WO2015172466A1 - Procédé d'analyse d'authenticité de titre négociable et dispositif associé - Google Patents

Procédé d'analyse d'authenticité de titre négociable et dispositif associé Download PDF

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Publication number
WO2015172466A1
WO2015172466A1 PCT/CN2014/085913 CN2014085913W WO2015172466A1 WO 2015172466 A1 WO2015172466 A1 WO 2015172466A1 CN 2014085913 W CN2014085913 W CN 2014085913W WO 2015172466 A1 WO2015172466 A1 WO 2015172466A1
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WO
WIPO (PCT)
Prior art keywords
securities
image
detected
magnetic
composite image
Prior art date
Application number
PCT/CN2014/085913
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English (en)
Chinese (zh)
Inventor
俞路
Original Assignee
苏州保瑟佳货币检测科技有限公司
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.)
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Application filed by 苏州保瑟佳货币检测科技有限公司 filed Critical 苏州保瑟佳货币检测科技有限公司
Publication of WO2015172466A1 publication Critical patent/WO2015172466A1/fr

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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
    • G07D7/20—Testing patterns thereon
    • G07D7/202—Testing patterns thereon using pattern matching
    • G07D7/2041—Matching statistical distributions, e.g. of particle sizes orientations

Definitions

  • the invention belongs to the technical field of authenticity inspection, and in particular relates to a method for authenticity verification of valuable securities and related devices.
  • the authenticity test for valuable securities is mainly divided into two types: image detection and magnetic detection.
  • the magnetic detection mainly detects whether a certain area or some areas of the securities have magnetic properties and magnetic strength.
  • the counterfeiters can easily smear the magnetic powder materials on the magnetic regions of the securities to falsify the securities.
  • an object of the present invention is to provide a method for authenticating and verifying securities and related devices, which can improve the accuracy of the test results.
  • the present invention provides a method for authenticity verification of a valued security, comprising:
  • scanning the magnetic distribution of the detected securities to obtain a magnetic distribution image of the securities comprises: scanning a magnetic distribution of the magnetic regions of the detected securities to obtain a magnetic distribution of the magnetic regions of the securities Image; optically scanning the detected value document to obtain a light image of the value document includes optically scanning the magnetic region of the detected value document to obtain a light image of the magnetic region of the value document.
  • the above verification method may further comprise: determining a location of a magnetic region of the value document.
  • comparing the composite image of the detected securities with the pre-stored composite image of the real securities includes:
  • the composite image of the detected securities is compared with the previously stored composite image of the corresponding type of real securities according to the type of the securities to be detected.
  • the composite image of the detected securities is compared with the composite image of the pre-stored real securities, and determining whether the image features of the two match includes:
  • the texture features of the composite image of the detected securities are compared with the texture features of the composite image of the pre-stored real securities, and whether the texture features of the two match are determined.
  • Another aspect of the present invention also provides an authenticity verification device for a securities, the device comprising:
  • a magnetic distribution image scanning unit for scanning a magnetic distribution of the detected securities to obtain a magnetic distribution image of the securities
  • An optical scanning unit for optically scanning the detected securities to obtain a light image of the securities
  • An image synthesizing unit configured to cross-overlap the magnetic distribution image and the optical image to obtain a composite image of the detected securities
  • an image comparison unit configured to compare the composite image of the detected securities with the pre-stored composite image of the real securities, determine whether the image features match, and if so, determine that the detected securities are Really valuable securities; otherwise, it is determined that the tested securities are fake securities.
  • the optical scanning unit comprises:
  • a visible light emitter for emitting visible light to the detected security
  • the light receiver is configured to receive the reflected light reflected back from the detected value document to obtain a visible light image signal of the detected value document.
  • the device further includes a first amplifier and a first analog to digital converter connected in sequence;
  • a first amplifier for amplifying a signal of the optical image output by the optical scanning unit
  • the first analog-to-digital converter is configured to perform analog-to-digital conversion on the signal of the amplified optical image output by the first amplifier, and output the signal to the image synthesizing unit.
  • the device further includes a second amplifier and a second analog to digital converter connected in sequence;
  • a second amplifier for amplifying a signal of the magnetic distribution image output by the magnetic distribution image scanning unit
  • the second digital-to-analog converter is configured to perform analog-to-digital conversion on the signal of the amplified magnetic distribution image output by the second amplifier, and output the signal to the image synthesizing unit.
  • the image comparison unit is configured to compare the texture features of the composite image of the detected securities with the texture features of the composite image of the pre-stored real securities, and determine whether the texture features of the two match.
  • a magnetic distribution image and a light image of the detected securities are acquired, and the two images are subjected to cross-overlap processing to obtain a composite image, and an image of the contract image of the composite image and the real securities is obtained. Whether the feature matches and judges the authenticity of the securities, the detection result is more accurate than the magnetic detection method in the prior art.
  • FIG. 1 is a schematic flow chart of an embodiment of an authenticity verification method for a securities provided by the present invention
  • FIG. 2 is a schematic diagram of an embodiment of an authenticity verification apparatus for a securities provided by the present invention
  • FIG. 3 is a schematic diagram of a specific implementation of the authenticity verification apparatus for the securities in the embodiment of FIG.
  • FIG. 1 is a schematic flow chart of an embodiment of an authenticity verification method for a securities provided by the present invention.
  • the securities include, but are not limited to, banknotes, vouchers, and the like.
  • the method is as follows:
  • Step S101 Scanning the magnetic distribution of the detected securities to obtain a magnetic distribution image of the securities.
  • the magnetic detection in the prior art only detects the presence or absence of magnetic properties in the region, and in the embodiment of the invention, the magnetic distribution of the securities is scanned to obtain a magnetic distribution image.
  • a full-scale magnetic distribution scan can be performed on the detected securities to obtain a full-scale magnetic distribution image.
  • the valuable securities are often only a part of the area.
  • consideration may be considered. Only the magnetic distribution of the magnetic region of the detected securities is scanned to obtain a magnetic distribution image of the magnetic region of the securities.
  • the method may further comprise the step of determining the position of the magnetic region of the value document, the problem being solved at least Two schemes, one scheme is: directly searching for the position of the magnetic region corresponding to the current type of securities according to the information of the magnetic region positions of the various securities obtained, for example, the magnetic region position of the 5-yuan denomination banknote And the magnetic region position of the 10-yuan denomination banknote is known in advance, so that when a 5-yuan denomination banknote is actually scanned for magnetic distribution, the position of the magnetic region of the banknote can be quickly known; another solution is to determine while scanning.
  • the method of scanning the valuable securities progressively defining the boundary where the magnetic distribution is scanned as the boundary of the magnetic region, thereby obtaining the information of the magnetic region, and the boundary of the magnetic distribution may be the smallest rectangle capable of enclosing the magnetic distribution.
  • the area can also be defined as the area between the first occurrence of magnetic lines and the last occurrence of magnetic lines.
  • Step S102 Optically scanning the detected securities to obtain a light image of the securities.
  • the optical scanning here can be done by using visible light or by using invisible light (such as infrared light, ultraviolet light, etc.).
  • a specific implementation manner is: performing optical scanning of visible light on the detected securities to obtain a visible light image of the detected securities.
  • step S101 If the full-scale magnetic distribution image is scanned for the detected valuable securities in step S101 to obtain a full-width magnetic distribution image, then in step S102, the detected valuable securities are also subjected to full-width optical scanning to obtain a full-width optical image. If the magnetic distribution of the magnetic region of the detected securities is scanned in step S101, the magnetic region of the detected securities is also optically scanned in step S102 to obtain the light of the magnetic region of the securities. image.
  • steps S101 and S102 it is not necessary to generate a real image in steps S101 and S102, and it is possible to scan an image signal, such as a signal of a light image or a signal of a magnetic distribution image.
  • an image signal such as a signal of a light image or a signal of a magnetic distribution image.
  • Step S103 The magnetic distribution image obtained in step S101 is subjected to cross-overlap processing with the optical image obtained in step S102 to obtain a composite image of the detected valuable securities.
  • an area of the securities is optically scanned to obtain an avatar whose light image is a person
  • the magnetic distribution of the area of the securities is scanned to obtain a magnetic distribution image of the area, and then the optical image and magnetic distribution thereof are obtained.
  • the image is subjected to cross-overlap processing to obtain a magnetic distribution image at an arbitrary position of the avatar.
  • the texture feature of a point on the composite image obtained in this step contains the magnetic distribution feature of the point and the characteristics of the light image of the point.
  • Step S104 Comparing the synthesized image of the detected securities with the composite image of the pre-stored real securities, determining whether the image features match, and if so, determining that the detected securities are genuinely valuable. Securities; otherwise, it is determined that the detected securities are false securities.
  • the texture features of the composite image of the detected securities are compared with the texture features of the pre-stored composite image of the real securities. , to determine whether the image features match.
  • the scanning resolution of the magnetic distribution image and the light image acquisition can meet certain requirements, for example, 50-100 DPI.
  • the composite image of the detected securities may be compared with the pre-stored composite image of the corresponding class of real securities according to the type of the securities to be detected, and the image is judged. Whether the features match.
  • the categories referred to here generally refer to categories that are relatively easy to distinguish with the naked eye without relying on the detection of smart devices.
  • securities can be classified according to country: RMB, French currency, US dollar, etc.
  • RMB French currency
  • US dollar etc.
  • RMB 5 yuan a variety of categories can be combined, such as RMB 5 yuan. This can be easily distinguished from the naked eye, and then it can be compared with a pre-stored composite image of 5 yuan of real securities.
  • the authenticity verification method of the securities in this embodiment acquires the magnetic distribution image and the light image of the detected securities, and cross-overlaps the two images to obtain a composite image, and the composite image and the real securities are Whether the image features of the contract image match and judge the authenticity of the securities, the detection result is more accurate than the magnetic detection method in the prior art.
  • the apparatus includes: a magnetic distribution image scanning unit 201, an optical scanning unit 202, and an image synthesis unit. 204 and image comparison unit 203.
  • the magnetic distribution image scanning unit 201 scans the magnetic distribution of the detected securities to obtain a magnetic distribution image of the valuable securities.
  • a full-scale magnetic distribution scan can be performed on the detected securities to obtain a full-scale magnetic distribution image.
  • the valuable securities are often only a part of the area.
  • consideration may be considered. Only the magnetic distribution of the magnetic region of the detected securities is scanned to obtain a magnetic distribution image of the magnetic region of the securities.
  • the magnetic region determining unit 205 can also be added for determining the magnetic region position of the value document.
  • the magnetic region determining unit 205 determines the location by at least two types.
  • One solution is to directly find the location of the magnetic region corresponding to the current value of the securities according to the information of the magnetic region positions of the various securities that have been obtained.
  • the magnetic region position of the 5-yuan denomination banknote and the magnetic region position of the 10-yuan denomination banknote are known in advance, so that when a 5-yuan denomination banknote is actually scanned for magnetic distribution image, the magnetic region of the banknote can be quickly known.
  • Position another scheme is to determine the side by scanning: that is, scanning the securities on a line-by-line basis, and defining a boundary of the magnetic distribution image as a boundary of the magnetic region, thereby obtaining information of the magnetic region, the magnetic distribution image
  • the boundary may be the smallest rectangular area capable of encasing the magnetic distribution image, or may be defined as the area between the first occurrence of the magnetic line and the last occurrence of the magnetic line.
  • Optical scanning unit 202 optically scans the detected value document to obtain a light image of the value document.
  • the optical scanning here can be done by using visible light or by using invisible light (such as infrared light, ultraviolet light, etc.).
  • the optical scanning unit 202 includes a visible light generator and a light receiver, wherein the visible light emitter emits visible light to the detected securities, and the light receiver receives reflections reflected from the detected valuable securities. Light, the visible light image signal of the detected securities is obtained.
  • the image synthesizing unit 204 cross-overlaps the magnetic distribution image obtained by the magnetic distribution image scanning unit 201 and the optical image obtained by the optical scanning unit 202 to obtain a composite image of the detected valuable securities.
  • the image comparison unit 203 compares the composite image of the detected securities with the composite image of the pre-stored real securities, determines whether the image features match, and if so, determines that the detected securities are true. Securities; otherwise, it is determined that the tested securities are false securities.
  • the image matching unit 203 passes the texture image of the composite image of the detected security document and the composite image of the pre-stored real securities.
  • the texture features are compared to determine whether the image features of the magnetic distribution image and the light image match.
  • Fig. 3 is a block diagram showing a concrete implementation of the authenticity checking apparatus for the securities in the embodiment of Fig. 2.
  • the apparatus includes a casing 35, and a magnetic distribution image scanning unit 201' and an optical scanning unit 202' are arranged side by side along the width direction of the casing, and the magnetic distribution image scanning unit 201' is adjacent to the banknote exit direction.
  • the optical scanning unit 202' is in the direction of the banknote entrance.
  • the banknote 4 enters the authenticity check device from the entrance close to the side of the optical scanning unit 202', and performs optical scanning and magnetic distribution image scanning.
  • the magnetic distribution image scanning unit 201' and the optical scanning unit 202' can be regarded as a combined sensor.
  • the image synthesizing unit and the image matching unit are integrated in the CPU 203'.
  • the optical image signal output from the optical scanning unit 202' is sequentially subjected to amplification by the first amplifier 31 and analog-digital conversion by the first analog-to-digital converter 32, and then output to the CPU 203'.
  • the magnetic distribution image signal output from the magnetic distribution image scanning unit 201' is sequentially subjected to amplification by the second amplifier 33 and analog-digital conversion by the second digital-to-analog converter 34, and then output to the CPU 203'.
  • the apparatus includes other mating units, such as rollers 36, to drive the securities forward.

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  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)

Abstract

L'invention concerne un procédé d'analyse d'authenticité de titre négociable et un dispositif associé, le procédé consistant : à balayer la distribution d'aimantation d'un titre négociable analysé afin d'obtenir l'image de distribution d'aimantation du titre négociable, et à effectuer une numérisation optique du titre négociable analysé afin d'obtenir l'image optique du titre négociable ; à superposer l'image de distribution d'aimantation et l'image optique afin d'obtenir l'image composite du titre négociable ; à comparer l'image composite du titre négociable analysé à une image composite pré-stockée d'un titre négociable authentique afin de déterminer si des caractéristiques d'image correspondent ; si tel est le cas, alors à déterminer que le titre négociable analysé est un titre négociable authentique ; si tel n'est pas le cas, alors à déterminer que le titre négociable analysé est un faux titre négociable.
PCT/CN2014/085913 2014-05-13 2014-09-04 Procédé d'analyse d'authenticité de titre négociable et dispositif associé WO2015172466A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410201007.XA CN104008597A (zh) 2014-05-13 2014-05-13 一种有价证券的真伪检验方法及相关装置
CN201410201007.X 2014-05-13

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WO2015172466A1 true WO2015172466A1 (fr) 2015-11-19

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CN104008597A (zh) * 2014-05-13 2014-08-27 苏州保瑟佳货币检测科技有限公司 一种有价证券的真伪检验方法及相关装置
CN104361674A (zh) * 2014-09-30 2015-02-18 浙江维融电子科技股份有限公司 纸币识别方法及装置
CN104700492B (zh) * 2015-03-24 2017-06-13 苏州保瑟佳货币检测科技有限公司 一种有价证券的防伪检测方法及装置

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CN201117019Y (zh) * 2007-08-30 2008-09-17 黄伟根 使用磁性材料和图形进行防伪的检票装置
CN101520912A (zh) * 2008-02-29 2009-09-02 富士通先端科技株式会社 纸张种类鉴别装置及纸张种类鉴别方法
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