WO2011118540A1 - ロゴ付き二次元コード、ロゴ付き二次元コード生成装置、ロゴ付き二次元コード生成方法、及びプログラム - Google Patents
ロゴ付き二次元コード、ロゴ付き二次元コード生成装置、ロゴ付き二次元コード生成方法、及びプログラム Download PDFInfo
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- WO2011118540A1 WO2011118540A1 PCT/JP2011/056655 JP2011056655W WO2011118540A1 WO 2011118540 A1 WO2011118540 A1 WO 2011118540A1 JP 2011056655 W JP2011056655 W JP 2011056655W WO 2011118540 A1 WO2011118540 A1 WO 2011118540A1
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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
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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
- G06K19/06046—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
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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
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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
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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
- G06K19/06046—Constructional details
- G06K19/06112—Constructional details the marking being simulated using a light source, e.g. a barcode shown on a display or a laser beam with time-varying intensity profile
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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
- G06K19/06046—Constructional details
- G06K19/0614—Constructional details the marking being selective to wavelength, e.g. color barcode or barcodes only visible under UV or IR
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
- G06K7/1404—Methods for optical code recognition
- G06K7/1408—Methods for optical code recognition the method being specifically adapted for the type of code
- G06K7/1417—2D bar codes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T11/00—2D [Two Dimensional] image generation
- G06T11/60—Editing figures and text; Combining figures or text
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
- G09G5/024—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed using colour registers, e.g. to control background, foreground, surface filling
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- G06T2207/20—Special algorithmic details
- G06T2207/20212—Image combination
- G06T2207/20221—Image fusion; Image merging
Definitions
- the present invention relates to a two-dimensional code with a logo, a two-dimensional code generation device with a logo, a two-dimensional code generation method with a logo, and a program.
- a two-dimensional code with a logo that overlays a two-dimensional code that expresses information with a cell distribution pattern and a logo image that can be visually recognized is already known (see, for example, Patent Document 1).
- cells having a predetermined brightness or higher in the logo image are overlaid with cells having a predetermined brightness, while those having a predetermined brightness or lower in the logo image are already known. It has been.
- information is obtained by a distribution pattern of a cell and a logo image having a predetermined brightness or higher and a portion having a predetermined brightness or higher and a cell and a logo image having a predetermined brightness or lower and a portion having a predetermined brightness or lower. Is expressed (see, for example, Patent Document 2).
- the two-dimensional code with the logo is different from the two-dimensional code consisting only of white and black cells, and there is a possibility that information cannot be read accurately due to post-processing after printing or the influence of ambient light.
- the design of the logo image is impaired if the cell is large, and if the cell is small, the information represented by the two-dimensional code with the logo is displayed. There is a problem that the readability is impaired.
- a portion of the logo image that may be read as “0” or “1” due to post-processing after printing or the influence of ambient light is less than a predetermined brightness. Since only one of the cell and the cell having a predetermined brightness or higher is overlapped, there is a possibility that information cannot be read accurately.
- the present invention has been made to solve the above-described problem, and is a two-dimensional code with a logo that can be accurately read, a two-dimensional code generation device with a logo that generates the same, a two-dimensional code generation method with a logo, And to provide a program.
- a logo-added two-dimensional code generation device has a predetermined distribution pattern of cells arranged in a matrix on a logo image in which a logo is drawn on a background.
- a logo-added two-dimensional code generation device for generating a two-dimensional code with a logo by superimposing two-dimensional codes representing information, wherein the logo image represented in a Lab color space is superimposed on the two-dimensional code to be superimposed
- Logo image dividing means for dividing the image into a plurality of areas corresponding to the cells, and the two-dimensional based on an L value in a predetermined reference area among the plurality of areas divided by the logo image dividing means.
- Cell setting means for setting an L value of a first type cell among a plurality of types of cells constituting the code, and the first value in which the L value is set by the cell setting means in the logo image 2D code generation with logo for generating a 2D code with a logo by superimposing a cell of the same type and a second type of cell different from the first type among a plurality of types of cells constituting the 2D code And means.
- the logo-added two-dimensional code generation device further includes reference L value determination means for determining whether or not an L value in the reference area is equal to or greater than a predetermined threshold, and the cell setting means includes the reference L value determination When the means determines that the L value in the reference area is equal to or greater than the predetermined threshold, the value greater than or equal to the L value in the reference area is set as the L value of the first type cell, When it is determined that the L value in the reference area is less than the predetermined threshold, a value equal to or less than the L value in the reference area may be set as the L value of the first type cell.
- the apparatus when it is determined that the L value in the reference area is equal to or greater than the predetermined threshold, a predetermined number is added to the L value in the reference area.
- the apparatus when it is determined that the L value in the reference area is less than the predetermined threshold, the apparatus further includes an operation value calculation means for calculating an operation value by subtracting a predetermined number from the L value in the reference area,
- the cell setting means includes calculation value determination means for determining whether or not the calculation value calculated by the calculation value calculation means is within a range from a predetermined lower limit value to a predetermined upper limit value.
- the predetermined lower limit value is set as the L value of the first type cell, and the calculated value is determined from the predetermined lower limit value.
- the calculated value is set as the L value of the first type cell, and when it is determined that the calculated value is larger than the predetermined upper limit value, the predetermined upper limit value is set to the first type cell. It may be set as the L value of the cell.
- the logo image is analyzed based on the L value in each region divided by the logo image dividing unit, and the region where the logo is drawn from the logo image and the region It further comprises logo image analysis means for extracting an area on which a background is drawn, and the cell setting means is determined by the reference L value determination means that the L value in the reference area is less than the predetermined threshold value.
- a value equal to or smaller than the L value in the reference area may be set as the L value of the first type cell to be overlaid on the area where the logo is drawn.
- the cell setting unit calculates an a value and a b value in an area analyzed when the logo is drawn by the logo image analysis unit, as the first type cell. You may make it set as a value and b value.
- the cell setting unit may set a value equal to or higher than the predetermined threshold as an L value of the second type cell.
- color space conversion means for converting the logo image represented in a color space different from the Lab color space into the logo image represented in the Lab color space
- logo Color space reconverting means for reconverting the logo image represented by the Lab color space generated by the attached two-dimensional code generating means into the logo image represented by a color space different from the Lab color space
- the logo-added two-dimensional code generation device may further include cell reduction means for reducing the size of the first type and the second type of cells.
- a logo-added two-dimensional code generation method is based on a distribution pattern of cells arranged in a matrix on a logo image in which a logo is drawn on a background.
- a two-dimensional code generation method with a logo for generating a two-dimensional code with a logo by superimposing a two-dimensional code representing information, wherein the logo image represented in a Lab color space
- a logo image dividing step for dividing the logo image into a plurality of regions corresponding to the cells, and the two-dimensional based on an L value in a predetermined reference region among the plurality of regions divided by the logo image dividing step.
- a cell setting step for setting an L value of a first type cell among a plurality of types of cells constituting the code; and the L value is set in the logo image by the cell setting step.
- a two-dimensional code generation step for generating a two-dimensional code with a logo by superimposing the first-type cells thus formed and a second type of cells different from the first type among a plurality of types of cells constituting the two-dimensional code.
- a program according to the third aspect of the present invention is a two-dimensional representation of predetermined information by a distribution pattern of cells arranged in a matrix on a logo image in which a logo is drawn on a background.
- a computer of a logo-added two-dimensional code generation apparatus that generates a two-dimensional code with a logo superimposed on the code, and a plurality of the logo images represented in the Lab color space corresponding to the cells of the two-dimensional code to be superimposed
- a plurality of types constituting the two-dimensional code based on an L value in a predetermined reference area among the plurality of areas divided by the logo image dividing procedure
- a cell setting procedure for setting the L value of the first type of cells, and the first type cell in which the L value is set in the logo image by the cell setting procedure A two-dimensional code generation procedure with a logo for generating a two-dimensional code with a logo by superimposing a second type cell different from the first type among a plurality of types of cells constituting the two-dimensional code,
- the logo-added two-dimensional code according to the fourth aspect of the present invention provides predetermined information according to a distribution pattern of cells arranged in a matrix on a logo image in which a logo is drawn on a background.
- a two-dimensional code with a logo obtained by superimposing two-dimensional codes to be expressed, wherein the size of the cell is different depending on where the logo image is superimposed.
- a cell superimposed on a portion of the logo image on which the logo is drawn may be larger in size than the logo superimposed on the background.
- the two-dimensional code expresses predetermined information by a distribution pattern of a first type cell and a second type cell having a higher brightness than the first type cell,
- the logo image only the first type cell is superimposed on a portion less than the first brightness, while the first type cell and the second type are overlapped on the portion above the first brightness. You may make it overlap
- a portion of the logo image that is greater than or equal to the first brightness and less than the second brightness overlaps both the first type cell and the second type cell, Only the second type cell may be overlaid on the portion of the second brightness or higher.
- a two-dimensional code with a logo that can be accurately read, a two-dimensional code generation device with a logo, a two-dimensional code generation method with a logo, and a program.
- FIG. 1 It is a block diagram which shows the structural example of the two-dimensional code production
- (A) is a figure which illustrates a logo image
- (b) is explanatory drawing which illustrates the analysis process of a logo image. It is a figure which illustrates the shape of a cell. It is a figure which illustrates the two-dimensional code with a logo concerning a 1st embodiment.
- FIG. 1 is a block diagram illustrating a configuration example of a logo-added two-dimensional code generation device according to the first embodiment.
- the logo-added two-dimensional code generation device 1 is realized by a general-purpose computer including, for example, a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), a hard disk drive, and the like, and is illustrated in FIG. As described above, the color space conversion unit 10, the lightness acquisition unit 20, the image analysis unit 30, the two-dimensional code generation unit 40, the logo image synthesis unit 50, and the color space reconversion unit 60 are provided.
- a CPU Central Processing Unit
- ROM Read Only Memory
- RAM Random Access Memory
- the color space conversion unit 10 converts a logo image expressed in an RGB color space or a CMYK color space on which a two-dimensional code such as a QR code (registered trademark) is superimposed, for example, into a logo image expressed in a Lab color space. .
- the lightness acquisition unit 20 divides the logo image represented by the Lab color space converted by the color space conversion unit 10 according to the cells constituting the two-dimensional code to be superimposed, and the lightness of the color for each divided region.
- L value value from “0” to “100”
- the number of cells constituting the two-dimensional code to be superimposed is 29 ⁇ 29
- the logo image with the logo drawn on the background shown in FIG. 2A is divided into 29 ⁇ 29 areas.
- the L value in each region is obtained.
- the 1 includes a background lightness flag, and analyzes a logo image based on the L value acquired by the lightness acquisition unit 20.
- the background brightness flag is set to the on state.
- the image analysis unit 30 shown in FIG. 1 extracts a logo part region and a background part region from the logo image by performing a labeling process for adding a group attribute to each pixel constituting the logo image. Is obtained as the analysis result of the logo image.
- the labeling process refers to classifying a plurality of regions as a group by adding the same label to connected pixels.
- a labeling process using four neighbors is performed. Specifically, in the labeling process, first, a pixel to which no label is added is found on the logo image, and a new label is added. Next, the same label is added to the pixels connected to the pixels in four directions. And the same label is added with respect to the pixel which connected the pixel which added the same label, and four directions.
- this operation is repeated as long as there is a pixel to which a label is added in the logo image.
- searching for a pixel to be labeled in the logo image is called scanning. If the logo part area and the background part area are extracted from the logo image using the labeling process in this way, the logo part has an L value that is the same as or close to the L value of the background part area. Even if there is, it is possible to prevent such a region from being erroneously analyzed as a region of the background portion.
- the two-dimensional code generation unit 40 generates a two-dimensional code to be superimposed on the logo image. Specifically, the two-dimensional code generation unit 40 converts input text such as numbers, characters, symbols, etc. according to a distribution pattern of 29 ⁇ 29 white cells and black cells arranged in a matrix. Generate a two-dimensional code to represent.
- the two-dimensional code generation unit 40 separates the generated two-dimensional code into a white cell portion (negative portion) and a black cell portion (positive portion), and then the image analysis unit 30. Based on the analysis result in, the negative part is further separated into the logo part and the background part to generate the logo negative part and the background negative part, and the positive part is further separated into the logo part and the background part. And the background positive part.
- the two-dimensional code generation unit 40 determines whether or not the background lightness flag is on, and if it is on, a value obtained by subtracting a predetermined value (“5” in the present embodiment) from the reference value. ("47" in the example shown in FIG. 2) is obtained. Subsequently, the two-dimensional code generation unit 40 determines whether or not the subtraction value is within a predetermined numerical range (“0” to “45” in the present embodiment).
- the two-dimensional code generation unit 40 sets the a value and b value of the logo positive portion cell to the a value and b value in the region first analyzed as the logo portion by the image analysis unit 30, and the subtraction value is predetermined. If the value is less than the lower limit “0” of the numerical range, the lower limit value “0” is set, the subtracted value is set within the predetermined numerical range “0” to “45”, and the upper limit value “45” or more of the predetermined numerical range If so, the upper limit “45” is set to the L value of the cell in the logo positive part. Further, the two-dimensional code generation unit 40 sets the L value of the cells of the logo negative part and the background negative part to “100”.
- the two-dimensional code generation unit 40 obtains a value obtained by adding a predetermined value (“5” in the present embodiment) from the reference value. Subsequently, the two-dimensional code generation unit 40 determines whether or not the added value is within a predetermined numerical range (“0” to “45” in the present embodiment).
- the two-dimensional code generation unit 40 sets the a value and the b value of the cell in the background positive part to the a value and the b value in the area first analyzed as the logo part by the image analysis unit 30, and the added value is Set the added value as the L value of the cell in the background positive portion if the value is within the predetermined numerical range “0” to “45”, and the upper limit value “45” if it is greater than or equal to the upper limit value “45” of the predetermined numerical range To do. Further, the two-dimensional code generation unit 40 sets the L value of the cells of the logo negative part and the background negative part to “100”.
- the two-dimensional code generation unit 40 selects a background negative portion or background positive portion cell, for example, one side of the cell whose diameter is the original. It is deformed into a round shape that is 75% of the length of. Further, as shown in FIG. 3B, the two-dimensional code generation unit 40 transforms the logo negative portion cell into a round shape whose diameter is 62.5% of the length of one side of the original cell, for example. At the same time, as shown in FIG. 3C, the logo positive cell is transformed into a round shape whose diameter is 56% of the length of one side of the original cell, for example. Note that the length of the diameter of the deformed round cell is not limited to the above, and can be arbitrarily changed without departing from the gist thereof.
- the two-dimensional code generation unit 40 selects the cell of the background negative part or the background positive part of the original cell with the length of one side. The size is reduced to 75% of the length of one side. Further, as shown in FIG. 3E, the two-dimensional code generation unit 40 sets the cell of the logo negative part so that the length of one side thereof is, for example, 62.5% of the length of one side of the original cell. At the same time, as shown in FIG. 3F, the logo positive portion cell is reduced so that the length of one side thereof is, for example, 56% of the length of one side of the original cell. Note that the length of one side of the reduced quadrangular cell is not limited to the above, and can be arbitrarily changed without departing from the scope of the invention.
- the logo image synthesis unit 50 synthesizes the logo image and the two-dimensional code generated by the two-dimensional code generation unit 40. Specifically, if the background brightness flag is on, the logo image composition unit 50 superimposes on the logo image in order of three positioning symbols that combine a background negative part, a logo negative part, a logo positive part, and a square with a specific ratio. Synthesize together. On the other hand, if the background lightness flag is off, the logo image composition unit 50 composes the logo image by superimposing the background positive part, the logo negative part, the logo positive part, and the positioning symbol in this order.
- the color space re-conversion unit 60 converts the two-dimensional code with logo represented by the Lab color space synthesized by the logo image synthesis unit 50 into the two-dimensional code with logo represented by the RGB color space or the CMYK color space. Then, a two-dimensional code with a logo as shown in FIG. 4 is generated.
- the user inputs text such as numbers, letters, symbols, etc., specifies the logo image, the number and shape of the cells that make up the two-dimensional code, and is instructed to generate a two-dimensional code with a logo.
- the logo-added two-dimensional code generation device 1 starts the logo-added two-dimensional code generation process shown in FIGS. 5 and 6.
- the two-dimensional code generation apparatus 1 with a logo first converts the logo image represented in the RGB color space or CMYK color space designated by the user into the Lab color by the color space conversion unit 10. It converts into the logo image represented by space (step S1 shown in FIG. 5).
- the logo-added two-dimensional code generation device 1 uses the lightness acquisition unit 20 to convert the logo image converted in step S1 into the number of cells constituting the two-dimensional code designated by the user (for example, 29 ⁇ 29). (Step S2), and an L value is acquired for each divided area (step S3).
- the logo-added two-dimensional code generation device 1 determines in the image analysis unit 30 whether or not the L value (reference value) in the reference region divided in step S2 is greater than or equal to the threshold value “60” ( Step S4). If the reference value is greater than or equal to the threshold value “60” (step S4; Yes), the background brightness flag is cleared and turned off (step S5). On the other hand, when the reference value is less than the threshold value “60” (step S4; No), the background lightness flag is set to the on state (step S6).
- the logo-added two-dimensional code generation device 1 extracts a logo part region and a background part region from the logo image by performing a labeling process in the image analysis unit 30, and obtains this as a logo image analysis result. (Step S7).
- the logo-added two-dimensional code generation device 1 generates a two-dimensional code representing the text input by the user in the two-dimensional code generation unit 40 (step S8).
- the logo-added two-dimensional code generation device 1 uses the two-dimensional code generation unit 40 to separate the two-dimensional code generated in the process of step S8 into a negative part and a positive part, and then analyze in the process of step S7. Based on the result, the negative part is separated from the logo negative part and the background negative part, and the positive part is separated into the logo positive part and the background positive part (step S9).
- the two-dimensional code generation unit 40 determines whether or not the background lightness flag is on (step S10).
- step S10 If the background lightness flag is on (step S10; Yes), the logo-added two-dimensional code generation device 1 obtains a value obtained by subtracting “5” from the reference value in the two-dimensional code generation unit 40 (step S11). Then, it is determined whether or not the subtraction value is greater than or equal to the lower limit value “0” (step S12).
- step S12 when the subtraction value is less than the lower limit value “0” (step S12; No), the a value and b value of the cell in the logo positive part are the areas first analyzed as the logo part in the process of step S7. And the lower limit value is set to the L value of the cell in the logo positive part (step S13).
- step S12 when the subtraction value is equal to or greater than the lower limit value “0” (step S12; Yes), it is determined whether or not the subtraction value is equal to or less than the upper limit value “45” (step S14). If “45” or less (step S14; Yes), the a value and b value of the cell in the logo positive part are set to the a value and b value in the region first analyzed as the logo part in the process of step S7. The subtraction value is set to the L value of the cell of the logo positive part (step S15).
- step S14 when the subtraction value is larger than the upper limit value “45” (step S14; No), the a value and b value of the cell in the logo positive part are set to a in the region first analyzed as the logo part in the process of step S7.
- the upper limit value “45” is set to the L value of the logo positive portion cell (step S16).
- the logo-added two-dimensional code generation device 1 obtains a value obtained by adding a predetermined value from the reference value in the two-dimensional code generation unit 40 (see FIG. 6 (step S17), it is determined whether or not the added value is not more than the upper limit value “45” (step S18). If the added value is not more than the upper limit value “45” (step S18; Yes), the logo positive portion The a value and b value of the cell are set to the a value and b value in the region first analyzed as the logo part in the process of step S7, and the added value is set to the L value of the cell of the background positive part ( Step S19).
- step S18 when the added value is larger than the upper limit value “45” (step S18; No), the a value and b value of the cell in the logo positive portion are set to a in the region first analyzed as the logo portion in the process of step S7.
- the upper limit value “45” is set to the L value of the cell in the background positive portion (step S20).
- the two-dimensional code generating apparatus 1 with a logo uses the L value of the cells of the logo negative part and the background negative part in the two-dimensional code generating unit 40. Is set to "100" (step S21).
- the logo-added two-dimensional code generation device 1 causes the two-dimensional code generation unit 40 to transform the cell into a shape designated by the user (step S22).
- the background negative portion or the background positive portion cell is transformed into a round shape whose diameter is, for example, 75% of the length of one side of the original cell.
- the logo negative cell is transformed into a round shape whose diameter is 62.5% of the length of one side of the original cell
- the logo positive cell is, for example, one side of the original cell. It is deformed into a round shape that is 56% of the length of.
- the cells in the background negative part and the background positive part are reduced so that, for example, the length of one side thereof is 75% of the length of one side of the original cell.
- the logo negative cell is reduced so that, for example, the length of one side thereof becomes 62.5% of the length of one side of the original cell, and the cell of the logo positive portion, for example, has the original length of one side.
- the cell is reduced to 56% of the length of one side.
- the logo-added two-dimensional code generation device 1 combines the logo image and the two-dimensional code generated by the two-dimensional code generation unit 40 in the logo image synthesis unit 50 (step S23).
- step S25 if the background lightness flag is on, the background image portion, the logo negative portion, the logo positive portion, and the three positioning symbols obtained by combining the squares with a specific ratio are superimposed and synthesized on the logo image in this order.
- the background lightness flag is off, the background positive portion, the logo negative portion, the logo positive portion, and the positioning symbol are superimposed and synthesized on the logo image in this order.
- the logo-added two-dimensional code generation device 1 uses the RGB color space or the CMYK color space in the color space re-conversion unit 60 to generate the logo-added two-dimensional code represented by the Lab color space synthesized by the logo image synthesis unit 50. Is converted into a two-dimensional code with a logo represented by (2) to generate a two-dimensional code with a logo (step S24).
- the color of the two-dimensional code to be superimposed on the logo image is determined by adjusting the L value indicating the brightness of the color. Therefore, a readable two-dimensional code with a logo can be generated regardless of post-processing after printing or the influence of ambient light.
- FIG. 7 is a diagram illustrating a two-dimensional code with a logo according to the second embodiment.
- the logo-added two-dimensional code 3 has a structure in which a two-dimensional code is superimposed on a logo image that visibly represents a tiger character (logo) on a background.
- the two-dimensional code is, for example, a QR (Quick Response) code (registered trademark), and in the present embodiment, 37 ⁇ 37 cells are arranged in a matrix.
- the two-dimensional code includes 37 ⁇ 37 cells, for example, a negative type cell (for example, a white cell) of lightness determined as “0” by a general-purpose two-dimensional code reader, and a general-purpose two-dimensional code reader.
- Predetermined information for example, URL (Uniform Resource Locator), etc.
- the logo-added two-dimensional code 3 includes three positioning symbols 4a, 4b, and 4c obtained by combining squares having a specific ratio, and a circular cell is a matrix between the positioning symbols 4a, 4b, and 4c. Arranged in a shape.
- a negative type cell for example, a white cell
- a background portion of lightness determined as “1” by a general-purpose two-dimensional code reader is superimposed on a background portion of lightness determined as “1” by a general-purpose two-dimensional code reader.
- a negative type cell for example, a white cell
- a portion of lightness determined as “1” by a general-purpose two-dimensional code reader A portion (for example, a tiger stripe or a mouth portion) and a portion where a negative type cell (for example, a white cell) or a positive type cell (for example, a black cell) is not superimposed (for example, a portion of a tiger's eyes or nose) There is.
- a lightness portion eg, a tiger's face portion
- a negative type cell eg, a white cell
- a positive type cell eg, a black cell
- the logo-added two-dimensional code 3 can ensure the design of the logo image without impairing the information readability.
- the two-dimensional code 3 with a logo improves the designability of the logo image. Can be secured.
- FIG. 8 is a block diagram showing a configuration example of a logo-added two-dimensional code generation device according to the second embodiment.
- the logo-added two-dimensional code generation device 2 is realized by, for example, a general-purpose computer, and includes a display unit 70, a storage unit 80, an operation unit 90, and a control unit 100 as shown in FIG.
- the display unit 70 is composed of, for example, an LCD (Liquid Crystal Display) or the like, and as shown in FIG. 9, a logo image (carpet image) on which a two-dimensional code is superimposed, or a cell of a two-dimensional code superimposed on a logo image. Displays an operation image or the like for specifying the type.
- LCD Liquid Crystal Display
- FIG. 9 a logo image (carpet image) on which a two-dimensional code is superimposed, or a cell of a two-dimensional code superimposed on a logo image.
- the storage unit 80 includes, for example, a hard disk drive and stores various image data such as logo images and operation images, various programs, and various databases (DB: DateBase). As an example of such a DB, the storage unit 80 stores a cell DB 85 as shown in FIG.
- the cell DB 85 registers the color (designated color) colored in each part of the operation image and the cell type of the two-dimensional code in association with each other.
- the designated color (1) Among the portions colored R255 / G0 / B255, the portion corresponding to the negative type cell (negative portion) has a diameter that is the length of one side of the original cell as shown in FIG.
- a circular negative type cell for example, a white cell
- a white cell that is 80% of the height is superimposed on the logo image, while the logo image is displayed as it is in a portion (positive portion) corresponding to the positive type cell.
- the negative portion of the portion colored in the designated color (2) R255 / G0 / B0 is a circular negative type whose diameter is 70% of the length of one side of the original cell.
- the cells for example, white cells
- the logo image is displayed as it is in the positive portion.
- the negative portion of the portion colored in the designated color (3) R0 / G255 / B0 has a circular negative type whose diameter is 60% of the length of one side of the original cell.
- the cells for example, white cells
- the logo image is displayed as it is in the positive portion.
- the logo image is displayed as it is in the negative portion, while the diameter is the original cell in the positive portion.
- a circular positive type cell (for example, a black cell), which is 60% of the length of one side, is superimposed on the logo image.
- the logo image is displayed as it is in the negative portion, while the diameter is the original cell in the positive portion.
- a circular positive type cell (for example, a black cell), which is 50% of the length of one side, is superimposed on the logo image.
- the logo image is displayed as it is in the portion colored in the designated color (6) R0 / G255 / B255.
- the negative portion is a circular negative type whose diameter is 80% of the length of one side of the original cell, as shown in FIG.
- Cells for example, white cells
- the positive part has a circular positive type cell (for example, black cells) whose diameter is 60% of the length of one side of the original cell Is superimposed on the logo image.
- the negative portion is a circular negative type whose diameter is 80% of the length of one side of the original cell, as shown in FIG.
- Cells for example, white cells
- the positive part has a circular positive type cell (for example, black cells) whose diameter is 50% of the length of one side of the original cell Is superimposed on the logo image.
- the negative portion is a circular negative type whose diameter is 60% of the length of one side of the original cell, as shown in FIG.
- Cells for example, white cells
- the positive part has a circular positive type cell (for example, black cells) whose diameter is 60% of the length of one side of the original cell Is superimposed on the logo image.
- the negative portion is a circular negative type whose diameter is 60% of the length of one side of the original cell, as shown in FIG.
- Cells for example, white cells
- the positive part has a circular positive type cell (for example, black cells) whose diameter is 50% of the length of one side of the original cell Is superimposed on the logo image.
- the negative portion is a circular negative type whose diameter is 95% of the length of one side of the original cell, as shown in FIG.
- the cells for example, white cells
- the logo image is displayed as it is in the positive portion.
- the negative portion has a circular negative type whose diameter is 90% of the length of one side of the original cell, as shown in FIG.
- the cells for example, white cells
- the logo image is displayed as it is in the positive portion.
- the operation unit 90 includes, for example, a keyboard and a mouse.
- the operation unit 90 designates the color (designated color) of each part of the operation image, designates the number of cells constituting a logo image or a two-dimensional code, It is used to input text consisting of numbers, characters, symbols, etc. to be encoded.
- description will be made on the assumption that each part of the operation image is painted in advance with a specified color, but the present invention is not limited to this, and is painted each time a logo-added two-dimensional code is created. You may make it divide.
- the control unit 100 includes, for example, a CPU, a ROM, a RAM, and the like.
- the CPU uses a RAM as a work memory, and appropriately executes various programs stored in the ROM, the storage unit 80, etc. The operation of each part of the two-dimensional code generation device 2 is controlled.
- the control unit 100 paints the operation images displayed on the display unit 70 according to the operation of the operation unit 90.
- the operation images are designated colors (1) R255 / G0 / B255, designated colors (6) R0 / G255 / B255, designated colors (9) R0 / G126 / B255, designated colors ( 12) Painted separately to R0 / G0 / B126.
- control unit 100 inputs text such as numerals, characters, symbols, etc. to the operation unit 90, and designates a logo image, the number of cells constituting the two-dimensional code (for example, 37 ⁇ 37), and the like. Then, in response to an instruction to generate a two-dimensional code with a logo, the text input to the operation unit 90 is divided into white negative type cells and black positive type cells. A two-dimensional code represented by is generated.
- the control unit 100 divides the operation image into 37 ⁇ 37 cells in accordance with the size of the generated two-dimensional code cell, and each cell has designated colors (1) to ( It is determined which of 12) is colored.
- the specified color at the center of the cell is determined to be the specified color of the cell. If there is an error in the color designation, it may be determined by an approximate value.
- control unit 100 specifies, for each cell, the cell type corresponding to the cell specified color and whether the cell is a negative part or a positive part from the cell DB 85 shown in FIG.
- the cell type in the negative portion of the portion colored in the designated color (1) is a circle whose diameter is 80% of the length of one side of the original cell.
- White cell, and the cell type in the positive portion is specified as the logo image as it is.
- Specified color (6) In the portion colored R0 / G255 / B255, the cell type in the negative part and the positive part is specified as the logo image as it is.
- the cell type in the negative part is specified as a circular white cell whose diameter is 60% of the length of one side of the original cell.
- the cell type in the positive part is specified as a circular black cell whose diameter is 60% of the length of one side of the original cell.
- the cell type in the negative part is specified as a circular white cell whose diameter is 90% of the length of one side of the original cell.
- the cell type in the positive part is specified as the logo image as it is.
- the control unit 100 generates a two-dimensional code with a logo as shown in FIG. 7 by superimposing the specified type of cell on the corresponding part of the logo image specified by the operation unit 90.
- the logo-added two-dimensional code generation device 2 starts the logo-added two-dimensional code generation process shown in FIG.
- the control unit 100 of the logo-added two-dimensional code generation device 2 first converts the text input to the operation unit 90 into white negative type cells, as shown in FIG. A two-dimensional code represented by a distribution pattern of black positive type cells is generated (step S31).
- control unit 100 divides the operation image corresponding to the logo image specified by the operation unit 90 in accordance with the cell size of the two-dimensional code generated in the process of step S31 (step S32). Then, the control unit 100 determines which one of the specified colors (1) to (12) of each cell divided in the process of step S32 is colored (step S33).
- control unit 100 selects a cell corresponding to the specified color of the cell determined in the process of step S33 and whether the cell is a negative part or a positive part.
- the type is specified from the cell DB 85 shown in FIG. 10 (step S34).
- control part 100 produces
- the size of the cell differs depending on which part of the logo image is overlaid, which impairs information readability.
- the design of the logo image can be ensured. Specifically, since the cell superimposed on the tiger character whose designability is likely to be impaired is smaller in size than the cell superimposed on the background portion, the two-dimensional code with logo 3 is easy to read information. The design of the logo image can be ensured without impairing the image quality.
- a negative type cell for example, a white cell
- a positive type cell for example, the design property of the logo image can be ensured without impairing the readability of information by not overlapping the black cells.
- the L value of the cell of the logo negative part and the background negative part has been described as being set to “100”.
- the threshold value “60” or more is optional, and preferably “70” or more. It is good to be. That is, the cells of the logo negative part and the background negative part may be other than “white”.
- a negative type cell for example, a white cell
- a positive type cell for example, a black cell
- the present invention is not limited to this, and the brightness portion (for example, the tiger's face portion) that is discriminated as “0” or “1” due to post-processing after printing or the influence of ambient light, etc. Only a negative type cell (for example, a white cell) and a positive type cell (for example, a black cell) may be overlapped.
- the logo-added two-dimensional code 3 can further ensure the design of the logo image without impairing the information readability.
- the cell shape of the two-dimensional code with logo has been described as being circular, but the present invention is not limited to this, and may be a polygon or a star.
- the size of the cell of the two-dimensional code is 4 px ⁇ 4 px and the shape of the cell to be superimposed on the logo image is a square, refer to the cell DB 86 shown in FIG. What is necessary is just to determine the type of the cell to overlap.
- the color of the negative type cell can be arbitrarily changed as long as it is determined as “0” by a general-purpose two-dimensional code reader.
- the color of can be arbitrarily changed as long as it is determined as “1” by a general-purpose two-dimensional code reader.
- the logo image and the number of cells constituting the two-dimensional code are designated by the operation unit 90 when creating the two-dimensional code with a logo.
- the present invention is not limited to this.
- the size of the cell constituting the two-dimensional code for example, when used for a business card
- 18mm 25mm including blank
- 42mm 60mm including blank
- 116mm 162mm including blank
- Designation of the shape, the color of the negative type cell, the color of the positive type cell, and the like may be performed.
- the two-dimensional code creation process with a logo is executed according to the operation of the operation unit 90.
- a logo-added two-dimensional code creation process may be executed in response to an instruction from an external communication terminal. Specifically, after receiving the specified logo image, the number of cells constituting the two-dimensional code, and the input text from the external communication terminal via the network, the generation of the two-dimensional code with the logo is instructed.
- the control unit 100 of the logo-added two-dimensional code creation device 2 may execute a logo-added two-dimensional code creation process.
- the logo-added two-dimensional code generated by the logo-added two-dimensional code creation process is displayed on the screen of the external communication terminal for confirmation, and then externally connected from the logo-added two-dimensional code creation device 2 via the network. May be downloaded to the communication terminal.
- the description will be made assuming that the number of cells constituting the two-dimensional code is 29 ⁇ 29.
- the number of cells constituting the two-dimensional code is 37 ⁇ 37.
- the present invention is not limited to this, and the number of cells can be arbitrarily changed, and may be 33 ⁇ 33 or 41 ⁇ 41.
- the number of cells constituting the two-dimensional code is any one of 29 ⁇ 29, 33 ⁇ 33, 37 ⁇ 37, and 41 ⁇ 41 depending on the input text (for example, the number of characters). It may be determined.
- the two-dimensional code generation unit 40 and the control unit 100 determine the number of cells according to the input text, and input according to the distribution pattern of white cells and black cells of the determined number of cells.
- a two-dimensional code representing the generated text may be generated.
- the two-dimensional code generation unit 40 may notify the lightness acquisition unit 20 of the determined number of cells. Then, the brightness acquisition unit 20 may divide the logo image according to the notified number of cells.
- the control unit 100 may divide according to the determined number of cells.
- the QR code (registered trademark) is exemplified as the two-dimensional code.
- the two-dimensional code includes a data matrix, an aztec code.
- Other matrix type two-dimensional codes such as code one, array tag, box graphic code, maxi code, peri code, soft strip, CP code, carla code, and 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 has been described as being stored in advance in a ROM or the like.
- the present invention is not limited to this, and the above-described processing is executed. Is applied to an existing general-purpose computer so that it functions as the logo-added two-dimensional code generation device 1 according to the first embodiment and the logo-added two-dimensional code generation device 2 according to the second embodiment. Also good.
- 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 application program when the above processing is executed by sharing between the OS and the application program or by cooperation between 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
Description
まず、本発明の第1実施形態に係るロゴ付き二次元コード生成装置の構成について図面を参照しつつ説明する。
次に、本発明の第2実施形態に係るロゴ付き二次元コードについて図面を参照しつつ説明する。
2 ロゴ付き二次元コード生成装置
3 ロゴ付き二次元コード
4a、4b、4c 位置決めシンボル
10 色空間変換部
20 明度取得部
30 画像解析部
40 二次元コード生成部
50 ロゴ画像合成部
60 色空間再変換部
70 表示部
80 記憶部
85 セルDB
86 セルDB
90 操作部
100 制御部
Claims (14)
- 背景上にロゴが描かれたロゴ画像に、マトリクス状に配置されたセルの分布パターンによって所定の情報を表現する二次元コードを重ね合わせたロゴ付き二次元コードを生成するロゴ付き二次元コード生成装置であって、
Lab色空間で表される前記ロゴ画像を、重ね合わされる前記二次元コードのセルに対応して複数の領域に分割するロゴ画像分割手段と、
前記ロゴ画像分割手段によって分割された前記複数の領域のうち、予め定められた基準領域でのL値に基づいて、前記二次元コードを構成する複数種類のセルのうち第1種類のセルのL値を設定するセル設定手段と、
前記ロゴ画像に、前記セル設定手段によって前記L値が設定された前記第1種類のセルと、前記二次元コードを構成する複数種類のセルのうち前記第1種類とは異なる第2種類のセルと、を重ね合わせてロゴ付き二次元コードを生成するロゴ付き二次元コード生成手段と、
を備えることを特徴とするロゴ付き二次元コード生成装置。 - 前記基準領域でのL値が所定の閾値以上であるか否かを判別する基準L値判別手段をさらに備え、
前記セル設定手段は、前記基準L値判別手段によって前記基準領域でのL値が前記所定の閾値以上であると判別された場合、該基準領域でのL値以上の値を前記第1種類のセルのL値として設定する一方で、該基準領域でのL値が該所定の閾値未満であると判別された場合、該基準領域でのL値以下の値を該第1種類のセルのL値として設定する、
ことを特徴とする請求項1に記載のロゴ付き二次元コード生成装置。 - 前記基準L値判別手段によって前記基準領域でのL値が前記所定の閾値以上であると判別された場合、該基準領域でのL値に所定数加算する一方で、該基準領域でのL値が該所定の閾値未満であると判別された場合、該基準領域でのL値から所定数減算して演算値を算出する演算値算出手段をさらに備え、
前記セル設定手段は、前記演算値算出手段によって算出された前記演算値が所定の下限値から所定の上限値までの範囲内にあるか否かを判別する演算値判別手段を含み、
前記演算値判別手段によって前記演算値が前記所定の下限値未満であると判別された場合、該所定の下限値を前記第1種類のセルのL値として設定し、該演算値が該所定の下限値から該所定の上限値までの範囲内にあると判別された場合、該演算値を該第1種類のセルのL値として設定し、該演算値が該所定の上限値よりも大きいと判別された場合、該所定の上限値を該第1種類のセルのL値として設定する、
ことを特徴とする請求項2に記載のロゴ付き二次元コード生成装置。 - 前記ロゴ画像分割手段によって分割された各領域におけるL値に基づいて、前記ロゴ画像を解析して、該ロゴ画像から前記ロゴが描かれている領域と前記背景が描かれている領域とを抽出するロゴ画像解析手段をさらに備え、
前記セル設定手段は、前記基準L値判別手段によって前記基準領域でのL値が前記所定の閾値未満であると判別された場合、該基準領域でのL値以下の値を、前記ロゴが描かれている領域に重ね合わされる前記第1種類のセルのL値として設定する、
ことを特徴とする請求項2又は3に記載のロゴ付き二次元コード生成装置。 - 前記セル設定手段は、前記ロゴ画像解析手段によって前記ロゴが描かれていると解析された領域でのa値及びb値を、前記第1種類のセルのa値及びb値として設定する、
ことを特徴とする請求項4に記載のロゴ付き二次元コード生成装置。 - 前記セル設定手段は、前記所定の閾値以上の値を前記第2種類のセルのL値として設定する、
ことを特徴とする請求項2乃至5のいずれか1項に記載のロゴ付き二次元コード生成装置。 - 前記Lab色空間とは異なる色空間で表される前記ロゴ画像を、該Lab色空間で表される該ロゴ画像に変換する色空間変換手段と、
前記ロゴ付き二次元コード生成手段によって生成された前記Lab色空間で表される前記ロゴ画像を、前記Lab色空間とは異なる色空間で表される該ロゴ画像に再変換する色空間再変換手段と、
をさらに備えることを特徴とする請求項1乃至6のいずれか1項に記載のロゴ付き二次元コード生成装置。 - 前記第1種類及び前記第2種類のセルの大きさを縮小するセル縮小手段をさらに備える、
ことを特徴とする請求項1乃至7のいずれか1項に記載のロゴ付き二次元コード生成装置。 - 背景上にロゴが描かれたロゴ画像に、マトリクス状に配置されたセルの分布パターンによって所定の情報を表現する二次元コードを重ね合わせたロゴ付き二次元コードを生成するロゴ付き二次元コード生成方法であって、
Lab色空間で表される前記ロゴ画像を、重ね合わされる前記二次元コードのセルに対応して複数の領域に分割するロゴ画像分割ステップと、
前記ロゴ画像分割ステップによって分割された前記複数の領域のうち、予め定められた基準領域でのL値に基づいて、前記二次元コードを構成する複数種類のセルのうち第1種類のセルのL値を設定するセル設定ステップと、
前記ロゴ画像に、前記セル設定ステップによって前記L値が設定された前記第1種類のセルと、前記二次元コードを構成する複数種類のセルのうち前記第1種類とは異なる第2種類のセルと、を重ね合わせてロゴ付き二次元コードを生成するロゴ付き二次元コード生成ステップと、
を備えることを特徴とするロゴ付き二次元コード生成方法。 - 背景上にロゴが描かれたロゴ画像に、マトリクス状に配置されたセルの分布パターンによって所定の情報を表現する二次元コードを重ね合わせたロゴ付き二次元コードを生成するロゴ付き二次元コード生成装置のコンピュータに、
Lab色空間で表される前記ロゴ画像を、重ね合わされる前記二次元コードのセルに対応して複数の領域に分割するロゴ画像分割手順と、
前記ロゴ画像分割手順によって分割された前記複数の領域のうち、予め定められた基準領域でのL値に基づいて、前記二次元コードを構成する複数種類のセルのうち第1種類のセルのL値を設定するセル設定手順と、
前記ロゴ画像に、前記セル設定手順によって前記L値が設定された前記第1種類のセルと、前記二次元コードを構成する複数種類のセルのうち前記第1種類とは異なる第2種類のセルと、を重ね合わせてロゴ付き二次元コードを生成するロゴ付き二次元コード生成手順と、
を実行させるためのプログラム。 - 背景上にロゴが描かれたロゴ画像に、マトリクス状に配置されたセルの分布パターンによって所定の情報を表現する二次元コードを重ね合わせたロゴ付き二次元コードであって、
前記セルのサイズは、前記ロゴ画像のどの箇所に重ね合わされるかに応じて異なる、
ことを特徴とするロゴ付き二次元コード。 - 前記ロゴ画像のうち前記ロゴが描かれた部分に重ね合わされるセルは、前記背景上に重ね合わされる該ロゴよりもサイズが大きくなっている、
ことを特徴とする請求項11に記載のロゴ付き二次元コード。 - 前記二次元コードは、第1種類のセルと、該第1種類のセルよりも明度が高い第2種類のセルと、の分布パターンによって所定の情報を表現し、
前記ロゴ画像のうち、第1明度未満の部分には、前記第1種類のセルのみを重ね合わせる一方で、該第1明度以上の部分には、前記第1種類のセルと前記第2種類のセルとの双方を重ね合わせた、
ことを特徴とする請求項11又は12に記載のロゴ付き二次元コード。 - 前記ロゴ画像のうち、前記第1明度以上で第2明度未満の部分は、前記第1種類のセルと前記第2種類のセルとの双方を重ね合わせる一方で、該第2明度以上の部分には、前記第2種類のセルのみを重ね合わせた、
ことを特徴とする請求項13に記載のロゴ付き二次元コード。
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