WO2008111734A1 - Appareil et procédé pour reconnaître un type de billet et distinguer des faux billets au moyen d'un capteur d'image à contact - Google Patents

Appareil et procédé pour reconnaître un type de billet et distinguer des faux billets au moyen d'un capteur d'image à contact Download PDF

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Publication number
WO2008111734A1
WO2008111734A1 PCT/KR2008/000871 KR2008000871W WO2008111734A1 WO 2008111734 A1 WO2008111734 A1 WO 2008111734A1 KR 2008000871 W KR2008000871 W KR 2008000871W WO 2008111734 A1 WO2008111734 A1 WO 2008111734A1
Authority
WO
WIPO (PCT)
Prior art keywords
image
bill
light
target bill
light source
Prior art date
Application number
PCT/KR2008/000871
Other languages
English (en)
Inventor
Sang Hwan Jang
Original Assignee
Kisan Electronics Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kisan Electronics Co., Ltd. filed Critical Kisan Electronics Co., Ltd.
Publication of WO2008111734A1 publication Critical patent/WO2008111734A1/fr

Links

Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D11/00—Devices accepting coins; Devices accepting, dispensing, sorting or counting valuable papers
    • G07D11/20—Controlling or monitoring the operation of devices; Data handling
    • G07D11/22—Means for sensing or detection
    • G07D11/225—Means for sensing or detection for detecting or indicating tampering
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D11/00—Devices accepting coins; Devices accepting, dispensing, sorting or counting valuable papers
    • G07D11/20—Controlling or monitoring the operation of devices; Data handling
    • G07D11/22—Means for sensing or detection
    • 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
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D2207/00—Paper-money testing devices
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D2211/00—Paper-money handling devices

Definitions

  • the present invention relates to an apparatus and a method of recognizing a bill type and discriminating counterfeit bills using one image sensor, and more particularly, to an apparatus and a method of recognizing a bill type and discriminating counterfeit bills that can extract a reflection image and a transmission image of a target bill by using one image sensor and remarkably reduce the time required for extracting an image representing the target bill.
  • a bill counting apparatus is an apparatus for counting a plurality of bills and is used for counting securities such as checks, notes, and exchange tickets.
  • FIG. 1 is a drawing showing the internal configuration of a conventional bill counting apparatus.
  • Fig. 2 is a block diagram showing a detecting unit of the conventional bill counting apparatus in Fig. 1.
  • the conventional bill counting apparatus 1 includes a hopper 10 having a hopper sensor 12 for detecting the mounting of bills, an automatic input unit 20 for transferring bills mounted on the hopper 10 into an internal space of the bill counting apparatus, a transporting unit 30 having a driving motor 32 controlled by the hopper sensor 12 for transporting the inputted bills, a handling unit 40 for checking an error state such as overlapping bills, receiving a plurality of bills at one time, and receiving chained bills to settle the checked error state, a detecting unit 50 for detecting whether the inputted bills are a counterfeit or not, a selector 80 for selectively transferring the inputted bills into a stacker 60 or a rejecter 70 according to the detection results of the detecting unit 50, a counting unit 90 for counting the number of bills selected by the selector 80 and transferred into the stacker 60.
  • a hopper 10 having a hopper sensor 12 for detecting the mounting of bills
  • an automatic input unit 20 for transferring bills mounted on the hopper 10 into an internal space of the bill counting apparatus
  • the detecting unit 50 includes a reflecting unit 51 for extracting a reflection image of a target bill among the inputted bills, a transmitting unit 52 for extracting a transmission image of the target bill, a discriminating unit 59 for discriminating what type the target bill is or whether the target bill is a counterfeit or not.
  • the reflecting unit 51 includes a first light source 53, a reflection image sensor 55 and a reflection image extractor 57.
  • the transmitting unit 52 includes a second light source 54, a transmission image sensor 56 and a transmission image extractor 58.
  • the detecting unit 50 includes a pair of image sensors as described above, i.e., the reflection image sensor 55 and the transmission image sensor 56, the configuration of the detecting unit 50 according to the conventional bill counting apparatus 1 is too complicated. Also, there is a problem that it takes a long time to extract the reflection image and the transmission image of a target bill using the detecting unit 50 according to the conventional bill counting apparatus 1.
  • the present invention is directed to provide an apparatus and a method of recognizing a bill type and discriminating counterfeit bills that can extract a reflection image and a transmission image of a target bill by using one image sensor and remarkably reduce the time required for extracting an image representing the target bill.
  • a method of recognizing a bill type and discriminating a counterfeit bill using one image sensor including the steps of: exposing each side of a target bill to a first light and a second light each of which emits different type of light, receiving a light transmitted through and a light reflected from the target bill, extracting an integrated image representing the target bill by using the received light, dividing the integrated image into a transmission image and a reflection image and keeping the transmission image and the reflection image as data, and comparing the transmission image and the reflection image with reference data to discriminate what type the target bill is and whether the target bill is a counterfeit bill.
  • An apparatus and a method of recognizing a bill type and discriminating counterfeit bills according to the present invention use only one image sensor to extract a reflection image and a transmission image of a target bill.
  • the configuration of the apparatus can be simplified, making it easy to manufacture the apparatus.
  • the apparatus according to the present invention can rapidly recognize a bill type of a target bill and discriminate whether the target bill is a counterfeit bill because a transmission image and a reflection image of the target bill can be extracted with speed. Also, since the apparatus according to the present invention compares both of a transmission image and a reflection image with reference data, accuracy in discriminating counterfeit bills can be improved.
  • FIG. 1 is a drawing showing the internal configuration of a conventional bill counting apparatus.
  • FIG. 2 is a block diagram showing a detecting unit of the conventional bill counting apparatus in Fig. 1.
  • FIG. 3 is an apparatus of recognizing a bill type and discriminating counterfeit bills using one image sensor in accordance with an embodiment of the present invention.
  • FIG. 4 is a block diagram showing a detecting unit of the apparatus of recognizing a bill type and discriminating counterfeit bills using one image sensor in Fig. 3.
  • FIG. 5 is a flow chart showing a method of recognizing a bill type and discriminating counterfeit bills using one image sensor in accordance with an embodiment of the present invention.
  • Fig. 3 is an apparatus of recognizing a bill type and discriminating counterfeit bills using one image sensor in accordance with an embodiment of the present invention.
  • Fig. 4 is a block diagram showing a detecting unit of the apparatus of recognizing a bill type and discriminating counterfeit bills using one image sensor in Fig. 3.
  • Fig. 5 is a flow chart showing a method of recognizing a bill type and discriminating counterfeit bills using one image sensor in accordance with an embodiment of the present invention.
  • the bill counting apparatus 1 for recognizing a bill type and discriminating counterfeit bills using one image sensor in accordance with an embodiment of the present invention includes a hopper 100 on which a received target bill is mounted, an automatic input unit 200 for transferring the target bill mounted on the hopper 100 into an internal space of the bill counting apparatus 1, a transporting unit 300 for transporting the inputted target bill, a handling unit 400 for checking an error state of the target bill to settle the error state, a detecting unit 500 for detecting what type the target bill is and whether the target bill is a counterfeit or not, a selector 800 for selectively transferring the target bill into a stacker 600 or a rejecter 700 according to a detection result of the detecting unit 500, and a counting unit 900 for counting the number of bills selected by the selector 800 and transferred into the stacker 600.
  • the apparatus 1 according to the present invention has substantially a similar configuration as the apparatus in Fig. 1 except the detecting unit 500. Thus, only the detecting unit 500 is described in detail hereinafter
  • the detecting unit 500 includes a first light source 510 and a second light source 520 arranged above each side of a target bill, each irradiating different type of light to each side of the target bill, a control unit 530 for turning on and off the first light source 510 and the second light source 520 alternately, an image sensor 540 for receiving a light transmitted through and a light reflected from the target bill after being irradiated by the first light source 510 and the second light source 520, an image extractor 550 for generating an integrated image of the target bill using the light received by the image sensor 540, an image dividing unit 560 for dividing the integrated image of the target bill into a transmission image and a reflection image and keeping the divided images as data, and a discriminating unit 570 for comparing the transmission image and the reflection image with reference data to discriminate what type the target bill is and whether the target bill is a counterfeit bill.
  • the first light source 510 is arranged over one side of a transport route for the target bill and the second light source 520 is arranged over the other side of the transport route.
  • the first light source 510 and the second light source 520 are turned on, one side of the target bill is exposed to the first light and the other side of the target bill is exposed to the second light.
  • the first light is reflected from the target bill and the second light is transmitted through the target bill.
  • the first light may be a visible ray with a wavelength range of 400 to 750 nm which is reflected from the target bill.
  • the second light may be an infrared ray with a wavelength range of 750 to 1200 nm which is transmitted through the target bill.
  • the reason to expose the target bill to rays of different wavelengths is for extracting a reflection image and a transmission image of the target bill depending on the rays.
  • the present invention includes the control unit 530 for turning on and off the first light source 510 and the second light source 520 alternately.
  • the present invention can prevent the backlight from being generated on the opposite side to the one side of the target bill exposed to the first light or the second light.
  • the resolution of the extracted image is improved.
  • the image sensor 540 receives a reflected light from the target bill, irradiated by the first light source 510 and a transmitted light through the target bill, irradiated by the second light source 520 to extract a transmission image and a reflection image. Since the conventional apparatus receives a reflected light and a transmitted light separately to extract a reflection image and a transmission image respectively, the conventional apparatus should include a pair of image sensors 55 and 56 and a pair of image extractors 57 and 58. Hence, the configuration of the conventional apparatus is complicated and it takes lots of time to extract a reflection image and a transmission image. In order to solve the problem, the apparatus according to the present invention includes one image sensor 540 that can receive both of a reflected light and a transmitted light. Since the apparatus according to the present invention includes only one image sensor, the configuration of the apparatus is simplified and the apparatus according to the present invention can rapidly extract a reflection image and a transmission image in comparison with the conventional apparatus.
  • the image sensor 540 is a Contact Image Sensor CIS including a plurality of light receiving chips arranged in one or more lines. Detailed description about the contact image sensor is omitted because the contact image sensor is well known to those having ordinary skill in the art.
  • the position of the image sensor 540 is very important.
  • the image sensor 540 should be arranged on a position that both of a reflected light and a transmitted light can be received.
  • the image sensor 540 should be arranged in a position that can receive both reflected and transmitted light, that is, a position on the same side as the first light source and at the same time opposite side to the second light source 520.
  • the image sensor 540 should be arranged in a position overlapped by a first space on the same side as the second light source 520 and a second space that can receive a transmitted light through the target bill from the first light.
  • the image extractor 550 extracts an integrated image of the target bill using the tran smitted light and the reflected light received from the image sensor.
  • the image extractor 550 according to the present invention does not extract a reflection image and a transmission image of the target bill separately but extracts an integrated image as described above. Because of that, the image extractor 550 can reduce the time required for extracting an image of the target bill.
  • the image dividing unit 560 divides the integrated image extracted by the image extractor 550 into a transmission image and a reflection image and keeps the transmission image and the reflection image as data in order to easily perform image transmission and comparison operation.
  • the discriminating unit 570 compares each of the transmission image and the reflection image kept as data with reference data to discriminate what type the target bill is and whether the target bill is a counterfeit bill.
  • the selector 800 transfers the target bill into the stacker 600 or the rejecter 700 according to the discrimination result of the discriminating unit 570.
  • the apparatus including the detecting unit 500 configured as described above can have a simplified configuration and can be easily fabricated. Also, the apparatus can rapidly extract an image representing a target bill and can enhance accuracy in discriminating counterfeits since both of the transmission image and the reflection image are used.
  • the first light source 510 and the second light source 520 irradiate different type of light (for example, an infrared ray and a visible ray) to each side of the target bill (SlOl).
  • the control unit 530 controls the first light source 510 and the second light source 520 to be turned on and off at a prescribed interval so that each of the first light source and the second light source can irradiate light alternately.
  • the image sensor 540 receives a light transmitted through and a light reflected from the target bill after being irradiated alternately from the first light source 510 and the second light source 520 (S 103).
  • the image sensor 540 can be configured by a contact image sensor including a plurality of light receiving chips arranged in one or more lines.
  • the contact image sensor can receive both of a transmitted light and a reflected light to extract a transmission image and a reflection image.
  • the image extractor 550 extracts an integrated image of the target bill using the transmitted light and the reflected light received by the image sensor 540 (S 105). As such, in case that the image extractor extracts the integrated image of a transmission image and a reflection image, it can reduce the time required for extracting an image representing the target bill.
  • the image dividing unit 560 divides the extracted image into a transmission image and a reflection image in order to compare and analyze each of the transmission image and the reflection image (S 107). Furthermore, the image dividing unit 560 has a function that can keep the transmission image and the reflection image as data.
  • the transmission image and the reflection image kept as data are transferred into the discriminating unit 570 to be compared with reference data representing a normal bill.
  • the discriminating unit 570 it is discriminated what type the target bill is and whether the target bill is a counterfeit bill or not (S 109).
  • the selector 800 transfers the target bill into the stacker 600 or the rejecter 700 according to the discrimination result of the discriminating unit 570.
  • the present invention can be adapted for securities including checks, notes, and exchange tickets.

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

Abstract

L'invention concerne un appareil et un procédé qui permettent de reconnaître un type de billet et de distinguer des faux billets au moyen d'un capteur d'image. L'appareil de l'invention comprend une première source lumineuse et une deuxième source lumineuse disposées sur chaque face d'un billet cible afin que chaque face du billet cible soit exposée à un différent type de lumière; un capteur d'image qui permet de recevoir une lumière réfléchie par le billet cible et une lumière transmise par le billet cible; un extracteur d'image qui permet d'extraire une image intégrée du billet cible au moyen de la lumière transmise et de la lumière réfléchie; une unité de division d'image qui permet de diviser l'image extraite en une image de transmission et une image de réflexion; et une unité de distinction qui permet de comparer l'image de transmission et l'image de réflexion à des données de référence. L'appareil de la présente invention n'utilise qu'un capteur d'image, ce qui permet d'en simplifier la configuration et la fabrication. L'appareil permet également de reconnaître rapidement et avec précision le type de billet et des faux billets par extraction rapide d'une image de transmission et d'une image de réflexion et par comparaison desdites images à des données de référence.
PCT/KR2008/000871 2007-03-09 2008-02-14 Appareil et procédé pour reconnaître un type de billet et distinguer des faux billets au moyen d'un capteur d'image à contact WO2008111734A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2007-0023552 2007-03-09
KR1020070023552A KR20080082798A (ko) 2007-03-09 2007-03-09 하나의 이미지 센서를 이용한 권종인식 및 위폐검출 장치와방법

Publications (1)

Publication Number Publication Date
WO2008111734A1 true WO2008111734A1 (fr) 2008-09-18

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PCT/KR2008/000871 WO2008111734A1 (fr) 2007-03-09 2008-02-14 Appareil et procédé pour reconnaître un type de billet et distinguer des faux billets au moyen d'un capteur d'image à contact

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KR (1) KR20080082798A (fr)
WO (1) WO2008111734A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106940912A (zh) * 2016-08-18 2017-07-11 郑祥豹 一种防伪点验钞机
CN107895424A (zh) * 2017-10-31 2018-04-10 深圳怡化电脑股份有限公司 一种纸币的识别方法、系统及金融终端
CN108428279A (zh) * 2018-03-02 2018-08-21 深圳怡化电脑股份有限公司 纸币识别方法及装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101397791B1 (ko) * 2012-05-08 2014-05-20 주식회사 엘지씨엔에스 매체 인식 장치 및 금융기기
KR101384906B1 (ko) * 2012-08-06 2014-04-11 주식회사 엘지씨엔에스 이미지 처리 장치 및 방법
KR101385774B1 (ko) * 2012-10-04 2014-04-17 기산전자 주식회사 테라헤르츠 전자기파를 이용한 위폐검출장치 및 검출방법
KR101385773B1 (ko) * 2012-10-04 2014-04-17 기산전자 주식회사 테라헤르츠 전자기파를 이용한 권종 인식 장치 및 그 방법

Citations (4)

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KR19980014330A (ko) * 1996-08-09 1998-05-25 이진주 지폐 식별기 및 그 제어방법
KR19980014331A (ko) * 1996-08-09 1998-05-25 이진주 지폐 식별기 및 지폐 식별방법
US6774986B2 (en) * 1996-11-15 2004-08-10 Diebold, Incorporated Apparatus and method for correlating a suspect note deposited in an automated banking machine with the depositor
US6908029B2 (en) * 2001-03-16 2005-06-21 Glory Ltd. Bill counter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980014330A (ko) * 1996-08-09 1998-05-25 이진주 지폐 식별기 및 그 제어방법
KR19980014331A (ko) * 1996-08-09 1998-05-25 이진주 지폐 식별기 및 지폐 식별방법
US6774986B2 (en) * 1996-11-15 2004-08-10 Diebold, Incorporated Apparatus and method for correlating a suspect note deposited in an automated banking machine with the depositor
US6908029B2 (en) * 2001-03-16 2005-06-21 Glory Ltd. Bill counter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106940912A (zh) * 2016-08-18 2017-07-11 郑祥豹 一种防伪点验钞机
CN107895424A (zh) * 2017-10-31 2018-04-10 深圳怡化电脑股份有限公司 一种纸币的识别方法、系统及金融终端
CN108428279A (zh) * 2018-03-02 2018-08-21 深圳怡化电脑股份有限公司 纸币识别方法及装置
CN108428279B (zh) * 2018-03-02 2020-10-20 深圳怡化电脑股份有限公司 纸币识别方法及装置

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