WO1997015904A1 - Process for detecting and checking the genuineness of bank notes and device for implementing it - Google Patents

Process for detecting and checking the genuineness of bank notes and device for implementing it Download PDF

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Publication number
WO1997015904A1
WO1997015904A1 PCT/AT1996/000205 AT9600205W WO9715904A1 WO 1997015904 A1 WO1997015904 A1 WO 1997015904A1 AT 9600205 W AT9600205 W AT 9600205W WO 9715904 A1 WO9715904 A1 WO 9715904A1
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WO
WIPO (PCT)
Prior art keywords
evaluation
banknote
image
signal
authenticity
Prior art date
Application number
PCT/AT1996/000205
Other languages
German (de)
French (fr)
Inventor
Manfred Schulze
Original Assignee
As Beteiligungs Gesellschaft Mbh
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Publication date
Family has litigation
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Application filed by As Beteiligungs Gesellschaft Mbh filed Critical As Beteiligungs Gesellschaft Mbh
Priority to DK96934173T priority Critical patent/DK0799460T3/en
Priority to EP96934173A priority patent/EP0799460B1/en
Priority to AT96934173T priority patent/ATE206545T1/en
Priority to DE59607830T priority patent/DE59607830D1/en
Priority to CZ19971916A priority patent/CZ290214B6/en
Priority to AU72651/96A priority patent/AU709677B2/en
Publication of WO1997015904A1 publication Critical patent/WO1997015904A1/en
Priority to MXPA/A/1997/004692A priority patent/MXPA97004692A/en

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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

Definitions

  • the invention relates to a method for detecting and checking the authenticity of banknotes with an electromagnetic radiation source, and a device for detecting and checking the authenticity of banknotes, in which the banknote is emitted into an electromagnetic radiation source, e.g. Light source is inserted.
  • an electromagnetic radiation source e.g. Light source
  • banknotes are illuminated in incident light, for example with an ultraviolet light source, in order to enable visual control in this way are known.
  • the evaluation is based on the experience of the viewer, depending on the banknote, the focus being on specific, characteristic positions of the banknote suitable for the evaluation.
  • a number of devices are known for the automatic evaluation of banknotes, in which the banknotes are passed under a scanner.
  • the special evaluation detects a number of criteria oriented towards a specific bank note and is carried out according to a predetermined scheme, so that a separate presetting is required for each bank note.
  • Such devices can generally only be used for a small number of different banknotes if the effort for the evaluation should not be too high.
  • the invention now aims to provide a method and a device of the type mentioned at the beginning with which a simple adaptation of the recognition to different banknotes is facilitated.
  • the invention aims to minimize the detection effort via simple procedures that can be carried out without complex computers so that a rapid and reliable evaluation of a large number of each other is possible different banknotes is possible.
  • the method according to the invention is used to achieve this object. Ren for recognizing and checking the authenticity of banknotes essentially characterized in that a black and white image of the irradiated banknote is recorded and that the image is an evaluation of the number, frequency and / or area distribution of at least 32 detected gray levels will throw.
  • the device according to the invention for recognizing and checking the authenticity of banknotes in which the banknote is inserted into an electromagnetic radiation source such as a light source, is essentially characterized in that the banknote is guided between a digital camera and a light source and it is detected that the video signal of the image camera is fed to a computer, that at least 32 gray levels in their relative arrangement, frequency and / or area share in the image are subjected to an evaluation and that an evaluation signal for the authenticity of a display and / or Control for the forwarding of the banknote is fed.
  • a still image By capturing a banknote carried between a digital camera and a light source, a still image can be are taken, the video signal of the image camera possibly being subjected to a conventional data compression, in particular an image data compression, before further processing.
  • the signals to be evaluated in the sequence should contain at least 32 gray levels on the recording side, the video signal being able to be subjected to a corresponding computing operation which can increase the significance of the subsequent evaluation with a correspondingly reduced computing effort.
  • the evaluation of the number of gray levels can also take place on the basis of compressed signals, it also being possible to subsequently further evaluate correspondingly coded signals, such as sum signals of the individual pixel information.
  • an evaluation signal for the authenticity of a display can be obtained in a very short time and / or a controller for forwarding the banknote.
  • the design is advantageously made such that the banknote is kept at a standstill on an illuminated plate during the recording.
  • Such a still picture allows any compression and coding before further processing, the reproducibility being independent of the transport speed of the feed or other mechanical parameters in any case.
  • the evaluation comprising at least 64, preferably 128 gray levels, the gray level signal advantageously being compared with reference signals in order to quickly follow appropriate results.
  • the reference signals can either be supplied externally to the respective computer in the form of data.
  • the design can advantageously be made such that the computer has an adaptive learning circuit, in particular an iteration circuit for calibration to a specific bank note, which enables reference signals to be formed by iteration.
  • the design can advantageously be such that a difference signal between the image signal and the reference signal is fed to the evaluation circuit.
  • the design is such that the electromagnetic steel source is designed as a steel source with short-wave light, UV or X-ray source, which ensures that even with relatively densely printed banknotes there is a maximum of evaluable signals.
  • the design preferably being such that the black and white image of the banknote is used for a picture element evaluation e.g. is subject to a "pattern recognition".
  • image evaluation programs are used, for example, in connection with the evaluation of satellite images, in which case a high degree of error tolerance is also achieved, since incorrectly read data or disturbances in the image can possibly be compensated for.
  • a banknote 1 can be seen on a transparent support 2, the banknote being held at a standstill by a digital camera 3 during the photographic recording.
  • the banknote 1 is emitted via a radiation source 4 designed as a light source shines through.
  • the signal from the digital camera passes via data lines 5 and a data compressor or data concentrator 6 to a computer 7, in which the corresponding evaluation takes place.
  • the digital camera 3 is to record at least 32 gray levels, and when the evaluation confirms the authenticity, a corresponding signal 8 can be actuated to display the authenticity.
  • a corresponding lock or a further transport mechanism can also be actuated in order to enable the banknote recognized as genuine to be stored in a corresponding slot for receiving this banknote.
  • the light source can be adapted to the particular type of bank notes 1 to be examined. In principle, high-energy, electromagnetic radiation sources are particularly advantageous for densely printed banknotes.
  • the digital camera 3 is intended to enable at least 5 band images per second with the desired resolution for rapid and reliable detection.
  • the transparent plate 2 can also be replaced by a perforated plate, and can in particular ensure the secure standstill position for fixing the banknotes during the recording by sucking in air through corresponding holes in the plate.

Abstract

In order to check and detect the genuineness of bank notes (1), light from a radiation source (4) is passed through them and a monochrome image with at least 32 grey gradations is made by means of a digital camera (3). The signal from said digital camera (3) is taken to a computer (7) for the evaluation of the number, frequency and/or surface distribution of the grey gradations detected.

Description

Verfahren zur Erkennung und zum Überprüfen der Echtheit von Banknoten sowie Einrichtung zur Durchführung dieses VerfahrensMethod for recognizing and checking the authenticity of banknotes and device for carrying out this method
Die Erfindung bezieht sich auf ein Verfahren zur Erkennung und zum Überprüfen der Echtheit von Banknoten mit einer elektromag¬ netischen Strahlenquelle sowie eine Einrichtung zur Erkennung und zum Überprüfen der Echtheit von Banknoten, bei welcher die Banknote in eine elektromagnetische Strahlenquelle wie z.B. Lichtquelle eingeschoben wird.The invention relates to a method for detecting and checking the authenticity of banknotes with an electromagnetic radiation source, and a device for detecting and checking the authenticity of banknotes, in which the banknote is emitted into an electromagnetic radiation source, e.g. Light source is inserted.
Einrichtungen, bei welchen Banknoten beispielsweise mit einer Ultraviolettlichtquelle im Auflicht angestrahlt werden, um auf diese Weise eine visuelle Kontrolle zu ermöglichen, sind be¬ kannt. Die Auswertung erfolgt in diesen Fällen durch die Erfah- rung des Betrachters, wobei je nach Banknote das Augenmerk auf bestimmte, charakteristische, für die Auswertung geeignete Posi¬ tionen der Banknote gerichtet wird. Für eine automatische Aus¬ wertung von Banknoten sind eine Reihe von Einrichtungen bekannt geworden, bei welchen die Banknote unter einem Scanner hindurch- geführt sind. Die spezielle Auswertung erfaßt hierbei in aller Regel eine Anzahl von auf eine bestimmte Banknote hin ausgerich¬ tete Kriterien und erfolgt nach einem vorbestimmten Schema, sodaß für jede Banknote eine gesonderte Voreinstellung erforder¬ lich ist. Derartige Einrichtungen sind in der Regel nur für eine geringe Anzahl verschiedener Banknoten verwendbar, wenn der Auf¬ wand für die Auswertung nicht zu hoch werden soll.Devices in which banknotes are illuminated in incident light, for example with an ultraviolet light source, in order to enable visual control in this way are known. In these cases, the evaluation is based on the experience of the viewer, depending on the banknote, the focus being on specific, characteristic positions of the banknote suitable for the evaluation. A number of devices are known for the automatic evaluation of banknotes, in which the banknotes are passed under a scanner. As a rule, the special evaluation detects a number of criteria oriented towards a specific bank note and is carried out according to a predetermined scheme, so that a separate presetting is required for each bank note. Such devices can generally only be used for a small number of different banknotes if the effort for the evaluation should not be too high.
Die Erfindung zielt nun darauf ab, ein Verfahren und eine Ein¬ richtung der eingangs genannten Art zu schaffen, mit welcher ei- ne einfache Anpassung der Erkennung an unterschiedliche Bankno¬ ten erleichtert wird. Mit Rücksicht auf den immer kürzer werden¬ den Abstand der Neueinführung von Banknoten aus Sicherheitsgrün¬ den zielt die Erfindung darauf ab, den Erkennungsaufwand über einfache und ohne aufwendige Rechner durchführbare Prozeduren so weit zu minimieren, daß eine rasche und sichere Auswertung einer großen Anzahl von voneinander verschiedenen Banknoten möglich ist. Zur Lösung dieser Aufgabe ist das erfindungsgemäße Verfah- ren zur Erkennung und zur Überprüfung der Echtheit von Banknoten im wesentlichen dadurch gekennzeichnet, daß ein Schwarz-Weiß Bild der durchstrahlten Banknote aufgenommen wird und daß das Bild einer Auswertung der Anzahl, Häufigkeit und/oder flächen- mäßigen Verteilung von wenigstens 32 erfaßten Graustufen unter¬ worfen wird. Dadurch, daß ein Schwarz-Weiß Bild der durchstrahl¬ ten Banknote aufgenommen wird, werden gleichzeitig Informationen von der Vorderseite und der Rückseite einer Banknote in der Form eines akkumulierten Summensignals ausgewertet, wobei dadurch, daß die Beschränkung auf ein Schwarz-Weiß Bild mit einer vorbe¬ stimmten Anzahl von wenigstens 32 erfaßten Graustufen erfolgt, der rechnerische Aufwand minimiert werden kann. Gleichzeitig läßt sich aber mit der Erfassung von 32 voneinander verschiede¬ nen Graustufen ohne weiteres die Genauigkeit der Auswertung so weit steigern, daß nahezu alle Banknoten sicher voneinander unterschieden werden können, und für jede Banknote die erforder¬ lichen Sicherheitskriterien für die Entscheidung der Echtheit sicher erfüllt werden können. Die Bildauswertung eines Schwarz- Weiß Bildes erfordert hierbei zwar einen hohen Rechenaufwand, welcher jedoch von heutigen Rechnern bei einem günstigen Preis- Leistungs-Verhältnis bereits erfüllt werden kann, sodaß die er¬ findungsgemäße Verfahrensweise auch auf nicht hochspezialisier¬ ten Rechenanlagen sicher erfolgen kann.The invention now aims to provide a method and a device of the type mentioned at the beginning with which a simple adaptation of the recognition to different banknotes is facilitated. In view of the ever shorter interval between the introduction of new banknotes for security reasons, the invention aims to minimize the detection effort via simple procedures that can be carried out without complex computers so that a rapid and reliable evaluation of a large number of each other is possible different banknotes is possible. The method according to the invention is used to achieve this object. Ren for recognizing and checking the authenticity of banknotes essentially characterized in that a black and white image of the irradiated banknote is recorded and that the image is an evaluation of the number, frequency and / or area distribution of at least 32 detected gray levels will throw. Because a black-and-white image of the irradiated banknote is recorded, information from the front and the back of a banknote is simultaneously evaluated in the form of an accumulated sum signal, with the fact that the restriction to a black-and-white image with a ¬ certain number of at least 32 grayscale recorded, the computational effort can be minimized. At the same time, however, with the detection of 32 different gray levels, the accuracy of the evaluation can easily be increased to such an extent that almost all banknotes can be reliably distinguished from one another, and the required security criteria for the decision of authenticity can be reliably met for each banknote can be. The image evaluation of a black-and-white image requires a great deal of computation effort, but this can already be achieved by today's computers at a favorable price-performance ratio, so that the procedure according to the invention can also be carried out reliably on non-highly specialized computing systems.
Die erfindungsgemäße Einrichtung zur Erkennung und zum Überprü¬ fen der Echtheit von Banknoten, bei welcher die Banknote in eine elektromagnetische Strahlenquelle wie z.B. Lichtquelle einge¬ schoben wird, ist im wesentlichen dadurch gekennzeichnet, daß die Banknote zwischen einer digitalen Kamera und einer Licht- quelle geführt und erfaßt wird, daß das Videosignal der Bild¬ kamera einem Rechner zugeführt ist, daß wenigstens 32 Graustufen in ihrer relativen Anordnung, Häufigkeit und/oder flächenmäßigem Anteil im Bild einer Auswertung unterworfen werden und daß ein Auswertesignal für die Echtheit einer Anzeige und/oder einer Steuerung für die Weiterleitung der Banknote zugeführt ist. Durch die Erfassung einer zwischen einer digitalen Kamera und einer Lichtquelle geführten Banknote kann ein Standbild aufge- nommen werden, wobei das Videosignal der Bildkamera ggf. vor der weiteren Verarbeitung einer üblichen Datenkompression, insbeson¬ dere einer Bilddatenkompression, unterzogen werden kann. Die in der Folge zu verwertenden Signale sollen zumindest 32 Graustufen aufnahmeseitig enthalten, wobei das Videosignal einer entspre¬ chenden Rechenoperation unterworfen werden kann, welche die Signifikanz der nachfolgenden Auswertung bei entsprechend ver¬ ringertem Rechenaufwand vergrößern kann. Die Auswertung der An¬ zahl der Graustufen kann hierbei auch ausgehend von komprimier- ten Signalen erfolgen, wobei darüber hinaus die Möglichkeit besteht, auch entsprechend kodierte Signale, wie beispielsweise Summensignale der einzelnen Bildpunktinformationen, in der Folge weiter auszuwerten. Dadurch, daß entweder die relative Anordnung oder die Häufigkeit oder der flächenmäßige Anteil der Graustufen im Bild in der ursprünglichen Form des Bildsignales oder einer entsprechend modifizierten, komprimierten oder kodierten Form einer Auswertung unterworfen wird, kann in überaus kurzer Zeit ein Auswertesignal für die Echtheit einer Anzeige und/oder einer Steuerung für die Weiterleitung der Banknote zugeführt werden.The device according to the invention for recognizing and checking the authenticity of banknotes, in which the banknote is inserted into an electromagnetic radiation source such as a light source, is essentially characterized in that the banknote is guided between a digital camera and a light source and it is detected that the video signal of the image camera is fed to a computer, that at least 32 gray levels in their relative arrangement, frequency and / or area share in the image are subjected to an evaluation and that an evaluation signal for the authenticity of a display and / or Control for the forwarding of the banknote is fed. By capturing a banknote carried between a digital camera and a light source, a still image can be are taken, the video signal of the image camera possibly being subjected to a conventional data compression, in particular an image data compression, before further processing. The signals to be evaluated in the sequence should contain at least 32 gray levels on the recording side, the video signal being able to be subjected to a corresponding computing operation which can increase the significance of the subsequent evaluation with a correspondingly reduced computing effort. The evaluation of the number of gray levels can also take place on the basis of compressed signals, it also being possible to subsequently further evaluate correspondingly coded signals, such as sum signals of the individual pixel information. Because either the relative arrangement or the frequency or the areal portion of the gray levels in the image in the original form of the image signal or a correspondingly modified, compressed or coded form is subjected to an evaluation, an evaluation signal for the authenticity of a display can be obtained in a very short time and / or a controller for forwarding the banknote.
Um ein Höchstmaß an Reproduzierbarkeit der erfaßten Daten zu gewährleisten, ist mit Vorteil die Ausbildung so getroffen, daß die Banknote auf einer durchleuchteten Platte während der Auf¬ nahme im Stillstand gehalten ist. Ein derartiges Standbild läßt beliebige Kompressionen und Kodierungen vor der Weiterverarbei¬ tung zu, wobei in jedem Fall die Reproduzierbarkeit von der Transportgeschwindigkeit des Einzuges oder anderen mechanischen Parametern unabhängig wird.In order to ensure maximum reproducibility of the recorded data, the design is advantageously made such that the banknote is kept at a standstill on an illuminated plate during the recording. Such a still picture allows any compression and coding before further processing, the reproducibility being independent of the transport speed of the feed or other mechanical parameters in any case.
Eine weitere Erhöhung der Präzision der Auswertung und eine si¬ chere Unterscheidung einer noch größeren Anzahl verschiedener Banknoten läßt sich dadurch gewährleisten, daß die Auswertung wenigstens 64, vorzugsweise 128 Graustufen umfaßt, wobei mit Vorteil das Graustufensignal mit Referenzsignalen verglichen wird, um in rascher Folge zu geeigneten Ergebnissen zu gelangen. Die Referenzsignale können bei einer derartigen Anordnung ent¬ weder dem jeweiligen Rechner in Form von Daten extern zugeführt werden. Alternativ kann aber mit Vorteil die Ausbildung so ge¬ troffen sein, daß der Rechner über eine adaptive Lernschaltung, insbesondere eine Iterationschaltung zur Kalibrierung auf eine bestimmte Banknote verfügt, wodurch eine Bildung von Referenz¬ signalen durch Iteration ermöglicht wird. Um die Auswertezeit und die zu verarbeitende Datenmenge zu reduzieren, kann hierbei mit Vorteil die Ausbildung so getroffen sein, daß ein Differenz- signal von Bildsignal und Referenzsignal der Auswerteschaltung zugeführt ist.A further increase in the precision of the evaluation and a reliable differentiation of an even larger number of different banknotes can be ensured by the evaluation comprising at least 64, preferably 128 gray levels, the gray level signal advantageously being compared with reference signals in order to quickly follow appropriate results. With such an arrangement, the reference signals can either be supplied externally to the respective computer in the form of data. Alternatively, however, the design can advantageously be made such that the computer has an adaptive learning circuit, in particular an iteration circuit for calibration to a specific bank note, which enables reference signals to be formed by iteration. In order to reduce the evaluation time and the amount of data to be processed, the design can advantageously be such that a difference signal between the image signal and the reference signal is fed to the evaluation circuit.
In besonders vorteilhafter Weise ist die Ausbildung so getrof¬ fen, daß die elektromagnetische Stahlenquelle als Stahlenquelle mit kurzwelligem Licht, UV-, - oder Röntgenstrahlenquelle aus¬ gebildet ist, wobei auf diese Weise sichergestellt wird, daß sich auch bei relativ dicht bedruckte Banknoten ein Höchstmaß an auswertbaren Signalen ergibt. Neben der Möglichkeit der ein¬ fachen Auswertung von statistischen Daten, die jeweils erfaßten Graustufen betreffend, kann auch bei entsprechend höherem Rechenaufwand eine komplexere Auswertung erfolgen, wobei bevor¬ zugt die Ausbildung so getroffen ist, daß das Schwarz-Weiß Bild der Banknote einer Bildelementauswertung wie z.B. einer "pat- ternrecognition" unterworfen ist. Derartige Bildauswertepro- gramme werden beispielsweise im Zusammenhang mit der Auswertung von Satellitenaufnahmen eingesetzt, wobei in diesen Fällen auch ein hohes Maß an Fehlertoleranz erzielt wird, da ggf. falsch ge¬ lesene Daten bzw. Störungen bei der Aufnahme rechnerisch kompen¬ siert werden können.In a particularly advantageous manner, the design is such that the electromagnetic steel source is designed as a steel source with short-wave light, UV or X-ray source, which ensures that even with relatively densely printed banknotes there is a maximum of evaluable signals. In addition to the possibility of simple evaluation of statistical data relating to the grayscale recorded in each case, a more complex evaluation can also be carried out with a correspondingly higher computational effort, the design preferably being such that the black and white image of the banknote is used for a picture element evaluation e.g. is subject to a "pattern recognition". Such image evaluation programs are used, for example, in connection with the evaluation of satellite images, in which case a high degree of error tolerance is also achieved, since incorrectly read data or disturbances in the image can possibly be compensated for.
Das erfindungsgemäße Verfahren wird anhand eines in der Zeich¬ nung schematisch dargestellten Ausführungsbeispieles einer ge¬ eigneten Vorrichtung näher erläutert. In der Zeichnung ist eine Banknote 1 auf einem transparenten Support 2 ersichtlich, wobei die Banknote während der fotografischen Aufnahme durch eine digitale Kamera 3 im Stillstand gehalten ist. Die Banknote 1 wird über eine als Lichtquelle ausgebildete Strahlenquelle 4 durchstrahlt. Das Signal der digitalen Kamera gelangt über Datenleitungen 5 und einen Datenkompressor bzw. Datenkonzentra¬ tor 6 zu einem Rechner 7, in welchem die entsprechende Auswer¬ tung erfolgt. Die digitale Kamera 3 soll hierbei wenigstens 32 Graustufen erfassen, wobei dann, wenn die Auswertung die Echt¬ heit bestätigt, eine entsprechendes Signal 8 für die Anzeige der Echtheit betätigt werden kann. Alternativ kann auch eine ent¬ sprechende Schleuse bzw. ein weiterer Transportmechanismus betä¬ tigt werden, um die Ablage der für echt erkannten Banknote in einem entsprechenden Schacht für die Aufnahme dieser Banknote zu ermöglichen. Die Lichtquelle kann der jeweiligen Art der zu untersuchenden Banknoten 1 angepaßt werden. Prinzipiell sind energiereiche, elektromagnetische Strahlenquellen bei dicht bedruckten Banknoten von besonderem Vorteil . Die Digitalkamera 3 soll für eine rasche und sichere Erfassung wenigstens 5 Band¬ bilder pro Sekunde mit der gewünschten Auflösung ermöglichen. Die transparente Platte 2 kann auch durch eine Lochplatte ersetzt werden, und kann insbesondere für die Festlegung der Banknoten während der Aufnahme durch Ansaugen von Luft durch entsprechende Bohrungen der Platte die sichere Stillstandslage gewährleisten. The method according to the invention is explained in more detail with reference to an exemplary embodiment of a suitable device shown schematically in the drawing. In the drawing, a banknote 1 can be seen on a transparent support 2, the banknote being held at a standstill by a digital camera 3 during the photographic recording. The banknote 1 is emitted via a radiation source 4 designed as a light source shines through. The signal from the digital camera passes via data lines 5 and a data compressor or data concentrator 6 to a computer 7, in which the corresponding evaluation takes place. The digital camera 3 is to record at least 32 gray levels, and when the evaluation confirms the authenticity, a corresponding signal 8 can be actuated to display the authenticity. Alternatively, a corresponding lock or a further transport mechanism can also be actuated in order to enable the banknote recognized as genuine to be stored in a corresponding slot for receiving this banknote. The light source can be adapted to the particular type of bank notes 1 to be examined. In principle, high-energy, electromagnetic radiation sources are particularly advantageous for densely printed banknotes. The digital camera 3 is intended to enable at least 5 band images per second with the desired resolution for rapid and reliable detection. The transparent plate 2 can also be replaced by a perforated plate, and can in particular ensure the secure standstill position for fixing the banknotes during the recording by sucking in air through corresponding holes in the plate.

Claims

Ansprüche : Expectations :
1. Verfahren zur Erkennung und zum Überprüfen der Echtheit von Banknoten mit einer elektromagnetischen Strahlenquelle, dadurch gekennzeichnet, daß ein Schwarz-Weiß Bild der durchstrahlten Banknote (1) aufgenommen wird und daß das Bild einer Auswertung der Anzahl, Häufigkeit und/oder flächenmäßigen Verteilung von wenigstens 32 erfaßten Graustufen unterworfen wird.1. A method for detecting and verifying the authenticity of banknotes with an electromagnetic radiation source, characterized in that a black and white image of the irradiated banknote (1) is recorded and that the image of an evaluation of the number, frequency and / or area distribution of is subjected to at least 32 detected gray levels.
2. Einrichtung zur Erkennung und zum Überprüfen der Echtheit von Banknoten, bei welcher die Banknote (1) in eine elektromagne¬ tische Strahlenquelle wie z.B. Lichtquelle (4) eingeschoben wird, dadurch gekennzeichnet, daß die Banknote (1) zwischen einer digitalen Kamera (3) und einer Lichtquelle (4) geführt und erfaßt wird, daß das Videosignal der Bildkamera (3) einem Rechner (7) zugeführt ist, daß wenigstens 32 Graustufen in ihrer relativen Anordnung, Häufigkeit und/oder flächenmäßigem Anteil im Bild einer Auswertung unterworfen werden und daß ein Auswer¬ tungssignal für die Echtheit einer Anzeige und/oder einer Steue- rung für die Weiterleitung der Banknote zugeführt ist.2. Device for recognizing and checking the authenticity of banknotes, in which the banknote (1) is placed in an electromagnetic radiation source such as e.g. Light source (4) is inserted, characterized in that the bank note (1) is guided between a digital camera (3) and a light source (4) and detected that the video signal of the image camera (3) is fed to a computer (7), that at least 32 gray levels in their relative arrangement, frequency and / or area share in the image are subjected to an evaluation and that an evaluation signal for the authenticity of a display and / or a control for forwarding the bank note is supplied.
3. Einrichtung nach Anspruch 2, dadurch gekennzeichnet, daß das Videosignal über eine Datenkompression (6) dem Rechner (7) zuge¬ führt ist.3. Device according to claim 2, characterized in that the video signal via a data compression (6) is the computer (7) zuge¬ leads.
4. Einrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Banknote (1) auf einer durchleuchteten Platte (2) wäh¬ rend der Aufnahme im Stillstand gehalten ist.4. Device according to claim 2 or 3, characterized in that the banknote (1) on a fluoroscopic plate (2) is held at a standstill during the recording.
5. Einrichtung nach einem der Ansprüche 2 bis 4, dadurch gekenn¬ zeichnet, daß die Auswertung wenigstens 64, vorzugsweise 128 Graustufen umfaßt.5. Device according to one of claims 2 to 4, characterized gekenn¬ characterized in that the evaluation comprises at least 64, preferably 128 gray levels.
6. Einrichtung nach einem der Ansprüche 2 bis 5, dadurch gekenn- zeichnet, daß das Graustufensignal mit Referenzsignalen ver¬ glichen wird. 6. Device according to one of claims 2 to 5, marked thereby characterized, that the gray level signal is compared with reference signals ¬ ver.
7. Einrichtung nach einem der Ansprüche 2 bis 6, dadurch gekenn¬ zeichnet, daß ein Differenzsignal von Bildsignal und Referenz¬ signal der Auswerteschaltung zugeführt ist.7. Device according to one of claims 2 to 6, characterized gekenn¬ characterized in that a difference signal of the image signal and reference signal is supplied to the evaluation circuit.
8. Einrichtung nach einem der Ansprüche 2 bis 7, dadurch gekenn¬ zeichnet, daß der Rechner (7) über eine adaptive Lernschaltung, insbesondere eine Iterationschaltung zur Kalibrierung auf eine bestimmte Banknote verfügt.8. Device according to one of claims 2 to 7, characterized gekenn¬ characterized in that the computer (7) has an adaptive learning circuit, in particular an iteration circuit for calibration to a specific bank note.
9. Einrichtung nach einem der Ansprüche 2 bis 8, dadurch gekenn¬ zeichnet, daß die elektromagnetische Strahlenquelle (4) als Strahlenquelle mit kurzwelligem Licht, UV-, - oder Röntgen- strahlenquelle ausgebildet ist.9. Device according to one of claims 2 to 8, characterized gekenn¬ characterized in that the electromagnetic radiation source (4) is designed as a radiation source with short-wave light, UV, - or X-ray source.
10. Einrichtung nach einem der Ansprüche 2 bis 9, dadurch gekennzeichnet, daß das Schwarz-Weiß Bild der Banknote (1) einer Bildelementauswertung wie z.B. einer "patternrecognition" unter¬ worfen ist. 10. Device according to one of claims 2 to 9, characterized in that the black and white image of the banknote (1) of a picture element evaluation such as is subject to a "pattern recognition".
PCT/AT1996/000205 1995-10-24 1996-10-23 Process for detecting and checking the genuineness of bank notes and device for implementing it WO1997015904A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DK96934173T DK0799460T3 (en) 1995-10-24 1996-10-23 Method for detecting and checking the authenticity of banknotes and apparatus for carrying out this method
EP96934173A EP0799460B1 (en) 1995-10-24 1996-10-23 Process for detecting and checking the genuineness of bank notes and device for implementing it
AT96934173T ATE206545T1 (en) 1995-10-24 1996-10-23 METHOD FOR DETECTING AND CHECKING THE AUTHENTICITY OF BANKNOTES AND DEVICE FOR PERFORMING THIS METHOD
DE59607830T DE59607830D1 (en) 1995-10-24 1996-10-23 METHOD FOR DETECTING AND CHECKING THE REALITY OF BANKNOTES AND DEVICE FOR IMPLEMENTING THIS METHOD
CZ19971916A CZ290214B6 (en) 1995-10-24 1996-10-23 Process for detecting and checking the genuineness of bank notes and device for implementing it
AU72651/96A AU709677B2 (en) 1995-10-24 1996-10-23 A method of identifying and authenticating banknotes as well as a device for carrying out said method
MXPA/A/1997/004692A MXPA97004692A (en) 1995-10-24 1997-06-23 A method to identify and authenticate tickets as well as the device to carry out this met

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0058095U AT1348U1 (en) 1995-10-24 1995-10-24 METHOD FOR DETECTING AND CHECKING THE REALITY OF BANKNOTES AND DEVICE FOR IMPLEMENTING THIS METHOD
ATGM580/95 1995-10-24

Publications (1)

Publication Number Publication Date
WO1997015904A1 true WO1997015904A1 (en) 1997-05-01

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PCT/AT1996/000205 WO1997015904A1 (en) 1995-10-24 1996-10-23 Process for detecting and checking the genuineness of bank notes and device for implementing it

Country Status (10)

Country Link
EP (1) EP0799460B1 (en)
AT (2) AT1348U1 (en)
AU (1) AU709677B2 (en)
CA (1) CA2207924A1 (en)
CZ (1) CZ290214B6 (en)
DE (1) DE59607830D1 (en)
DK (1) DK0799460T3 (en)
ES (1) ES2162100T3 (en)
PT (1) PT799460E (en)
WO (1) WO1997015904A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1134704A1 (en) * 1998-11-27 2001-09-19 Nittetsu Mining Co., Ltd. Genuine/counterfeit discriminating method, genuine/counterfeit discrimination object, and genuine/counterfeit discriminating device
WO2003081542A1 (en) * 2002-03-25 2003-10-02 Dongshan Bao A multiple testing apparatus for bank notes having high-technology
US6761257B2 (en) 1999-02-10 2004-07-13 Scan Coin Industries Ab Coin discriminating device, coin handling apparatus including such a device, and coin discriminating method
CN113379961A (en) * 2021-06-10 2021-09-10 广州市银科电子有限公司 Method, device, equipment and storage medium for assisting identification of bank notes and tickets

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US4208652A (en) * 1978-09-14 1980-06-17 A. C. Nielsen Company Method and apparatus for identifying images
US4557596A (en) * 1981-07-30 1985-12-10 Gao Gesellschaft Fur Automation Und Organisation Mbh Method of screening half-tone picture themes
US5020110A (en) * 1988-02-17 1991-05-28 Inter Innovation Ab Arrangement for checking documents
EP0522769A1 (en) * 1991-07-01 1993-01-13 Canon Kabushiki Kaisha Image processing apparatus
US5363949A (en) * 1991-12-18 1994-11-15 Nec Corporation Bill recognizing apparatus

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
US4208652A (en) * 1978-09-14 1980-06-17 A. C. Nielsen Company Method and apparatus for identifying images
US4557596A (en) * 1981-07-30 1985-12-10 Gao Gesellschaft Fur Automation Und Organisation Mbh Method of screening half-tone picture themes
US5020110A (en) * 1988-02-17 1991-05-28 Inter Innovation Ab Arrangement for checking documents
EP0522769A1 (en) * 1991-07-01 1993-01-13 Canon Kabushiki Kaisha Image processing apparatus
US5363949A (en) * 1991-12-18 1994-11-15 Nec Corporation Bill recognizing apparatus

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1134704A1 (en) * 1998-11-27 2001-09-19 Nittetsu Mining Co., Ltd. Genuine/counterfeit discriminating method, genuine/counterfeit discrimination object, and genuine/counterfeit discriminating device
EP1134704A4 (en) * 1998-11-27 2005-02-09 Nittetsu Mining Co Ltd Genuine/counterfeit discriminating method, genuine/counterfeit discrimination object, and genuine/counterfeit discriminating device
US6987868B1 (en) 1998-11-27 2006-01-17 Nittetsu Mining Co., Ltd. Genuine/counterfeit discriminating method, genuine/counterfeit discrimination object, and genuine/counterfeit discriminating device
US6761257B2 (en) 1999-02-10 2004-07-13 Scan Coin Industries Ab Coin discriminating device, coin handling apparatus including such a device, and coin discriminating method
WO2003081542A1 (en) * 2002-03-25 2003-10-02 Dongshan Bao A multiple testing apparatus for bank notes having high-technology
CN113379961A (en) * 2021-06-10 2021-09-10 广州市银科电子有限公司 Method, device, equipment and storage medium for assisting identification of bank notes and tickets
CN113379961B (en) * 2021-06-10 2022-04-05 广州市银科电子有限公司 Method, device, equipment and storage medium for assisting identification of bank notes and tickets

Also Published As

Publication number Publication date
CZ191697A3 (en) 1997-10-15
ATE206545T1 (en) 2001-10-15
EP0799460A1 (en) 1997-10-08
CA2207924A1 (en) 1997-05-01
AU7265196A (en) 1997-05-15
CZ290214B6 (en) 2002-06-12
AT1348U1 (en) 1997-03-25
AU709677B2 (en) 1999-09-02
DK0799460T3 (en) 2001-12-31
PT799460E (en) 2002-01-30
EP0799460B1 (en) 2001-10-04
DE59607830D1 (en) 2001-11-08
ES2162100T3 (en) 2001-12-16
MX9704692A (en) 1997-10-31

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