WO2006021165A1 - Verfahren und anordnung zur optischen aufnahme biometrischer daten - Google Patents
Verfahren und anordnung zur optischen aufnahme biometrischer daten Download PDFInfo
- Publication number
- WO2006021165A1 WO2006021165A1 PCT/DE2004/002026 DE2004002026W WO2006021165A1 WO 2006021165 A1 WO2006021165 A1 WO 2006021165A1 DE 2004002026 W DE2004002026 W DE 2004002026W WO 2006021165 A1 WO2006021165 A1 WO 2006021165A1
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- WO
- WIPO (PCT)
- Prior art keywords
- dimensional
- sensors
- imaged
- model
- dimensional images
- 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.)
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Classifications
-
- 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
Definitions
- the invention relates to a method and an arrangement for recording biometric data, in particular for detecting the finger or facial features of persons, in which an object is detected by optical scanning and evaluated by means of digital image processing.
- the aim of these programs is to increase safety, for example for air travelers, and to identify terrorists as early as possible.
- features of the face, the iris and the finger are preferably used. Because of the high identification rate and the immutability of the characteristics in the course of aging and the distinctiveness of discrimination even with identical twins, the characteristics of the finger are particularly suitable.
- the biometric features of an accessing person must be compensated with existing, very large databases, which may contain many millions of entries. It must be ensured that the biometric data stored on the passport in a falsely secure manner matches the person arriving. Since these features must be identified in a so-called 1: N search from millions of comparative information, in particular search databases, a recognition problem of the following type results with finger features: The smaller the scanned surface of the finger to be identified, the less accurate are the results of the 1: N search, since the number of features, so-called minutiae, is not sufficient for unambiguous recognition.
- rolled-up fingerprints have always been used in official criminalistics, in which the person to be registered first has to dye his fingers and then roll them on paper in order to be able to display the entire surface of the finger from nail to nail.
- DE 101 23 561 A1 describes a method for person identification by means of 3-dimensional fingertip analysis. However, no method is given of how to calculate the 3-D model and how to solve the problems of composing the frames to an overall picture with sufficient accuracy.
- DE 101 03 622 A1 describes a method for the lateral surface imaging of a finger, which essentially images the lateral surface by means of a cylindrical image.
- the disadvantage however, on the one hand that the finger is inherently not uniformly illuminated, and on the other hand, that the figure has very strong distortions, especially if the finger is not exactly in the optical axis of the cylinder.
- DE 101 53 808 A1 describes a further method for contactless optical generation of unrolled fingerprints, in which the auftre ⁇ border image distortions are to be eliminated by a chain of sub-images is generated, in which the overlapping areas of neighbar ⁇ sub-images as orientation structure under utilization of the capillary line pattern.
- the required imaging quality can not be achieved with such a method or can only be achieved with the highest expenditure.
- US 2004/0008875 A1 discloses a method for detecting and processing three-dimensional fingerprints, in which a finger arranged in contact with a transparent plate is scanned by means of at least two lasers, the lasers pivoting along the finger and overlapping Scan lines a stereoscopic fingerprint image is generated and stored.
- the method has all the disadvantages of touching optical fingerprinting methods.
- due to the geometric arrangement of the finger on the plate it is not possible to image the entire lateral surface or the entire finger ball. The recognition rate is thus low.
- An exact imaging method is not indicated in the document.
- Stereoscopic methods are known per se in the prior art.
- the locus method is known, with which stereoscopic pairs hen deviations of an imaged body can be determined with respect to a given geometric model.
- HFVM hierarchical feature vector matching
- a method is known to determine the distortions and distortions of a stereoscopic imaging arrangement on the basis of a test specimen.
- the object of the invention is to provide a method and a device with which the disadvantages of the known methods for receiving and processing fingerprints are avoided, which can be user-friendly and reliable at least represent a finger ball and allow increased security against counterfeiting.
- the object is achieved with a method having the features specified in claim 1, and an arrangement having the features specified in claim 39.
- each point of the surface to be imaged is imaged in two different directions, wherein the surface to be imaged is not touched.
- This method makes it possible to image the entire lateral surface of a finger or of a hand or of another body part, without contamination by substances deposited by body parts impairing recognition.
- the imaging in two different directions and thus the image acquisition from two different perspectives makes a high accuracy of the recognition possible.
- the images are taken in at least two sensors, preferably in all, simultaneously or approximately simultaneously. As a result, errors are minimized by a movement of the finger.
- FIG. 1 shows a schematic representation of a finger in an inventive arrangement with five sensors and their bombard ⁇ fields in front view with respect to the finger
- FIG. 2 shows a diagram of the method according to the invention
- FIG. 3 a schematic representation of an arrangement with a sample body in a parallel perspective
- FIG. 4 shows two images of the test specimen in two adjacent sensors
- FIG. 5 schematically shows the stereo parallaxes of the two figures
- FIG. 6 shows a basic model of a finger in FIG.
- FIG. 7 shows a cross section of a three-dimensional model, including the ascertained height deviations of a finger from the basic model
- Figure 8 is a schematic representation of one on the three-dimensional
- FIG. 9 shows a diagram of the further course of the method for comparing detected features in two dimensions
- FIG. 10 shows a diagram of the further course of the method for comparing detected features in three dimensions
- FIG. 11 shows a schematic representation of the rolling simulation of a projection of the finger ball surface onto a profile body
- FIG. 12 shows a fingerprint including the entire finger ball up to the nail edges as a result of the method.
- FIG. 1 shows in subfigures a) and b) a finger as object 1, which is held in an arrangement according to the invention.
- the sensors Sj are imaging systems, but in FIG. 1 they are only shown in the form of a CCD and a lens. But you can also use CMOS or general images device.
- a surface 1.1 to be imaged is to be grasped, which extends from one nail edge 1.2 to the other nail edge 1.3 over the finger bale 1.4.
- the fields of view Vj of the sensors S 1 overlap each other.
- each point of the surface 1.1 to be imaged is projected by at least two sensors S, each in a two-dimensional stereo image 3. det.
- FIG. 2 shows a diagram of an embodiment of a method according to the invention for acquiring biometric data.
- Ellipse-shaped elements represent one step of a process
- quadrangular elements are the results after a particular process step.
- the respective lighting situation is stored which contains the information as to which light sources L k were switched on during the recording and, if the light sources can emit different wavelengths of light, the wavelength of the light sources L k .
- a defined specimen P which has defined, circular markings, is mapped once only outside normal operation, in stereo images 3 in step Kl by means of the sensors Sj.
- the aberrations can be, for example, distortions, vignetting, color errors and error pixels.
- transformations are calculated whose application to recorded, two-dimensional stereo images 3 compensates as much as possible the aberrations 8 contained therein.
- the calibration is complete. Also prepared from the CAD design are prepared data of the illumination geometry 7 about the position, the beam direction and the beam cones of the light sources L k .
- Each stereo image 3 is error-corrected in step S2 using the transformations determined in step K2, after which individually error-corrected stereo images 9 are present. Only then can it be useful to use analytical formulas which determine pixel coordinates, inner and outer orientation 10 for each pixel of a 3D visual ray.
- step S3 geometric parameters are determined for a given geometric basic body in order to obtain a model 14 for the further calculations.
- the example shown in FIG. 6 is a rotation body with radii varying along the axis of symmetry. From the silhouettes of the object 1 in error-corrected stereo images 9 of different sensors S; The main axis of the model 14 and a rough specification for the radii of the body of revolution is determined depending on their position on this axis.
- the model 14 further includes the description of a substantially regular grating on the surface of the rotating body.
- the error-corrected stereo images 9 are projected onto the model 14. This makes them more similar to one another than originally, which substantially facilitates the subsequent comparison between pairs of stereo images 3.
- the visual rays of each individual pixel are cut with the model 14 for this purpose. It is only one image per sensor S; necessary, on the one hand either a spielmud linear combination of stereo images 3 several different lighting situations or on the other hand, a simple stereo image 3 of Sen ⁇ Sors S; with a special lighting can be. With five sensors S; then there are five pre-equalized stereo images 12 before.
- the predistorted stereo images 12 are compared in step S 5 at all or very many points of each two sensors with each other to determine korrespondieren ⁇ de points. It makes sense to match only the pre-equalized stereo images 12 of adjacent sensors Sj, so that this process is performed four times at five sensors Sj. As a result, for each adjacent pair of sensors S; two-dimensional stereo parallaxes 16. These stereo parallaxes 16 indicate Sj for each pixel of the one sensor, where in the image of the second sensor Si + i the same point of the object 1 befin ⁇ det. In this process step, the known HVFM process can verwen ⁇ det.
- step S6 height deviations between the model 14 and the surface 1.1 to be imaged are determined. For each discrete point of the surface lattice on the model 14, it is examined in the stereo parallaxes 16 which are in question whether there is a section of two corresponding visual rays along the surface normal in the center of the lattice point. This step is known in the form of the "locus" method As a result, the model 14 is present in the geometry of the surface grid with height deviations 18 parallel to the surface normal in the center of the respective grid point.
- step S7 a selection of the error-corrected stereo image 9 which is most suitable for the current object point is selected from the recorded combinations of sensors S; and lighting situations or from a selection of the most suitable images with subsequent weighting. Criteria are the viewing direction of the respective line of sight to the normal normal, the difference to the respective angle of incidence of the illumination and, optionally, the distance between the respective sensor Sj and surface 1.1 to be imaged. The total reflection at the fingerprint grooves and the resolution are optimized. The pixel is projected from the selected error-corrected stereo images 9 onto the reconstructed model 14 with height deviations 18.
- a rolling of the model 14 on a flat surface is subsequently simulated in step S8a, whereby a two-dimensional image 22 which is as possible as possible in the rolling process during conventional production of the fingerprint is produced.
- step S8b the model 14 with height deviations 18 and the projected surface image 19 is transformed into a 3D texture, which can be processed and compared in further process steps.
- FIG. 3 shows in subfigures a) and b) an arrangement with five sensors Sj. In between, a specimen P with defined markings M is placed. The markings are shown dark on a light background, but can also be provided brightly on a dark background. The middle levels E 1 and E 2 of the fields of view of the sensors S 1 and S 2 are shown.
- FIG. 4 shows the stereo images 3 of the sensor S 1 and S 2 from the recording of the test specimen P.
- FIG. 5 shows the stereo parallaxes which were determined from the stereo images 3.
- FIG. 6 shows in subfigures a) and b) a basic body G in the form of a rotational body with varying radii.
- FIG. 7 shows a cross-section of a model 14, which consists of the main body G and, to this end, surface-normal height deviations 18.
- FIG. 8 shows the projected surface image 19 in gray scale on the model 14 with height deviations 18.
- FIG. 9 shows further method steps for comparing detected finger surfaces in Correlation-Based Fingerprint Matching or Minutia-Based Fingerprint Matching, wherein conventional, two-dimensional fingerprint representations are used.
- FIG. 10 An extension to the three-dimensional case is shown in FIG. 10 in analogous method steps.
- FIG. 11 shows by way of example a semi-cylindrical profile body for simulating the rolling movement as an orthogonal projection of the surface image 19 on a curved surface whose coordinates are converted to a flat surface.
- FIG. 12 shows by way of example a result of the rolling simulation.
- the method steps which generate and compare three-dimensional minutiae and the three-dimensional texture can also be used independently of the other method steps with otherwise produced three-dimensional images of skin surfaces.
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- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Image Input (AREA)
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Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112004003011T DE112004003011A5 (de) | 2004-08-25 | 2004-08-28 | Verfahren und Anordnung zur optischen Aufnahme biometrischer Daten |
| US10/515,102 US7606395B2 (en) | 2004-08-25 | 2004-08-28 | Method and arrangement for optical recording of data |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2004001886 | 2004-08-25 | ||
| DEPCT/DE2004/001886 | 2004-08-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006021165A1 true WO2006021165A1 (de) | 2006-03-02 |
Family
ID=34959049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2004/002026 Ceased WO2006021165A1 (de) | 2004-08-25 | 2004-08-28 | Verfahren und anordnung zur optischen aufnahme biometrischer daten |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US7606395B2 (de) |
| DE (2) | DE112004003011A5 (de) |
| WO (1) | WO2006021165A1 (de) |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7214953B2 (en) * | 2003-09-05 | 2007-05-08 | Authentec, Inc. | Multi-biometric finger sensor including optical dispersion sensing pixels and associated methods |
| EP1920383A4 (de) * | 2005-09-06 | 2010-12-22 | Identification International I | Aloritmische korrektur der bildverformung in einem fingerabdruck bildsystem |
| US7660442B2 (en) * | 2006-09-01 | 2010-02-09 | Handshot, Llc | Method and system for capturing fingerprints, palm prints and hand geometry |
| US8054500B2 (en) * | 2006-10-10 | 2011-11-08 | Hewlett-Packard Development Company, L.P. | Acquiring three-dimensional structure using two-dimensional scanner |
| FR2927713B1 (fr) * | 2008-02-14 | 2011-08-26 | Sagem Securite | Dispositif d'acquisition d'empreintes digitales a la volee. |
| US10018464B2 (en) * | 2008-05-06 | 2018-07-10 | Flashscan3D, Llc | System and method for structured light illumination with frame subwindows |
| EP2513599B1 (de) * | 2009-12-18 | 2015-04-22 | VITO NV (Vlaamse Instelling voor Technologisch Onderzoek NV) | Georeferenzierungsdaten mit Mehrfachspektrum |
| US8391590B2 (en) * | 2010-03-04 | 2013-03-05 | Flashscan3D, Llc | System and method for three-dimensional biometric data feature detection and recognition |
| DE102010016109A1 (de) | 2010-03-24 | 2011-09-29 | Tst Biometrics Holding Ag | Verfahren zum Erfassen biometrischer Merkmale |
| EP2966614A4 (de) * | 2013-03-06 | 2016-11-16 | Nec Corp | Vorrichtung zur umwandlung von fingerabdruckbildern, system zur umwandlung von fingerabdruckbildern, verfahren zur umwandlung von fingerabdruckbildern und programm zur umwandlung von fingerabdruckbildern |
| WO2015039210A1 (en) * | 2013-09-18 | 2015-03-26 | Matter and Form Inc. | Device, system and method for three-dimensional modeling |
| US9773151B2 (en) | 2014-02-06 | 2017-09-26 | University Of Massachusetts | System and methods for contactless biometrics-based identification |
| US9734381B2 (en) | 2014-12-17 | 2017-08-15 | Northrop Grumman Systems Corporation | System and method for extracting two-dimensional fingerprints from high resolution three-dimensional surface data obtained from contactless, stand-off sensors |
| JP6575060B2 (ja) * | 2014-12-19 | 2019-09-18 | カシオ計算機株式会社 | 描画装置、描画装置の動作制御方法及び描画装置の動作制御プログラム |
| WO2016154378A1 (en) | 2015-03-25 | 2016-09-29 | Cressputi Research Llc | Electronic device including pin hole array mask above optical image sensor and related methods |
| US10282582B2 (en) * | 2015-09-30 | 2019-05-07 | Apple Inc. | Finger biometric sensor for generating three dimensional fingerprint ridge data and related methods |
| US10885299B2 (en) | 2016-05-23 | 2021-01-05 | Apple Inc. | Electronic device including pin hole array mask above optical image sensor and laterally adjacent light source and related methods |
| US11239275B2 (en) | 2016-05-23 | 2022-02-01 | Apple Inc. | Electronic device including processing circuitry for sensing images from spaced apart sub-arrays and related methods |
| US10506926B2 (en) | 2017-02-18 | 2019-12-17 | Arc Devices Limited | Multi-vital sign detector in an electronic medical records system |
| US10492684B2 (en) | 2017-02-21 | 2019-12-03 | Arc Devices Limited | Multi-vital-sign smartphone system in an electronic medical records system |
| US10602987B2 (en) | 2017-08-10 | 2020-03-31 | Arc Devices Limited | Multi-vital-sign smartphone system in an electronic medical records system |
| US10485431B1 (en) | 2018-05-21 | 2019-11-26 | ARC Devices Ltd. | Glucose multi-vital-sign system in an electronic medical records system |
| WO2021247300A1 (en) | 2020-06-01 | 2021-12-09 | Arc Devices Limited | Apparatus and methods for measuring blood pressure and other vital signs via a finger |
| JP2025521184A (ja) | 2022-06-03 | 2025-07-08 | アーク デヴァイシズ リミテッド | 手指を介して血圧及び他のバイタルサインを測定する装置及び方法 |
| DE102024130811A1 (de) * | 2024-10-22 | 2026-04-23 | IDloop GmbH | Positionierungselememt, vorrichtung zur kontaktlosen aufnahme von biometrischen merkmalen und verfahren zur kontaktlosen aufnahme von biometrischen merkmalen |
Citations (1)
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| DE10123561A1 (de) * | 2001-05-15 | 2001-10-18 | Thales Comm Gmbh | Verfahren zur Personenidentifikation mittels dreidimensionaler Fingerkuppenanalyse |
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| DE3424955A1 (de) | 1984-07-06 | 1986-01-16 | Siemens Ag | Anordnung zum erfassen von fingerpapillaren |
| DE19516662A1 (de) | 1995-05-05 | 1996-11-14 | Fraunhofer Ges Forschung | Identifizierung dreidimensionaler Objekte, insbesondere Personen |
| US5963664A (en) | 1995-06-22 | 1999-10-05 | Sarnoff Corporation | Method and system for image combination using a parallax-based technique |
| JP3316725B2 (ja) * | 1995-07-06 | 2002-08-19 | 三菱電機株式会社 | 顔画像撮像装置 |
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| AU9663098A (en) * | 1997-09-23 | 1999-04-12 | Enroute, Inc. | Generating three-dimensional models of objects defined by two-dimensional image data |
| US6466686B2 (en) | 1998-01-07 | 2002-10-15 | International Business Machines Corporation | System and method for transforming fingerprints to improve recognition |
| DE19818229A1 (de) | 1998-04-24 | 1999-10-28 | Hauke Rudolf | System zur berührungslosen Hand- und Fingerlinien-Erkennung |
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| US6125197A (en) * | 1998-06-30 | 2000-09-26 | Intel Corporation | Method and apparatus for the processing of stereoscopic electronic images into three-dimensional computer models of real-life objects |
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| DE10103622A1 (de) | 2001-01-27 | 2002-08-08 | Tst Touchless Sensor Technolog | Vorrichtung zur Erfassung von Fingerabdrücken |
| DE10153808B4 (de) | 2001-11-05 | 2010-04-15 | Tst Biometrics Holding Ag | Verfahren zur berührungslosen, optischen Erzeugung von abgerollten Fingerabdrücken sowie Vorrichtung zur Durchführung des Verfahrens |
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| US20040008875A1 (en) | 2002-07-09 | 2004-01-15 | Miguel Linares | 3-D fingerprint identification system |
-
2004
- 2004-08-28 DE DE112004003011T patent/DE112004003011A5/de not_active Withdrawn
- 2004-08-28 US US10/515,102 patent/US7606395B2/en active Active
- 2004-08-28 WO PCT/DE2004/002026 patent/WO2006021165A1/de not_active Ceased
- 2004-11-05 DE DE102004053927A patent/DE102004053927A1/de not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10123561A1 (de) * | 2001-05-15 | 2001-10-18 | Thales Comm Gmbh | Verfahren zur Personenidentifikation mittels dreidimensionaler Fingerkuppenanalyse |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112004003011A5 (de) | 2007-08-09 |
| US7606395B2 (en) | 2009-10-20 |
| US20060045316A1 (en) | 2006-03-02 |
| DE102004053927A1 (de) | 2006-03-02 |
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