WO2004061758A1 - Procede de determination du caractere vivant d’un element porteur d’une empreinte digitale - Google Patents
Procede de determination du caractere vivant d’un element porteur d’une empreinte digitale Download PDFInfo
- Publication number
- WO2004061758A1 WO2004061758A1 PCT/FR2003/003804 FR0303804W WO2004061758A1 WO 2004061758 A1 WO2004061758 A1 WO 2004061758A1 FR 0303804 W FR0303804 W FR 0303804W WO 2004061758 A1 WO2004061758 A1 WO 2004061758A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fingerprint
- image
- finger
- interval
- determining
- Prior art date
Links
Classifications
-
- 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
Definitions
- the present invention relates to a method for determining the living character of a finger by a fingerprint sensor.
- the invention also relates to the fingerprint sensor allowing the implementation of this method.
- any protected access becomes accessible to an authorized person by a means that only they have.
- One of the ways to limit access to a person is to require that person's fingerprint.
- the image of a person's fingerprint is obtained by a fingerprint sensor. Once the image of the imprint obtained by the sensor, it is transmitted to an image processing unit which compares the image obtained with a bank of image of imprints so as to verify that the imprint taken by the sensor is known. Recognition of the fingerprint by the image processing unit then gives the person to whom the fingerprint corresponds access to what they are looking for.
- the measurement of the finger impedance is one of the methods best suited to the verification of the living character of a finger.
- the technique consists in measuring an impedance Z between two electrodes and in comparing the value obtained by this measurement with an interval of values considered as acceptable. The technique is still sometimes deceived by imitations and the errors of discrimination remain numerous.
- the object of the invention is therefore to propose a method for determining the living nature of an element carrying a fingerprint by a fingerprint sensor.
- the invention relates to a method for determining the living nature of an element carrying a fingerprint, characterized in that it consists in carrying out, on the one hand, at least one electrical measurement and, on the other hand, an image of said fingerprint, then validating said or each electrical measurement by comparing it to an interval of electrical measurement values defined by a predetermined relationship linking said interval to characteristics of said image.
- said electrical measurement is an impedance measurement.
- said method consists in linking said characteristics of the image of the imprint and said range of acceptable values by grouping together said characteristics of the image in the form of a note, said note corresponding to a range of predefined electrical measurement values.
- the invention also relates to a fingerprint sensor for determining the living nature of an element carrying a fingerprint.
- the sensor is characterized in that it includes means provided for implementing the method according to one of the preceding claims.
- Fig. 1 shows a fingerprint sensor according to the invention covered with a fingerprint-bearing element
- Fig. 2a shows an imprint-carrying element whose imprint is wet
- Fig. 2b represents an imprint-carrying element whose imprint is dry
- Fig. 3a represents the image taken by the fingerprint sensor according to the invention of a wet imprint
- Fig. 3b represents the image taken by the fingerprint sensor according to the invention of a dry fingerprint
- the determination of the living character of an element carrying a fingerprint is carried out by electrical measurements thereon. These measurements preferably consist of impedance measurements.
- the measurement of the impedance Z is carried out, as shown in FIG. 1, by a fingerprint sensor 1 placed in contact with the element carrying the fingerprint, here represented by a finger D.
- An optical system SO is placed at the base of the sensor 1 so as to produce an image of the fingerprint D.
- the fingerprint sensor 1 according to the invention comprises a plate 10 of transparent material, for example glass or transparent plastic, making it optically possible to take the fingerprint D. On the surface 11 of this plate 10, are arranged electrodes Ei and Ej between which an impedance Zij is measured.
- connections 20 are made possible by conductive and transparent connections. These connections 20 also placed in contact with the plate 10 must necessarily be conductive and transparent so as to allow the sensor 1 to ensure both its image sensor function and its function of verifying the living character of the finger.
- the transparency of the connections 20 is preferably obtained by deposition under vacuum of a very thin layer of material, preferably ITO (Indium tin Oxide), of thickness less than one micrometer.
- ITO Indium tin Oxide
- the measurement of the impedance Zij makes it possible to verify the living character of the finger by comparing the value of the impedance Zij measured with an interval Iv of values deemed acceptable for a living finger.
- This value interval must be precisely defined in order to accept all living fingers, even those with out-of-size characteristics, but to reject false fingers having characteristics close to living fingers.
- This interval Iv of acceptable values is defined in the invention for each of the fingers D present on the sensor 1 as a function of the characteristics of the image le of the imprint.
- a finger D and the image of his fingerprint.
- the fingerprint D has a relief formed by hollows also called valleys N and by bumps also called edges R (ridges in English terminology).
- the valleys N appear in black and the edges R in white.
- Each finger D at a given time t, gives a unique image having particular characteristics. These characteristics are for example the contrast, the average gray level of the images, the width of the edges R, the average gray level of the edges, etc.
- the characteristics of the image are due to characteristics of the finger D, such as for example humidity.
- the different characteristics of the image are gathered in the form of a note, for example between 0 and 1. Therefore, to an image the of a given imprint corresponds a given note.
- a wet Dh finger There is shown by way of example in FIG. 2a, a wet Dh finger.
- the image Ieh of the imprint of this wet finger Dh has particular characteristics.
- a wet finger Dh plays on the contrast of the image Ieh of the imprint.
- Figs. 2b and 3b than a finger Ds sec gives an image of the imprint of this finger Ds with little contrast.
- the humidity of finger D is not the only characteristic of finger D to play on the characteristics of the image le.
- the finger D influence several characteristics of the image le of the imprint.
- several of the characteristics of the image le of the fingerprint D are used to determine the note corresponding to the image le of the fingerprint.
- Each note between 0 and 1 is associated with an interval Iv of predefined impedance value.
- the measured impedance value Zij belongs to the interval Iv, it will then be assumed that the finger D is alive, otherwise the finger D will be rejected by the sensor 1.
- the method according to the invention can be implemented in parallel with d Other methods of determining the living character of an element carrying a fingerprint, such as for example a method consisting in checking the correlation between the measured impedance and the surface of the measuring electrodes.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03799636A EP1573656A1 (fr) | 2002-12-20 | 2003-12-19 | Procede de determination du caractere vivant d'un element porteur d'une empreinte digitale |
US10/539,823 US7657066B2 (en) | 2002-12-20 | 2003-12-19 | Method of determining the living character of an element carrying a fingerprint |
AU2003299354A AU2003299354A1 (en) | 2002-12-20 | 2003-12-19 | Method of determining the living character of an element bearing a fingerprint |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0216736A FR2849246B1 (fr) | 2002-12-20 | 2002-12-20 | Procede de determination du caractere vivant d'un element porteur d'une empreinte digitale |
FR02/16736 | 2002-12-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004061758A1 true WO2004061758A1 (fr) | 2004-07-22 |
Family
ID=32406534
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2003/003804 WO2004061758A1 (fr) | 2002-12-20 | 2003-12-19 | Procede de determination du caractere vivant d’un element porteur d’une empreinte digitale |
Country Status (6)
Country | Link |
---|---|
US (1) | US7657066B2 (fr) |
EP (1) | EP1573656A1 (fr) |
CN (1) | CN100388302C (fr) |
AU (1) | AU2003299354A1 (fr) |
FR (1) | FR2849246B1 (fr) |
WO (1) | WO2004061758A1 (fr) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2897966B1 (fr) | 2006-02-24 | 2008-05-16 | Sagem Defense Securite | Biodetecteur sans contact |
FR2907940B1 (fr) | 2006-10-25 | 2009-05-01 | Sagem Defense Securite | Procede de validation de capture d'empreinte corporelle, notamment d'une empreinte digitale |
FR2915008B1 (fr) | 2007-04-12 | 2015-04-17 | Sagem Defense Securite | Procede de detection du caractere vivant d'une zone corporelle et dispositif optique pour la mise en oeuvre de ce procede |
CN102156858B (zh) * | 2011-04-18 | 2016-04-20 | 无锡爱维特信息技术有限公司 | 一种结合摄像头和指纹识别器的活体指纹识别装置 |
WO2012158950A1 (fr) | 2011-05-17 | 2012-11-22 | Cross Match Technologies, Inc. | Capteurs d'empreinte digitale |
WO2013071311A1 (fr) | 2011-11-11 | 2013-05-16 | Cross Match Technologies, Inc. | Rejet de la lumière ambiante pour capteurs à contact non imageurs |
EP2776977B1 (fr) | 2011-11-12 | 2020-04-22 | Cross Match Technologies, Inc. | Éclairage par lumière ambiante pour capteurs à contact non imageurs |
US9633269B2 (en) * | 2014-09-05 | 2017-04-25 | Qualcomm Incorporated | Image-based liveness detection for ultrasonic fingerprints |
US9965671B2 (en) * | 2016-06-27 | 2018-05-08 | Himax Technologies Limited | Material identifying system and related identifying method |
FR3085079B1 (fr) | 2018-08-20 | 2021-09-24 | Idemia Identity & Security France | Authentification par indice optique |
FR3086077B1 (fr) | 2018-09-19 | 2020-08-14 | Idemia Identity & Security France | Procede de detection de fraude par la caracterisation polarimetrique d'un element du corps humain |
FR3094113B1 (fr) | 2019-03-22 | 2021-02-19 | Idemia Identity & Security France | Dispositif et procédé d'acquisition et de traitement biométrique |
FR3117644A1 (fr) * | 2020-12-14 | 2022-06-17 | Idemia Identity & Security France | Détecteur de dermatoglyphes |
Citations (4)
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WO2001024700A1 (fr) * | 1999-10-07 | 2001-04-12 | Veridicom, Inc. | Detection de d'empreintes frauduleuses pour systemes de detection biometrique |
WO2001065470A1 (fr) * | 2000-02-29 | 2001-09-07 | Infineon Technologies Ag | Procede pour analyser des images d'empreintes digitales |
WO2001065466A2 (fr) * | 2000-02-29 | 2001-09-07 | Digital Persona, Inc. | Procede et appareil de detection d'un changement de couleur d'un doigt vivant |
EP1187057A2 (fr) * | 2000-08-28 | 2002-03-13 | STMicroelectronics, Inc. | Détection résistive d'un doigt dans un capteur des empreintes digitales |
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CA2003131C (fr) * | 1988-11-25 | 1998-06-23 | Seigo Igaki | Appareil pour la detection d'objets biologiques |
HU214533B (hu) * | 1995-10-06 | 1998-03-30 | Dermo Corporation Ltd. | Detektor ujj élő jellegének felismerésére |
US6067368A (en) * | 1996-01-26 | 2000-05-23 | Authentec, Inc. | Fingerprint sensor having filtering and power conserving features and related methods |
US5963657A (en) * | 1996-09-09 | 1999-10-05 | Arete Associates | Economical skin-pattern-acquisition and analysis apparatus for access control; systems controlled thereby |
US5953441A (en) * | 1997-05-16 | 1999-09-14 | Harris Corporation | Fingerprint sensor having spoof reduction features and related methods |
US6628809B1 (en) * | 1999-10-08 | 2003-09-30 | Lumidigm, Inc. | Apparatus and method for identification of individuals by near-infrared spectrum |
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US6263091B1 (en) * | 1997-08-22 | 2001-07-17 | International Business Machines Corporation | System and method for identifying foreground and background portions of digitized images |
US6411726B1 (en) * | 1998-10-08 | 2002-06-25 | Durel Corporation | Fingerprint detector using an EL lamp |
US7151528B2 (en) * | 1999-06-22 | 2006-12-19 | Cirque Corporation | System for disposing a proximity sensitive touchpad behind a mobile phone keypad |
US6816605B2 (en) * | 1999-10-08 | 2004-11-09 | Lumidigm, Inc. | Methods and systems for biometric identification of individuals using linear optical spectroscopy |
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US6292576B1 (en) * | 2000-02-29 | 2001-09-18 | Digital Persona, Inc. | Method and apparatus for distinguishing a human finger from a reproduction of a fingerprint |
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JP3559754B2 (ja) * | 2000-07-25 | 2004-09-02 | Necエレクトロニクス株式会社 | 指紋認証装置 |
US6601056B1 (en) * | 2000-09-28 | 2003-07-29 | Microsoft Corporation | Method and apparatus for automatic format conversion on removable digital media |
KR100378994B1 (ko) * | 2000-11-07 | 2003-04-07 | 테스텍 주식회사 | 패턴화된 플로팅 전극이 구비된 지문인식소자 및 그제조방법 |
JP2003075135A (ja) * | 2001-08-31 | 2003-03-12 | Nec Corp | 指紋画像入力装置および指紋画像による生体識別方法 |
KR100432490B1 (ko) * | 2001-09-17 | 2004-05-22 | (주)니트 젠 | 광학식 지문취득 장치 |
JP4387795B2 (ja) * | 2001-12-07 | 2009-12-24 | アイデックス・エーエスエー | 湿潤及び乾燥指上の測定用センサ |
EP1353292B1 (fr) * | 2002-04-12 | 2011-10-26 | STMicroelectronics (Research & Development) Limited | Appareil et procédés de saisie biométrique |
US7200250B2 (en) * | 2003-05-20 | 2007-04-03 | Lightuning Tech, Inc. | Sweep-type fingerprint sensor module |
JP3994930B2 (ja) * | 2003-06-13 | 2007-10-24 | ソニー株式会社 | 画像照合装置、および画像照合方法 |
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US20050063575A1 (en) * | 2003-09-22 | 2005-03-24 | Ge Medical Systems Global Technology, Llc | System and method for enabling a software developer to introduce informational attributes for selective inclusion within image headers for medical imaging apparatus applications |
FR2872318B1 (fr) * | 2004-06-23 | 2006-09-22 | Sagem | Dispositif optique de capture biometrique par contact et installation mettant en oeuvre un tel dispositif |
-
2002
- 2002-12-20 FR FR0216736A patent/FR2849246B1/fr not_active Expired - Lifetime
-
2003
- 2003-12-19 CN CNB2003801071502A patent/CN100388302C/zh not_active Expired - Fee Related
- 2003-12-19 WO PCT/FR2003/003804 patent/WO2004061758A1/fr not_active Application Discontinuation
- 2003-12-19 US US10/539,823 patent/US7657066B2/en not_active Expired - Fee Related
- 2003-12-19 EP EP03799636A patent/EP1573656A1/fr not_active Ceased
- 2003-12-19 AU AU2003299354A patent/AU2003299354A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2001024700A1 (fr) * | 1999-10-07 | 2001-04-12 | Veridicom, Inc. | Detection de d'empreintes frauduleuses pour systemes de detection biometrique |
WO2001065470A1 (fr) * | 2000-02-29 | 2001-09-07 | Infineon Technologies Ag | Procede pour analyser des images d'empreintes digitales |
WO2001065466A2 (fr) * | 2000-02-29 | 2001-09-07 | Digital Persona, Inc. | Procede et appareil de detection d'un changement de couleur d'un doigt vivant |
EP1187057A2 (fr) * | 2000-08-28 | 2002-03-13 | STMicroelectronics, Inc. | Détection résistive d'un doigt dans un capteur des empreintes digitales |
Also Published As
Publication number | Publication date |
---|---|
US20060159314A1 (en) | 2006-07-20 |
EP1573656A1 (fr) | 2005-09-14 |
AU2003299354A1 (en) | 2004-07-29 |
CN100388302C (zh) | 2008-05-14 |
US7657066B2 (en) | 2010-02-02 |
FR2849246B1 (fr) | 2006-03-10 |
FR2849246A1 (fr) | 2004-06-25 |
CN1729473A (zh) | 2006-02-01 |
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