WO2016190107A1 - Authenticity determination assistance device, authenticity determination assistance method, authenticity determination assistance program, and computer-readable medium containing authenticity determination assistance program - Google Patents

Abstract

An authenticity determination assistance device for assisting in determining the authenticity of a counterfeit prevention medium provided on an object the authenticity of which is to be determined. This authenticity determination assistance device is equipped with: a correct image acquisition unit, which acquires as a correct image a light pattern emitted by an authentic counterfeit prevention medium at the same imaging angle as a captured image capturing the light pattern emitted by a counterfeit prevention medium with respect to incident light; and an image control unit, which generates and outputs image data wherein the captured image and the correct image are side by side.

Description

Authentication determination support device, authentication determination support method, authentication determination support program, and computer-readable medium including authentication determination support program

The present invention relates to an authenticity determination support device, an authenticity determination support method, an authenticity determination support program, and an authenticity determination support that can be used for authenticating securities such as gift certificates, credit cards, and forgery of branded products and equipment parts. The present invention relates to a computer readable medium including a program.
This application claims priority based on Japanese Patent Application No. 2015-106508 for which it applied to Japan on May 26, 2015, and uses the content here.

Traditionally, securities such as banknotes, stock certificates, gift certificates, credit cards, and other products such as pharmaceuticals, foodstuffs, and luxury brand products have been provided with anti-counterfeit media to prevent unauthorized use due to counterfeiting and duplication of products. May be granted. In securities, a forgery prevention medium is directly printed or transferred. In addition, the product is provided with a seal seal or tag provided with a forgery prevention medium.
The security performance of this anti-counterfeit medium has been ensured on the premise that the purchaser visually recognizes special printed matter and holograms that are difficult to forge. However, in recent years, sophisticated counterfeit products of anti-counterfeit media have been circulated around the world, and it is difficult for end-user purchasers to distinguish authenticity of anti-counterfeit media (identification of genuine or counterfeit). It is.

As an example of the above-described anti-counterfeit medium, an optically variable device (OVD) such as a diffraction grating or a hologram whose color or pattern changes depending on an observation angle or a light source position for observing the anti-counterfeit medium, color, or brightness. Changing security inks (optically variable inks) are known.
Also, there are cases in which forgery prevention is achieved by imparting individuality to a paper base material such as a watermark, or latent image intaglio printing.

目視 Whether the anti-counterfeiting medium is true or false can be easily identified by visual inspection by experts familiar with security products. However, the end user does not know what the anti-counterfeiting medium behaves is true, that is, it is determined as a correct answer. For example, in the case of a hologram, if it returns a certain spectrum, it may be erroneously recognized as genuine. There is.

If the authenticity of the anti-counterfeit medium cannot be visually checked, a special authenticity determination device that can strictly control the imaging angle and the imaging position may be used. For example, authenticity determination is performed by carrying a hologram film into a light irradiation unit provided with two types of light guide plates having different irradiation angles using a transport unit and detecting the diffracted light (see, for example, Patent Document 1). However, the authenticity determination is performed only for a specific hologram, and a dedicated device is required for each specific hologram.

In addition, in order to make it possible to use a conventional authenticity determination system even for a voucher including a new anti-counterfeit medium, there is also an apparatus provided with a plurality of reading means and reading methods in advance and a communication means for data update in a terminal. (For example, refer to Patent Document 2). However, since the apparatus disclosed in Patent Document 2 is also an authenticity determination system dedicated to authenticity determination, the end user cannot easily use it for authenticity determination of an anti-counterfeit medium.
As described above, the authenticity determination for the conventional anti-counterfeit medium is a dedicated device that only performs the authenticity determination of the anti-counterfeit medium and cannot be used easily by the end user. For this reason, it becomes a big burden for an end user.

Japanese Patent No. 5540833 Japanese Patent No. 4249444

The present invention has been made in view of the above situation, and it is not necessary to use a special authenticity determination device, and an observer can determine the authenticity of an anti-counterfeit medium using a simple imaging device such as a general-purpose digital camera. Provided is a computer-readable medium including an authentication determination support device, an authentication determination support method, an authentication determination support program, and an authentication determination support program that performs support that can be easily performed.

The authenticity determination support apparatus according to the first aspect of the present invention is an authenticity determination support apparatus that supports authenticity determination of an anti-counterfeit medium provided on an authenticity determination object, and outputs the anti-counterfeit medium with respect to incident light. A correct image acquisition unit that obtains a light pattern emitted from a true anti-counterfeit medium as a correct image at the same imaging angle as the captured image obtained by capturing the light pattern, and the captured image and the correct image are arranged. An image control unit that generates and outputs image data.

The authenticity determination support device according to the first aspect of the present invention analyzes a determination medium image obtained by capturing an object determination medium provided on the authenticity determination target object, which indicates a type of the forgery prevention medium, and the determination medium It may further comprise a type specifying unit for extracting the discrimination code from the image and specifying the type of the forgery prevention medium.

In the authenticity determination support device according to the first aspect of the present invention, the correct image acquisition unit may determine the correct image according to the type specified by the type specifying unit.

The authenticity determination support apparatus according to the first aspect of the present invention may further include an angle estimation unit that estimates an imaging angle of the captured image from the image of the forgery prevention medium in the captured image.

In the authenticity determination support device according to the first aspect of the present invention, the correct image acquisition unit may acquire the correct image at an angle corresponding to the imaging angle estimated by the angle estimation unit.

The authenticity determination support device according to the first aspect of the present invention further includes a database storing the correct image corresponding to the type of the forgery prevention medium specified by the type specifying unit and the imaging angle, and acquiring the correct image The unit may acquire the correct image by reading the correct image corresponding to the type and the imaging angle from the database.

The authenticity determination support method according to the second aspect of the present invention is an authenticity determination support method for supporting authenticity determination of an anti-counterfeit medium provided in an authenticity determination target object, wherein the correct image acquisition unit is configured to detect incident light. The pattern of light emitted from the true anti-counterfeit medium at the same imaging angle as the captured image obtained by capturing the light pattern emitted from the anti-counterfeit medium is obtained as a correct image (correct image acquisition process), and the image control unit Image data in which the captured image and the correct image are arranged is generated and output (image control process).

The authenticity determination support program according to the third aspect of the present invention is the light emitted from the true anti-counterfeit medium at the same imaging angle as the captured image obtained by capturing the pattern of the light emitted from the anti-counterfeit medium with respect to the incident light. Is obtained as a correct image (correct image acquisition means), and image data in which the captured image and the correct image are arranged is generated and output (image control means), and an anti-counterfeit medium provided in the authenticity determination object The computer is operated so as to execute an authenticity determination support method for supporting authenticity determination.

The computer-readable medium including the authenticity determination support program according to the fourth aspect of the present invention provides true anti-counterfeiting at an imaging angle similar to a captured image in which a pattern of light emitted from the anti-counterfeit medium is captured with respect to incident light. A pattern of light emitted from the medium is obtained as a correct image (correct image acquisition means), and image data in which the captured image and the correct image are arranged is generated and output (image control means), which is provided in the authenticity determination object. And causing the computer to execute an authentication determination support process for supporting authentication of the forgery prevention medium.

As described above, according to an aspect of the present invention, a pattern of light emitted from a forgery prevention medium imaged by an imaging device such as a digital camera is imaged as a captured image, and the captured image is captured at an imaging angle. The pattern of light emitted from the true anti-counterfeit medium is set as a correct image, and the captured image and the correct image are displayed side by side. As a result, it is not necessary to use a special authenticity determination device as in the prior art, and authenticity determination can be performed with a simple image pickup device such as a general-purpose digital camera (or a smartphone camera) for authenticating anti-counterfeit media. It is possible to provide a computer-readable medium including a support device, an authentication determination support method, an authentication determination support program, and an authentication determination support program.

It is a block diagram which shows the structural example of the authentication determination assistance apparatus which concerns on 1st Embodiment. 2 is a diagram illustrating a configuration example of each of an authentication determination support device 1, an imaging device 20, and a display device 30. FIG. It is a figure explaining the angle estimation structure provided in the forgery prevention medium. 6 is a diagram illustrating a correspondence relationship between an incident angle of light and an imaging angle in the forgery prevention medium 3. FIG. 6 is a diagram illustrating a correspondence relationship between an incident angle of light and an imaging angle in the forgery prevention medium 3. FIG. It is a figure which shows the structural example of the authentication determination classification table previously written and memorize | stored in the database. 5 is a flowchart showing an operation example of processing for determining the type of the forgery prevention medium 3 in the authenticity determination support device 1. 4 is a flowchart showing an operation example of authenticity determination support processing of the anti-counterfeit medium 3 in the authenticity determination support device 1. It is a figure which shows the outline | summary of the smart phone used as a substitute of each of the imaging device 20 and the display apparatus 30. FIG. It is a figure which shows the outline | summary of the smart phone used as a substitute of each of the imaging device 20 and the display apparatus 30. FIG. It is a figure which shows the example of a display of the comparison image in the display screen 51 of the portable terminal. It is a figure which shows the example of a display of the comparison image in the display screen 51 of the portable terminal. It is a top view which shows roughly the forgery prevention medium which concerns on 2nd Embodiment. FIG. 11 is a cross-sectional view schematically showing a cross section taken along the line ZZ of the forgery prevention medium shown in FIG. 10. It is a perspective view which shows the example of the 2nd uneven structure part of the forgery prevention medium which concerns on 2nd Embodiment. It is a figure which shows roughly a mode that a 2nd uneven structure part inject | emits a diffracted light. It is a perspective view which shows the example of the 1st uneven structure part of the forgery prevention medium which concerns on 2nd Embodiment.

<First Embodiment>
Hereinafter, an authenticity determination support apparatus according to a first embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram illustrating a configuration example of the authenticity determination support device according to the first embodiment. In FIG. 1, an authenticity determination support apparatus 1 supports an authenticity determination of an authenticity determination target object 2 described later by an observer 1000. The authenticity determination target object 2 is an object for performing authenticity determination as to whether the object is genuine or a genuine article.
An anti-counterfeit medium 3 used for authenticity determination of the authenticity determination object 2 is provided on the surface 2A of the authentication object 2. In the present embodiment, the anti-counterfeit medium 3 is, for example, an optically variable device such as a diffraction grating or a hologram whose color or pattern changes depending on the observation angle, or security ink whose color or brightness changes.

In addition, on the surface 2S of the authenticity determination target object 2, a target object determination medium 4 for determining the type of product of the authenticity determination target object 2 and the type (type) of the forgery prevention medium 3 is provided. This object discriminating medium 4 includes a code based on character data such as numbers, a code (a code associated with a shape in advance) indicated by its own shape (planar or three-dimensional shape), a barcode, a two-dimensional barcode, and the like. A machine-readable code is provided on the surface 2S of the authenticity determination target object 2 by a structure having a three-dimensional shape in the same manner as the printing or forgery prevention medium 3. Further, the shape (planar or three-dimensional shape) of the anti-counterfeit medium 3 may be used as a code. The above-described code is used as a determination code for determining the type of the forgery prevention medium 3. In addition, when an IC (integrated circuit) chip or the like is provided on the authentication object 2 (passport, credit card, driver's license, etc.), a discrimination code is written on the IC chip, and the forgery prevention medium 3 When the type is determined, it may be read by a reader and used.

The imaging device 20 captures an image of the authenticity determination target object 2 including the light pattern output from the forgery prevention medium 3 and outputs the image to the authenticity determination support device 1.
Further, the authenticity determination support device 1 confirms the type of the anti-counterfeit medium 3 with the object discrimination medium 4, and corrects the light pattern output from the true (genuine) anti-counterfeit medium 3 (correct anti-counterfeit medium 3). May be indicated as a correct image). Then, the authenticity determination support device 1 and this correct light pattern image and the light pattern image of the light pattern output by the imaged anti-counterfeit medium 3 (sometimes referred to as a captured image including the image of the anti-counterfeit medium 3). Outputs a parallel presentation image in which and are arranged.

The display device 30 displays the parallel presentation image output from the authenticity determination support device 1 as an image on its own display screen.
The observer 1000 observes and compares the reference light pattern image and the light pattern image in the parallel presented image displayed on the display screen of the display device 30, and the forgery prevention medium 3 added to the authenticity determination target object 2 It is determined whether or not it is true.

FIG. 2 is a diagram illustrating a configuration example of each of the authentication determination support device 1, the imaging device 20, and the display device 30. The authenticity determination support apparatus 1 includes an input / output unit 101, an observation angle estimation unit 102, a type identification unit 103, a correct image acquisition unit 104, an image control unit 105, and a database 106.
The input / output unit 101 transmits and receives image data of a captured image from the imaging device 20 and data such as a control signal to the imaging device 20.
The observation angle estimation unit 102 estimates the imaging angle at which the imaging device 20 captured the image data from the image data.

The type specifying unit 103 analyzes the image of the object discrimination medium 4 in the image data and specifies the type of the forgery prevention medium 3 provided in the authenticity determination target object 2.
The correct image acquisition unit 104 acquires a correct light image pattern corresponding to the imaging angle estimated by the observation angle estimation unit 102 and the type of the forgery prevention medium 3 specified by the type specifying unit 103.
The image control unit 105 outputs a parallel presentation image in which the correct light pattern image and the light pattern image are arranged to the display device 30.
In the database 106, an authentication determination type table indicating the type of the forgery prevention medium 3 determined by the analysis of the object determination medium 4 is written and stored in advance.

FIG. 3 is a diagram illustrating an angle estimation structure provided in the forgery prevention medium 3. Although the observation angle estimation unit 102 can estimate the imaging angle obtained by imaging the captured image from the three-dimensional structure of the anti-counterfeit medium 3, in order to estimate the imaging angle and the imaging position more accurately, the present embodiment In FIG. 3, the angle estimation structure 31 is provided in the forgery prevention medium 3. For example, the vertex of the angle estimation structure 31 is provided in contact with each vertex of the anti-counterfeit medium 3 that is substantially square. Further, the angle formed by the anti-counterfeit medium 3 and the angle estimation structure 31 is provided to be 90 °. The angle estimation structure 31 has a substantially square shape whose outer shape is smaller than that of the forgery prevention medium 3. The estimation calculation of the imaging angle and the imaging position of the captured image is performed on the assumption that the camera calibration is performed on the imaging device 20 in advance. Camera calibration is performed by changing the position and angle at which a graphic pattern whose size and three-dimensional shape are known in advance is changed, and taking two or more times. The two-dimensional pixels of the graphic pattern in the captured image and the three-dimensional shape to be imaged This is a technique for calculating internal parameters such as the focal length and distortion of the camera and external parameters indicating the relative positional relationship between the imaging device and the graphic pattern by taking correspondence.

Also in the present embodiment, the internal parameters of the imaging device 20 are known, and the anti-counterfeit medium 3 includes an angle estimation structure 31 for performing angle estimation with a known three-dimensional shape in advance. Accordingly, the observation angle estimation unit 102 determines the relative angle between the imaging device 20 and the forgery prevention medium 3 from the two-dimensional pixel of the angle estimation structure 31 in the captured image captured by the imaging device 20 and the internal parameters of the imaging device 20. Calculate the distance. Camera calibration is the best known technique. Zhang et al. (Z. Zhang, '' A flexible new technique for camera calibration '', IEEE Trans. On Pattern Analysis and Machine Intelligence, Vol. 13p. The present invention can also be applied.

4A and 4B are diagrams for explaining the correspondence between the incident angle of light and the imaging angle in the forgery prevention medium 3. For example, FIGS. 4A and 4B show that when the anti-counterfeit medium 3 is composed of a diffraction grating such as a hologram, what color the anti-counterfeit medium 3 diffracts toward the imaging device 20 and outputs it as an optical pattern. Indicates what to do. It is determined by each of the incident angle θ _α and the imaging angle θ _β of light from the light source. In the case of the anti-counterfeit medium 3 provided with the intaglio latent image, the latent image is observed at a deep angle. Here, each of the incident angle θ _α and the imaging angle θ _β is an angle formed with the normal line H of the surface 2S of the authenticity determination target object 2 on which the anti-counterfeit medium 3 is provided.

Therefore, the correct light pattern image is an image showing a light pattern that should be originally observed when the anti-counterfeit medium 3 is imaged at the imaging angle and imaging position used for discrimination. A correct light pattern image is an image of a light pattern in which a change in color or design depending on the imaging angle is calculated from the imaging angle and reproduced. The generation of the correct light pattern image is performed by preparing in advance an algorithm corresponding to each type by modeling the light incident angle of each type of anti-counterfeit medium 3 and the reflection state with respect to the imaging angle of the anti-counterfeit medium 3. .

FIG. 4A captures an image of the light pattern emitted from the forgery prevention medium 3 using the flash 13 provided in the imaging device 20 as a light source. In this case, at the time of imaging, a flash 13, the incident angle theta _alpha, it emits light to the medium for preventing forgery 3. Then, the imaging device 20 is the lens 11 by the imaging angle theta _beta, imaging the light pattern emitted from the anti-counterfeit medium 3.
On the other hand, FIG. 4B captures an image of a light pattern emitted from the forgery prevention medium 3 using the external light source 14 as a light source. In this case, at the time of imaging, the external light source 14 emits light to the anti-counterfeit medium 3 at an incident angle θ _α . Then, the imaging device 20 is the lens 11 by the imaging angle theta _beta, imaging the light pattern emitted from the anti-counterfeit medium 3.

FIG. 5 is a diagram illustrating a configuration example of the authentication determination type table that is written and stored in the database 106 in advance. The authenticity determination type table stores determination support information of the anti-counterfeit medium 3 such as an anti-counterfeit medium type, an imaging direction, a light source use, structure data, a design, and a correct image generation algorithm corresponding to the determination code. Yes. The discrimination code is a code analyzed from the object discrimination medium 4 and is identification information for identifying the forgery prevention medium 3 for each type. The imaging direction indicates an imaging angle, and indicates an azimuth angle and an elevation angle in a three-dimensional coordinate system (a three-dimensional coordinate system when an external parameter is obtained) when imaging the forgery prevention medium 3. In the case of a hologram or the like in which the light pattern changes according to a plurality of imaging angles, a plurality of imaging directions exist for one discrimination code.

Light source used at the time of imaging of the medium for preventing forgery. 3 shows the angle of azimuth and elevation showing an incident angle theta _alpha if whether requiring a light source, it is necessary. For use of the light source, as data, the wavelength irradiated from the light source is written and set as required. The structure data indicates the width of the creation pattern. Design shows what kind of light pattern design. As the correct image generation algorithm, an algorithm for obtaining a correct image is shown by the imaging direction, use of light source, structure data, design, and the like.

That is, the correct image acquisition unit 104 uses the imaging angle estimated from the captured image obtained by capturing the forgery prevention medium 3 and the authenticity determination type table stored in the database 106 to output the correct light pattern image. Get the. At this time, the correct image acquisition unit 104 inputs the imaging direction, light source usage, structure data, design, and the like to the correct image generation algorithm. When the hologram and the intaglio latent image are used, the correct image acquisition unit 104 has the anti-counterfeit medium 3 using a correct image generation algorithm (calculation program) based on the imaging direction, light source use, structure data, design, and the like. The correct light pattern image is obtained by calculating what color and pattern of the light pattern the structure emits. On the other hand, when it is difficult to generate a correct image by calculation as in the case of an anti-counterfeit medium using ink, the correct image acquisition unit 104 converts the image data of the correct light pattern image prepared in advance into a correct image generation algorithm (correct image storage database). Based on the (address) and read out from the database 106.

Returning to FIG. 2, the imaging apparatus 20 includes an imaging unit 201, an imaging control unit 202, an exposure control unit 203, and an illumination unit 204.
The imaging unit 201 is, for example, a camera using an image sensor such as a CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor), and the authenticity determination support apparatus 1 uses an image obtained by imaging an object as captured image data. Output for.
The imaging control unit 202 captures captured image data, which is an image obtained by capturing a light pattern (light color (wavelength) or image such as a character or a picture) emitted from the forgery prevention medium with respect to incident light. When the image is picked up by the image pickup unit 201, the image pickup unit 201 controls image pickup conditions such as the depth of focus and the sensitivity of the image pickup device (ISO (International Organization for Standardization) sensitivity).

The exposure control unit 203 controls the imaging conditions of the imaging unit 201 such as the shutter speed, aperture value, presence / absence of illumination light, and intensity of illumination light as exposure imaging conditions. Also, the exposure control unit 203 corresponds to the brightness around the forgery prevention medium imaged by the imaging device 20, and causes the illumination unit 204 to emit imaging light (illumination light) as necessary during imaging. A light emission instruction is output.

The illumination unit 204 is not only illumination that continuously irradiates light on a normal imaging target, but also a light emitting device called a flash or strobe (registered trademark) that irradiates light on the imaging target in a short time. Good. The illumination unit 204 responds to the light emission instruction from the exposure control unit 203 and irradiates the object to be imaged with light having a predetermined intensity. Here, the imaging control unit 202 supplies a control signal indicating imaging timing to the exposure control unit 203. Thereby, the exposure control unit 203 corresponds to the control signal indicating the imaging timing supplied from the imaging control unit 202, and emits illumination light to irradiate the anti-counterfeit medium to the illumination unit 204 as described above. Output instructions.

The display device 30 includes a display control unit 301 and a display unit 32. The display control unit 301 displays the parallel presentation image output from the authentication determination support device 1 on the display screen of the display unit 302.
The display unit 302 is, for example, a liquid crystal panel.

<Determination process of anti-counterfeit medium 3>
FIG. 6 is a flowchart showing an operation example of processing for determining the type of the forgery prevention medium 3 in the authenticity determination support device 1. The authenticity determination support device 1 starts processing for determining the type of the forgery prevention medium 3 when the application is started.
Step S101:
The type specifying unit 103 outputs an image prompting the user to image the object discrimination medium 4 to the display device 30 via the image control unit 105.
As a result, the display control unit 301 displays an image prompting the user to image the object discrimination medium 4 on the display screen of the display unit 302.
Then, the observer uses the imaging device 20 to image the object discrimination medium 4 provided on the surface 2S of the authenticity determination object 2.

Step S102:
The imaging device 20 outputs image data of a discrimination medium image that is an image of the captured object discrimination medium 4 to the authentication determination support device 1.
The input / output unit 101 receives the image data of the discrimination medium image and outputs it to the type specifying unit 103.

Step S103:
When the image data of the discrimination medium image is supplied, the type specifying unit 103 analyzes the image data of the discrimination medium image such as a barcode or a two-dimensional barcode from the image data of the discrimination medium image, and the analysis result is obtained. The discrimination code is extracted based on the original.

Step S104:
The type specifying unit 103 searches the extracted determination code in the authentication determination type table of the database 106.
As a result, the type identification unit 103 determines the presence / absence of the discrimination code extracted in the authenticity determination type table.
At this time, if the extracted determination code is in the authenticity determination type table, the type specifying unit 103 advances the process to step S105. On the other hand, if the extracted identification code is not in the authenticity determination type table, the type identification unit 103 advances the process to step S106.

Step S105:
The type identification unit 103 reads the imaging support information of the forgery prevention medium 3 described in correspondence with the determination code and outputs it to the image control unit 105. Here, the type specifying unit 103 extracts information necessary for the observer to image the anti-counterfeit medium 3 (for example, anti-counterfeit medium type, imaging direction, shooting position, light source use, etc.) from the determination support information. This is imaging support information.
When the determination support information is supplied from the type specifying unit 103, the image control unit 105 converts the imaging support information into image data and transmits the image data to the display device 30.
The display control unit 301 displays the determination support information supplied from the authenticity determination support device 1 on the display screen of the display unit 302 and prompts the observer to capture the forgery prevention medium 3.
Further, the type identification unit 103 outputs the extracted discrimination code to the correct image acquisition unit 104.

Step S106:
The type identification unit 103 outputs to the image control unit 105 error information indicating that the identification code extracted in the authenticity determination type table does not exist and support for authenticity determination of the forgery prevention medium 3 cannot be performed.
When the error information is supplied from the type specifying unit 103, the image control unit 105 converts the error information into image data and transmits the image data to the display device 30.
Then, the display control unit 301 displays the error information supplied from the authenticity determination support device 1 as an error display on the display screen of the display unit 302, and can support the authenticity determination of the anti-counterfeit medium 3 to the observer. Indicates no.

<Authenticity determination support process of anti-counterfeit medium 3>
FIG. 7 is a flowchart showing an operation example of the authentication support process of the forgery prevention medium 3 in the authentication determination support apparatus 1.

Step S201:
The correct image acquisition unit 104 reads determination support information corresponding to the determination code supplied from the type specifying unit 103 from the authentication determination type table of the database 106.

Step S202:
The correct image acquisition unit 104 is arranged on the surface 2S of the authenticity determination target object 2 of the forgery prevention medium 3 included in the determination support information with respect to the display device 30 via the image control unit 105, and Design information indicating the shape of the forgery prevention medium 3 is output to the display device 30 via the image control unit 105.
As a result, the display control unit 301 displays the position of the anti-counterfeit medium 3 on the surface 2S of the anti-counterfeit medium 2 on the display screen of the display unit 302 and the shape of the anti-counterfeit medium 3. Is displayed.

Step S203:
The correct image acquisition unit 104 corresponds to the optical characteristics (optical characteristics for acquiring a light pattern) of the anti-counterfeit medium 3 to be imaged, and the shooting direction (imaging direction) of the prevention medium type, azimuth angle, and elevation angle, Imaging support information such as a shooting position and light source use is output to the display device 30 via the image control unit 105.
Thereby, the display control unit 301 displays an image indicating the prevention medium type of the forgery prevention medium 3, the azimuth angle, the shooting direction of the elevation angle (imaging direction), the shooting position, the use of the light source, and the like on the display screen of the display unit 302. indicate.

At this time, the correct image acquisition unit 104 uses the images shown in FIG. 4A and FIG. 4B as a reference for the anti-counterfeit medium 3 in the authenticity determination target object 2 and the imaging direction (imaging angle) of the azimuth angle and elevation angle with respect to the imaging device 20. ), An image for explaining the photographing position (coordinate position in the three-dimensional coordinate system) and the use of the light source in the three-dimensional coordinate system is displayed on the display device 30, and the imaging of the light pattern emitted from the authenticity determination target 2 is promoted. You may do it. Through such processing, the authenticity determination support device 1 sets the imaging condition corresponding to the light pattern emitted from the forgery prevention medium 3 corresponding to each type of the forgery prevention medium 3 provided in each of the authenticity determination objects 2. Present to the observer.

Step S204:
Then, according to the image prompting the user to capture the forgery prevention medium 3 displayed on the display unit 302 of the imaging device 20, the observer uses imaging conditions such as an azimuth angle, an elevation imaging direction (imaging direction), an imaging position, and a light source usage. Correspondingly, a captured image including the anti-counterfeit medium 3 and the light pattern emitted from the anti-counterfeit medium 3 is captured. Here, the picked-up image does not need to be strictly performed in accordance with the image pickup conditions, and it is only necessary to pick up a light pattern such as a unique latent image or reflected light for each of the anti-counterfeit medium 3 to the extent that authentication can be performed. .
The imaging device 20 supplies a captured image including the anti-counterfeit medium 3 and the light pattern emitted from the anti-counterfeit medium 3 as image data to the authenticity determination support device 1.

Step S205:
The correct image acquisition unit 104 outputs the image data of the captured image to the observation angle estimation unit 102, and determines each of the imaging angle and the imaging position with respect to the forgery prevention medium 3.
The observation angle estimation unit 102 captures an imaging angle with respect to the forgery prevention medium 3 based on internal parameters such as a focal length and distortion aberration of the imaging device 20 (camera) and external parameters indicating a relative positional relationship between the imaging device and the graphic pattern. Each of the imaging positions is obtained.

Step S206:
The observation angle estimation unit 102 can obtain each of the imaging angle and the imaging position, and corresponds to the characteristic of the forgery prevention medium 3 in the captured image, but whether or not the image is captured at the imaging angle and the imaging position (that is, It is determined whether or not a correct image can be generated.
At this time, if the observation angle estimation unit 102 corresponds to the characteristics of the forgery prevention medium 3 and is photographed at the imaging angle and the imaging position, the process proceeds to step S207.
On the other hand, if the observation angle estimation unit 102 corresponds to the characteristics of the forgery prevention medium 3 but is not photographed at the imaging angle or imaging position, the process proceeds to step S209.

Step S207:
The correct image acquisition unit 104 acquires the correct image when the captured image of the forgery prevention medium 3 is captured at an imaging angle and an imaging position where a correct image can be generated.
When the forgery prevention medium 3 is a hologram or a latent image, the correct image acquisition unit 104 refers to the authenticity determination type table of the database 106 by using a determination code, and generates structure data appropriate for generating a correct image to be compared with the captured image. Read design and correct image generation algorithm.
And the correct image acquisition part 104 produces | generates and acquires a correct image according to a correct image generation algorithm using an imaging angle, an imaging position, structure data, and a design. The correct image is image data including an anti-counterfeit medium 3 that is observed corresponding to an imaging angle and an imaging position and an optical pattern emitted from the anti-counterfeit medium 3.

On the other hand, when the anti-counterfeit medium 3 is optically variable ink, the correct image acquisition unit 104 refers to the authenticity determination type table of the database 106 based on the determination code, and stores a correct image storage database for reading out the correct image to be compared with the captured image. Read the address. That is, in the case of optically variable ink, since it is difficult to generate a correct image corresponding to an algorithm, a captured image that becomes a correct image is previously written and stored in the database 106 for each combination of imaging angle and imaging position. Let me. Then, the correct image acquisition unit 104 accesses the correct image storage database address in the database 106, reads out the correct image stored in the area for each combination of the imaging angle and the imaging position, and corresponds to the captured image. Get the correct image.

Step S208:
The correct image acquisition unit 104, together with the acquired correct image and the captured image supplied from the observation angle estimation unit 102, a control signal that instructs to create a comparison image in which these images are arranged in parallel on one screen, Output to the image control unit 105.
Then, the image control unit 105 creates a comparison image in which each of the correct image and the captured image supplied from the correct image acquisition unit 104 are arranged in parallel on the left and right, and outputs the comparison image to the display device 30.
Thereby, the display control unit 301 displays the image data of the comparison image in which the correct image and the captured image are displayed in parallel on the display screen of the display unit 302.

For example, as shown in FIG. 1, the captured image 3511 is displayed in the display area 351 and the correct image 3521 is displayed in the display area 352 on the display screen of the display device 30. As shown in FIG. 1, the captured image and the correct images corresponding to the imaging angle and the imaging position of the captured image are displayed in parallel. For this reason, the observer 1000 can easily check whether the light pattern in the captured image is the same as the light pattern of the correct image by comparing and referring to the correct image and the captured image on the display screen of the display device 30. Can be determined. In FIG. 1, the correct image and the captured image are arranged in parallel on the left and right on the display screen of the display device 30, but if the correct image and the captured image are arranged in parallel on the same display screen, And may be arranged vertically or diagonally. Further, when each of the light pattern of the correct image to be compared and the light pattern of the captured image is a line segment or the like, they may be overlapped and arranged in parallel in the vertical direction with respect to the display screen.

Step S209:
The observation angle estimation unit 102 cannot determine each of the imaging angle and the imaging position, or if the captured image is not captured at the imaging angle and the imaging position corresponding to the characteristics of the forgery prevention medium 3, Then, a display prompting the user to take an image again is performed on the display device 30 via the image control unit 105.
For example, the observation angle estimation unit 102 sets each of the imaging angle and the imaging position in the authentication determination type table of the database 106 and the imaging angle and the imaging position obtained by itself so that the appropriate imaging angle and imaging position are obtained. A difference from each is obtained, and this difference is displayed on the display screen of the display device 30 via the image control unit 105. For example, the obtained difference is displayed as an arrow image on the display screen of the display device 30, and how much the imaging angle of the imaging device 20 is changed by the observer or in which direction the imaging device 20 is translated. You may make it show.

As described above, the authenticity determination support device 1 of the present embodiment displays the captured image and the correct image corresponding to each of the imaging angle and imaging position of the captured image in parallel and displays them on the display device 30. For this reason, according to the authenticity determination support device 1 of the present embodiment, the viewer 1000 is supported on the display screen of the display device 30 by comparing the viewer 1000 with reference to each of the correct image and the captured image. Can easily determine whether or not the light pattern in the captured image is the same as the light pattern in the correct image.
Further, according to the authenticity determination support device 1, the object determination medium 4 for identifying the forgery prevention medium 3 is provided in the authenticity determination object 2, and the type of the forgery prevention medium 3 is determined by the object determination medium 4. By doing so, it is possible to support not only one type but also a plurality of anti-counterfeit media 3 for authenticating an observer.

In the embodiment described above, the imaging angle and the imaging position are estimated from the captured image captured by the imaging device 20 based on the predetermined imaging angle and imaging position displayed on the display screen of the display device 30. However, an imaging angle and an imaging position are estimated in real time from a captured image captured (read) by the imaging apparatus 20 in a predetermined time unit by using a through image or a moving image in the imaging apparatus 20. Further, when the imaging angle and the imaging position are changed, a change in the light pattern (change in the color and shape of the light pattern) occurs in the correct image, indicating where the light pattern emitted from the forgery prevention medium 3 changes. A configuration may be adopted in which a mark is added to the position and the image is displayed on the display device 30 so as to encourage the observer to pay attention to the determination.

At this time, the observation angle estimation unit 102 calculates the imaging angle and the imaging position of the imaging device 20 with respect to the forgery prevention medium 3 from the image data of the captured image supplied from the imaging device 20 every predetermined time. Then, the observation angle estimation unit 102 obtains a difference between each of the calculated imaging angle and imaging position and each of the imaging angle and imaging position previously described in the authentication determination type table of the database 106. In addition, the observation angle estimation unit 102 selects a correct image corresponding to the imaging angle and imaging position described in advance in the authentication determination type table with the smallest difference. The observation angle estimation unit 102 displays the difference as an amount to change the imaging angle and imaging position of the imaging device 20 on the display screen of the display device 30 together with a mark for a region where the light pattern in the captured image changes.

Further, in the present embodiment, the description has been given of the configuration in which the image data of the comparison image is displayed on the display screen of the display unit 302 in the display device 30, but the image data of the comparison image is output to the printing device, After making a printed matter (for example, a color-printed matter), the observer may perform authenticity determination.

In the above-described embodiment, the configuration in which the imaging device 20 and the display device 30 are provided separately has been described. However, a mobile terminal having the functions of the imaging device 20 and the display device 30, such as a smartphone or a mobile phone, may be used as a substitute for the imaging device 20 and the display device 30, respectively.
8A and 8B are diagrams illustrating an overview of a smartphone used as a substitute for each of the imaging device 20 and the display device 30. FIG. FIG. 8A shows a surface with a display screen 51 of the portable terminal 50. This display screen 51 corresponds to the display device 30 of FIG.

FIG. 8B shows the back surface of the portable terminal 50, and a light source 53 (flash) and an imaging unit 54 are provided. Here, the imaging unit 54 corresponds to the imaging unit 201 and the imaging control unit 202 of the imaging device 20 in FIG. 2 already described. The light source 53 corresponds to the exposure control unit 203 and the illumination unit 204.
The portable terminal 50 is connected to the authentication determination support apparatus 1 via a network by wired communication or wireless communication. The portable terminal 50 accesses the authentication determination support apparatus 1 via a network such as the Internet, and transmits image data of the captured image. Then, the portable terminal 50 is supplied with a comparison image made up of each image data of the captured image and the correct image from the authenticity determination support device 1, displays the image data of this comparison image on the display screen 51, and authenticates the viewer. Provide judgment support.

FIGS. 9A and 9B are diagrams illustrating an example of display of a comparative image on the display screen 51 of the portable terminal 50. FIG. 9A and 9B illustrate a display screen 51 in which each of a captured image and a correct image is arranged in parallel as a comparative image. In FIG. 9A, the captured image 501 including the light pattern image 501P is displayed in the display area 51A of the display screen 51, and the correct image 502 including the correct light pattern image 502P is displayed in the display area 51B. The captured image 501 includes image data 31A of the angle estimation structure 31. The photographer can easily determine that the light pattern image of the captured image 501 and the correct light pattern image 502P of the correct image 502 are equal to each other because they are arranged side by side. Accordingly, the observer determines that the forgery prevention medium 3 that emits the light pattern image of the captured image 501 is true (genuine).

On the other hand, in FIG. 9B, a captured image including the light pattern image 501P is displayed in the display area 51A of the display screen 51, and a correct image 502 including the correct light pattern image 502P is displayed in the display area 51B. The captured image 501 includes image data 31A of the angle estimation structure 31. The photographer can easily determine that the light pattern image of the captured image 501 and the correct light pattern image 502P of the correct image 502 are not equal because they are arranged side by side. Thereby, an observer determines with the forgery prevention medium 3 which radiate | emits the light pattern image of the captured image 501 being fake (fake).
9A and 9B described above is the description of the display screen 51 of the portable terminal 50, the same display is performed on the display screen of the display device 30 in FIG.

Note that a program for realizing the function of the authentication support device 1 of FIG. 1 in the present invention is recorded on a computer-readable recording medium (readable medium), and the program recorded on the recording medium is read into a computer system. It is also possible to perform authentication support processing for the observer's anti-counterfeit medium by executing this function. The “computer system” here includes an OS and hardware such as peripheral devices.
The “computer system” also includes a WWW system provided with a homepage providing environment (or display environment). The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM or a CD-ROM, and a hard disk incorporated in a computer system. Further, the “computer-readable recording medium” refers to a volatile memory (RAM) in a computer system that becomes a server or a client when a program is transmitted via a network such as the Internet or a communication line such as a telephone line. In addition, a recording medium holding a program for a certain period of time is also included.

The program may be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the “transmission medium” for transmitting the program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line. The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, and what is called a difference file (difference program) may be sufficient.

<Second Embodiment>
In the second embodiment, the same members as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted or simplified.
The second embodiment is different from the first embodiment in the structure of the forgery prevention medium.
The anti-counterfeit medium according to the embodiment of the present invention may be a hologram that emits various diffracted lights by a diffractive structure. In this case, various holograms such as a reflection type, a transmission type, a phase type, and a volume type can be used as the hologram. The anti-counterfeit medium according to the embodiment is provided on the surface 2A of the authenticity determination target object 2.

Below, it explains in full detail centering on the example of the relief type structure which has a concavo-convex structure especially.
As a method for forming the concavo-convex structure such as the first concavo-convex structure portion 410 and the second concavo-convex structure portion 420 formed in the relief structure forming layer 402 as shown in FIGS. 10 and 11, a metal stamper or the like is used. Various methods such as radiation curable molding, extrusion molding, and hot press molding can be used.
The first concavo-convex structure portion 410 has a groove-like structure including a concave portion or a convex portion, and is a so-called relief type diffraction grating structure, or a region in which a plurality of linear concave portions or convex portions with uniform directions are formed. And a concavo-convex structure such as a directional scattering structure composed of a combination of a plurality of regions having different directions from each other can be used.
In general, most of ordinary diffraction gratings used for display bodies have a spatial frequency of 500 to 1600 lines / mm, and different colors are given to users who observe from a certain direction depending on the spatial frequency or orientation of the diffraction grating. It is possible to display.
On the other hand, the directional scattering structure includes a plurality of light scattering structures 431 taking a fixed orientation direction 432 within a specific segment or cell as shown in FIG. Each of these light scattering structures 431 is linear, and is arranged substantially in parallel within a specific segment or cell.
However, each light scattering structure 431 does not need to be completely parallel, and as long as the area | region of the said directional scattering structure 430 has the scattering ability with sufficient anisotropy, some light scattering structures 431 are. And the longitudinal direction of the other part of the light scattering structure 431 may intersect.
By adopting the above structure, when light is irradiated from an oblique direction perpendicular to the alignment direction 432 and the region composed of the directional scattering structure 430 is observed from the front, it appears to be relatively bright due to high light scattering ability. It becomes.
On the other hand, when light is irradiated from an oblique direction perpendicular to the light scattering axis 433 and the region including the directional scattering structure 430 is observed from the front, it appears to be relatively dark due to the low light scattering ability.
Therefore, in a segment or cell including such a light scattering structure 431, a pattern by a combination of a relatively bright portion and a relatively dark portion is formed by arbitrarily providing an orientation direction 432 for each segment or cell, and observation is performed. By observing while changing the position to irradiate or the position to irradiate light, reversal of brightness and the like is observed.
The first concavo-convex structure portion 401 can be provided with a structure such as the relief type diffraction grating structure or a directional scattering structure alone or in combination, but is not necessarily limited thereto.
An example of a structure that can be employed in the second uneven structure portion 420 is shown as a perspective view in FIG.
The second concavo-convex structure portion 420 shown in FIG. 12 is provided with a plurality of convex portions 421.
Here, the second concavo-convex structure portion 420 is formed by only the plurality of convex portions 421, but this is only an example, and in the present embodiment, the second concavo-convex structure portion 420 is formed using a plurality of concave portions. Can be formed.
The surface area of the single concave portion or convex portion provided in the second concave-convex structure portion 420 in the present embodiment is 1 of the occupied area required for arranging the single concave portion or convex portion on the surface of the relief structure forming layer 402. It is preferably 5 times or more.
When the surface area of a single concave portion or convex portion is 1.5 times or more of the occupied area, good low reflectivity and low scattering properties can be obtained. That is, the color tone is clearly different from that of the first concavo-convex structure portion, and is easily recognized when the image is picked up by the image pickup portion (image pickup portions 201 and 54). On the other hand, if the surface area of a single concave or convex portion is smaller than 1.5 times the occupied area, the reflectivity increases, which is not preferable.
In addition, the shape used for the plurality of concave portions or convex portions in the second concavo-convex structure portion 420 formed in the relief structure forming layer 402 is preferably a forward tapered shape.
Here, the forward taper shape refers to a case where the cross-sectional area parallel to the substrate surface of the concave portion or convex portion is formed so as to decrease from the proximal end to the distal end of the concave portion or convex portion. Specifically, cones, pyramids, elliptical cones, cylinders or cylinders, prisms or cylinders, truncated cones, truncated pyramids, truncated elliptical cones, cylinders or cylinders with cones Examples include a joined shape, a shape in which a pyramid is joined to a prism or a square tube, a hemisphere, a semi-ellipsoid, a bullet shape, and a bowl shape.
As shown in FIG. 12, when the distance between the centers of adjacent concave portions or convex portions is constant in the second concave-convex structure portion 420, the second concave-convex structure portion 420 is irradiated with light as shown in FIG. Then, the second uneven structure portion 420 emits diffracted light in a specific direction with respect to the traveling direction of the incident light L.

In general, the diffracted light can be expressed by the following formula.
d (sin α ± sin β) = nλ (1)
In Expression (1), d represents the distance between the centers of the concave or convex portions, and λ represents the wavelengths of incident light and diffracted light. Further, α represents the incident angle of the incident light, β represents the exit angle of the diffracted light, n is the order, and the most typical diffracted light is the first order diffracted light, so n = 1. be able to.
Here, the incident angle α can be considered to be the same as the exit angle of the 0th-order diffracted light, that is, the specularly reflected light, and α and β are normal directions with respect to the display body, that is, clockwise from the Z axis in FIG. The direction is the positive direction. Therefore, Formula (1) is represented as follows.
d (sin α−sin β) = λ (2)
Therefore, when the distance d between the centers of the concave or convex portions and the incident angle, that is, the exit angle α of the 0th-order diffracted light are constant, the exit angle β of the first-order diffracted light 503 has a wavelength as apparent from the equation (2). It changes according to λ. Therefore, when the illumination light is white light, the color captured by the imaging unit changes when the observation angle of the concavo-convex structure portion is changed.

The second concavo-convex structure portion 420 has a forward taper shape in which the distance between the centers of the respective concave portions or convex portions is 400 nm or less, so that it is almost black in imaging from the normal direction. Under the environment where the incident angle α of white light is 60 ° to 90 °, the emission angle | β | of the first-order diffracted light 503 of light having a specific wavelength can be designed in the vicinity of the incident angle.
For example, when the incident angle α = 60 ° and d = 340 nm, the emission angle | β | with respect to λ = 600 nm is approximately 64 °.

On the other hand, since the first concavo-convex structure portion 410 has a so-called diffraction grating structure or the like, it is difficult to set the exit angle of the first-order diffracted light in the vicinity of the incident angle.

Therefore, in the identification work by the authenticity determination support device 1, the light source (external light source 14, light source 53) and the imaging unit are relatively close to each other, so that the second concavo-convex structure unit 420 under certain specific conditions is clear. It is possible to capture color changes.

Further, the anti-counterfeit medium 400 is configured to utilize a surface plasmon propagation generated by providing a nanometer-sized micropore or the like on the surface, or by controlling the depth of the concavo-convex structure. You may have the structure which utilizes the structural color which controls the color of the reflected light with respect to light, or transmitted light.
Further, the anti-counterfeit medium 400 is configured so as to utilize the recursive reflection characteristics due to, for example, a microsphere or a spherical structure, and forms a gradient in the surface structure of a minute region so as to have a reflection characteristic, thereby allowing incident light only in a specific direction. It may have a configuration such as an angle control mirror that reflects / transmits light, or a configuration such as a printed matter having an uneven shape provided by intaglio printing.

Furthermore, the anti-counterfeit medium 400 is configured to use a structure that restricts the viewing zone by arranging a large number of wall surfaces having a height used in, for example, a peeping prevention film in a narrow area. A configuration that utilizes a parallax barrier system in which an image formed in the back of the surface changes by limiting the viewing zone by thin lines provided at specific intervals above, or a lenticular lens or microlens array For example, it may be configured to take advantage of the fact that the image formed behind the lens appears to change.
The anti-counterfeit medium 400 may have a configuration in which, for example, a pearl pigment in which mica is coated with a metal oxide is provided by printing or the like.

The anti-counterfeit medium 400 uses, for example, a multilayer thin film whose color changes depending on the reflection angle and transmission angle of incident light due to interference phenomenon by providing a plurality of thin films of transparent materials or metals having different refractive indexes, A structure in which a multilayer thin film is crushed into flakes and provided as a pigment by printing, a structure in which fine particles are coated with a thin film by chemical treatment, etc., and particles that cause interference phenomenon are provided by printing, etc. You may have the structure which fixes and utilizes the liquid crystal material as represented by a polymer etc. As the liquid crystal material, a liquid crystal material provided in a planar shape may be used, or a liquid crystal material provided by printing after being crushed and pigmented may be used.

In addition, the anti-counterfeit medium 400 has a directivity for reflected light and transmitted light by, for example, aligning a magnetic material represented by iron oxide, chromium oxide, cobalt, and ferrite by a magnetic force and providing a planar shape. A configuration using a magnetic alignment material, a configuration in which a multilayer film is provided by adding chemical treatment or the like as described above with the magnetic alignment material as a core, and a nanometer-size typified by silver nanoparticles or quantum dots You may have a structure which utilizes the optical effect produced by particle | grains.

In the present embodiment, similarly to the above-described first embodiment, the determination process of the forgery prevention medium 400 and the authenticity determination support process are performed based on the flowcharts shown in FIGS.
The correct image acquisition unit 104 acquires the correct light pattern image using the imaging angle estimated from the captured image obtained by imaging the forgery prevention medium 400 and the authentication determination type table stored in the database 106. I do. At this time, the correct image acquisition unit 104 inputs the imaging direction, light source usage, structure data, design, and the like to the correct image generation algorithm. In the case of the anti-counterfeit medium 400 having the relief structure described above, the correct image acquisition unit 104 uses a correct image generation algorithm (calculation program) to prevent forgery based on the imaging direction, light source use, structure data, design, and the like. The correct light pattern image is acquired by calculating what color and pattern of the light pattern the structure of the medium 400 emits.

As described above, in the authenticity determination support device 1 of the present embodiment, even if the anti-counterfeit medium 400 having the relief structure is provided on the surface of the authenticity determination target object 2, The same effect as in the embodiment can be obtained. Further, according to the authenticity determination support device 1, the object determination medium 4 for identifying the forgery prevention medium 400 is provided in the authenticity determination object 2, and the type of the forgery prevention medium 400 is determined by the object determination medium 4. By doing so, it is possible to support not only one type but also a plurality of anti-counterfeit media 400 for authenticity determination of the observer.

While preferred embodiments of the present invention have been described and described above, it should be understood that these are exemplary of the invention and should not be considered as limiting. Additions, omissions, substitutions, and other changes can be made without departing from the scope of the invention. Accordingly, the invention is not to be seen as limited by the foregoing description, but is limited by the scope of the claims.

DESCRIPTION OF SYMBOLS 1 ... Authenticity determination assistance apparatus 2 ... Authentic determination object 3, 400 ... Anti-counterfeit medium 4 ... Object discrimination medium 20 ... Imaging apparatus 30 ... Display apparatus 31 ... Angle estimation structure 50 ... Portable terminal 51 ... Display screen 51A, 51B, 351, 352 ... display area 53 ... light source 54 ... imaging unit 101 ... input / output unit 102 ... observation angle estimation unit 103 ... type specifying unit 104 ... correct image acquisition unit 105 ... image control unit 106 ... database 201 ... imaging unit 202 ... imaging Control unit 203 ... Exposure control unit 204 ... Illumination unit 301 ... Display control unit 302 ... Display unit 402 ... Relief structure forming layer 410 ... First uneven structure part 420 ... Second uneven structure part 431 ... Light scattering structure 430 ... Direction Scattering structure 401... First concavo-convex structure portion 421. Convex portion 503.

Claims (9)

1. An authenticity determination support device for supporting authenticity determination of an anti-counterfeit medium provided in an authenticity determination object,
   A correct image acquisition unit for obtaining, as a correct image, a pattern of light emitted from a true anti-counterfeit medium at an imaging angle similar to that of a captured image in which a pattern of light emitted from the anti-counterfeit medium is captured with respect to incident light;
   An authenticity determination support apparatus comprising: an image control unit that generates and outputs image data in which the captured image and the correct image are arranged.
2. Analyzing a determination medium image obtained by capturing an object determination medium provided on the authenticity determination target object, which indicates a type of the forgery prevention medium, and extracting a determination code from the determination medium image, and The authenticity determination support device according to claim 1, further comprising: a type specifying unit that specifies a type.
3. The correct image acquisition unit
   The authenticity determination support device according to claim 2, wherein the correct image corresponding to the type specified by the type specifying unit is obtained.
4. The authenticity determination support device according to any one of claims 1 to 3, further comprising an angle estimation unit that estimates an imaging angle of the captured image from an image of the forgery prevention medium in the captured image.
5. The correct image acquisition unit
   The authenticity determination support apparatus according to claim 4, wherein the correct image is acquired at an angle corresponding to the imaging angle estimated by the angle estimation unit.
6. A database storing the correct image corresponding to the type of the anti-counterfeit medium specified by the type specifying unit and the imaging angle;
   The correct image acquisition unit
   The authenticity determination support apparatus according to claim 5, wherein the correct image corresponding to the type and the imaging angle is read from the database to acquire the correct image.
7. An authenticity determination support method for supporting authenticity determination of an anti-counterfeit medium provided for an authenticity determination object,
   The correct image acquisition unit obtains the light pattern emitted from the true anti-counterfeit medium as a correct image at the same imaging angle as the captured image in which the pattern of light emitted from the anti-counterfeit medium is captured with respect to the incident light,
   An authenticity determination support method for generating and outputting image data in which the captured image and the correct image are arranged by an image control unit.
8. Obtain the light pattern emitted by the true anti-counterfeit medium as a correct image at the same imaging angle as the captured image obtained by capturing the light pattern emitted by the anti-counterfeit medium with respect to the incident light,
   Generate and output image data in which the captured image and the correct image are arranged,
   An authentication determination support program for operating a computer to execute an authentication determination support method for supporting authentication of an anti-counterfeit medium provided in an authentication object.
9. Obtain the light pattern emitted by the true anti-counterfeit medium as a correct image at the same imaging angle as the captured image obtained by capturing the light pattern emitted by the anti-counterfeit medium with respect to the incident light,
   Generate and output image data in which the captured image and the correct image are arranged,
   A computer-readable medium including an authentication determination support program for causing a computer to execute an authentication determination support process for supporting authentication of an anti-counterfeit medium provided in an authentication object.

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