WO2015145779A1 - Dispositif de traitement d'image, procédé de traitement d'image et programme - Google Patents

Dispositif de traitement d'image, procédé de traitement d'image et programme Download PDF

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Publication number
WO2015145779A1
WO2015145779A1 PCT/JP2014/059370 JP2014059370W WO2015145779A1 WO 2015145779 A1 WO2015145779 A1 WO 2015145779A1 JP 2014059370 W JP2014059370 W JP 2014059370W WO 2015145779 A1 WO2015145779 A1 WO 2015145779A1
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WO
WIPO (PCT)
Prior art keywords
image
frame rate
image processing
logo
processing apparatus
Prior art date
Application number
PCT/JP2014/059370
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English (en)
Japanese (ja)
Inventor
博 豊泉
東　陽一
Original Assignee
Ａ・Ｔコミュニケーションズ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by Ａ・Ｔコミュニケーションズ株式会社 filed Critical Ａ・Ｔコミュニケーションズ株式会社
Priority to PCT/JP2014/059370 priority Critical patent/WO2015145779A1/fr
Priority to JP2014540242A priority patent/JP5636523B1/ja
Publication of WO2015145779A1 publication Critical patent/WO2015145779A1/fr

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    • 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
    • G06K19/06009—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 with optically detectable marking
    • G06K19/06037—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 with optically detectable marking multi-dimensional coding
    • 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
    • G06K19/06009—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 with optically detectable marking
    • G06K19/06046—Constructional details
    • G06K19/06103—Constructional details the marking being embedded in a human recognizable image, e.g. a company logo with an embedded two-dimensional code

Definitions

  • the present invention relates to an image processing apparatus, an image processing method, and a program, and more particularly to an image processing apparatus, an image processing method, and a program that can prevent image capture.
  • QR Quick Response code
  • registered trademark which is a type of two-dimensional code, embeds machine-readable information in printed materials.
  • QR codes with monetary value, as represented by airline tickets, are used.
  • the use of (registered trademark) is expanding (see, for example, Patent Document 1).
  • the specification of patent document 1, a claim, and the whole drawing shall be taken in for reference in this specification.
  • QR codes registered trademark
  • the present invention has been made to solve the above-described problems, and an object of the present invention is to provide an image processing apparatus, an image processing method, and a program capable of preventing image capture.
  • the image processing apparatus is characterized in that a part or all of an image is displayed in a manner that is difficult to recognize with the naked eye.
  • a part or all of the image may be displayed at a second frame rate different from the first frame rate for capturing a moving image.
  • an image processing apparatus is an image processing apparatus that authenticates an image that changes partly or entirely in a manner that is difficult to recognize with the naked eye.
  • An image discriminating unit that discriminates whether or not all or part of the image has changed; and when the image discriminating unit determines that part or all of the image has not changed, the image discriminating unit determines that the image has been captured. And a capture discriminating means.
  • a part or all of the image changes at a second frame rate different from the first frame rate for capturing a moving image
  • the image determining means includes a part or all of the image. It is determined whether or not the second frame rate has changed, and the capture determination unit determines that a part or all of the image has not changed at the second frame rate by the image determination unit, If it is determined that the image has been captured while the image determining means determines that part or all of the image is changing at the second frame rate, the image is not captured. You may make it discriminate
  • a numerical value indicating a part or all of the color of the image changes on a predetermined trajectory in a color space
  • the image determination unit determines a part or all of the colors of the image. It is determined whether or not a part or all of the image is changing at the second frame rate by determining whether or not the numerical value shown is changing on the predetermined trajectory. May be.
  • the image determining means when the numerical value indicating a part or all of the color of the image does not pass through at least a part of the end points on the predetermined trajectory, When it is determined that part or all of the image has not changed at the second frame rate and all the end points on the predetermined trajectory have passed, the part or all of the image is part of the second frame. It may be determined that the rate is changing.
  • the second frame rate may be higher than the first frame rate.
  • the second frame rate may be relatively prime to the first frame rate.
  • an image processing method is characterized in that a part or all of an image is displayed in a manner that is difficult to recognize with the naked eye.
  • an image processing method for authenticating an image that changes in a part or all of which is difficult to recognize with the naked eye.
  • An image discrimination step for discriminating whether or not all or part has changed, If it is determined that part or all of the image has not changed in the image determination step, a capture determination step for determining that the image has been captured;
  • An image processing method comprising:
  • a program according to the fifth aspect of the present invention causes a computer to execute a procedure for changing and displaying a part or all of an image in a manner that is difficult to recognize with the naked eye.
  • a program according to the sixth aspect of the present invention changes a part or all of the image to a computer that authenticates an image that changes partly or entirely in a manner that is difficult to recognize with the naked eye.
  • an image processing apparatus it is possible to provide an image processing apparatus, an image processing method, and a program that can prevent image capture.
  • FIG. 1 It is a block diagram which shows the structural example of an image processing apparatus.
  • A is a top view which shows an example of a two-dimensional code
  • b is a top view which shows an example of the two-dimensional code with a logo. It is a figure for demonstrating the transition of the L value in a Lab color space, a value, and b value. It is a flowchart which shows an example of an image authentication process.
  • the image processing device 1 is configured by a general-purpose terminal device such as a smartphone, a tablet, or a personal computer, for example, and as illustrated in FIG. 1, a communication unit 11, a storage unit 12, a display unit 13, and an operation unit 14.
  • the control unit 15 is provided.
  • the communication unit 11 is composed of, for example, a NIC (Network Interface Card) or the like, and receives a two-dimensional code 2 with a logo transmitted from an external computer via a network such as the Internet.
  • NIC Network Interface Card
  • Fig. 2 (a) is a plan view showing an example of a two-dimensional code
  • Fig. 2 (b) is a plan view showing an example of a two-dimensional code with a logo.
  • the logo-added two-dimensional code 2 shown in FIG. 2B includes a two-dimensional code 21 such as the QR (Quick Response) code (registered trademark) shown in FIG. And are superimposed.
  • QR Quality Response
  • the two-dimensional code 21 includes three positioning symbols 22a, 22b, and 22c obtained by combining squares having a specific ratio, and for example, 29 29b is located between the positioning symbols 22a, 22b, and 22c.
  • ⁇ 29 square cells are arranged in a matrix.
  • various types of information are expressed by a distribution pattern of cells having a predetermined lightness (black in this example) and cells having a predetermined lightness (white in this example) among a plurality of cells.
  • the two-dimensional code with logo 2 shown in FIG. 2B is less than the predetermined lightness in an area of the predetermined lightness or higher in the logo image expressing the character 24 with “3 points” on the background image 23 so as to be visible.
  • a circular cell black cell in this example
  • a circular cell white cell in this example
  • the two-dimensional code with logo 2 shown in FIG. 2B is less than the predetermined lightness in an area of the predetermined lightness or higher in the logo image expressing the character 24 with “3 points” on the background image 23 so as to be visible.
  • a circular cell black cell in this example
  • a circular cell white cell in this example having a predetermined brightness or higher is superimposed on an area of the logo image that is less than the predetermined brightness.
  • a logo is added depending on a distribution pattern of an area of a logo image that is less than a predetermined brightness and a cell that is less than a predetermined brightness, and an area of a logo image that is a predetermined brightness or more and a cell that is a predetermined brightness or more.
  • Various information such as a URL (Uniform Resource Locator) assigned to each two-dimensional code 2 is expressed.
  • the shape of the cell in the logo-added two-dimensional code 2 is arbitrary, and may be a circle, a polygon, a star, or the like as in the present embodiment.
  • part or all of the colors of the logo-added two-dimensional code 2 are regularly changed in a manner that is difficult to recognize with the naked eye.
  • a part of the background image 23 of the logo-added two-dimensional code 2 (the part surrounded by the broken line shown in FIG. 2B)
  • the coordinates of the point P composed of the L value indicating the brightness and the a value and the b value indicating the hue change on a predetermined trajectory at a frame rate of 60 fps (frames per second), for example.
  • changes in a form that is difficult to recognize with the naked eye are subtle changes in hue and brightness, instantaneous changes in hue and brightness, and gradual changes in hue and brightness that cannot be distinguished with the naked eye. To tell.
  • the point P changes its traveling direction and performs a constant-velocity linear motion on the ab plane from the end point E1 (Lc, a1, b1) to the end point E2 (Lc, a2, b2) at the speed s1, and the end point E0 (
  • the point P further changes its traveling direction, and performs a constant-velocity linear motion on the ab plane from the end point E2 (Lc, a1, b1) to the end point E2 (Lc, a2, b2) at the speed s1.
  • the two-dimensional code 2 with a logo while the L value indicating the brightness of a part of the background image 23 (the portion surrounded by the broken line shown in FIG. 2B) does not change, the a value indicating the hue and The b value changes regularly with a 1 second period.
  • the logo-added two-dimensional code 2 is actually a moving image of 60 fps, but is recognized as a still image by the naked eye.
  • the storage unit 12 stores the logo-added two-dimensional code 2 expressed in the RGB color space or the CMYK color space received by the communication unit 11.
  • the display unit 13 is composed of, for example, an LCD (Liquid Crystal Display) or the like, and is partly or entirely based on image data stored in the storage unit 12 (in the present embodiment, a broken line shown in FIG. 2B).
  • a logo-added two-dimensional code 2 in which a part of the enclosed background image 23) changes regularly in a manner that is difficult to recognize with the naked eye is displayed on the screen.
  • the two-dimensional code with logo 2 is genuine (not captured)
  • a part of the background image 23 regularly changes at a frame rate of 60 fps.
  • a screen shot (still image) of the two-dimensional code 2 with a logo a part of the background image 23 does not change.
  • a part of the background image 23 regularly changes at a frame rate of 30 fps.
  • the display unit 13 displays the authentication result of the logo-added two-dimensional code 2 by the image authentication program on the screen.
  • the operation unit 14 includes, for example, a touch panel, a keyboard, a mouse, and the like, and is operated by a user to input various instructions.
  • the user operates the operation unit 14 to instruct to capture the two-dimensional code 2 with logo displayed on the display unit 13 or to instruct the authentication of the two-dimensional code 2 with logo by the image authentication program. Can do.
  • the control unit 15 includes, for example, a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like.
  • the CPU uses the RAM as a work memory and is stored in the ROM or the storage unit 12.
  • Various operations of the image processing apparatus 1 are controlled by appropriately executing the programs.
  • control unit 15 captures the logo-added two-dimensional code 2 displayed on the display unit 13 in response to an instruction to capture the logo-added two-dimensional code 2 from the operation unit 14. Then, a screen shot (still image) and screen capture (moving image with a frame rate of 30 fps) of the two-dimensional code 2 with logo are generated and stored in the storage unit 12.
  • the a value and b value indicating the hue of a part of the background image 23 of the logo-added two-dimensional code 2 are the a values at the captured timing. And the b value are fixed, and the coordinates of the point P do not change like the two-dimensional code 2 with a logo.
  • the screen capture is normally performed at a frame rate (30 fps) lower than 60 fps, for example, all of the end point E0, the end point E1, and the end point E2 on the trajectory of the point P are not captured.
  • a still image constituting the screen capture includes a still image in which the point P coincides with the end point E0
  • 20/60 10
  • Two-dimensional code 2 with logo is not captured at the timing after 2 seconds.
  • the still image constituting the screen capture includes a still image in which the point P matches the end point E1 and the end point E2, the still point in which the point P matches the end point E0. Images are never included.
  • control unit 15 executes the image authentication program stored in the storage unit 12 so that the two-dimensional code 2 with the logo represented in the RGB color space or the CMYK color space is represented in the Lab color space. Convert to 2D code 2 with logo.
  • the control unit 15 determines whether the two-dimensional code 2 with a logo represented in the Lab color space is genuine, a screen shot (still image) or a screen capture (a moving image with a frame rate of 30 fps). ).
  • the screen shot (still image) and screen capture (moving image with a frame rate of 30 fps) of the two-dimensional code 2 with logo may be generated by the control unit 15 or generated by an external computer. What is generated by an external computer may be received by the communication unit 11 and input to the image processing apparatus 1.
  • the L value indicating the brightness of a part of the background image 23 of the logo-added two-dimensional code 2 (the portion surrounded by the broken line shown in FIG. 2B), and the a value and b value indicating the hue. It is determined whether the coordinates of the point P are changed, especially whether the a and b values indicating the hue are changed, and if the coordinates of the point P are not changed, it is not genuine and has a logo
  • the screen shot (still image) of the two-dimensional code 2 is determined.
  • the control unit 15 determines whether or not the point P in the moving image is changing on the trajectory shown in FIG. Then, it is determined whether or not the point P in the moving image is changing at a frame rate of 60 fps. More specifically, by determining whether or not the point P in the moving image passes through all of the end points E0, E1 and E2 on the trajectory shown in FIG. 3, the point P in the moving image is 60 fps. It is determined whether or not the frame rate changes.
  • the control unit 15 includes, among a plurality of types of still images constituting the moving image, a still image in which the point P matches the end point E0, a still image in which the end point E1 matches, and a still image in which the end point E2 matches. It is determined whether or not all of the above are included.
  • the still image in which the point P matches the end point E0 the still image in which the point P1 matches the end point E1
  • the still image in which the point P2 matches the end point E2 is not included, that is, the point P is shown in FIG. If at least one of the end point E0, the end point E1, and the end point E2 on the trajectory shown in FIG. Is determined.
  • control unit 15 determines that the screen capture of the two-dimensional code 2 with a logo (moving image with a frame rate of 30 fps) is not real. To do.
  • the control unit 15 determines that the point P in the moving image is changing at a frame rate of 60 fps. If the point P in the moving image changes at a frame rate of 60 fps, the control unit 15 determines that the two-dimensional code 2 is a genuine logo.
  • the control unit 15 In response to an instruction to authenticate the two-dimensional code 2 with logo stored in the storage unit 12 input by the operation of the operation unit 14 by the user, the control unit 15 is stored in the storage unit 12.
  • the image authentication process shown in FIG. 4 is executed by executing the image authentication program.
  • control unit 15 first converts the two-dimensional code 2 with a logo expressed in the RGB color space or the CMYK color space into the two-dimensional code 2 with a logo expressed in the Lab color space. (Step S1).
  • the control unit 15 determines whether or not the logo-added two-dimensional code 2 represented in the Lab color space is a moving image (step S2). Specifically, from the L value indicating the brightness of a part of the background image 23 of the logo-added two-dimensional code 2 (the portion surrounded by the broken line shown in FIG. 2B), and the a value and b value indicating the hue. It is determined whether or not the two-dimensional code 2 with a logo is a moving image by determining whether or not the coordinates of the point P are changed, in particular, whether or not the a and b values indicating the hue are changed. Determine.
  • step S3 When it is determined that the logo-added two-dimensional code 2 is not a moving image (step S2; No), the control unit 15 is not a real one but a screen shot (still image) of the logo-added two-dimensional code 2 and the like. An authentication result indicating that the logo-added two-dimensional code 2 is captured is displayed on the display unit 13 (step S3).
  • step S2 when it is determined that the logo-added two-dimensional code 2 is a moving image (step S2; Yes), the control unit 15 determines that the point P in the moving image is an end point E0 on the orbit shown in FIG. It is determined whether or not the point P in the moving image is changing at a frame rate of 60 fps by determining whether or not it passes through all of E1 and the end point E2 (step S4).
  • step S4 the control unit 15 assumes that the screen capture of the two-dimensional code 2 with a logo (moving image with a frame rate of 30 fps) is not real, and the two-dimensional with logo An authentication result indicating that the code 2 is captured is displayed on the display unit 13 (step S3).
  • the control unit 15 determines that the two-dimensional code 2 with a logo is genuine on the display unit 13 (step S4; Yes). Displayed (step S5). In this case, the control unit 15 may access the URL expressed by the logo-added two-dimensional code 2 from the communication unit 11.
  • the logo-added two-dimensional code 2 displayed on the display unit 13 is partially or entirely (in this embodiment, FIG. 2B).
  • a part of the background image 23 surrounded by a broken line changes regularly in a manner that is difficult to recognize with the naked eye.
  • the screen shot (still image) generated by capturing the two-dimensional code 2 with the logo a part of the background image 23 of the two-dimensional code 2 with the logo does not change. It can be easily determined that it is not genuine. Thereby, capture of the two-dimensional code 2 with a logo can be prevented.
  • a part of the background image 23 of the logo-added two-dimensional code 2 displayed on the display unit 13 is a frame rate different from the frame rate (30 fps) for capturing a moving image, more specifically, the frame rate for capturing a moving image. Change at a higher frame rate (60 fps).
  • a screen capture moving image with a frame rate of 30 fps generated by capturing such a logo-added two-dimensional code 2
  • an L value indicating the brightness of a part of the background image 23
  • an a value and a b value indicating hue Since the coordinates of the point P consisting of do not pass through at least one of the end point E0, the end point E1, and the end point E2 on the trajectory shown in FIG. 3, the image authentication process shown in FIG. Can be determined. Thereby, capture of the two-dimensional code 2 with a logo can be prevented.
  • the two-dimensional code 2 with a logo has been described as an example.
  • the present invention is not limited to this, and any image may be used as long as part or all of the image changes in a manner that is difficult to recognize with the naked eye.
  • the portion other than the portion that changes in a manner that is difficult to recognize with the naked eye may be a still image or a moving image.
  • the frame rate of a part of the background image 23 of the logo-added two-dimensional code 2 displayed on the display unit 13 is a frame rate (30 fps) for capturing a moving image.
  • the frame rate (30 fps) and the frame rate (for example, 29 fps or 31 fps) that are relatively prime to each other may be used.
  • the background image 23 of the logo-added two-dimensional code 2 changes at a frame rate (for example, 29 fps or 31 fps) that is relatively prime to the frame rate (30 fps) for capturing a moving image
  • the background image The coordinates of a point P composed of an L value indicating a lightness of a part 23 and a value and b value indicating hue are at least one of the end point E0, the end point E1, and the end point E2 on the trajectory shown in FIG. Therefore, the image authentication process shown in FIG. 4 can easily determine that the image is not genuine. Thereby, capture of the two-dimensional code 2 with a logo can be prevented.
  • the L value indicating the brightness of a part of the background image 23 of the logo-added two-dimensional code 2 (the portion surrounded by the broken line shown in FIG. 2B), and a indicating the hue
  • the coordinates of the point P composed of the value and the b value change on a predetermined trajectory.
  • the present invention is not limited to this, and a color space representing a part of the color of the background image 23 of the logo-added two-dimensional code 2 can be arbitrarily changed.
  • the RGB color space or the CMYK color can be changed. It may be a space or the like.
  • a part of the color of the background image 23 of the logo-added two-dimensional code 2 may be represented by an R value, a G value, and a B value.
  • a part of the color of the background image 23 of the logo-added two-dimensional code 2 may be represented by a C value, an M value, a Y value, and a K value.
  • the a value and the b value indicating the hue are regularly changed.
  • the present invention is not limited to this, and either the a value or the b value is regularly set. It may be changed, or the L value indicating lightness may be changed regularly. Alternatively, all or any two of the L value indicating the lightness and the a value and the b value indicating the hue may be changed regularly.
  • the a value and the b value indicating the hue are described as continuously changing.
  • the present invention is not limited to this, and the L value indicating the brightness, the a value indicating the hue, and At least one of the b values may change instantaneously or may change intermittently.
  • the logo-added two-dimensional code 2 indicates that “cell dots less than a predetermined brightness are superimposed on a portion of the logo mark that is greater than or equal to the predetermined brightness, while portions of the logo mark that are less than the predetermined brightness are overlaid.
  • Cell dots with a predetermined brightness or higher are overlaid, and the distribution pattern of cell dots and logo marks with a predetermined brightness or higher and portions with a predetermined brightness or higher and cell dots and logo marks with a predetermined brightness lower than the predetermined brightness (For example, refer to Japanese Patent Application Laid-Open No. 2008-15642.)
  • the present invention is not limited to this and is recognized as “0” by a general-purpose two-dimensional code reader.
  • the predetermined information is expressed by using one or more colors of the optical characteristic to be recognized and one or more colors of the optical characteristic recognized as “1”.
  • it may be a general-purpose two-dimensional code composed of white cells and black cells, or a logo with a visible logo mark superimposed on the two-dimensional code.
  • it may be a two-dimensional code, such as a logo mark less than a predetermined lightness (lightness recognized as “0” by a general-purpose two-dimensional code reader), and a “1” by a general-purpose two-dimensional code reader.
  • Predetermined information may be expressed by a distribution pattern of cells and the portion of the logo mark where the cells are not superimposed (for example, Japanese Patent Application Laid-Open No. 2007-287004). In this specification, refer to the specifications, claims, and entire drawings of Japanese Patent Application Laid-Open Nos. 2007-287004 and 2008-15642. It is assumed that the takes in.
  • the QR code (registered trademark) is exemplified as the two-dimensional code.
  • the two-dimensional code includes a data matrix, an aztec code, a code one, and an array tag.
  • Other matrix type two-dimensional codes such as a box graphic code, a maxi code, a peri code, a soft strip, a CP code, a Carla code, and an ultra code may be used.
  • a stack type two-dimensional code in which one-dimensional barcodes such as PDF417, code 49, code 16k, and coder block are vertically stacked may be used.
  • the program executed by the CPU of the control unit 15 is stored in advance in the ROM, the storage unit 12, or the like.
  • the present invention is not limited to this, and by applying a program for executing the above-described processing to existing smartphones, general-purpose terminal devices such as tablets and personal computers, frameworks, workstations, and the like.
  • the image processing apparatus 1 according to the embodiment may function.
  • the method of providing such a program is arbitrary.
  • the program may be stored and distributed on a computer-readable recording medium (flexible disk, CD (Compact Disc) -ROM, DVD (Digital Versatile Disc) -ROM, etc.).
  • the program may be stored in a storage on a network such as the Internet and provided by downloading it.
  • the above processing is executed by sharing between an OS (Operating System) and an application program, or in cooperation with the OS and the application program, only the application program may be stored in a recording medium or storage. It is also possible to superimpose a program on a carrier wave and distribute it via a network. For example, the program may be posted on a bulletin board (BBS: Bulletin Board System) on the network, and the program may be distributed via the network. Then, this program may be activated and executed in the same manner as other application programs under the control of the OS, so that the above processing can be executed.
  • BSS Bulletin Board System

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Abstract

Selon l'invention, un code bidimensionnel portant un logo (2) affiché sur une unité d'affichage possède une partie ou la totalité d'une image d'arrière-plan (23) de celui-ci variant régulièrement d'une manière qui est difficile à reconnaître à l'œil nu. Un instantané d'écran (image fixe), généré par capture d'un tel code bidimensionnel portant un logo (2), peut être facilement distingué comme n'étant pas authentique par un procédé d'authentification d'image lorsqu'une partie de l'image d'arrière-plan (23) du code bidimensionnel portant un logo (2) ne varie plus. Ainsi, il est possible d'empêcher la capture du code bidimensionnel portant un logo (2).
PCT/JP2014/059370 2014-03-28 2014-03-28 Dispositif de traitement d'image, procédé de traitement d'image et programme WO2015145779A1 (fr)

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PCT/JP2014/059370 WO2015145779A1 (fr) 2014-03-28 2014-03-28 Dispositif de traitement d'image, procédé de traitement d'image et programme
JP2014540242A JP5636523B1 (ja) 2014-03-28 2014-03-28 画像処理装置、画像処理方法、及びプログラム

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JP5777264B1 (ja) * 2014-02-26 2015-09-09 株式会社Ｍｒｓホールディングズ バーコード表示装置、バーコード表示装置の動作方法およびプログラム

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