EP2622539A1 - Procédé et dispositif de reconnaissance sans contact de caractéristiques biométriques - Google Patents

Procédé et dispositif de reconnaissance sans contact de caractéristiques biométriques

Info

Publication number
EP2622539A1
EP2622539A1 EP11764524.2A EP11764524A EP2622539A1 EP 2622539 A1 EP2622539 A1 EP 2622539A1 EP 11764524 A EP11764524 A EP 11764524A EP 2622539 A1 EP2622539 A1 EP 2622539A1
Authority
EP
European Patent Office
Prior art keywords
sensor
pattern
biometric features
distance
body parts
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
Application number
EP11764524.2A
Other languages
German (de)
English (en)
Inventor
Alexander Lenhardt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Icognize GmbH
Original Assignee
Icognize GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE102010041497A external-priority patent/DE102010041497A1/de
Priority claimed from DE102011051610A external-priority patent/DE102011051610A1/de
Application filed by Icognize GmbH filed Critical Icognize GmbH
Publication of EP2622539A1 publication Critical patent/EP2622539A1/fr
Ceased legal-status Critical Current

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
    • G06V40/1312—Sensors therefor direct reading, e.g. contactless acquisition
    • 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
    • G06V40/60—Static or dynamic means for assisting the user to position a body part for biometric acquisition
    • G06V40/67—Static or dynamic means for assisting the user to position a body part for biometric acquisition by interactive indications to the user

Definitions

  • the present invention relates to a device for non-contact detection of biometric features, comprising a housing receiving a biometric sensor, which presents a sensor surface that can detect biometric features of a body part arranged at a distance in front of the sensor surface without contact.
  • the present invention also relates to a method for non-contact detection of biometric features of body parts, wherein a body part at a distance from a sensor surface for detection by the sensor is presented.
  • biometric features are in particular fingerprints, images of the eye iris and z.
  • images of the eye iris and z As well as infrared images of the hand veins, although fingerprints generally do not fall under the category "contactless”, but in principle could also be detected without contact with the help of suitable optical detection devices.
  • Biometric data is increasingly being used to identify and authenticate individuals, such as cell phones or personal computers or laptops.
  • touch fields or touch fields are mostly still used, wherein the user can place one or more fingers of a hand on such a field or can lead across this, wherein the fingerprint is scanned.
  • the eye iris can be scanned without contact with a considerable distance of the sensor surface of the eye surface, but ultimately this method is not really contactless, because the user is forced in practice to create a reliable recording, his forehead or other facial parts on a suitable Position the support so that the eye scanner can detect the iris for a sufficient time at a safe scannable distance.
  • palm vein scanner begin to prevail more and more, in which by infrared sensors Image of the venous structure in the hand of a person is detected, which has a pronounced degree of individuality.
  • the person to be authorized would only need to hold his hand in a certain distance, typically 5 to 20 cm, in front of a sensor surface, which is located on or in a housing, ideally without touching the housing.
  • this also causes problems since many persons can not estimate the correct distance and / or do not keep their hand sufficiently quiet, so that in practice the need for using hand supports has proven to be reliable even with these devices. which ensure that the user holds his hand in front of the sensor surface for a sufficient length of time and sufficiently quietly.
  • the present invention seeks to provide a method and apparatus for detecting biometric features with the features mentioned that work reliable contactless in everyday use.
  • this object is achieved in that means are provided for projecting an optical pattern changing with the distance to the sensor surface onto a surface which is movable together with the body part.
  • this object is achieved in that for determining a suitable detection distance, an optical pattern is projected into the space in front of the sensor surface that changes with change of the distance from the sensor surface.
  • the method according to the invention With the help of the method according to the invention and the corresponding device it is possible to provide the respective user during the detection of the biometric features feedback on the correct position of the body part to be detected such.
  • B. his hand so that the user has thereby an immediate control over the process of feature detection.
  • the user observes the pattern projected on a surface of the body part or a moving surface as the body part is brought in, and holds the body part, for example, his hand, so that the pattern takes on a predetermined appearance characteristic of the proper distance and position , As the pattern changes with distance to the sensor surface, the pattern at the "right” or “desired” distance has an appearance that is different from the appearance at other distances not intended for detection.
  • the user therefore only has to adjust the distance between the body part and the sensor surface in such a way that the relevant desired pattern appears on the surface of the body part or a moving surface.
  • This desired pattern (and possibly also the deviating patterns at undesired intervals) could be presented to the user, for example, on a scoreboard or instruction manual and the user can then create the desired pattern on the corresponding surface of the body part by varying the distance to the sensor surface. It is not a mm-exact silence required, but it is enough if the user his hand for 1 second within a tolerance deviation of z. B. ⁇ 10 mm around the optimal distance keeps around.
  • the easily recognizable, characteristic pattern is a great help to the user and therefore speeds up the process considerably, since the number of failed attempts compared to other unsupported procedures drastically decreases and the process itself is accelerated, because the user due to the optical Feedback about his visual perception much faster finds the right position of the body part.
  • the pattern to be set may, for example, be shown or displayed next to the sensor device for explanation. Once the projected pattern on the surface has assumed the specified shape, the person knows that they have positioned their hand in the correct location. It would also be conceivable for the projected pattern to be detected automatically by a second recognition device and for the persons to be identified to be informed about the position of their hand, for example via acoustic feedback signals. Such an expanded recognition device would be suitable for visually impaired people, for example. In the following, merely by way of example and without limitation, the hand of the human body will be considered as the body part on which the biometric features are detected. It is understood, however, that the corresponding features of the invention may be used identically or analogously also in the detection of other biometric features. For example, in the detection of the eye iris, the pattern could be projected onto the forehead or root of the nose of a user, who can observe this in a mirror and adjust the distance accordingly.
  • the inventive method and the corresponding device work completely contactless and thus eliminate the otherwise existing risk of contamination when using the same device by numerous people, such as access controls to company premises, security areas, etc.
  • the means for projecting the optical pattern are preferably provided adjacent to the sensor surface, which facilitates the projection of the pattern onto a palm of the hand.
  • the means for projecting the optical pattern are provided on the housing.
  • the means for projecting the optical pattern are provided along the circumference of the sensor surface and at a distance therefrom.
  • the means for projecting the optical pattern along the circumference of the sensor surface are arranged distributed at approximately equal angular intervals around the center of the sensor surface, because then the pattern has a fast and uniformly varying distance dependence with respect to all pattern elements.
  • a variant is preferred in which the means for the projection of the optical pattern each generate a light beam, wherein these multiple beams are not all parallel.
  • a plurality of such devices accordingly generate a plurality of spots on a projection surface, the relative arrangement of which defines a distance-dependent pattern unless all the light rays are parallel.
  • the devices for the projection of the optical pattern may also comprise optical collimator devices. These may be in the simplest form as tubular optical conductors, glass fibers or the like.
  • the means for projection of the optical pattern may in particular comprise light-emitting diodes which form the sources of light beams.
  • the means for projecting the optical pattern may comprise laser diodes.
  • a variant is also feasible in which a light beam emanating from a single source is split by optical refraction into a plurality of beams, which are then projected onto a body part from different points.
  • the means for projecting the optical pattern are respectively assigned to the corners and centers of the sides of the sensor rectangle.
  • the means for projecting the optical pattern are arranged and configured such that the light beams emanating from you generate a characteristic pattern in a distance desired for the acquisition of a biometric feature that differs from the pattern generated at other distances mere human eye is different.
  • a machine differentiation of the patterns at different distances is certainly possible, but this would require further, for example, acoustic feedback devices to achieve the object according to the invention in order to allow the user a contactless adjustment of the distance between hand and sensor surface.
  • the latter would be useful, for example, when used by Sehbe hinderte.
  • the pattern becomes particularly simple and easily distinguishable at various distances when the means for projecting the optical pattern are arranged and configured such that the light beams emanating from them cross at most three and preferably only one common point in the space in front of the sensor surface.
  • the crossing points are preferably at the desired distance and the pattern is then characterized by a minimum number of points, in the preferred case a single point, while at other distances the pattern is formed by a larger number of points.
  • the patterns for generating the patterns are aligned in such a way that the pattern produced at a desired spacing is located in front of the sensor surface in the region of a normal starting from the center of the sensor surface.
  • the projection of the pattern can alternatively take place on a side facing the sensor surface or on the side facing away from the sensor surface or both or other sides of the body part.
  • the pattern is projected in the form of a plurality of light beams onto the skin surface of the body part or a co-moving surface (for example of a glove).
  • a co-moving surface for example of a glove.
  • a secondary sensor detects the pattern projected onto the hand surface and aligns it with a desired, stored pattern, wherein it can also emit an acoustic signal to give the user feedback about the correct positioning.
  • Another secondary sensor may also be useful, for example, to detect whether and when a body part enters the detection area of the primary sensor for the biometric features in order, for example, to put into operation only the means for generating the pattern and / or the primary sensor, to save energy for sensor operation in this way.
  • the light rays emanating from the means for generating the same intersect at angles of more than 20 °, preferably more than 40 °.
  • the maximum angle of intersection of two light beams is of course below 180 °, preferably below 130 ° and in particular below 100 °.
  • the intersection angles of pairs of light rays in general, but are preferably all within the above-defined areas.
  • a sensor surface is surrounded by 8 sources of light rays located at the corners and at the center of the sides of a (imaginary) rectangle, respectively.
  • this rectangle could have dimensions of 8 x 12 cm 2 , so that as a result the minimum distance between two light sources is 4 cm (half of 8 cm), while the maximum distance of a rectangle's diagonal (64 + 144) is 1 2 cm is approximately (14.5 cm).
  • the pattern or its light beams may experience a color change, for example, if the primary sensor has detected or recognized or not recognized the biometric feature.
  • a device designed specifically for detecting a vein pattern, in particular the vein pattern of the human hand.
  • the hand vein structure because of its very high discriminability, has a high efficiency in detecting individual persons, it may still cause problems with the infrared images when background radiation of the environment leads to a strong background noise of the sensor signal. This problem arises in particular in the outdoor use of a Handvenensensors, for example, next to a building entrance.
  • a possible source of background radiation interfering with the detection of the vein structure would be solar radiation in this case.
  • a further object of the present invention is therefore to minimize interference of the measurement signal due to background radiation by a suitable embodiment of the detection device.
  • the housing has a shading section, which extends starting from the radiation-receiving surface of the sensor such that it at least partially shields the sensor against electromagnetic radiation falling on the housing.
  • the shading section need not be transparent to electromagnetic radiation in the frequency range detected by the sensor.
  • the sensor is a technical component that can detect electromagnetic radiation in a defined frequency range. Since a vein structure is to be detected, which emits heat radiation in the infrared range, the detected frequency range is therefore the infrared range.
  • the sensor For receiving incident infrared radiation, the sensor has a surface which absorbs this radiation as completely as possible. The infrared radiation incident on this surface constitutes the input signal and is converted by the sensor into an electrical output signal comprising information about the two-dimensional intensity pattern of incident infrared radiation on the surface and thus the vein structure causing this intensity pattern of infrared radiation.
  • the transparent portion of the housing is a portion that is transparent to infrared radiation.
  • this section typically consists of a different material, or a different combination of materials than the rest of the housing, the invention is at least partially impermeable to infrared radiation in the form of Abschattungsabiteses.
  • the transparent portion simply consists of a recess in the housing, so that it is permeable to electromagnetic radiation in each frequency range and in particular for those in the infrared range.
  • the transparent section can also consist, for example, of transparent quartz glass for infrared radiation.
  • D is the maximum distance from the highest point of the shading section across the plane E to an edge of the sensor surface.
  • the shading section of the housing should expand starting from the sensor surface in the shape of a truncated pyramid.
  • the shading section expands outward from the sensor surface in the manner of a truncated cone. It is particularly advantageous if the sensor surface enclosing the inner surfaces of the shading portion of the housing with the plane E of the Sen sororober II an angle of 30 ° to 60 °, preferably from 40 ° to 50 ° and most preferably include 45 °.
  • An additional reduction of the background radiation, in particular of the solar radiation, can be achieved in that the sensor surface in the mounted state of the device on a holding element essentially faces the ground. Due to this orientation away from the main source of interference outside buildings, i. the sun, the intensity of the interference signals can be significantly reduced.
  • the device for the projection of the electromagnetic radiation pattern generate light beams in the visible frequency range. Due to the reflection of the light rays on the palm of the hand, the projected radiation pattern can easily be recognized by the human eye.
  • the device for projection of the optical pattern should be arranged and configured such that the light beams emanating from it generate a characteristic electromagnetic radiation pattern in a distance which is advantageous for the reception of a vein structure.
  • This radiation pattern should be different from the pattern produced at other distances for the naked human eye.
  • the desired characteristic radiation pattern has settled, for example, on the palm of her hand, the person to be identified knows that her hand is in the correct position for the measurement.
  • Such a radiation pattern can be realized particularly simply by the fact that the light beams emanating from the device for projection intersect in front of the sensor surface in a maximum of three or preferably only one common point in the space. If the point of intersection of the light beams is at a distance to the sensor surface which is preferred for the measurement, then characterized the desired radiation pattern by an easily recognizable minimum number of projected points. In the simplest case, this is then a single point.
  • the device for pattern generation is ideally oriented such that the characteristic electromagnetic radiation pattern to be generated at the desired distance is located in front of the sensor surface in the region of a normal from the center of gravity of the sensor surface.
  • the device for the projection of the electromagnetic radiation pattern in the visible frequency range can be provided laterally next to the sensor surface. For a compact design of the device for non-contact detection of hand vein structures, it is advisable to install the device for the projection of an electromagnetic radiation pattern in the visible frequency range on the housing.
  • the most symmetrical arrangement of devices for the projection of the electromagnetic radiation pattern in the visible frequency range is recommended.
  • the projected pattern changes, regardless of which direction the hand is pivoted out of the parallel plane. Therefore, it is advantageous if a plurality of devices along the circumference of the sensor surface are arranged distributed at approximately equal angular intervals around the center of gravity of the sensor surface.
  • a further advantage is when the device for the projection of the electromagnetic radiation pattern in the visible frequency range comprises an optical collimator device.
  • the spread of the light beams can be reduced, which makes the projected radiation pattern sharper and the distance determination more precise.
  • a device according to the invention for contactless detection of palm vein structures can be produced in a particularly simple, cost-effective and low-maintenance manner if the device for projecting the electromagnetic radiation pattern in the visible frequency range is a light-emitting diode.
  • FIG. 1 shows a palm vein scanner with a palm contour indicated schematically before it
  • FIG. 2 shows an exemplary beam path for generating a light beam pattern
  • FIG. 3 shows the desired palm position with respect to the pattern
  • Figure 4 shows another variant with means for generating light rays, which are independent of the housing of the Handvenensensors.
  • FIG. 5 shows a device according to the invention for non-contact venous structure detection
  • FIG. 6 shows detailed views of the shading section of the device from FIG. 1,
  • FIG. 7 shows a device according to the invention in the assembled state
  • Figure 9 shows a preferred arrangement of a hand relative to the device according to the invention.
  • FIG. 1 shows a housing 10 in which a sensor 1 is located, which presents a sensor surface 2 on the front surface of the housing 10.
  • the sensor 1 is an infrared sensor which is capable of detecting a pattern formed by the veins of a hand 3, which can be evaluated by means of a corresponding evaluation device and compared with stored patterns.
  • the light beams directed in FIG. 2 generally produce a pattern of 4 points appear on the housing 10 facing the palm of the hand as bright spots.
  • the light beams 5 preferably have a blue hue in order not to disturb the infrared measurement of the hand veins as such.
  • the four light beams 5 are aligned so that they intersect at a point 7 located at a distance d to the sensor surface 2 level 6.
  • the four rays of light emanating from points or holes that lie on the extended diagonal of the sensor surface and at the same distance from the center of the sensor surface are generally sufficient to generate the corresponding pattern. In the embodiments, however, further holes for the exit of corresponding light beams are shown, which are respectively assigned to the sides or edges of the sensor surface in the middle.
  • the light beams could also emanate from these openings or light sources and they could also be provided in addition to the light beams 5 already shown and intersect at the same point 7 in which the illustrated beams 5 intersect.
  • the sensor surface 2 may be, for example, specularly or partially specular, so that the user can easily recognize whether a corresponding single point of light forms on his palm, or if several separate points of light or a larger, consumed light spot have formed, from which the User can recognize that he still has to change the distance therefrom to the sensor surface 2 something, whether to detect the smallest possible and circular as possible light spot on his hand, so that recorded by the sensor 1 recorded and registered or compared with stored patterns can be.
  • the distance d between the plane 6 with the point of intersection 7 of the light beams and the sensor surface 2 is in a preferred variant about 5 cm, so that the user can keep his hand 3 at a considerable distance from the housing 10 and to the sensor surface 2 and the measurement is thus completely contactless.
  • the light rays 5 could in principle also generate any other pattern on a palm or other surface moving together with the palm, with a particular characteristic pattern forming at the desired distance d, for example is given by means of a display board.
  • the variant shown shows a particularly simple and intuitively fast pattern to be detected in the form of a single, circular as possible light spot, which widens when changing the distance in the direction of the corners of a square surrounding the light spot and finally dissolves into four separate points.
  • Such a light spot is particularly easy to identify.
  • the corresponding light rays do not impinge on the palm of the hand from the side of the sensor surface 2, but impinge, for example, on the back of the hand from the opposite side.
  • the user could adjust the distance of the hand to the sensor surface 2 by observing the pattern on the back of the palm.
  • this would require additional components half of the actual sensor housing require and the arrangement of the light sources or on the housing 10 to the sensor 1 around is preferred. If the sensor surface 2, for example, 3 x 3 cm 2 and the light sources or LEDs in the corner regions of the sensor surface 2 is a square of z. B.
  • the light-emitting diodes may be arranged in tubular depressions 4, the walls of which reflect the light emanating from the LEDs and sufficiently bundle, whereby the light-emitting diodes themselves in the form of their transparent housing optical aids for generating a beam-like light beam, which also in the desired distance the formation of a sufficiently small and sharp light spot leads.
  • FIG. 3 again shows the housing 10 with the sensor 1 and the diagrammatically reproduced outlines of a hand 3, which is arranged so that the crossing point of the four illustrated light beams is imaged on the palm of the hand, which the user either in a reflective surface of the sensor 2 or but can recognize and control one of the mirror surfaces for this purpose, for example, edge surfaces 8, which surround the sensor surface 2.
  • FIG. 4 shows a further variant with a sensor 1 'in a corresponding housing, the light beams or the sources of the light beams however not being arranged in the housing of the sensor itself, but somewhere in its surroundings, but exactly so that the light from The pattern generated by the light beams or the pattern which forms at a desired distance from the sensor is located approximately centrally in front of the sensor surface 2.
  • the device according to the invention By means of the device according to the invention and the corresponding method, it is possible to carry out an actually non-contact yet reliable and reliable detection of biometric features, for example the vein structure of a hand, by projecting a pattern onto the body part to be arranged at the correct distance with corresponding optical devices will allow the user to vary by changing the distance of the body part to the sensor surface 2 so as to set the correct distance.
  • the system can then, for example, by changing the color of the light sources, such. B. the light-emitting diodes that generate the pattern, a successful measurement or authentication or even a failed authentication (for example, green light for "detected and authorized” and red for "not detected” or "unauthorized”).
  • FIG. 5 shows a device according to the invention for non-contact venous structure detection.
  • This consists of an infrared radiation-impermeable housing 13 with flat surfaces, which surrounds a sensor 1 1 with a sensor surface 12 for receiving electromagnetic radiation in the infrared range.
  • the recess could be covered in an advantageous modification of the present embodiment for the protection of the sensor 1 1 with a transparent material for infrared radiation, for example quartz glass.
  • the housing 13 has a shading section 17 which extends outgoing from the sensor surface 12 over the plane E defined by the sensor surface 12. At the same time, the shading section 17 shadows the sensor 11 at least partially against electromagnetic radiation 18 falling on the housing 13.
  • the sensor surface 12 is bordered by flat inner surfaces 19 of the shading portion 17 of the housing 13.
  • the housing 13 For mounting the device to a holding element, for example on a wall 17, the housing 13 has a flat rear side.
  • the plane E includes with the back of the housing 13 at an acute angle.
  • the sensor surface 12 is square.
  • the shading portion 17 is formed by webs, which on the receiving side on the plane E protruding and on all four sides of the square sensor surface 12 includes. In each case, a side surface of the webs is thus identical to one of the inner surfaces 19 of the shading portion 17 of the housing 13.
  • the shading portion 17 widens here in a truncated pyramid outward. In the present case, due to the square configuration of the sensor surface 12, all four webs have identical shape and dimensions. In addition, opposing web burrs 23 each extend parallel to each other. In the detail view in FIG.
  • each of the housing webs has a triangular cross section in each case.
  • the illustrated sectional view is perpendicular to two parallel web burrs 23.
  • the vertical height of the webs above the plane E is denoted by H.
  • D designates according to the definition given above in this specific case, the direct distance between an intersection point of two web ridge and the opposite corner of the sensor surface. 2
  • FIG. 7 An inventive device for non-contact detection of a vein structure is shown in Figure 7 in the assembled state on a holding element, here a wall 20.
  • This wall 20 advantageously has a wall recess 21 below the device to allow a centered positioning of a hand 16 under the sensor 1 1.
  • the housing 13 would have to be designed in such a way that a sufficient distance of the sensor 11 to the wall 20 is ensured, so that there is sufficient space for a complete positioning, for example, of a hand 16 under the sensor 11 , In this case, however, the device would have to be dimensioned significantly larger, which may prove to be disadvantageous from a practical, financial and aesthetic point of view.
  • the angle of inclination of the sensor surface 12 to the back of the housing 13 would have to be sharpened. However, this would lead to problems with the shadowing of the sensor surface 12, since more disturbing background radiation could be incident on the sensor surface 12 laterally.
  • the arrow 18 indicates the direction of incidence of the sun's rays, here by way of example perpendicularly from above. It can be seen that the sensor surface 12 of the device is oriented approximately completely away from the incident sunrays 18 in the illustrated embodiment. As a result, it can be ensured that hardly any solar radiation 18 directly impinges on the sensor surface 12. Stray radiation, which is reflected, for example, from the ground, is shielded by the shading portion 17 of the housing 13. In FIG. 8, the device from FIG.
  • this figure shows the radiation pattern 15 generated by a device for projecting an electromagnetic radiation pattern in the visible frequency range, wherein the generated individual beams intersect at a fixed point of intersection 22 which has a perpendicular distance to the sensor surface 12 required for the recognition of the vein structure ,
  • the radiation pattern at all distances except the preferred one consists of several, in the case shown four points.
  • a hand 16 in a preferred position relative to the sensor surface 12 is shown in FIG.
  • the hand 16 is located exactly at the intersection 21 of the beams 15 and thus in an advantageous for detection vertical distance to the sensor surface 12.
  • the perceived in this position by the person to be recognized radiation pattern 15 on her hand surface is a single point 21, which should be located substantially in the middle of the palm of the hand.
  • the hand 16 is moved out of this position, it disintegrates the hand 16 projected radiation patterns from a single point 21 back into multiple points.
  • the person to be identified knows that his hand 16 is located in a distance which is not suitable for detecting the vein structure or in a disadvantageous orientation relative to the sensor 11.

Abstract

La présente invention concerne un dispositif de reconnaissance de caractéristiques biométriques de parties corporelles, comprenant un boîtier (10) qui héberge un capteur biométrique (1) et qui présente une surface de capteur (2) qui peut reconnaître sans contact des caractéristiques biométriques d'une partie corporelle (3) disposée à distance devant la surface de capteur. L'invention vise à fournir un procédé et un dispositif de reconnaissance de caractéristiques biométriques qui a les caractéristiques mentionnées et fonctionne sans contact de manière fiable en service quotidien. A cet effet, des appareils de projection d'un motif optique changeant avec la distance (d) par rapport à la surface de capteur (2) sont disposés sur une surface (3a) pouvant bouger conjointement avec la partie corporelle (3).
EP11764524.2A 2010-09-28 2011-09-27 Procédé et dispositif de reconnaissance sans contact de caractéristiques biométriques Ceased EP2622539A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102010041497A DE102010041497A1 (de) 2010-09-28 2010-09-28 Verfahren und Vorrichtung zur berührungslosen Erfassung biometrischer Merkmale
DE102011051610A DE102011051610A1 (de) 2011-07-06 2011-07-06 Venensensor mit Abschirmung
PCT/EP2011/066721 WO2012041826A1 (fr) 2010-09-28 2011-09-27 Procédé et dispositif de reconnaissance sans contact de caractéristiques biométriques

Publications (1)

Publication Number Publication Date
EP2622539A1 true EP2622539A1 (fr) 2013-08-07

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EP11764524.2A Ceased EP2622539A1 (fr) 2010-09-28 2011-09-27 Procédé et dispositif de reconnaissance sans contact de caractéristiques biométriques

Country Status (3)

Country Link
EP (1) EP2622539A1 (fr)
DE (1) DE202011109909U1 (fr)
WO (1) WO2012041826A1 (fr)

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CH707230B1 (de) 2012-11-20 2016-02-29 Frank Türen Ag Türsystem mit berührungsloser Zutrittskontrolle und berührungsloser Türbedienung.
EP3264321A1 (fr) 2016-06-29 2018-01-03 Rainer Philippeit Procédé et dispositif destinés à détecter sans contact une structure de veine d'une partie corporelle
CH713061B1 (de) * 2016-10-19 2021-03-31 Smart Secure Id Ag System und Verfahren zur berührungslosen biometrischen Authentifizierung.
DE102021111422A1 (de) * 2021-05-04 2022-11-10 IDloop GmbH Vorrichtung und Verfahren zur kontaktlosen Aufnahme von Finger- und Handabdrücken

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FR2897966B1 (fr) * 2006-02-24 2008-05-16 Sagem Defense Securite Biodetecteur sans contact
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