EP0799460B1 - 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 PDFInfo
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- EP0799460B1 EP0799460B1 EP96934173A EP96934173A EP0799460B1 EP 0799460 B1 EP0799460 B1 EP 0799460B1 EP 96934173 A EP96934173 A EP 96934173A EP 96934173 A EP96934173 A EP 96934173A EP 0799460 B1 EP0799460 B1 EP 0799460B1
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- banknote
- evaluation
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- 238000000034 method Methods 0.000 title claims description 9
- 238000011156 evaluation Methods 0.000 claims description 32
- 230000005670 electromagnetic radiation Effects 0.000 claims description 8
- 238000013144 data compression Methods 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 230000003044 adaptive effect Effects 0.000 claims description 2
- 238000003909 pattern recognition Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 description 6
- 238000012549 training Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 230000007723 transport mechanism Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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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
Definitions
- the invention relates to a method for detection and to check the authenticity of banknotes with an electromagnetic Radiation source and a device for detection and to check the authenticity of banknotes, in which the Banknote in an electromagnetic radiation source such as Light source is inserted.
- banknotes for example, with a Ultraviolet light source to be illuminated in incident light to enable visual control in this way
- evaluation is based on experience of the viewer, depending on the banknote certain, characteristic positions suitable for evaluation the banknote is directed.
- a number of devices are known for banknotes in which the banknote is passed under a scanner are.
- the special evaluation covers everything Usually a number of aligned to a certain banknote Criteria and takes place according to a predetermined scheme, so that a separate presetting is required for each banknote is.
- Such facilities are usually only for one Small number of different banknotes can be used if the effort should not be too high for the evaluation.
- US 5 020 110 A (see also DE 39 04 129 A) describes a device for checking known from banknotes, in which an illuminated banknote with a detector is scanned. The output signal from the detector is converted into a digital signal converted, which represents a plurality of picture elements per scan, wherein the digitization process is performed with a single bit per picture element becomes. Each picture element is therefore referred to as either white or black. It there is no intermediate form like a gray scale. Through a comparison circuit is then a comparison between the digitized signal and one of one Reference signal produced signal performed.
- the invention now aims at a method and a device to create of the type mentioned, with which a easy adaptation of the recognition to different banknotes is facilitated.
- the invention aims at over the detection effort simple procedures that can be carried out without complex computers to minimize far that a quick and safe evaluation of a large number of different banknotes possible is.
- the method according to the invention is used to achieve this object for the detection and verification of the authenticity of banknotes essentially characterized in that a black and white Image of the irradiated banknote is taken and that the Image of an evaluation of the number and / or frequency and / or area Subject to distribution of at least 32 grayscale detections becomes.
- the inventive device for detection and checking the authenticity of banknotes in which the banknote is in a electromagnetic radiation source such as Light source inserted is essentially characterized in that the banknote between a digital camera and a light source is performed and detected that the video signal of the image camera a computer is supplied that at least 32 shades of gray in their relative arrangement and / or frequency and / or area Share in the image are subjected to an evaluation and that a Evaluation signal for the authenticity of a display and / or Control for the forwarding of the banknote is fed.
- the signals to be processed should have at least 32 gray levels included on the recording side, the video signal of a corresponding Arithmetic operation can be subjected, which the Significance of the subsequent evaluation with a correspondingly reduced Computing can increase.
- the evaluation of the number the grayscale can also be based on compressed Signals take place, with the possibility beyond there is also correspondingly coded signals, such as Sum signals of the individual pixel information, in the sequence continue to evaluate. Because either the relative arrangement or the frequency or the area proportion of the grayscale in the picture in the original form of the picture signal or one appropriately modified, compressed or encoded form is subjected to an evaluation can in a very short time an evaluation signal for the authenticity of a display and / or Control for the forwarding of the banknote can be fed.
- the training is advantageously made such that the banknote on a screened plate during the recording is held at a standstill.
- Such a still picture leaves any compression and coding before further processing to, whereby in any case the reproducibility of the Transport speed of the feeder or other mechanical Parameters becomes independent.
- a further increase in the precision of the evaluation and a safe one Distinguishing an even greater number of different ones Banknotes can be guaranteed by the evaluation comprises at least 64, preferably 128 gray levels, with with Advantage compared to the grayscale signal with reference signals to get appropriate results in quick succession.
- the reference signals can either supplied to the respective computer externally in the form of data become.
- the training can be made with advantage be that the computer has an adaptive learning circuit, in particular an iteration circuit for calibration to a certain banknote has, which causes formation of reference signals is made possible by iteration.
- the training should be taken with advantage that a difference signal of image signal and reference signal of the evaluation circuit is fed.
- the training is made such that the electromagnetic radiation source as a radiation source trained with short-wave light, UV or X-ray source is, thereby ensuring that a maximum even with relatively densely printed banknotes evaluable signals results.
- the electromagnetic radiation source as a radiation source trained with short-wave light, UV or X-ray source is, thereby ensuring that a maximum even with relatively densely printed banknotes evaluable signals results.
- a more complex evaluation preferably The training is made so that the black and white picture the banknote of a picture element evaluation such as a "pattern recognition" is subject.
- Such image evaluation programs are, for example, in connection with the evaluation of satellite images, and in these cases also a high degree of fault tolerance is achieved, since incorrect reads, if necessary Computationally compensated for data or errors during recording can be.
- the inventive method is based on one in the drawing schematically illustrated embodiment of a suitable Device explained in more detail.
- a suitable Device explained in more detail.
- the banknote 1 can be seen on a transparent support 2, whereby the banknote during the photographic recording by a digital camera 3 is held at a standstill.
- the banknote 1 is via a radiation source 4 designed as a light source shines through.
- the signal from the digital camera comes through Data lines 5 and a data compressor or data concentrator 6 to a computer 7, in which the corresponding evaluation he follows.
- the digital camera 3 should be at least 32 Capture grayscale, when the evaluation is authenticity confirmed a corresponding signal 8 for the display of Authenticity can be operated.
- an appropriate one Lock or another transport mechanism operated the storage of the banknote recognized as genuine in a corresponding slot for the reception of this banknote enable.
- the light source can be of the respective type Examining banknotes 1 are adapted. Are in principle high-energy, electromagnetic radiation sources at close printed banknotes of particular advantage.
- the digital camera 3 should have at least 5 tape images for a quick and safe acquisition per second with the desired resolution.
- the transparent plate 2 can also be through a perforated plate can be replaced, and in particular for the definition of the Banknotes during intake by drawing in air appropriate holes in the plate ensure the safe standstill position guarantee.
Description
Die Erfindung bezieht sich auf ein Verfahren zur Erkennung und zum Überprüfen der Echtheit von Banknoten mit einer elektromagnetischen 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 detection and to check the authenticity of banknotes with an electromagnetic Radiation source and a device for detection and to check the authenticity of banknotes, in which the Banknote in an electromagnetic radiation source such as 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 bekannt. Die Auswertung erfolgt in diesen Fällen durch die Erfahrung des Betrachters, wobei je nach Banknote das Augenmerk auf bestimmte, charakteristische, für die Auswertung geeignete Positionen der Banknote gerichtet wird. Für eine automatische Auswertung von Banknoten sind eine Reihe von Einrichtungen bekannt geworden, bei welchen die Banknote unter einem Scanner hindurchgeführt sind. Die spezielle Auswertung erfaßt hierbei in aller Regel eine Anzahl von auf eine bestimmte Banknote hin ausgerichtete Kriterien und erfolgt nach einem vorbestimmten Schema, sodaß für jede Banknote eine gesonderte Voreinstellung erforderlich ist. Derartige Einrichtungen sind in der Regel nur für eine geringe Anzahl verschiedener Banknoten verwendbar, wenn der Aufwand für die Auswertung nicht zu hoch werden soll. Devices in which banknotes, for example, with a Ultraviolet light source to be illuminated in incident light to enable visual control in this way are known. In these cases, evaluation is based on experience of the viewer, depending on the banknote certain, characteristic positions suitable for evaluation the banknote is directed. For an automatic evaluation A number of devices are known for banknotes in which the banknote is passed under a scanner are. The special evaluation covers everything Usually a number of aligned to a certain banknote Criteria and takes place according to a predetermined scheme, so that a separate presetting is required for each banknote is. Such facilities are usually only for one Small number of different banknotes can be used if the effort should not be too high for the evaluation.
Aus US 5 020 110 A (siehe auch DE 39 04 129 A) ist eine Einrichtung zum Überprüfen von Banknoten bekannt, bei der eine beleuchtete Banknote mit einem Detektor abgetastet wird. Das Ausgangssignal des Detektors wird in ein digitales Signal umgewandelt, das eine Mehrzahl von Bildelementen pro Abtastung darstellt, wobei der Digitalisierungsvorgang mit einem einzigen Bit pro Bildelement durchgeführt wird. Jedes Bildelement wird also entweder als weiß oder schwarz bezeichnet. Es existiert keine Zwischenform, wie eine Grau-Skala. Durch eine Vergleichsschaltung wird dann einen Vergleich zwischen dem digitalisierten Signal und einem von einem Bezugsdokument produzierten Signal durchgeführt.US 5 020 110 A (see also DE 39 04 129 A) describes a device for checking known from banknotes, in which an illuminated banknote with a detector is scanned. The output signal from the detector is converted into a digital signal converted, which represents a plurality of picture elements per scan, wherein the digitization process is performed with a single bit per picture element becomes. Each picture element is therefore referred to as either white or black. It there is no intermediate form like a gray scale. Through a comparison circuit is then a comparison between the digitized signal and one of one Reference signal produced signal performed.
Die Erfindung zielt nun darauf ab, ein Verfahren und eine Einrichtung der eingangs genannten Art zu schaffen, mit welcher eine einfache Anpassung der Erkennung an unterschiedliche Banknoten erleichtert wird. Mit Rücksicht auf den immer kürzer werdenden Abstand der Neueinführung von Banknoten aus Sicherheitsgründen 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 Verfahren 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 und/oder Häufigkeit und/oder flächenmäßigen Verteilung von wenigstens 32 erfaßten Graustufen unterworfen wird. Dadurch, daß ein Schwarz-Weiß Bild der durchstrahlten 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 vorbestimmten Anzahl von wenigstens 32 erfaßten Graustufen erfolgt, der rechnerische Aufwand minimiert werden kann. Gleichzeitig läßt sich aber mit der Erfassung von 32 voneinander verschiedenen Graustufen ohne weiteres die Genauigkeit der Auswertung so weit steigern, daß nahezu alle Banknoten sicher voneinander unterschieden werden können, und für jede Banknote die erforderlichen 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 erfindungsgemäße Verfahrensweise auch auf nicht hochspezialisierten Rechenanlagen sicher erfolgen kann.The invention now aims at a method and a device to create of the type mentioned, with which a easy adaptation of the recognition to different banknotes is facilitated. In consideration of the ever shorter Distance of new banknotes for security reasons The invention aims at over the detection effort simple procedures that can be carried out without complex computers to minimize far that a quick and safe evaluation of a large number of different banknotes possible is. The method according to the invention is used to achieve this object for the detection and verification of the authenticity of banknotes essentially characterized in that a black and white Image of the irradiated banknote is taken and that the Image of an evaluation of the number and / or frequency and / or area Subject to distribution of at least 32 grayscale detections becomes. Because a black and white image of the irradiated Banknote is recorded, information becomes simultaneously from the front and back of a banknote in the shape of an accumulated sum signal evaluated, whereby that the restriction to a black and white image with a predetermined Number of at least 32 grayscale detected, the computational effort can be minimized. At the same time can, however, be detected by recording 32 different ones Grayscale so the accuracy of the evaluation Far increase that almost all banknotes are safe from each other can be distinguished, and the required for each banknote Security criteria for the decision of authenticity can be safely fulfilled. The image evaluation of a black and white Image requires a lot of computing effort, which, however, from today's computers with a favorable price-performance ratio can already be fulfilled, so that the invention Procedure also on not highly specialized Computer systems can be done safely.
Die erfindungsgemäße Einrichtung zur Erkennung und zum Überprüfen der Echtheit von Banknoten, bei welcher die Banknote in eine elektromagnetische Strahlenquelle wie z.B. Lichtquelle eingeschoben wird, ist im wesentlichen dadurch gekennzeichnet, daß die Banknote zwischen einer digitalen Kamera und einer Lichtquelle geführt und erfaßt wird, daß das Videosignal der Bildkamera einem Rechner zugeführt ist, daß wenigstens 32 Graustufen in ihrer relativen Anordnung und/oder 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 aufgenommen werden, wobei das Videosignal der Bildkamera ggf. vor der weiteren Verarbeitung einer üblichen Datenkompression, insbesondere einer Bilddatenkompression, unterzogen werden kann. Die in der Folge zu verwertenden Signale sollen zumindest 32 Graustufen aufnahmeseitig enthalten, wobei das Videosignal einer entsprechenden Rechenoperation unterworfen werden kann, welche die Signifikanz der nachfolgenden Auswertung bei entsprechend verringertem Rechenaufwand vergrößern kann. Die Auswertung der Anzahl der Graustufen kann hierbei auch ausgehend von komprimierten 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 inventive device for detection and checking the authenticity of banknotes, in which the banknote is in a electromagnetic radiation source such as Light source inserted is essentially characterized in that the banknote between a digital camera and a light source is performed and detected that the video signal of the image camera a computer is supplied that at least 32 shades of gray in their relative arrangement and / or frequency and / or area Share in the image are subjected to an evaluation and that a Evaluation signal for the authenticity of a display and / or Control for the forwarding of the banknote is fed. By capturing a between a digital camera and A still image can be taken from a banknote guided by a light source be, the video signal of the camera if necessary before the further processing of a usual data compression, in particular image data compression. In the The signals to be processed should have at least 32 gray levels included on the recording side, the video signal of a corresponding Arithmetic operation can be subjected, which the Significance of the subsequent evaluation with a correspondingly reduced Computing can increase. The evaluation of the number the grayscale can also be based on compressed Signals take place, with the possibility beyond there is also correspondingly coded signals, such as Sum signals of the individual pixel information, in the sequence continue to evaluate. Because either the relative arrangement or the frequency or the area proportion of the grayscale in the picture in the original form of the picture signal or one appropriately modified, compressed or encoded form is subjected to an evaluation can in a very short time an evaluation signal for the authenticity of a display and / or Control for the forwarding of the banknote can be fed.
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 Aufnahme im Stillstand gehalten ist. Ein derartiges Standbild läßt beliebige Kompressionen und Kodierungen vor der Weiterverarbeitung zu, wobei in jedem Fall die Reproduzierbarkeit von der Transportgeschwindigkeit des Einzuges oder anderen mechanischen Parametern unabhängig wird.To ensure the highest level of reproducibility of the recorded data ensure, the training is advantageously made such that the banknote on a screened plate during the recording is held at a standstill. Such a still picture leaves any compression and coding before further processing to, whereby in any case the reproducibility of the Transport speed of the feeder or other mechanical Parameters becomes independent.
Eine weitere Erhöhung der Präzision der Auswertung und eine sichere 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. A further increase in the precision of the evaluation and a safe one Distinguishing an even greater number of different ones Banknotes can be guaranteed by the evaluation comprises at least 64, preferably 128 gray levels, with with Advantage compared to the grayscale signal with reference signals to get appropriate results in quick succession.
Die Referenzsignale können bei einer derartigen Anordnung entweder dem jeweiligen Rechner in Form von Daten extern zugeführt werden. Alternativ kann aber mit Vorteil die Ausbildung so getroffen sein, daß der Rechner über eine adaptive Lernschaltung, insbesondere eine Iterationschaltung zur Kalibrierung auf eine bestimmte Banknote verfügt, wodurch eine Bildung von Referenzsignalen 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 Differenzsignal von Bildsignal und Referenzsignal der Auswerteschaltung zugeführt ist.With such an arrangement, the reference signals can either supplied to the respective computer externally in the form of data become. Alternatively, however, the training can be made with advantage be that the computer has an adaptive learning circuit, in particular an iteration circuit for calibration to a certain banknote has, which causes formation of reference signals is made possible by iteration. At the evaluation time and can reduce the amount of data to be processed the training should be taken with advantage that a difference signal of image signal and reference signal of the evaluation circuit is fed.
In besonders vorteilhafter Weise ist die Ausbildung so getroffen, daß die elektromagnetische Strahlenquelle als Strahlenquelle mit kurzwelligem Licht, UV-, - oder Röntgenstrahlenquelle ausgebildet 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 einfachen Auswertung von statistischen Daten, die jeweils erfaßten Graustufen betreffend, kann auch bei entsprechend höherem Rechenaufwand eine komplexere Auswertung erfolgen, wobei bevorzugt die Ausbildung so getroffen ist, daß das Schwarz-Weiß Bild der Banknote einer Bildelementauswertung wie z.B. einer "patternrecognition" unterworfen ist. Derartige Bildauswerteprogramme 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 gelesene Daten bzw. Störungen bei der Aufnahme rechnerisch kompensiert werden können.In a particularly advantageous manner, the training is made such that the electromagnetic radiation source as a radiation source trained with short-wave light, UV or X-ray source is, thereby ensuring that a maximum even with relatively densely printed banknotes evaluable signals results. In addition to the possibility of simple Evaluation of statistical data that was recorded Regarding grayscale, it can also be higher Computational complexity, a more complex evaluation, preferably The training is made so that the black and white picture the banknote of a picture element evaluation such as a "pattern recognition" is subject. Such image evaluation programs are, for example, in connection with the evaluation of satellite images, and in these cases also a high degree of fault tolerance is achieved, since incorrect reads, if necessary Computationally compensated for data or errors during recording can be.
Das erfindungsgemäße Verfahren wird anhand eines in der Zeichnung
schematisch dargestellten Ausführungsbeispieles einer geeigneten
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. Datenkonzentrator
6 zu einem Rechner 7, in welchem die entsprechende Auswertung
erfolgt. Die digitale Kamera 3 soll hierbei wenigstens 32
Graustufen erfassen, wobei dann, wenn die Auswertung die Echtheit
bestätigt, eine entsprechendes Signal 8 für die Anzeige der
Echtheit betätigt werden kann. Alternativ kann auch eine entsprechende
Schleuse bzw. ein weiterer Transportmechanismus betätigt
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 Bandbilder
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 inventive method is based on one in the drawing
schematically illustrated embodiment of a suitable
Device explained in more detail. In the drawing is one
Banknote 1 can be seen on a
Claims (10)
- A method for identifying and authenticating banknotes by the aid of an electromagnetic radiation source, characterized in that a black-and-white picture is taken of the irradiated banknote (1) and the picture is subjected to an evaluation of the number and/or frequency and/or spatial distribution of at least 32 detected grey tones.
- A device for identifying and authenticating banknotes, in which the banknote (1) is inserted in an electromagnetic radiation source such as, e.g., a light source (4), characterized in that the banknote (1) is conducted between a digital camera (3) and a light source (4) and detected, that the video signal of the camera (3) is fed to a computer (7), that at least 32 grey tones are subjected to an evaluation of their relative arrangement and/or frequency and/or spatial portion within the picture and that an authenticity evaluation signal is fed to a display and/or a control means for passing on the banknote.
- A device according to claim 2, characterized in that the video signal is fed to the computer (7) via a data compression means (6).
- A device according to claim 2 or 3, characterized in that the banknote (1) is held stationary on an irradiated plate (2) during the taking of the picture.
- A device according to any one of claims 2 to 4, characterized in that said evaluation comprises at least 64, preferably 128, grey tones.
- A device according to any one of claims 2 to 5, characterized in that the grey tone signal is compared with reference signals.
- A device according to any one of claims 2 to 6, characterized in that a difference signal of the picture signal and reference signal is fed to the evaluation circuit.
- A device according to any one of claims 2 to 7, characterized in that the computer (7) comprises an adaptive learning circuit, in particular an iteration circuit, for calibration to a defined banknote.
- A device according to any one of claims 2 to 8, characterized in that the electromagnetic radiation source (4) is designed as a radiation source comprising short-wave light, ultraviolet light, or an X-ray source.
- A device according to any one of claims 2 to 9, characterized in that the black-and-white picture of the banknote (1) is subjected to a picture element evaluation such as, e.g., pattern recognition.
Applications Claiming Priority (4)
| 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 |
| AT580/95U | 1995-10-24 | ||
| AT58095U | 1995-10-24 | ||
| 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0799460A1 EP0799460A1 (en) | 1997-10-08 |
| EP0799460B1 true EP0799460B1 (en) | 2001-10-04 |
Family
ID=3494349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96934173A Revoked EP0799460B1 (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) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000222615A (en) | 1998-11-27 | 2000-08-11 | Nittetsu Mining Co Ltd | Authenticity discriminating method, object of authenticity discrimination and autheticity discrimination device |
| SE520847C2 (en) | 1999-02-10 | 2003-09-02 | Scan Coin Ind Ab | Coin-separating device, coin-handling apparatus including such device and a method for separating coins |
| WO2003081542A1 (en) * | 2002-03-25 | 2003-10-02 | Dongshan Bao | A multiple testing apparatus for bank notes having high-technology |
| 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 |
Family Cites Families (5)
| 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 |
| SE458316B (en) * | 1988-02-17 | 1989-03-13 | Inter Innovation Ab | DEVICE FOR CONTROL OF DOCUMENTS |
| JPH0514683A (en) * | 1991-07-01 | 1993-01-22 | Canon Inc | Picture processing unit |
| JPH05166029A (en) * | 1991-12-18 | 1993-07-02 | Koufu Nippon Denki Kk | Paper money discriminating unit |
-
1995
- 1995-10-24 AT AT0058095U patent/AT1348U1/en not_active IP Right Cessation
-
1996
- 1996-10-23 CA CA002207924A patent/CA2207924A1/en not_active Abandoned
- 1996-10-23 AU AU72651/96A patent/AU709677B2/en not_active Ceased
- 1996-10-23 AT AT96934173T patent/ATE206545T1/en not_active IP Right Cessation
- 1996-10-23 WO PCT/AT1996/000205 patent/WO1997015904A1/en not_active Application Discontinuation
- 1996-10-23 ES ES96934173T patent/ES2162100T3/en not_active Expired - Lifetime
- 1996-10-23 CZ CZ19971916A patent/CZ290214B6/en not_active IP Right Cessation
- 1996-10-23 DE DE59607830T patent/DE59607830D1/en not_active Revoked
- 1996-10-23 PT PT96934173T patent/PT799460E/en unknown
- 1996-10-23 EP EP96934173A patent/EP0799460B1/en not_active Revoked
- 1996-10-23 DK DK96934173T patent/DK0799460T3/en active
Also Published As
| Publication number | Publication date |
|---|---|
| ES2162100T3 (en) | 2001-12-16 |
| EP0799460A1 (en) | 1997-10-08 |
| PT799460E (en) | 2002-01-30 |
| AT1348U1 (en) | 1997-03-25 |
| CA2207924A1 (en) | 1997-05-01 |
| WO1997015904A1 (en) | 1997-05-01 |
| AU709677B2 (en) | 1999-09-02 |
| DE59607830D1 (en) | 2001-11-08 |
| CZ290214B6 (en) | 2002-06-12 |
| ATE206545T1 (en) | 2001-10-15 |
| AU7265196A (en) | 1997-05-15 |
| DK0799460T3 (en) | 2001-12-31 |
| MX9704692A (en) | 1997-10-31 |
| CZ191697A3 (en) | 1997-10-15 |
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