WO2023286390A1 - Application d'évaluation d'authenticité et système d'évaluation d'authenticité - Google Patents

Application d'évaluation d'authenticité et système d'évaluation d'authenticité Download PDF

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Publication number
WO2023286390A1
WO2023286390A1 PCT/JP2022/015229 JP2022015229W WO2023286390A1 WO 2023286390 A1 WO2023286390 A1 WO 2023286390A1 JP 2022015229 W JP2022015229 W JP 2022015229W WO 2023286390 A1 WO2023286390 A1 WO 2023286390A1
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WIPO (PCT)
Prior art keywords
information
user
shadow
application
laser
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PCT/JP2022/015229
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English (en)
Japanese (ja)
Inventor
福康 竹中
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株式会社ユーロックテクノパーツ
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Publication of WO2023286390A1 publication Critical patent/WO2023286390A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/44—Program or device authentication
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/063—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code the carrier being marginally punched or notched, e.g. having elongated slots
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q30/00—Commerce
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis

Definitions

  • the present invention relates to an authenticity determination application and an authenticity determination system, and in particular, information related to an object including a predetermined hidden mark is laser-engraved, an image of a marking member attached to the object, and processing information of the laser engraving.
  • the present invention relates to an authenticity determination application and an authenticity determination system capable of easily performing authenticity determination by comparing shadow determination information including reference shadow information obtained corresponding to.
  • a marking member may be used for the object handled by the user to distinguish it from other objects of the same type.
  • unmanned flying objects such as drones as industrial products will be obligated to attach marking members similar to automobile license plates in order to distinguish them from other drones.
  • Objects that need to be distinguished by attaching a marking member in this way are generally of high importance or high value, and are likely to be counterfeited. Although it is a marking member for distinguishing objects, if the marking member itself can be easily forged, it is not easy to confirm the authenticity of the counterfeit object to which the forged marking member is attached. Therefore, various techniques have been studied to embed hidden marks that cannot be discerned at first sight in various forms to prevent counterfeiting.
  • an electronic watermark pattern is formed as one of characters, graphics, symbols, patterns, or a logo combining these, and the electronic watermark pattern is generated as an image displayed like a pattern of an image
  • a method of displaying a digital watermark pattern is disclosed that draws or adds the image to a solid.
  • Japanese Patent Application Laid-Open No. 2002-200010 by creating a unique number of a product using an electronic watermark pattern, it is difficult for a third party to read the number. , the unique number of the product, etc. can be read.
  • the digital watermark pattern can be easily read with a magnifying glass or the like, it is difficult to prevent counterfeiting.
  • Patent Document 2 discloses an identification mark that is engraved deeper than the background pattern by overwriting laser irradiation on a display portion that becomes a background pattern formed by engraving by laser irradiation, and an identification mark that is engraved deeper than the background pattern by overwriting with laser irradiation, and a portion different from the identification mark than the background pattern.
  • a marking member is disclosed that includes deeply imprinted formed hidden marks. According to the invention described in Patent Document 2, the hidden mark is a meaningless mark at first glance and is not recognized as information by a third party, so it is difficult to forge. By checking, it becomes possible to determine whether the marking member is genuine.
  • the depth of the laser engraving can be changed in addition to the position of the hidden mark, information in the depth direction cannot be read even if enlarged with a magnifying glass. cannot
  • Patent Document 2 describes reading an image of a hidden mark with a camera of an electronic device and determining whether the marking member is correct or incorrect based on whether or not the read image matches a pattern provided in the electronic device.
  • it does not clearly state what kind of information is used to make a judgment and how to prevent counterfeiting. Therefore, it is desired to provide a mechanism that can easily determine authenticity by using such a marking member that is difficult to forge, and that can prevent forgery.
  • JP 2009-118293 A Japanese Patent No. 6755564
  • the present invention has been made in view of the problems in the conventional authenticity determination system described above.
  • An authenticity determination application which has been made to achieve the above object, is an application for determining the authenticity of an object handled by a user based on a marking member attached to the object, the application comprising: an image acquisition unit of a user terminal; The shadow information is extracted from the photographed image of the marking member captured in the application, and the consistency is evaluated by comparing the shadow determination information and the shadow information preliminarily incorporated in the application.
  • the display member is configured to control an authenticity determination unit of the user terminal so as to determine that the display member is legitimate, and the display member includes information related to the object including a predetermined hidden mark in advance.
  • At least one of the size, depth, and position of the hidden mark is laser-engraved, and at least one of the laser-engraved size, depth, and position of the hidden mark differs from user to user.
  • the application includes reference shadow information obtained corresponding to the processing information of the laser engraving and position information of the hidden mark based on data relating to the brightness of the photographed image of the laser engraving, and the application provides the shadow that differs for each user. It is characterized by being different for each user by incorporating determination information.
  • An authenticity determination system which has been made to achieve the above object, comprises an information providing server that provides an application for determining the authenticity of an object handled by a user based on a marking member attached to the object.
  • the information providing server includes a processing information storage unit for storing processing information different for each user for laser engraving information related to the object including a predetermined hidden mark on the marking member; Based on the stored relationship data between the size and depth of the laser engraving and the brightness of the photographed image of the laser engraving, reference shadow information is generated corresponding to the processing information of the laser engraving, and the reference shadow information and the hidden image are generated.
  • a shadow determination information generating unit that stores and manages mark position information as shadow determination information in a storage unit;
  • a user terminal that evaluates consistency by comparing the shadow determination information incorporated in the application with the shadow information, and determines that the marking member is legitimate when it is determined that the shadow information matches as a result of the evaluation.
  • an application management unit configured to control the authenticity determination unit of and stores different applications for each user, and provides the application to the user terminal in response to a request from the user.
  • the information related to the object including the hidden mark laser-engraved on the marking member attached to the object such as the product handled by the user can be processed under different processing conditions for each user.
  • the shadow information contained in the captured image of the laser engraving also differs for each user, and the authenticity determination application that incorporates the shadow determination information generated based on the processing information of the laser engraving also differs for each user. Therefore, unless a third party obtains an application for the user, the information stamped on the marking member attached to the user's object cannot be correctly read, making counterfeiting difficult.
  • the user can easily determine the authenticity of the marking member by activating the application for the user and importing the photographed image of the marking member.
  • a marking member manufacturer having a laser processing machine capable of fine laser processing receives an order from a user and performs laser marking under different processing conditions for each user.
  • an authenticity judgment application that incorporates laser marking shadow judgment information based on the processing conditions of , while sharing the basic technology of fine laser processing, it is possible to create marking members that can only be read by each user and authenticity using them. It becomes possible to provide judgment technology.
  • FIG. 1 is a block diagram schematically showing the basic configuration of an authenticity determination system according to an embodiment of the present invention
  • FIG. It is a figure which shows roughly the method of taking in a user terminal as a photography image of the marking member by embodiment of this invention.
  • FIG. 4 is a diagram schematically showing the correspondence between laser marking processing information and shadow information according to the embodiment of the present invention;
  • FIG. 4 is a diagram illustrating exemplary laser marking on marking members that differ for each user according to an embodiment of the present invention;
  • FIG. 4 is a diagram illustrating exemplary laser marking on marking members that differ for each user according to an embodiment of the present invention;
  • 4 is a flowchart for explaining a method for authenticity determination according to an embodiment of the present invention;
  • FIG. 1 is a block diagram schematically showing the basic configuration of an authenticity determination system according to an embodiment of the present invention.
  • an authenticity determination system 1 comprises an information providing server 10 and a plurality of user terminals 20 interconnected via a network 5 .
  • the authenticity determination system 1 extracts shadow information from a photographed image of a marking member attached to an object and inscribed with information necessary for marking by laser engraving. Utilizing the fact that laser processing conditions differ, it is determined whether the marking member attached to the object is legitimate or illegal by comparing with the shadow determination information generated in advance based on the laser processing conditions.
  • FIGS the outline of the marking member used in the authenticity determination system 1 according to the embodiment of the present invention will be described with reference to FIGS.
  • FIG. 2 is a diagram schematically showing a method of capturing a marking member as a photographed image into a user terminal according to an embodiment of the present invention.
  • a marking member 31 is attached to the main body of the drone as the object 30 .
  • the target object 30 is not limited to drones, which are scheduled to be regulated in the future, but includes all objects that require authenticity determination, and includes, for example, machines and vehicles that require reliability. Serious accidents often occur when these objects are replaced with counterfeit products, and once an accident occurs, the manufacturer is likely to be held responsible. A mechanism for easily judging whether a product is a counterfeit is important.
  • Information necessary for marking is engraved on the marking member 31 used in the authenticity determination system 1 by laser marking.
  • Information required for labeling is information related to the target object 30 , particularly information for specifying the target object 30 . Below, this information is typically referred to as display information.
  • the display information is, for example, a registration number when registered with a public institution, a production number of the object 30, a production lot number, and the like.
  • the information required for labeling may include the name of the manufacturer, the logo mark of the manufacturer, and the like.
  • the material of the marking member 31 is not particularly limited as long as it can be laser engraved.
  • a metal plate, a resin plate, or a laser engraved seal may be used.
  • the indicator member 31 is not limited to a single substance, and may be a multi-layer structure in which varnish or the like is laminated on a base material. However, it is preferable to apply a colored surface treatment or form a coating film on the surface of the indicating member 31 so that the difference in color tone and brightness between the laser-engraved portion and the non-laser-engraved portion becomes clear.
  • the marking member 31 is preferably fixed to the target object 30 so that it cannot be easily removed and replaced, and is made of a material that is easily destroyed when it is attempted to be removed from the target object 30. may be configured with
  • the depth and size of the laser engraving can be freely changed depending on the processing conditions, it is possible to process the laser engraving so that shadows appear in various forms in the photographed image 41 of the laser engraving. Furthermore, since laser processing enables fine processing, the laser engraving of the indicating member 31 used in the authenticity determination system 1 includes hidden marks that cannot be visually confirmed.
  • FIG. 2 shows a state in which a smartphone is used as the user terminal 20 and the marking member 31 is photographed.
  • the marking member 31 is taken into the user terminal 20 as a photographed image 41 .
  • the focus is automatically adjusted, and when the focus is achieved, the A photographed image 41 is taken into the user terminal 20 by an automatic shutter that is released.
  • the photographed image 41 includes an information image 42 that is an image of display information, and the information image 42 includes an image 43 of a hidden mark.
  • the hidden mark image 43 can be visually confirmed by displaying the information image 42 in an enlarged manner using the user terminal 20 .
  • FIG. 3 is a diagram schematically showing the correspondence between laser engraving processing information and shadow information according to the embodiment of the present invention.
  • FIG. 3(a) is a schematic diagram showing an enlarged laser marking portion
  • FIG. 3(b) is the front side of FIG. 3(a), that is, the laser marking portion photographed from above in FIG. 3(a). It is a schematic diagram which shows an image.
  • labeling information 32 is engraved on a part of the labeling member 31 by laser engraving, and a hidden mark 33 is engraved in the labeling information 32 .
  • the display information 32 is shown to have a rectangular outer shape in FIG. 3(a), it actually has a shape that is part of the display information 32 indicated by "123-ABC" in FIG.
  • the labeling information 32 is stamped so as to be visually recognizable. Therefore, the marking surface of the indicating information 32 is formed by burning off the surface of the indicating member 31 by irradiating the laser beam while changing the location little by little.
  • the hidden mark 33 may be formed in the same process as the laser engraving of the labeling information 32, but the labeling member 31 used in the embodiment is processed by overwriting the laser engraving of the labeling information 32 with laser engraving. do.
  • FIG. 3A shows three types of hidden marks 33 (33-1, 33-2, 33-3) having different depths by changing laser processing conditions.
  • the hidden mark 33 has a circular top surface shape and is shown as a cylindrical recess formed by laser processing, but the shape is not limited to a circle and may include marks such as characters and logo marks, and can be freely set. .
  • the display information 32 including the hidden mark 33 formed as shown in FIG. 3(a) is photographed by the user terminal 20, a photographed image 41 as shown in FIG. 3(b) is obtained.
  • the photographed image 41 of the marking member 31 includes the information image 42 of the marking information 32, and the information image 42 includes the image 43 of the hidden mark 33.
  • the image 43-1 of the hidden mark 33-1 with the shallowest laser-engraved depth is the brightest image among the images 43 of the hidden marks 33, and the image of the hidden mark 33-3 with the deepest laser-engraved depth.
  • the image 43-3 is the darkest image in the image 43 of the hidden mark 33
  • the image 43-2 of the hidden mark 33-2 of medium depth is an image of medium brightness.
  • the marking member 31 used in the authenticity determination system 1 includes marking information 32 based on criteria different for each user, such as laser processing conditions and the position of the hidden mark 33, which are different for each user.
  • a different authentication application hereinafter simply referred to as an application for the user terminal 20 that performs the determination is provided for each user. Other users cannot easily imitate the marking member 31 because the authenticity determination criteria are not communicated to them.
  • the information providing server 10 includes an input/output unit 12, a storage unit 13, a display unit 14, a user registration unit 15, a processing information storage unit 16, a shadow determination information generation unit 17, an application management unit 18, and A control unit 11 for controlling these components is provided.
  • the user registration unit 15 accepts registration of a user who uses the marking member 31, and stores and manages information about the user.
  • the user is a manufacturer that manages its own manufactured product as the target object 30 with the labeling member 31 attached thereto, or an importer that manages the imported product as the target object 30 .
  • the user registration unit 15 receives information such as the user's name, location, and e-mail address when a user newly uses the system, and stores and manages this information about the user in the storage unit 13 for each user.
  • the user registration unit 15 receives the marking information 32 necessary for laser engraving on the marking member 31 from the user at the time of initial registration or when the user needs the marking member 31, and associates it with the information about the user and stores it. Save to 13. Since there is a high possibility that the user will access the information providing server 10 repeatedly in this way, the user registration unit 15 issues a user-specific user ID and transmits it to the user terminal 20 at the time of user registration. A password corresponding to the user ID is received and stored in the storage unit 13 by including it in the information about the user. When the user inputs the user ID and password from the user terminal 20 , the user registration unit 15 provides a web page specific to the user and causes the user terminal 20 to display the web page. In the embodiment, the user registration unit 15 receives label information 32 required for laser engraving via a user-specific web page.
  • the processing information storage unit 16 stores processing information different for each user for laser-engraving display information 32 including a predetermined hidden mark 33 on the display member 31 .
  • the processing information is information indicating where and how the marking information 32 desired by the user is laser-processed, and information such as what pattern and depth the hidden mark 33 is to be formed. include.
  • Such processing information may be individually set for each user by a person in charge of laser engraving on the marking member 31, or processing items such as the type of the hidden mark 33, the size and depth of the laser engraving may be set in each column. Then, a table is created in which each type and value is assigned to each row, and the basic combination is automatically determined by uniquely selecting the row of each column according to the number included in the user ID. It is also possible to use such a setting method.
  • the shadow determination information generating unit 17 generates reference shadow information corresponding to the processing information of the laser engraving based on prestored relational data between the size and depth of the laser engraving and the brightness of the photographed image of the laser engraving, The reference shadow information and the position information of the hidden mark 33 are combined and stored in the storage unit 13 as shadow determination information for management.
  • the relationship data between the size and depth of the laser engraving and the brightness of the photographed image of the laser engraving can be obtained, for example, by laser engraving on the surface of the marking member 31 that is actually used, after forming the labeling information 32 that does not include the hidden mark 33. Additional laser engravings corresponding to hidden marks 33 of various external sizes and various depths are performed in the information 32, and obtained by photographing the marking information 32 and analyzing the shadow state of the photographed image. At this time, since the brightness changes depending on the brightness of the illumination at the time of photographing, it is not preferable to associate the laser processing conditions such as the size and depth of the laser engraving with the absolute brightness of the photographed image of the laser engraving.
  • the brightness of the captured image of the additional laser engraving is related as the relative brightness with the brightness of the marking information 32 formed by laser engraving as the reference value.
  • the relative brightness may be difference data from the brightness of the indication information 32, but in the embodiment, the value of the ratio of the brightness of the captured image of the additional laser engraving to the brightness of the indication information 32 is related.
  • the maximum difference between the brightness of the label information 32 and the brightness of the darkest photographed image of the laser engraving is obtained, and the brightness of the additional laser engraving photographed image is obtained from the label information 32. , and the ratio of the difference between the brightness of each laser engraved image to the maximum difference.
  • the shadow determination information generation unit 17 When the size of the laser engraving on the marking member 31 of the user and the depth of each laser engraving are determined, based on the relational data between the size and depth of the laser engraving and the brightness of the photographed image of the laser engraving, Since the expected brightness of the laser engraving when used is assumed, the shadow determination information generation unit 17 generates this as the reference shadow information.
  • the hidden mark 33 included in the laser engraving that is engraved in the embodiment can be arranged at any position. Therefore, the shadow determination information generation unit 17 saves and manages information obtained by combining the reference shadow information and the position of the hidden mark 33 as shadow determination information in the storage unit 13 . By generating the shadow determination information in this way, the marking member 31 to be authenticated is photographed, the shadow information is extracted, and the extracted shadow information is compared with the shadow determination information. judgment can be made.
  • an application including shadow determination information is sent from the information providing server 10 to the user terminal 20 so that the user terminal 20 can photograph the marking member 31 and perform authenticity determination. offer. Since the shadow determination information differs from user to user, the application containing this information also differs from user to user.
  • the application management unit 18 extracts shadow information from the photographed image 41 of the marking member 31 captured in the user terminal 20, compares the extracted shadow information with the shadow determination information incorporated in the application in advance, and evaluates consistency. Then, as a result of the evaluation, when it is determined that the display member 31 matches, the user terminal 20 is configured to control the user terminal 20 so as to determine that the display member 31 is valid. provided to the user terminal 20 accordingly. Since the application differs for each user, the application management unit 18 stores each application in the storage unit 13 in association with the information about the user managed by the user registration unit 15 .
  • application A is provided to user A's user terminal 20-1
  • application B is provided to user B's user terminal 20-2. Therefore, the user A can execute the application A to determine the authenticity of the marking member 31 attached to the object 30 of the user A. Since the determination information is not included, the authenticity determination of the marking member 31 attached to the target object 30 of the user B cannot be performed. Conversely, user B can execute application B to determine the authenticity of the marking member 31 attached to the object 30 of user B. cannot be done. In this way, each user can judge the authenticity of only the marking member 31 used by himself/herself, and cannot grasp the authenticity of the marking members 31 of other users. cannot be imitated.
  • the input/output unit 12 of the information providing server 10 includes communication means for inputting/outputting data to/from the user terminal 20 via the network 5 and providing applications.
  • the input/output unit 12 also includes a keyboard for inputting characters to the information providing server 10 .
  • the storage unit 13 stores data such as the issued user ID in addition to the received user information such as the user's name, location, and e-mail address. It also stores programs such as applications for each user and a control program for controlling the information providing server 10 itself.
  • the storage unit 13 is implemented by a storage medium such as a hard disk, and may be configured as an external memory device when there is a large amount of information to be stored.
  • the display unit 14 displays management information such as user information, applications provided to the user terminal 20 as necessary, and programs such as a control program for controlling the information providing server 10 .
  • the display unit 14 is put to practical use in a liquid crystal display device or the like.
  • the control unit 11 controls each component of the information providing server 10 to perform the functions described above according to the control program stored in the storage unit 13 .
  • the control unit 11 is implemented by a control circuit including a semiconductor device such as a microcomputer.
  • the user terminal 20 includes an input/output unit 22 , a storage unit 23 , a display unit 24 , an image acquisition unit 25 and an authenticity determination unit 26 .
  • the image acquisition unit 25 acquires the photographed image 41 of the marking member 31 attached to the object 30 handled by the user and stores it in the storage unit 23 .
  • the display information 32 of the display member 31 includes a hidden mark 33 of a size that cannot be visually confirmed. Therefore, the image 43 of the hidden mark 33 is included in the information image 42 in the captured image 41 captured by the image acquisition unit 25 .
  • the image 43 of the hidden mark 33 must be magnified and visually confirmed, and the shadow information of the image 43 of the hidden mark 33 must be extracted and used for authenticity determination. is required to have a level of sharpness that enables visual confirmation and extraction of shadow information. Therefore, the image acquisition unit 25 has a resolution that enables visual confirmation and extraction of shadow information.
  • the authenticity determination unit 26 extracts shadow information from the photographed image 41 of the marking member 31 captured by the image acquisition unit 25 under the control of the application provided from the information providing server 10, and obtains the shadow determination information incorporated in the application in advance. is compared with the extracted shadow information to evaluate consistency, and if it is determined that there is consistency as a result of the evaluation, it is determined that the marking member 31 is valid.
  • the extraction of shadow information may be performed on the entire photographed image 41 of the marking member 31, but in one embodiment, processing is performed by intensively extracting the shadow information of a portion necessary for authenticity determination based on the shadow determination information. reduce the time and load required for For the shadow information, the brightness of the information image 42 in the portion where the image 43 of the hidden mark 33 is not included is used as a reference brightness, and the brightness corresponding to the brightness of the image 43 of each hidden mark 33 is obtained. , and extracted in a form associated with the position information of the image 43 of each hidden mark 33 .
  • the authenticity determination unit 26 compares the shadow information extracted above with the shadow determination information, and determines whether or not the marking member 31 is legitimate based on whether the brightness and position of the hidden mark 33 match.
  • the input/output unit 22 is an input means for the user to input information such as information about the user such as the user's name and email address, and transmits the input information to the information providing server 10 via the network 5, or transmits the information.
  • a communication means for receiving a user ID and an application from the providing server 10 is provided.
  • the input means includes a keyboard or touch panel for inputting characters. In addition, it also includes a pointing device such as a mouse for selecting data displayed on the display screen.
  • the storage unit 23 temporarily stores input information such as information about the user, and stores downloaded applications and programs such as a control program for controlling basic operations of the user terminal 20 itself.
  • the storage unit 23 is implemented by a memory semiconductor, a memory module configured by a plurality of memory semiconductors, or the like.
  • the display unit 24 displays various electronic data such as input information such as a user's name and e-mail address, as well as Web page information provided by the information providing server 10 .
  • the display unit 24 is realized by a liquid crystal display device, an organic EL display device, or the like.
  • the control unit 21 controls each component of the user terminal 20 to perform the functions described above according to the control program stored in the storage unit 23 .
  • the control unit 21 is implemented by a control board on which various electronic components including a control microcomputer are mounted.
  • the user terminal 20 is implemented by an electronic device such as a personal computer, a tablet terminal, or a smart phone that includes the above components.
  • the image acquisition unit 25 is implemented by a camera included in these electronic devices.
  • the network 5 is a wide area network 5 represented by the Internet.
  • the application provided by the information providing server 10 is created with different specifications for each user, so it is provided as a dedicated application for users to users identified by their user ID and password.
  • the provided application is stored in the storage unit 23 of the user terminal 20, and when executed, prompts the user to photograph the marking member 31 via the image acquisition unit 25 of the user terminal 20, and the marking member 31 photographed and saved.
  • the shadow information is extracted from the photographed image 41, and the consistency is evaluated by comparing the shadow determination information incorporated in the application in advance with the extracted shadow information.
  • the authenticity determination unit 26 is controlled so as to determine that it is legitimate.
  • the material and size of the marking member 31 can be used in common, and the size and depth of laser engraving can be commonly applied.
  • An application for authenticity determination is possible, but if the shadow determination information is different, the application cannot be shared depending on the object 30 .
  • the information providing server 10 provides different applications for each object 30 even for the same user.
  • one application contains a plurality of pieces of shadow determination information corresponding to different objects 30, and when the application is executed, a menu for selecting the object 30 is displayed on the display unit 24, allowing the user to make a selection. , the corresponding shadow determination information is selected for authenticity determination.
  • FIG. 4 is a diagram exemplifying laser marking on marking members that differ for each user according to the embodiment of the present invention.
  • FIG. 4(a) shows a part of the marking member 31 attached to the object 30 of a certain user (A) and an enlarged view of the circled part A
  • FIG. 4(b) shows another user (B). 2 shows an enlarged view of a portion of the indicating member 31 attached to the object 30 of FIG.
  • characters "123-ABC” are laser-engraved as display information 32 on both the user (A) marking member 31 and the user (B) marking member 31. As shown in FIG. Further, as shown in the enlarged view, in each display information 32, characters "ABC" are overwritten by laser engraving as a hidden mark 33 so as to form a concave portion deeper than the display information 32. As shown in FIG.
  • the start point of the hidden mark 33 is set to be located at xa in the x direction and ya in the y direction from a certain reference point.
  • the marking member 31 of user (B) the start point of the hidden mark 33 is set to be located at xb in the x direction and yb in the y direction from the reference point.
  • the reference point is an arbitrarily set point in advance, and may be, for example, one corner of the indicating member 31, or the intersection of a line connecting the lower side of the indicating information 32 and a line connecting the left side of the leading indicating information 32.
  • a minute laser irradiation may be performed on an arbitrary point of the marking member 31 as a reference point, and the marking information 32 may be laser-marked on the basis of this.
  • FIG. 5 is a diagram exemplifying laser marking on marking members that differ for each user according to the embodiment of the present invention.
  • FIG. 5(a) shows a part of the marking member 31 attached to the object 30 of a certain user (A) and an enlarged view of the circled portion C
  • FIG. 5(b) shows another user (B). 4 shows an enlarged view of part of the indicating member 31 attached to the object 30 of FIG.
  • characters "123-ABC” are laser-engraved as display information 32 on both the user (A) marking member 31 and the user (B) marking member 31.
  • characters "ABC” are overwritten by laser engraving as hidden marks 33 in each label information 32 .
  • the difference between the two is the size of the hidden mark 33 in the display information 32.
  • information about the size of the hidden mark 33 such as ha in the shadow determination information included in the application, it is possible to determine whether or not the same characters "ABC" are stamped as legitimate. becomes possible.
  • the creation of the marking information 32 by laser engraving makes it possible to easily change the position and size of the hidden mark 33 two-dimensionally, as well as change it in the depth direction.
  • a hidden mark 33 can be built in.
  • the line thickness of characters and figures of the hidden mark 33 and the continuity of lines such as continuous lines, dashed lines, and dotted lines may be changed by different intervals of laser irradiation.
  • These various modifications may be applied to the entire hidden mark 33 overwritten on the display information 32 in common, or may be applied to a specific portion of the hidden mark 33 in the display information 32 .
  • any one character of the hidden mark 33 in the enlarged view of FIG. 4(a) may be formed deeper than the other characters, or the character style may be changed.
  • the authenticity determination system 1 changes shadow determination information for each user by incorporating different specifications for each user, and provides an application in such a manner that only the user can perform authenticity determination. This provides an authenticity determination technique that can prevent forgery and easily detect forgery.
  • FIG. 6 is a flow chart for explaining a method for determining authenticity according to an embodiment of the present invention.
  • the user takes an image of the marking member 31 using the image acquisition unit 25 of the user terminal 20, and acquires the captured image 41 of the marking member 31.
  • FIG. In one embodiment, when the user terminal 20 acquires and saves an authenticity determination application from the information providing server 10 and executes the application, the display unit 24 of the user terminal 20 displays a comment prompting the user to take a picture of the marking member 31. Then, the photographing screen of the camera is activated, and the user grasps the marking member 31 from the front according to it, and touches the photographing button 27 to capture the photographed image 41 of the marking member 31 .
  • the authenticity determination unit 26 of the user terminal 20 extracts shadow information from the photographed image 41 according to instructions from the application.
  • the brightness of the marking information 32 in the portion where the hidden mark 33 is not engraved is used as the reference brightness, and the brightness of the portion in which the hidden mark 33 is engraved is expressed as relative brightness to the reference. It is extracted as information including the relationship between height information and position.
  • step S620 the authenticity determination unit 26 compares the extracted shadow information with the shadow determination information for the marking member 31 included in the application. As a result of the comparison, it is determined whether the relationship between the position and the brightness matches (step S630).
  • the authenticity determination unit 26 determines that the marking member 31 is valid in step S640, and displays the display unit 24 of the user terminal 20. to indicate that it is a valid indicating member 31. Since the marking member 31 is legitimate, the user can determine that the object 30 to which the marking member 31 is attached is the true object 30 managed by the user.
  • step S650 if the extracted shadow information and the shadow determination information do not match as a result of the determination, it is determined in step S650 that the display member 31 is illegal, and an illegal display is displayed on the display unit 24 of the user terminal 20. The member 31 is displayed. This allows the user to determine that the target object 30 to which the unauthorized marking member 31 is attached is not the true target object 30 managed by the user, but the counterfeit target object 30 .

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Abstract

Sont prévus une application d'évaluation d'authenticité et un système d'évaluation d'authenticité qui permettent d'évaluer facilement l'authenticité.　Cette application d'évaluation d'authenticité est conçue pour commander à un terminal utilisateur d'extraire des informations d'ombre à partir d'une image capturée d'un élément marqueur, ladite image capturée ayant été prise par le terminal utilisateur, de comparer les informations d'ombre à des informations d'évaluation d'ombre qui ont été construites dans l'application à l'avance et d'évaluer une correspondance entre celles-ci, et de déterminer que l'élément marqueur est légitime s'il existe une correspondance. L'élément marqueur est marqué au laser à l'avance avec des informations relatives à un objet cible et comprenant une marque cachée prescrite, et la configuration de base de la taille de marquage laser et/ou de la profondeur de marquage laser et/ou de l'emplacement de marque cachée diffère pour chaque utilisateur. Les informations d'évaluation d'ombre comprennent des informations de localisation de marque cachée et des informations d'ombre de référence, qui sont calculées conformément à des informations de processus de marquage laser sur la base de données relationnelles entre la taille et la profondeur de marquage laser et la luminosité d'une image capturée du marquage laser. L'application diffère pour chaque utilisateur en ce que différentes informations d'évaluation d'ombre sont construites dans celle-ci pour chaque utilisateur.
PCT/JP2022/015229 2021-07-16 2022-03-28 Application d'évaluation d'authenticité et système d'évaluation d'authenticité WO2023286390A1 (fr)

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JP2021117571A JP7083200B1 (ja) 2021-07-16 2021-07-16 真贋判定アプリケーションおよび真贋判定システム
JP2021-117571 2021-07-16

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4368979A (en) * 1980-05-22 1983-01-18 Siemens Corporation Automobile identification system
JP2015022596A (ja) * 2013-07-20 2015-02-02 株式会社フォリオ 円板模様認識装置および円板選別装置
JP2020161149A (ja) * 2014-09-01 2020-10-01 日本電気株式会社 真贋判定方法、真贋判定システム、及びそのプログラム
WO2021070721A1 (fr) * 2019-10-07 2021-04-15 株式会社ユーロックテクノパーツ Élément d'affichage de signe

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3140776A4 (fr) * 2014-02-28 2018-05-02 Electro Scientific Industries, Inc. Lecteur de marques optiques
JP6822472B2 (ja) * 2016-06-28 2021-01-27 株式会社ニコン 表示装置、プログラム、表示方法および制御装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4368979A (en) * 1980-05-22 1983-01-18 Siemens Corporation Automobile identification system
JP2015022596A (ja) * 2013-07-20 2015-02-02 株式会社フォリオ 円板模様認識装置および円板選別装置
JP2020161149A (ja) * 2014-09-01 2020-10-01 日本電気株式会社 真贋判定方法、真贋判定システム、及びそのプログラム
WO2021070721A1 (fr) * 2019-10-07 2021-04-15 株式会社ユーロックテクノパーツ Élément d'affichage de signe

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