EP3117407A1 - Dispositif et procédé de contrôle d'au moins un élément de sécurité d'un document de sécurité - Google Patents

Dispositif et procédé de contrôle d'au moins un élément de sécurité d'un document de sécurité

Info

Publication number
EP3117407A1
EP3117407A1 EP15709880.7A EP15709880A EP3117407A1 EP 3117407 A1 EP3117407 A1 EP 3117407A1 EP 15709880 A EP15709880 A EP 15709880A EP 3117407 A1 EP3117407 A1 EP 3117407A1
Authority
EP
European Patent Office
Prior art keywords
angle
illumination
security
security document
image capture
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.)
Pending
Application number
EP15709880.7A
Other languages
German (de)
English (en)
Inventor
Thomas Hendzlik
Jens Lamprecht
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.)
Bundesdruckerei GmbH
Original Assignee
Bundesdruckerei 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
Application filed by Bundesdruckerei GmbH filed Critical Bundesdruckerei GmbH
Publication of EP3117407A1 publication Critical patent/EP3117407A1/fr
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
    • G07D7/12—Visible light, infrared or ultraviolet radiation
    • G07D7/121—Apparatus characterised by sensor details

Definitions

  • the invention relates to an apparatus and a method for testing at least one security element of a security document.
  • Security documents generally contain a plurality of security elements, it being possible to check a authenticity of the security document as a function of predetermined properties of these security elements.
  • Known security elements are e.g. et al Holograms, watermarks and security threads.
  • DE 10 2012 21 1 076.3 discloses a device for document detection, wherein the device comprises at least one device for the
  • a fluoroscopy device is disclosed, wherein the at least one image acquisition means and the at least one
  • Transmissive device are arranged to each other such that light can be detected by the at least one device for image capture, which is irradiated by the at least one fluoroscopy device through the support surface.
  • DE 10 2012 219 905.5 discloses a method for testing a security element of a security document. In this case, at least a first subregion of the security element with white light radiation is under a first
  • Modern security documents can also have a painted surface.
  • a painted surface can make optical detection difficult due to unwanted reflections. Therefore, it is usually required that a predetermined one of a lighting direction and an optical detecting direction
  • Illuminate illumination angles wherein the illumination angle can be defined relative to a surface of the security document to be tested or to a central optical detection direction of an image detection direction.
  • a device is proposed for checking at least one security element of a security document.
  • a security document may be any document that is a physical entity that is protected against unauthorized creation and / or falsification by security features or elements.
  • Security features are features that make it difficult to falsify and / or duplicate compared to a simple copy at least. Physical entities that include or form a security feature may be referred to as security features.
  • a security document may include multiple security features and / or security elements. As defined herein, a security document is always a security element. Examples of
  • Security documents which also include value documents representing a value, include, for example, passports, identity cards, driving licenses, identity cards, access control cards, health insurance cards, banknotes,
  • Postage stamps bank cards, credit cards, smart cards, tickets and labels.
  • the security document can have several, so at least two
  • the security document may have a hologram as a first security element.
  • a hologram is understood to mean an element of the security document which can produce a representation by means of holography.
  • the term hologram includes, among others, transmission holograms, reflection holograms, denisjuk holograms, image plane holograms, rainbow holograms, multiplex holograms, and computer generated holograms.
  • the term also includes optically variable features.
  • the security document can
  • a security thread may be a metallized strip disposed within a material of the security document, such as paper. Also, it may be partially open, i. be arranged on a surface of the security document. Furthermore, the security thread can additionally be provided with a print or with further optically detectable or non-optically detectable properties.
  • the device has at least one reference plane, wherein the reference plane is oriented parallel to a surface of the security document to be tested.
  • the device may have a receiving volume for receiving the security document to be checked, wherein the security document must be arranged for checking in the receiving volume.
  • the reference level can be a
  • the device comprises at least one image capture device
  • a camera in particular a CMOS camera or CCD camera.
  • the at least one image capture device is arranged and / or configured such that a central optical axis of the image capture device intersects the reference plane at a predetermined reference angle.
  • Image capture device may for example denote a central axis of symmetry of a detection range of the image capture device.
  • the predetermined reference angle is preferably 90 °.
  • the device comprises a first illumination device, for example a first light source, further in particular a first illumination device designed as a line light source.
  • a first illumination device for example a first light source
  • a first illumination device designed as a line light source for example a first light source
  • the line light source can in this case in particular a
  • the length may be in particular equal to or greater than a width of the security document to be tested.
  • Lighting device may in this case for illumination different illuminants include, in particular designed as an LED bulbs.
  • the first illumination device is arranged and / or configured such that a central illumination axis of the first illumination device intersects the reference plane at a first illumination angle. In other words, this means that the reference plane and thus a surface of a security document to be checked is illuminated by the first illumination device at the first illumination angle.
  • the device comprises at least one further
  • Lighting device for example, another light source.
  • the further illumination device can in particular be designed as a line light source, wherein the further line light source can have a length which is equal to or greater than the width of the security document to be tested. Also the others
  • Lighting device may include various lamps, in particular designed as an LED bulbs.
  • the further illumination device is arranged and / or formed such that a central illumination axis of the further illumination device
  • Reference plane intersects under a further illumination angle. This means in other words that the reference plane and thus also a surface of the security document to be tested is illuminated by the further illumination device at the further illumination angle.
  • an amount of an angular difference between the predetermined reference angle and the first illumination angle is larger than an amount of an angular difference between the predetermined reference angle and the further illumination angle.
  • An angle of intersection of the central optical axis and the central illumination axes with the reference plane may here denote an acute angle or right angle, which is enclosed by the respective axis with the reference plane.
  • the predetermined reference angle, the first illumination angle and the further illumination angle can each have values from 0 ° (exclusively) to 90 °
  • the predetermined reference angle may be both greater than the first
  • Illumination angle and be greater than the other illumination angle.
  • Illumination angles correspond to the difference between the reference angle and the respective illumination angle.
  • the reference plane is illuminated by the first illumination device with a flatter illumination angle than with the further illumination device, in particular if the predetermined reference angle is 90 °.
  • the angle between the optical axis of the image detection device and thus the optical detection direction and the further illumination device may be sharper than the angle between the optical detection device and the first illumination direction.
  • Security document with different illumination angles can be illuminated.
  • the illumination under the first illumination angle for example, a optical detectability of a first security element, in particular one
  • the magnitude of the angular difference between the predetermined reference angle and the first illumination angle is an angle value from a first angular interval, the first angular interval including angles of 15 ° to 50 °.
  • the reference plane can be illuminated at an angle in the range of 40 ° to 75 °.
  • This illumination advantageously makes possible a very good optical detection of a security element designed as a hologram, in particular if one
  • Angular values are avoided, in particular reflections that make it difficult to optically detect the security feature designed as a hologram.
  • the amount of the angular difference between the reference angle and the further illumination angle takes an angle value from a further angle interval, wherein the further angular interval comprises angles of 5 ° to 20 °.
  • the reference plane can be illuminated at an angle in the range of 70 ° to 85 °.
  • the amount of the angular difference between the predetermined reference angle and the first illumination angle is 30 °.
  • the amount of the angular difference between the predetermined reference angle and the further illumination angle is 15 °.
  • the predetermined reference angle is 90 °. This clearly indicates that a surface of the security document is detected vertically from above or from below. Experiments have also shown that in this case a particularly good optical detection of security elements is possible.
  • the first illumination device generates light with a first spectrum
  • the further illumination device generates light with a further spectrum
  • the first spectrum is different from the further spectrum.
  • the further spectrum comprises at least one frequency or wavelength or a frequency range or wavelength range, in particular with at least one predetermined intensity, which is not from the first
  • the first spectrum may comprise a frequency or a wavelength or a frequency range or a wavelength range, in particular with a predetermined intensity, which is not covered by the further spectrum, in particular by the predetermined intensity.
  • frequency or wavelength ranges of the two spectra overlap. This results in an advantageous manner, a further improvement of the optical detectability of various security elements.
  • the previously explained further security element for example, a security thread, under
  • the first illumination device generates light in the visible range, wherein the further illumination device generates light in the near
  • the visible region may also be referred to as the VIS region and may, for example, comprise wavelengths of 380 nm to 780 nm, in particular up to 780 nm (exclusive).
  • the near infrared range may be referred to as the VIS region and may, for example, comprise wavelengths of 380 nm to 780 nm, in particular up to 780 nm (exclusive).
  • the near infrared range may be 380 nm to 780 nm, in particular up to 780 nm (exclusive).
  • the first illumination device both light in the visible range as well as in the near infrared range or that the first
  • Lighting device produced exclusively in the visible range. Furthermore, the further illumination device can generate light exclusively in the near infrared range.
  • the device comprises at least one further image capture device, wherein the further image capture device is arranged and / or configured such that a central optical axis of the other
  • Reference plane intersects at a predetermined additional reference angle.
  • the predetermined further reference angle equal to the first predetermined
  • the first image capture device can be designed such that light can be detected by the first image capture device, in particular exclusively, with the first spectrum.
  • the further image capture device can be configured in such a way that by means of the further image capture device, in particular exclusively, light with the further spectrum can be detected.
  • the device comprises at least one
  • Evaluation device wherein by means of the evaluation image-based at least one property of the at least one imaged security element determinable and comparable with a reference property, depending on the comparison, a quality and / or authenticity of the at least one security element can be determined.
  • Image-based means that the at least one property as a function of one by means of the first and / or by means of at least one further
  • Image capture device generated image in particular based on image data, can be determined.
  • a property may be a position and / or orientation of the security element relative to a security document-fixed coordinate system.
  • a property may be a reflection property, for example, an intensity of that of
  • a property may be a presence or absence of a mapping of the security element.
  • a property may be a structural property. This means, for example, that it is determined whether an image with at least one predetermined property or a predetermined graphical element has been generated.
  • a property may be encoded by the security element information that is image-based extractable and evaluable. This information may be, for example, a document number, a Image of a person authorized to keep the security document or other information.
  • a surface of the security document is illuminated by means of a first illumination device at a first illumination angle. Furthermore, the surface of the security document is illuminated by means of a further illumination device at a further illumination angle. Furthermore, at least one image of the surface of the security document is acquired at a predetermined reference angle, wherein an amount of a
  • Angle difference between the reference angle and the first illumination angle is greater than an amount of angular difference between the reference angle and the further illumination angle. Furthermore, image-based at least one property of the at least one imaged security element is determined and with a
  • the proposed method can be carried out in particular by means of a device according to one of the previously explained embodiments.
  • the proposed device can be designed such that the proposed method can be carried out by means of the device.
  • the image can be generated at an angle of 90 ° to the previously explained reference plane and thus to the surface of the security document, wherein the surface additionally under a first illumination angle from an angular interval of 45 ° to 75 °, preferably 60 °, and under another
  • Illumination angle of 70 ° to 85 °, preferably 75 °, is illuminated.
  • the security document may comprise a hologram as the first security element and a security thread as another security element.
  • Fig. 1 is a schematic side view of a device according to the invention
  • Fig. 2 is a schematic plan view of an inventive device
  • Fig. 3 is a schematic side view of another invention
  • the device 1 shows a device 1 according to the invention for testing a security element designed as a hologram 2 and a security element 4 of a security document 4 designed as a security thread 3.
  • the device 1 has a reference plane 5, e.g. may include a support surface for the security document 4. Shown is further a receiving volume 6 of the device 1, in which the security document 4 is to be arranged for optical detection.
  • Reference plane 5 may in this case comprise a base area of the receiving volume.
  • a longitudinal direction x which is a running direction of the
  • the running direction indicates a direction in which the
  • Security document 4 for example by means of a suitable transport device, in and out of the receiving volume 6 can be transported. Also shown is a vertical direction z, which is oriented perpendicular to the reference plane 4 and thus perpendicular to a surface 7 of the security document 7 to be tested.
  • the device 1 comprises a first image capture device 8, which is designed as a VIS camera and can detect light in the visible region for image generation. Furthermore, the device 1 comprises a further image capture device 9, which is designed as an NIR camera and can detect light in the near infrared region for image generation.
  • the device comprises a first illumination device 10a and a second illumination device 10b.
  • Central illumination axes 1 1 a, 1 1 b the
  • Lighting devices 10a, 10b are shown schematically, wherein
  • Lighting directions of these lighting devices 10a, 10b are indicated by arrows.
  • the first and second illumination devices 10a, 10b emit light having wavelengths from the visible range, in particular light having wavelengths exclusively from the visible area. However, it is also possible for the first and second illumination devices 10a, 10b to emit light with wavelengths both from the visible range and from the near infrared range.
  • the device 1 comprises a third illumination device 12a and a fourth illumination device 12b, wherein also central illumination axes 13a, 13b are shown and the corresponding illumination direction is indicated by arrows.
  • the third and fourth illumination devices 12a, 12b emit light having wavelengths in the near infrared range, in particular light having wavelengths exclusively from the near infrared range.
  • a central optical axis of the image capture devices 8, 9 is in this case oriented parallel to the vertical axis z.
  • the central optical axis intersects
  • Image sensing devices 8, 9, the reference plane 5 each under a
  • FIG. 1 it is shown that an intersection of the central illumination axes 1 1 a, 1 1 b, 13a, 13b lies in the reference plane 5. However, this point of intersection can also be above or below the reference plane 5.
  • the first and the second illumination device 10a, 10b are in each case arranged and / or formed such that an amount of an angular difference (a) between the reference angle and the first illumination angle is greater than an amount of an angular difference ( ⁇ ) between the reference angle and the other illumination angle.
  • the first illumination angle can be determined as 90 ° -a or 90 ° + (-a) and the further illumination angle as 90 ° - ⁇ or 90 ° + (- ⁇ ).
  • a positive sign represents a rotation in a mathematically positive sense, ie, left-handed, about a lateral axis y, which is oriented in Fig. 1 out of the plane to a viewer (see Fig. 2).
  • the amount of the angular difference (a) between the reference angle and the first illumination angle can be 30 °, wherein the amount of the angular difference ( ⁇ ) between the reference angle and the further illumination angle can be 15 °.
  • FIG. 1 shows that the first illumination device 10a, which illuminates the reference plane 5 and thus the surface of the security document 4 at the first illumination angle, extends along the longitudinal direction x in front of it
  • FIG. 2 shows a schematic top view of the device 1 shown in FIG.
  • the first image capture device 8 and the further image capture device 9 as well as the first illumination device 10a, the second illumination device 10b, the third illumination device 12a and the fourth illumination device 12b are again shown.
  • a lateral direction y that is oriented perpendicular to the longitudinal direction x and the vertical direction z (see FIG. 1).
  • the illumination devices 10a, 10b, 12a, 12b are each formed as line light sources, wherein a length of the line light sources along the lateral direction y equal to a width of the security document 4 or the support surface measured along the lateral direction y corresponds.
  • Fig. 3 is a schematic side view of another invention
  • Device 1 shown This device is designed essentially like the device 1 shown in FIG. 1, therefore, reference is made to the corresponding explanations to FIG. 1.
  • the third illumination device 12a shown in FIG. 3 is attached to the first illumination device 10a
  • the attachment can in this case be such that the third and fourth illumination device 12a, 12b each have a desired
  • the first illumination angle can be determined as 90 ° -a or 90 ° + (- a) and the further illumination angle as 90 ° -ß or 90 ° + (- ß).
  • the arrangement and / or attachment of the illumination devices 10, 10b, 12a, 12b may be such that an amount of the angular difference (a) between the reference angle and the first illumination angle is 15 °, wherein the amount of the angular difference ( ⁇ ) between the reference angle and the further illumination angle can be 7.5 °.
  • central illumination axes 11a, 11b of the first and the second illumination devices 10a, 10b intersect at an angle of 30 °, while central illumination axes 13a, 13b of the third and the fourth illumination devices 12a, 12b extend below one another Cut angle of 15 °.
  • the third and the fourth illumination device 12a, 12b can be designed as an IR LED strip.
  • lenses 14a, 14b which are arranged for beam guidance and / or beam shaping on the first and second illumination device 10a, 10b.
  • first and second illumination devices 10a, 10b are each connected via light conduits 15a, 15b, e.g. formed as optical fiber lines 15a, 15b, are connected to a common light source 16, which thus forms part of the lighting devices 10a, 10b.
  • the lighting devices 10a, 10b do not necessarily comprise a light source 16, but can also be connected to such a light source 16.
  • the light source 16 with the lighting devices 10a, 10b via a filter element 17, in particular an IR filter element 17, are connected.
  • the light source 16 may be e.g. be a halogen lamp.
  • the device 1 comprises only a first image capture device 8, which, for example, can detect both light in the visible range and light in the near infrared range.
  • a first and second image capture device 8, 9 may be present, wherein the first image capture device 8 light in the visible range and the second image capture device 9 can detect light in the near infrared range.
  • FIG. 3 it is shown that an intersection of the central illumination axes 1 1 a, 1 1 b, 13a, 13b lies in the reference plane 5.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)

Abstract

L'invention concerne un procédé et un dispositif (1) pour contrôler au moins un élément de sécurité d'un document de sécurité (4), ledit dispositif (1) comportant au moins un plan de référence (5), ledit plan de référence (5) étant orienté parallèlement à une surface (7) du document de sécurité (4) à contrôler, le dispositif (1) comportant au moins un moyen de capture d'image (8), l'au moins un moyen de capture d'image (8) étant disposé et/ou configuré de telle sorte qu'un axe optique central du moyen de capture d'image (8) coupe le plan de référence (5) avec un angle de référence prédéterminé, le dispositif (1) comportant un premier moyen d'éclairage (10a), ledit premier moyen d'éclairage (10a) étant disposé et/ou configuré de telle sorte qu'un axe d'éclairage central (11a) du premier dispositif d'éclairage (10a) coupe le plan de référence (5) à un premier angle d'éclairage, le dispositif (1) comportant au moins un autre moyen d'éclairage (12a), l'autre moyen d'éclairage (12a) étant disposé et/ou configuré de telle sorte qu'un axe d'éclairage central (13a) de l'autre moyen d'éclairage (12a) coupe le plan de référence (5) à un autre angle d'éclairage, la valeur de la différence angulaire (α) entre l'angle de référence et le premier angle d'éclairage étant supérieure à la valeur de la différence angulaire (β) entre l'angle de référence et l'autre angle d'éclairage.
EP15709880.7A 2014-03-10 2015-03-09 Dispositif et procédé de contrôle d'au moins un élément de sécurité d'un document de sécurité Pending EP3117407A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014204302.6A DE102014204302A1 (de) 2014-03-10 2014-03-10 Vorrichtung und Verfahren zur Prüfung mindestens eines Sicherheitselements eines Sicherheitsdokuments
PCT/EP2015/054813 WO2015135871A1 (fr) 2014-03-10 2015-03-09 Dispositif et procédé de contrôle d'au moins un élément de sécurité d'un document de sécurité

Publications (1)

Publication Number Publication Date
EP3117407A1 true EP3117407A1 (fr) 2017-01-18

Family

ID=52682686

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15709880.7A Pending EP3117407A1 (fr) 2014-03-10 2015-03-09 Dispositif et procédé de contrôle d'au moins un élément de sécurité d'un document de sécurité

Country Status (3)

Country Link
EP (1) EP3117407A1 (fr)
DE (1) DE102014204302A1 (fr)
WO (1) WO2015135871A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021200598A1 (de) 2021-01-22 2022-07-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein Verfahren und Vorrichtung zum Erstellen aussagekräftiger Schnittkantenbilder

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US5856048A (en) * 1992-07-27 1999-01-05 Dai Nippon Printing Co., Ltd. Information-recorded media and methods for reading the information
DE29819954U1 (de) * 1998-11-07 1999-03-04 Basler GmbH, 22926 Ahrensburg Vorrichtung zum optischen Prüfen von Hologrammen
JP3481565B2 (ja) * 2000-07-10 2003-12-22 エヌイーシーコンピュータテクノ株式会社 運転免許証真贋チェック装置及び該装置を備えた自動現金取引機並びにプログラム記録媒体
US8433124B2 (en) * 2010-01-07 2013-04-30 De La Rue North America Inc. Systems and methods for detecting an optically variable material
FI124558B (fi) * 2011-08-03 2014-10-15 Upm Kymmene Corp Menetelmä ja järjestelmä tuotteen merkitsemiseksi
DE102012211076B4 (de) 2012-06-27 2021-01-21 Bundesdruckerei Gmbh Vorrichtung und Verfahren zur Dokumentenerfassung
DE102012219905A1 (de) 2012-10-31 2014-04-30 Bundesdruckerei Gmbh Verfahren und Vorrichtung zur Prüfung eines Sicherheitselements

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Also Published As

Publication number Publication date
WO2015135871A1 (fr) 2015-09-17
DE102014204302A1 (de) 2015-09-10

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