EP3047461B1 - Dokumentenprüfgerät - Google Patents

Dokumentenprüfgerät Download PDF

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Publication number
EP3047461B1
EP3047461B1 EP14766173.0A EP14766173A EP3047461B1 EP 3047461 B1 EP3047461 B1 EP 3047461B1 EP 14766173 A EP14766173 A EP 14766173A EP 3047461 B1 EP3047461 B1 EP 3047461B1
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EP
European Patent Office
Prior art keywords
document
translucent
bed
light
illumination
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.)
Active
Application number
EP14766173.0A
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German (de)
English (en)
French (fr)
Other versions
EP3047461A1 (de
Inventor
Horst Kessler
Andreas Wolf
Uwe Rabeler
Martin BAUMSCHEIPER
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
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Publication date
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Publication of EP3047461A1 publication Critical patent/EP3047461A1/de
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Publication of EP3047461B1 publication Critical patent/EP3047461B1/de
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    • 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
    • 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

Definitions

  • the present invention relates to the field of document authentication.
  • the disclosure document EP 1 324 283 A1 shows a document authentication device.
  • the disclosure document FR 2 859 806 A1 shows a device for checking banknotes.
  • the disclosure document DE 19 842 313 A1 shows an illumination device and a use of the illumination device in a device for digitizing semi-transparent and transparent originals.
  • the disclosure document EP 0 925 679 A1 shows a device for digitally capturing transparent document templates.
  • full-page document checking devices that are equipped with optical cameras are usually used in various applications, such as in border controls as part of first-line inspections.
  • An image camera of such a document reading device is usually accommodated in a camera room which is covered with a transparent document overlay, usually made of transparent glass.
  • the document to be captured is placed on the document support and illuminated from the camera room with light in different wavelength ranges, such as white light, UV-A or near IR.
  • the reflected light is optically captured by the image camera as a reflected light image and then evaluated.
  • the invention is based on the finding that the above object can be achieved by providing an additional lighting unit in a cover of the document bed Document checking device can be solved efficiently.
  • existing document checking devices can also be expanded to include transmitted light functionality, with which the inner structures of documents, for example watermarks or security threads, can be inspected automatically using a document reading device.
  • the additional lighting unit can also be retrofitted, so that existing document verification devices can also be cost-effectively expanded to include additional verification functionality.
  • the invention relates to a document checking device with a light-transparent document bed for receiving a document and a light-opaque cover for covering the light-transparent document bed, the light-opaque cover having an illumination device for transilluminating the document.
  • light transparency is to be understood as meaning light transparency at least in regions and/or at times.
  • the concept of light opacity is to be understood as meaning a lower level of light transparency than that of the light-transparent document support.
  • the light opaqueness of the light opaque cover can be present at least in regions and/or at times.
  • X-raying the document during the document check enables the check of internal security features of a document, for example watermarks, metallic structures such as metal threads or other embedded structures, which cannot easily be made visible using conventional image acquisition based on reflected or remitted light.
  • the light-transparent document support can be made of glass, for example.
  • the document support is arranged on the side of the document checking device document checking device.
  • the non-transparent cover is also on the side Arranged document checking device and it is intended to resiliently press the document against the document support. In this way, different thicknesses and/or sizes of documents, for example ID-1, ID-2 or passports with different numbers of visa pages, can be compensated.
  • a rear side of the document faces away from the light-transparent document support and faces the light-intransparent cover.
  • the back of the document is illuminated by the lighting device, as a result of which the document is transilluminated in the direction of the light-transparent document bed.
  • the resulting X-ray image can be optically recorded, for example, by an image camera, which can be arranged in a camera room behind the light-transparent document bed, and evaluated by a processor.
  • the document can be one of the following documents: document of value, in particular a bank note, identity document such as an identity card, passport, access control card, authorization card, company ID card, tax stamp or ticket, birth certificate, driver’s license or vehicle registration card, means of payment, for example a bank card or credit card.
  • document of value in particular a bank note
  • identity document such as an identity card, passport, access control card, authorization card, company ID card, tax stamp or ticket, birth certificate, driver’s license or vehicle registration card
  • means of payment for example a bank card or credit card.
  • the document can have one or more layers or be based on paper and/or plastic.
  • the document can be made up of plastic-based foils, which are joined together to form a body by means of gluing and/or laminating, with the foils preferably having similar material properties.
  • the lighting device is designed to emit white light, ultraviolet light and/or infrared light.
  • the lighting device is arranged on or in a cover side of the light-intransparent cover that can be turned toward the light-transparent document bed. This ensures that the light is emitted in the direction of the light-transparent document support. At the same time, the opaque cover prevents stray light from falling on the translucent document support.
  • the illumination device is designed to generate illumination areas of different sizes in order to x-ray documents of different sizes.
  • the lighting device can have a plurality of light elements, for example LEDs, which are arranged over a large area and form light areas that can be controlled or switched on individually.
  • the illumination device has a plurality of switchable light elements, in particular light-emitting diodes, in order to generate illumination areas of different sizes for x-raying documents of different sizes.
  • the illumination areas are defined by a size of a luminous area of the illumination device.
  • the size of a luminous area can be determined, for example, by a number of activated, i.e. switched on and arranged over a large area light elements.
  • the lighting device has first light elements, which define a first lighting area, and second light elements, which define a second lighting area, wherein the first light elements can be activated for the X-raying of a document with a first size and wherein the first light elements and the second Light elements can be activated for x-raying a document of a second size, or the second light elements can be deactivated for x-raying a document of the first size.
  • the second light elements can be switched on in addition to the first light elements.
  • the size of the document can be selectable, for example, by means of a user interface, for example a graphical user interface or a switch.
  • the size of the document can be detected automatically.
  • a calibration recording of the document can be generated using an image camera of the document checking device.
  • a contour and thus a size of the identification element can be determined, for example by means of edge detection.
  • the second illumination area at least partially surrounds the first illumination area or the second illumination area borders on the first illumination area. In this way, illumination areas of different sizes can be generated for the x-raying of documents of different sizes.
  • the lighting comprises a plurality of light elements which are switched, for example switched on or off, depending on the size and/or position of the document placed.
  • a reflected light image is first recorded, by means of which the size and position of the document are determined.
  • the corresponding light elements for transmitted light which are located behind the document, can be activated. In this way, the illumination area for x-raying documents of different sizes can be generated in different support positions.
  • the light-transparent document support has a light transparency that can be changed in certain areas.
  • the document bed can be darkened in certain areas in order to prevent extraneous light falling on the document bed from being able to get into a camera room with an image camera that may be located below or behind the document bed.
  • that document support area which can be covered by the document is not darkened or is switched to light-transparent in order to enable an optical recording of the document by means of the video camera.
  • a first document support area of the light-transparent document support area can be covered by the document, with a second document support area of the light-transparent document support area being arranged outside of the first document support area, and wherein a light transparency of the first document support area can be set or selected to be higher than a light transparency of the second document support area.
  • the light transparency can be adjusted by a processor, for example the processor described here. By reducing the light transparency of the second document support area, it is darkened. On the other hand, he will first, transparent document overlay area covered by the document. Thus, no extraneous light can penetrate through the document support into a camera space located below or behind it or covered by the document support.
  • the light-transparent document overlay has liquid crystal cells which can be controlled in areas for changing the light transparency of the light-transparent document overlay in areas, or the light-transparent document overlay comprises a liquid crystal layer, in particular a film, the liquid crystal layer having liquid crystal cells which can be activated in areas for changing the light transparency of the light-transparent document overlay in areas ,
  • the control can take place by means of a processor, for example by means of the processor described here.
  • the liquid crystal cells can be arranged in a matrix and assigned in certain areas to the first document support area or to the second document support area, for example by addressing.
  • the entire document overlay is light-transparent, for example. This enables the optical detection of the first document support area. This can be carried out, for example, by means of a detection, for example by means of the processor described here, of a contour of the document on the document support.
  • the second document support area not covered by the document is then switched to be non-transparent or darkened, for example by means of the processor described here. After it has been darkened, the document can be captured optically, for example by means of an optical camera arranged below the document bed.
  • the processor is designed to determine the first document support area based on an optical detection of the document. In this way, the geometric extent or position of the first document support area can be determined as a function of a size and/or a support location of the document that can be placed on the document support.
  • the optical detection of the document can be generated, for example, starting from an initially transparent document overlay by means of an optical camera of the document reading device, which is evaluated by the processor in order to detect the document or its position on the document overlay. This detection can be carried out using edge detection or pattern detection. After the detection, the processor can darken or switch the document bed to non-transparent outside of the first document bed area.
  • the first document support area can, for example, be switched to be light-transparent or remain light-transparent, while the second document support area, which at least partially surrounds the first document support area and is not covered by the document, can be darkened or switched to non-transparent. This efficiently counteracts the incidence of scattered light.
  • the first document support area can be specified as a function of the size of the document, in particular can be selected or entered using a graphical user interface.
  • different sizes of documents can be selected or entered in order to determine the size of the first, light-transparent document support area.
  • the second document bed area which at least partially surrounds the first document bed area or is outside the first document bed area, is, for example, the remaining area of the document bed and can be darkened or switched to opaque for the optical recording of the document.
  • the document checking device has a camera space, which is covered by the light-transparent document overlay, and an image camera arranged in the camera space for recording a transmitted image of the document.
  • a further lighting device can be arranged in the camera space in order to illuminate the document on the light-transparent support.
  • the camera can optically record the reflected light image of the document for a further document check.
  • the additional lighting device can be designed to generate white light, infrared light or ultraviolet light.
  • the document checking device has a housing, with the light-opaque cover being pivotably arranged on the housing.
  • the cover which is opaque to light, can be formed, for example, as a pivotable spring flap.
  • the opaque cover has a first opaque cover element and a second opaque cover element, the first opaque cover element being pivotably attached to the housing and the second opaque cover element being resiliently attached to the first opaque cover element.
  • the non-transparent cover is thus divided into two.
  • a constant contact pressure can be generated on the document by the second opaque cover element.
  • the document can also be held against the force of gravity on a laterally lying document support whose surface normal is, for example, within a tolerance range perpendicular to a gravity vector.
  • the pressing effect is also achieved in that unwanted scattered light from the outside is suppressed, as a result of which a defined backlighting can be implemented.
  • the document checking device has a processor for controlling the lighting device or for controlling a light transparency of the light-transparent document overlay.
  • the processor may be the processor described above or below.
  • the document can be X-rayed in order to obtain a X-ray image
  • the processor is designed to process the X-ray image in order to obtain a X-ray image area which is a size of the document is equivalent to.
  • the X-ray image can be captured by the image camera.
  • the processing can include, for example, software-implemented cropping, so-called clipping, of the X-ray image.
  • the document can be X-rayed in order to obtain a X-ray image
  • the processor is designed to compare the X-ray image with a reference image in order to examine the document.
  • the X-ray image can be captured by the image camera, for example.
  • the document is one of the following documents: an identification document, a passport, a means of payment, a bank card, a credit card, a driver's license, a company ID card, a bill of lading or an authorization card.
  • the document can also be any other document whose identity and authenticity is to be confirmed.
  • the document may contain an integrated circuit.
  • the invention also relates to a method for checking a document, comprising: illuminating a back side of a document lying on a light-transparent document support of a document checking device with a front side in order to x-ray the document; and capturing a candling image of the document.
  • the document can be checked on the basis of the X-ray image, for example by comparing the X-ray image with a reference image.
  • the document checking device can include a database with reference images.
  • the document checking device comprises a communication interface for communication with an external data server, which provides reference images, via a communication network.
  • the method is carried out with the document checking device according to the invention
  • a computer program with a program code for executing the method according to the invention when the program code is executed on a computer is also disclosed by way of example.
  • Figure 1A shows a top view of a document checking device 100 with a light-transparent document support 101 for receiving an in 1 document, not shown, and with a light-opaque cover 103 for covering the light-transparent document overlay 101, the light-opaque cover 103 having an illumination device 105 for transilluminating the document.
  • the lighting device 105 includes a plurality of light elements 107 that can be switched on in certain areas, for example.
  • the first light elements 109 can be activated or switched on for x-raying a document of a first size
  • the first light elements 109 and the second light elements 113 can be activated or switched on together for x-raying a larger document of a second size.
  • the second light elements 113 can be deactivated for the X-raying of a document with the first size.
  • the document checking device 100 also has a housing 116 with a camera chamber 117 which is covered by the light-transparent document support 101 . Further the housing 116 includes an image camera 119 arranged in the camera space 117 for recording a X-ray image of the document.
  • the opaque cover 103 is pivotally mounted on the housing 116, for example by means of one or more hinges 131.
  • the opaque cover 103 comprises a first opaque cover element 121 and a second opaque cover element 123.
  • the first opaque cover element 121 is attached to the housing 116 in a pivotable manner.
  • the second opaque cover element 123 is resiliently fastened to the first opaque cover element 121 .
  • the second opaque cover element 123 can be designed as a spring-loaded pressure clip. In this way, the document can be resiliently pressed against the light-transparent document bed 101 .
  • the light-transparent document support 101 is arranged laterally on the housing 116 on a housing side 125 .
  • the housing also includes a housing upper shell 127.
  • the opaque cover 103 which also forms a movable table, is arranged lowered in relation to the upper housing shell 127. This makes it possible, for example, to insert document pages of a passport with the book covers folded down or to place them on the document support 101 .
  • the document checking device 100 also includes a processor 129, which is arranged, for example, in the housing 116 or in the light-opaque cover 103.
  • the processor 129 is provided to control the lighting device 105 in order to switch the light elements 107 on or off in certain areas.
  • the processor can be designed to switch on the light elements 109 of the first illumination area 111 when the document has a first size, in order to transilluminate the document.
  • the second light elements 113 of the second lighting area 115 remain switched off in order to avoid interfering extraneous light outside of the Document covered area of the document pad 101 to avoid. If, on the other hand, a larger document is to be X-rayed, the second light elements 113 of the second illumination area 115 are switched on in order to generate a larger illumination area.
  • the processor 129 is connected to the lighting device 105 by means of a cable, for example.
  • the lighting device 105 can be designed as a component that can be retrofitted.
  • the size of the document can, for example, be selected or automatically detected.
  • the contour of the document can be detected by means of a calibration recording and the size of the document can be recorded on this basis.
  • the processor 129 can also be provided to trigger the imaging camera 119 for recording the X-ray image.
  • FIG. 117 In the camera room 117, another, in Figure 1A lighting device, not shown, may be provided in order to illuminate the document through the light-transparent document support 101.
  • the light emitted by the document in the direction of the image camera 119 in response to this illumination can be recorded by the image camera 119 and used for further document inspection.
  • the lighting device 105 is designed to emit white light and/or infrared light and/or ultraviolet light.
  • the light elements 107 can be designed to generate white light and/or infrared light and/or ultraviolet light.
  • the light elements 107 include infrared light elements and/or white light elements and/or ultraviolet light elements, which can be arranged in the illumination areas 111 and 115, for example distributed uniformly.
  • the lighting unit 105 is designed in such a way that the lighting is provided by brief flashes or by flash pulses.
  • the processor 129 is designed to switch on or activate or switch off or deactivate the infrared light elements and/or the white light elements and/or the ultraviolet light elements simultaneously or one after the other, in particular separately, for recordings in different spectral ranges.
  • the light elements 107 can only be infrared light elements.
  • the processor 129 can be designed to use the unused color channels for, for example, metameric red.
  • document carriers can be used for different document sizes, for example for documents of sizes ID-1 and/or ID-2.
  • Figure 1B shows a side view of the in Figure 1A illustrated document reader 100.
  • the cover 103 is pivotally mounted on the housing 116 by laterally arranged hinges 131, in particular by means of the first cover element 121.
  • the light-transparent document support has a light transparency that can be changed in certain areas.
  • the document bed 101 shows the document bed 101 with a light transparency that can be changed in certain areas.
  • the document bed 101 comprises a first document bed area 203 and a second document bed area 205, which is arranged outside of the first document bed area 203, with a light transparency of the first document bed area 203 being higher than a light transparency of the second document bed area 205.
  • the document support 101 in 2 liquid crystal cells (LCD, Liquid Crystal Display), not shown, which are used to change the area by area Light transparency of the light-transparent document support 101 can be controlled in certain areas.
  • LCD Liquid Crystal Display
  • the liquid crystal cells are arranged in a liquid crystal layer, which can be a film, for example, which can cover a support glass of the document support that is transparent per se.
  • the document bed is formed by a liquid crystal panel in which liquid crystal cells are embedded. The following description relates to the two aforementioned cases.
  • the liquid crystal cells are arranged, for example, in the form of a matrix and can be controlled, for example, individually or in regions by the processor 129 .
  • the processor 129 can, for example, apply electrical voltage to an area with liquid crystal cells in order to align the liquid crystal cells and, for example, to switch the first document support area 203 transparent or to increase the light transparency of the first document support area 203.
  • the remaining, second document support area 205 of the document support 101 is switched to non-transparent in that the liquid crystal cells assigned to the second document support area 205 are not subjected to a voltage or are subjected to a further voltage.
  • the liquid crystal cells can be controlled by means of the processor 129 .
  • processor 129 is configured, for example, to control different document bed areas of document bed 101 differently, for example depending on the size of a document that can be placed on the document bed, in order to darken or switch non-transparent those document bed areas that are not covered by a document.
  • the processor 129 is configured, for example, to switch a first document support area 103, which is covered by a document, to transparent or to leave it transparent, and to switch a second document support area 103, which is arranged outside of the first document support area 103, non-transparent or to be left non-transparent in order to prevent extraneous light from penetrating through the document support 101.
  • the processor 129 can also control the image camera 119 in order, for example, to generate a calibration recording of a document starting from an initially transparent document overlay 101 .
  • the processor 129 can be designed to determine a position and a size of the document based on the calibration recording in order to determine the first document support area 203 .
  • the control device can, for example, carry out edge recognition or pattern recognition.
  • the optical detection of the first document overlay area 203 covered by the document can be dispensed with if the size of the document can be selected, for example, by means of user guidance or a graphical user interface and/or if the document overlay is provided with overlay markings for different documents.
  • the second document support area 205 lying outside of the first document support area 203 can be darkened or switched to non-transparent in order to prevent extraneous light from penetrating into the camera space 117 .
  • the actual optical detection of the document which covers the first document support area 203 and thus also protects it from extraneous light, can then be carried out using the image camera 119 .
  • the optical detection can also be triggered by the processor 129 .
  • the processor 129 forms a controller of the document reading device and takes over all control tasks.
  • FIG. 3 shows a flow chart of a method for the optical detection of a document with: illuminating 301 a rear side of a document lying on a translucent document support of a document checking device with a front side in order to x-ray the document, and recording 303 a x-ray image of the document.
  • the method is carried out using the document checking device 100 .

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Image Input (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Credit Cards Or The Like (AREA)
  • Liquid Crystal (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Studio Devices (AREA)
EP14766173.0A 2013-09-16 2014-09-16 Dokumentenprüfgerät Active EP3047461B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201310110165 DE102013110165A1 (de) 2013-09-16 2013-09-16 Dokumentenprüfgerät
PCT/EP2014/069652 WO2015036602A1 (de) 2013-09-16 2014-09-16 Dokumentenprüfgerät

Publications (2)

Publication Number Publication Date
EP3047461A1 EP3047461A1 (de) 2016-07-27
EP3047461B1 true EP3047461B1 (de) 2022-04-27

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EP14766173.0A Active EP3047461B1 (de) 2013-09-16 2014-09-16 Dokumentenprüfgerät

Country Status (6)

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US (1) US9846983B2 (ja)
EP (1) EP3047461B1 (ja)
JP (1) JP6486371B2 (ja)
CN (1) CN105556577A (ja)
DE (1) DE102013110165A1 (ja)
WO (1) WO2015036602A1 (ja)

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CN107617574B (zh) * 2017-09-15 2019-11-12 刘红利 一种票据识别分拣装置
DE102018132045A1 (de) * 2018-12-13 2020-06-18 Bundesdruckerei Gmbh Vorrichtung zum automatischen Prüfen eines Sicherheitsdokuments und Verfahren zum maschinellen Auslesen eines Sicherheitsdokuments für eine automatische Dokumentenprüfung
CN111389759B (zh) * 2020-04-13 2021-11-02 国网河北省电力有限公司物资分公司 一种票据文档的智能分拣存储装置

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EP0925679B1 (de) * 1997-07-08 2001-08-29 DRS Digitale Repro-Systeme GmbH Verfahren und vorrichtung zur digitalen erfassung von sowohl transparenten als auch lichtundurchlässigen dokumentenvorlagen
JP2001147498A (ja) * 1999-11-18 2001-05-29 Ricoh Co Ltd 画像読取装置

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WO2015036602A1 (de) 2015-03-19
EP3047461A1 (de) 2016-07-27
DE102013110165A1 (de) 2015-03-19
US9846983B2 (en) 2017-12-19

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