WO2016113842A1 - 二次元コード生成装置、二次元コード生成方法、及びプログラム - Google Patents
二次元コード生成装置、二次元コード生成方法、及びプログラム Download PDFInfo
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- WO2016113842A1 WO2016113842A1 PCT/JP2015/050652 JP2015050652W WO2016113842A1 WO 2016113842 A1 WO2016113842 A1 WO 2016113842A1 JP 2015050652 W JP2015050652 W JP 2015050652W WO 2016113842 A1 WO2016113842 A1 WO 2016113842A1
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- dimensional code
- color
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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
- G06K19/06103—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
- 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
Definitions
- the present invention relates to a two-dimensional code generation device, a two-dimensional code generation method, and a program.
- a two-dimensional code that expresses information by a distribution pattern of a plurality of cells arranged in a vertical and horizontal (matrix form) and painted in white and black is known.
- various URLs Uniform ⁇ ⁇ ⁇ Resource Locator
- Two-dimensional codes are used in various situations in daily life because they can handle a larger amount of information than one-dimensional barcodes.
- Patent Document 1 and Patent Document 2 are obtained by superimposing a two-dimensional code that expresses information by a distribution pattern of cell dots formed by coloring a plurality of cells and a logo mark that expresses information visually.
- a two-dimensional code with a logo capable of simultaneously expressing digital information and visual information.
- Such a two-dimensional code with a logo can read digital information by a reader and has a logo mark. Therefore, the person who viewed the two-dimensional code represents what company or organization the two-dimensional code represents. It is possible to easily recognize information such as whether the user is present.
- 2D codes are displayed on various display devices and printed on various print media.
- the reading accuracy of the two-dimensional code by the reader is not stable. Specifically, not only does it take time for the reading device to read the two-dimensional code but it is difficult to read it, but there are also cases where the reading device cannot read the two-dimensional code.
- the reading accuracy of a two-dimensional code to which colors, shapes, and the like are added becomes more unstable than the reading accuracy of a two-dimensional code generated with a pattern of only two colors such as black and white.
- the reason why the reading accuracy of the two-dimensional code by the reading device becomes unstable in this way is that the standard white color varies depending on the environment in which the two-dimensional code is displayed or printed. In other words, there are many types of light sources in real life, and they are mixed. For example, even if they are the same, the color appears to change every time the light source changes. As a result, the reading accuracy of the two-dimensional code by the reading device depends on the reading environment and the display device. Therefore, it is required to read a two-dimensional code stably even in various environments.
- the present invention has been made in view of the above circumstances, and provides a two-dimensional code generation device, a two-dimensional code generation method, and a program that generate a two-dimensional code that can be stably read by a reading device in various environments. For the purpose.
- a two-dimensional code generation device includes: White point determination means for determining a white point in an environment in which a two-dimensional code is output; A threshold value for obtaining a lightness threshold value for the reading device to read each of a plurality of cells as a binary value expressed in a device-independent color space based on the white point determined by the white point determination means. Acquisition means; The information is expressed by a distribution pattern of a plurality of cell dots formed by coloring the plurality of cells with a color having a lightness equal to or higher than the threshold acquired by the threshold acquisition means and a color having a lightness less than the threshold.
- Two-dimensional code generation means for generating a dimensional code; It is characterized by providing.
- a logo image acquisition means for acquiring a logo image
- Brightness acquisition means for acquiring the brightness of each part in the logo image when the logo image acquired by the logo image acquisition means is represented in the color space
- the two-dimensional code generation means as the two-dimensional code, In the portion where the brightness acquired by the brightness acquisition means is greater than or equal to the threshold in the logo image superimposed on the cells to be colored in the color of brightness less than the threshold among the plurality of cells, the threshold is less than the threshold
- the two-dimensional code generation means includes In the portion where the brightness acquired by the brightness acquisition means is greater than or equal to the threshold in the logo image superimposed on the cells to be colored in the color of brightness less than the threshold among the plurality of cells, the threshold is less than the threshold.
- the cell dots smaller than the cell which are colored in the lightness color of In the portion where the lightness acquired by the lightness acquisition means is less than the threshold value in the logo image superimposed on the cells to be colored in the lightness color of the threshold value or higher among the plurality of cells, the threshold value or higher.
- the two-dimensional code generation means includes The cell dot smaller than the cell, colored in a lightness color less than the threshold, is superimposed on the center position of the cell, By superimposing the cell dots smaller than the cell, colored in a color having a lightness equal to or greater than the threshold, on the center position of the cell, Generating a two-dimensional code with the logo, You may do it.
- two-dimensional code generation device Further comprising two-dimensional code conversion means for converting the two-dimensional code generated by the two-dimensional code generation means into a two-dimensional code represented in a color space in the environment where the two-dimensional code is output. You may do it.
- the two-dimensional code conversion means converts the two-dimensional code into a two-dimensional code represented in a color space for print output when printing the two-dimensional code generated by the two-dimensional code generation means.
- halftone dot data generation means for generating halftone dot data representing the color of each position in the two-dimensional code converted by the two-dimensional code conversion means by the size of a halftone dot. You may do it.
- the halftone dot data generation means is either one of the plurality of cells in the two-dimensional code converted by the two-dimensional code conversion means at the center of each cell to be colored in a lightness color less than the threshold value. Generating the halftone dot data so that the halftone dots of You may do it.
- a two-dimensional code generation method includes: A white point determination step for determining a white point in an environment in which a two-dimensional code is output; A threshold value for obtaining a lightness threshold value for the reading device to read each of a plurality of cells as a binary value expressed in a device-independent color space with the white point determined in the white point determination step as a reference. An acquisition step; The information that expresses information by a distribution pattern of a plurality of cell dots formed by coloring the plurality of cells with a lightness color equal to or higher than the threshold value acquired by the threshold value acquisition step and a lightness color less than the threshold value.
- a two-dimensional code generation step for generating a dimensional code It is characterized by providing.
- a program provides: On the computer, A white point determination procedure for determining a white point in an environment in which a two-dimensional code is output; A threshold value for obtaining a lightness threshold value for the reading device to read each of a plurality of cells as a binary value expressed in a device-independent color space based on the white point determined by the white point determination procedure. Acquisition procedure; The information is expressed by a distribution pattern of a plurality of cell dots formed by coloring the plurality of cells with a color having a lightness equal to or higher than the threshold acquired by the threshold acquisition procedure and a color having a lightness less than the threshold.
- a two-dimensional code generation procedure for generating a three-dimensional code; Is executed.
- the present invention it is possible to provide a two-dimensional code generation device, a two-dimensional code generation method, and a program that generate a two-dimensional code that can be stably read by a reading device in various environments.
- the two-dimensional code generation device generates a two-dimensional code that represents information by a plurality of cells arranged in a matrix.
- the two-dimensional code is a code in a display format that can have information in two directions, for example, a vertical direction and a horizontal direction, such as a QR (Quick Response) code (registered trademark).
- the information expressed by the two-dimensional code is, for example, product or product management information, URL (Uniform Resource Locator) for accessing with a mobile phone, information used as a cash voucher or coupon.
- Fig. 1 shows an example of a two-dimensional code.
- the two-dimensional code 1 has a plurality of cells 2 arranged in a matrix.
- each of the plurality of cells 2 has a square shape having a specific size (for example, 4 mm square), and a predetermined number is arranged in each of the vertical and horizontal directions.
- the plurality of cells 2 are painted in either a color with a brightness less than a predetermined threshold (black in the example of FIG. 1) or a color with a brightness greater than or equal to the threshold (white in the example of FIG. 1).
- the threshold value is lightness corresponding to a boundary value indicating whether each cell 2 is read as “1” or “0” when the reading device reads the two-dimensional code 1.
- the reading device of the two-dimensional code 1 reads, for example, a cell 2 colored in a lightness color less than a threshold value as “1”, and reads a cell 2 colored in a lightness color above a threshold value as “0”.
- the two-dimensional code 1 binary-codes various kinds of information by using a distribution pattern of cell dots formed by coloring a plurality of cells 2 in either a lightness color less than a threshold value or a color greater than or equal to a threshold value. To express.
- Three positioning symbols 3a, 3b, and 3c are arranged at three different corners in the two-dimensional code 1.
- the three positioning symbols 3a, 3b, and 3c are standards for enabling the reader to detect the position and orientation of the two-dimensional code 1.
- Such three positioning symbols 3a, 3b, and 3c are distinguished from other cells by arranging a plurality of cells 2 so as to form a distribution pattern in which squares of a specific ratio are combined.
- FIGS. 2 to 4 show examples of two-dimensional codes with logos.
- the two-dimensional code with a logo is a two-dimensional code designed by superimposing logo marks representing figures, characters, symbols, pictures, etc. on a plurality of cells.
- the logo-added two-dimensional code 11 shown in FIG. 2 is formed by superimposing a logo mark 51 representing a humanoid mark on a plurality of cells 21 arranged in a matrix.
- the logo-added two-dimensional code 12 shown in FIG. 3 is formed by superimposing a logo mark 52 representing a heart-shaped mark on a plurality of cells 22 arranged in a matrix.
- the logo-added two-dimensional code 13 shown in FIG. 4 is formed by superimposing a logo mark 53 representing a character “3pt” on a plurality of cells 23 arranged in a matrix.
- the two-dimensional code 1 shown in FIG. 1 is basically a combination of white and black, it cannot be understood what information it represents.
- the logo-added two-dimensional codes 11, 12, and 13 shown in FIGS. 2 to 4 are overlapped with logo marks 51, 52, and 53 that visually express information on the plurality of cells 21, 22, and 23. Therefore, the code can express digital information and visual information at the same time.
- Such logo-added two-dimensional codes 11, 12, and 13 are shown in gray scale in FIGS. 2 to 4, but are preferably full-colored in order to enhance designability or prevent counterfeiting.
- the logo-attached two-dimensional code 11 has a logo mark 51 mainly composed of human-type marks for two people.
- the inside of the logo mark 51 is colored in white, that is, a color having a lightness equal to or higher than the threshold value of the reading device.
- the cell dots colored in a lightness color (black or gray) less than the threshold value are superimposed on the logo mark 51 from above.
- the reading device reads the color (white) of the logo mark 51 as it is, the correct information is read into the portion of the logo mark 51 that is superimposed on the cell 21 to be colored with a lightness of the threshold value or higher. Therefore, the cell dots are not superimposed on the logo mark 51.
- the logo-added two-dimensional code 11 includes a cell dot colored on the logo mark 51 with a lightness color (black or gray) less than a threshold value superimposed on the logo mark 51 and a lightness color value higher than the threshold value. Information is expressed by the logo mark 51 itself having (white).
- the logo-attached two-dimensional code 12 has a logo mark 52 representing a heart-shaped mark.
- the inside of the logo mark 52 is colored dark gray, that is, a color having a lightness less than the threshold value of the reading device.
- the cell dots colored with a lightness color (white) equal to or higher than the threshold are superimposed on the logo mark 52 from above.
- the correct information is read even if the reading device reads the color (dark gray) of the logo mark 52 as it is in the portion of the logo mark 52 that is superimposed on the cell 22 to be colored with a lightness color less than the threshold value. Therefore, the cell dots are not superimposed on the logo mark 52.
- the logo-added two-dimensional code 12 is formed on the logo mark 52 by cell dots colored with a lightness color (white) equal to or higher than the threshold value superimposed on the logo mark 52 and a lightness color (dark color) lower than the threshold value.
- Information is expressed by the logo mark 52 itself having a gray color).
- the two-dimensional code 13 with a logo has a logo mark 53 representing a character “3pt”.
- the character portion of “3pt” is colored in white, that is, a color having a lightness equal to or higher than the threshold value of the reading device, and the peripheral portion of the character of “3pt” is gray, that is, less than the threshold value of the reading device. It is colored in the lightness color.
- cell dots colored with a lightness color (black) less than the threshold are overlapped from above the logo mark 53.
- cell dots colored in a lightness color (white) equal to or higher than the threshold value are marked on the portion of the logo mark 53 surrounding the cell 23 to be colored with a lightness color equal to or higher than the threshold value. 53 are overlaid from above.
- the reading device reads the color (white) of the logo mark 53 as it is on the portion of the white character portion in the logo mark 53 that is superimposed on the cell 23 to be colored in a color having a lightness equal to or higher than the threshold value. Since correct information can be read, the cell dots are not superimposed on the logo mark 53.
- the reading device reads the color (gray) of the logo mark 53 as it is into the portion of the logo mark 53 surrounding the cell 23 to be colored with a lightness color less than the threshold, the gray mark portion 53 Since correct information can be read, the cell dots are not superimposed on the logo mark 53.
- the logo-added two-dimensional code 13 includes a cell dot colored with a lightness color (white) equal to or higher than a threshold value superimposed on the logo mark 53 on the logo mark 53 and a threshold value superimposed on the logo mark 53.
- the information is expressed by 53 itself.
- the shape of the cell dots superimposed on the logo marks 51, 52, and 53 is not a square shape that is a cell shape, but a circular shape. It is.
- the center of the cell dot circle coincides with the center of the square cell, and the area of the cell dot is smaller than the area of the cell.
- the portions other than the circular cell dots in the cell are colored in the colors of the logo marks 51, 52, and 53.
- the reading device reads the central part of each cell when reading a two-dimensional code such as a two-dimensional code with a logo 11, 12, 13 or the like. Therefore, as described in Patent Document 1, the colored area of the cell dots colored with a lightness color less than the threshold is smaller than the cell area, and the cell dots have a shape other than a square. However, the reading device reads a value close to “1” to some extent (a value recognized as black). Similarly, even if the colored area of the cell dots colored with a lightness color equal to or greater than the threshold value is smaller than the cell area and the cell dots are in a shape other than a square, the reading device has a value close to “0” to some extent. Read (value recognized as white).
- the cell dots are formed around the center portion of each cell, there is no problem in reading the two-dimensional code by the reading device even if the cell dot area is smaller than the cell area. Specifically, when the cell dot is formed around the center portion of each cell, if the colored area of the cell dot occupies 3% (more preferably 20%) or more of the cell area, the two-dimensional code is The reading device can be easily read.
- Fig. 5 shows examples of cell dots of various shapes.
- the cell dots in the logo-added two-dimensional codes 11, 12, and 13 shown in FIGS. 2 to 4 correspond to the circular cell dots 6a provided in the square cells 2a shown in FIG.
- various types of cell dots 6b to 6f such as star shapes and heart shapes provided in the cells 2b to 2f according to the design of the logo image superimposed on the two-dimensional code.
- Cell dots with various shapes can be used.
- the reading device can read information from distribution patterns of cell dots 6a to 6f having various shapes such as a circle, a polygon, and a heart shape as in the example of FIG.
- the area of the cell dot is made smaller than the area of the cell, and the part other than the cell dot in the cell.
- the two-dimensional code generator for generating the two-dimensional code 1 and the logo-added two-dimensional codes 11, 12, and 13 as described above is configured as shown in FIG.
- the two-dimensional code generation device 100 includes a display unit 101, a storage unit 102, an operation unit 103, a communication unit 104, and a control unit 105. These units are connected to each other via a bus.
- the two-dimensional code generation device 100 is realized by a general-purpose computer, for example.
- the display unit 101 is configured by an LCD (Liquid Crystal Display) or the like, for example.
- the display unit 101 displays various images under the control of the control unit 105.
- the display unit 101 displays a two-dimensional code generated by the two-dimensional code generation device 100, a logo image superimposed on the two-dimensional code, and the like.
- the storage unit 102 is configured by a nonvolatile memory such as a hard disk drive or a flash memory.
- the storage unit 102 stores various information and various programs necessary for processing executed by the two-dimensional code generation device 100.
- the operation unit 103 is operated by a user, and includes, for example, a keyboard and a mouse. For example, the user operates the operation unit 103 to input an instruction for generating a two-dimensional code.
- the communication unit 104 includes, for example, a wireless communication device and is connected to a network.
- the communication unit 104 receives data necessary for generating a two-dimensional code by the two-dimensional code generation device 100 from an external device under the control of the control unit 105, and generates the two-dimensional code generated by the two-dimensional code generation device 100. Send the code to an external device.
- the control unit 105 includes, for example, a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like.
- the CPU controls the operation of each unit of the two-dimensional code generation device 100 by appropriately executing various programs stored in the ROM, the storage unit 102, and the like using the RAM as a work memory.
- the two-dimensional code generation device 100 functionally includes a white point determination unit 111, a threshold acquisition unit 112, a two-dimensional code generation unit 113, a logo image acquisition unit 114, and brightness acquisition.
- Unit 115 The control unit 105 functions as these units through the cooperation of the CPU, ROM, RAM, and the like.
- the white point determination unit 111 determines a white point in an environment where the two-dimensional code generated by the two-dimensional code generation device 100 is output.
- White is a color that is the basis for color creation. Therefore, the data to be output is output regardless of whether the two-dimensional code generated by the two-dimensional code generation device 100 is displayed on a monitor such as a PC (Personal Computer) or printed out by a printer. The color of (two-dimensional code) is created with white as a reference.
- a monitor such as a PC (Personal Computer) or printed out by a printer.
- the color of (two-dimensional code) is created with white as a reference.
- the white color on the monitor is expressed by all the light sources of RGB (Red, Green, Blue) emitting at the same rate of 100%.
- the other colors are expressed by adjusting the emission intensity of the light sources of RGB colors between 0% and 100%. Therefore, when the white color varies depending on the monitor, each color other than the white color also varies depending on the monitor. This is a cause that the color desired by the user cannot be obtained.
- the reference white color varies depending on the material of the recording medium such as paper or film that is the output destination of the two-dimensional code.
- the recording medium that is the output destination of the two-dimensional code is paper
- the paper colors are all different for copy paper, cardboard, newspaper, magazines, and the like. Therefore, in order to print and output a two-dimensional code with a color desired by the user, it is necessary to appropriately set a white reference according to the material of the recording medium.
- the white point determination unit 111 determines an appropriate white point according to the device to which the generated two-dimensional code is to be output. Thereby, the white balance is adjusted.
- the white point determination unit 111 determines a color temperature as a white point in an environment where a two-dimensional code is output. For example, the white point determination unit 111 determines the color temperature input by the user via the operation unit 103 as the white point. Alternatively, the white point determination unit 111 acquires information indicating an environment in which a two-dimensional code is output (such as an OS for display output or a recording medium type for print output), and the environment is determined from the acquired information. It is also possible to determine a color temperature suitable for the white point as the white point.
- the color temperature is an index for representing a hue used in a device that handles colors such as a monitor and a printer.
- the unit of color temperature is Kelvin (K). For example, when an image is displayed on a monitor, the entire monitor is displayed with a bluish color when the color temperature is high, and the entire monitor is displayed with a reddish color when the color temperature is low. That is, the white color displayed on a monitor with a high color temperature is different from the white color displayed on a monitor with a low color temperature.
- the color temperature called page white is 5000K (D50).
- the color temperature of the monitor is set to 6500K (D65), 9300 (D93), or the like by default according to the operating system (OS) used. Since the monitor deteriorates with time, the actual color temperature may not match the set value. In this case, the color temperature of the monitor may be measured using a measuring machine or the like. Thereby, the white point determination unit 111 can determine the white point with high accuracy.
- the threshold value acquisition unit 112 is a lightness threshold value for the two-dimensional code reader to read each of a plurality of cells as a binary value expressed in a color space with the white point determined by the white point determination unit 111 as a reference. To get.
- the threshold acquisition unit 112 employs a device-independent color space that supports a color temperature of 6500K (D65). Specifically, the threshold acquisition unit 112 adopts a color space based on sRGB (Standard RGB) as a device-independent color space when the color temperature is 6500 K (D65). sRGB is a standard adopted to reproduce colors correctly regardless of device differences in general monitors, printers, digital cameras, and the like. The threshold acquisition unit 112 determines a threshold for the two-dimensional code reader to read each of the plurality of cells in binary in the color region in the adopted sRGB color space.
- sRGB Standard RGB
- the two-dimensional code reader determines whether the cell is read as “1” or “0” based on lightness information. That is, even if the color is other than black, if the color is lighter than the threshold (that is, a relatively dark color), the reading device reads the cell as “1”. Similarly, even if the color is other than white, if the color is lighter than the threshold (that is, a relatively bright color), the reading device reads the cell as “0”.
- the lightness (L value) is shown in the horizontal direction, and the number of gradations corresponding to the lightness in the output device (monitor, printer, etc.) is shown in the vertical direction.
- the lightness from 0 to L1 which is the maximum lightness (lightness corresponding to white)
- the maximum brightness L1 is determined by the white point (color temperature) in the first output environment.
- the reading device When the lightness corresponding to the threshold value of the reading device is expressed as T, the reading device reads “1” in the first output environment, and the cells colored with the lightness values from 0 to T are read from T to L1. A cell colored in the lightness color is read as “0”.
- the number of gradations corresponding to the lightness of the threshold value T is represented as S1.
- the threshold acquisition unit 112 uses the gradation number S1 as a threshold of the reading device expressed in a device-independent color space with the white point determined by the white point determination unit 111 as a reference. get.
- the maximum brightness is as shown in FIG. 8 according to the white point (color temperature) in the second output environment.
- L1 is changed to L2.
- the brightness corresponding to the threshold value of the reading device does not change from T.
- the reading device reads a cell colored in a lightness color from 0 to T as “1”, and reads a cell colored in a lightness color from T to L2 as “0”. read. That is, by changing the maximum brightness from L1 to L2, the ratio of the brightness range read as “0” and the brightness range read as “1” is changed from the ratio in the first output environment.
- the threshold value acquisition unit 112 uses the gradation number S2 as a threshold value of the reading device expressed in a device-independent color space with the white point determined by the white point determination unit 111 as a reference. get.
- the relative value of the lightness T corresponding to the threshold value with respect to the white lightness varies depending on the output environment. Therefore, even if the same two-dimensional code is used, especially when a logo mark is added to the two-dimensional code, it will be accompanied by various colors, so whether the lightness of the cell is below the threshold or above the threshold depending on the output environment May change, and the reader may not be able to read the two-dimensional code correctly.
- the two-dimensional code generation unit 113 is formed by coloring a plurality of cells with a lightness color that is equal to or greater than the threshold value and a lightness color that is less than the threshold value, based on the threshold value acquired by the threshold value acquisition unit 112. A two-dimensional code expressing information by the distribution pattern of the plurality of cell dots is generated.
- the two-dimensional code generation unit 113 acquires input data such as numbers, characters, symbols, and the like that are to be generated as a two-dimensional code.
- the two-dimensional code generation unit 113 acquires input data, for example, by receiving an input instruction from a user via the operation unit 103 or by receiving from an external device via the communication unit 104. Then, the two-dimensional code generation unit 113 generates a distribution pattern corresponding to the acquired input data, and colors a plurality of cells with a lightness color equal to or higher than the threshold value and a lightness color lower than the threshold value according to the generated distribution pattern. Thus, a two-dimensional code expressing the acquired input data as information is generated.
- the two-dimensional code generation unit 113 can use a color other than black (a relatively dark color) as long as the color has a lightness less than the threshold as long as the color has a lightness less than the threshold. Similarly, the two-dimensional code generation unit 113 can use a color other than white (relatively bright color) as long as the color of lightness is equal to or higher than the threshold, as long as the color is lighter than the threshold.
- the two-dimensional code generation unit 113 determines the color for coloring the cell by determining whether it is less than the threshold value or more than the threshold value in the adopted color space. Therefore, depending on the output environment, the lightness of the cell is less than the threshold value or more than the threshold value. It is possible to prevent the reading apparatus from being changed and the reading apparatus from reading the two-dimensional code correctly. That is, a two-dimensional code that can be read correctly can be generated according to the environment in which the two-dimensional code is output.
- the logo image acquisition unit 114 acquires a logo image.
- a logo image refers to image data of a logo mark attached to a two-dimensional code when the two-dimensional code is generated as a two-dimensional code with a logo.
- the logo image acquisition unit 114 acquires the logo image, for example, by receiving an input instruction from the user via the operation unit 103 or by receiving it from an external device via the communication unit 104. Alternatively, when a logo image is stored in the storage unit 102 in advance, the logo image acquisition unit 114 acquires the logo image from the storage unit 102.
- the brightness acquisition unit 115 acquires the brightness of each part in the logo image when the logo image acquired by the logo image acquisition unit 114 is represented in the color space adopted in the threshold acquisition unit 112.
- the brightness acquisition unit 115 displays the acquired logo image in a CMYK (Cyan, Magenta, Yellow, Black) color space, or an RGB color space other than the sRGB color space (wide-range RGB color).
- CMYK Cyan, Magenta, Yellow, Black
- RGB color space wide-range RGB color
- the acquired logo image is converted into a logo image represented by an sRGB color space. This is because the CMYK color space that is generally used for printing and the RGB color space that is used for monitor display are device-dependent color spaces with different color settings for each device, so the brightness is obtained directly. This is because it cannot be done.
- the brightness acquisition unit 115 converts the pixel value of the logo image to a value in the sRGB color space, which is a device-independent color space (absolute color space). Convert.
- the color space conversion is performed using a profile that defines the characteristics of the color space for each device, such as a profile defined by the ICC, according to a color management system compliant with ICC (International Color Consortium).
- the brightness acquisition unit 115 converts the logo image represented in the sRGB color space into a logo image represented in the Lab color space.
- the Lab color space is a color space that expresses a color by an L value indicating lightness and an a value and a b value indicating color difference information.
- the brightness acquisition unit 115 acquires the brightness of each part in the logo image by acquiring the L value of each part in the logo image represented in the Lab color space.
- the two-dimensional code generation unit 113 generates a two-dimensional code with a logo by superimposing the logo image acquired by the logo image acquisition unit 114 on a plurality of cells constituting the two-dimensional code.
- the brightness of each part in the logo image acquired by the brightness acquisition unit 115 is compared with the threshold of the reading device acquired by the threshold acquisition unit 112. Then, in a portion of the logo image that is overlaid with a cell to be colored with a lightness color less than the threshold value among the plurality of cells, the brightness value acquired by the lightness acquisition unit 115 is greater than or equal to the threshold value. Overlapping colored cell dots. Further, in a portion of the logo image that is superimposed on a cell to be colored in a color having a lightness equal to or higher than the threshold value among the plurality of cells, a portion of the logo image having a lightness acquired by the lightness acquisition unit 115 is less than the threshold value. Overlapping colored cell dots.
- the lightness acquisition unit 115 generates the two-dimensional code with logo 11, 12, 13 on which the logo marks 51, 52, 53 are superimposed as shown in FIGS.
- the two-dimensional code conversion unit 116 converts the two-dimensional code generated by the two-dimensional code generation unit 113 into a two-dimensional code expressed in a color space in the environment where the two-dimensional code is output. That is, since the two-dimensional code generated by the two-dimensional code generation unit 113 is generated in the Lab color space, the two-dimensional code conversion unit 116 converts the two-dimensional code generated in the Lab color space into two Conversion (color separation) into a two-dimensional code represented in a color space in a device that outputs a dimensional code.
- the two-dimensional code conversion unit 116 displays the generated two-dimensional code in a color space for display output (for example, an RGB color space). ). Then, the display data including the converted two-dimensional code is transmitted to a monitor that displays the two-dimensional code. On the other hand, when the generated two-dimensional code is printed out by a printer, the two-dimensional code conversion unit 116 displays the generated two-dimensional code in a color space for printout (for example, CMYK color space). Convert to dimension code.
- the halftone dot data generation unit 117 expresses the color of each position in the two-dimensional code converted by the two-dimensional code conversion unit 116 by the size of the halftone dot when the generated two-dimensional code is printed out by a printer. Generate halftone dot data.
- a print image is recorded on a recording medium by arranging small dot patterns called halftone dots on the recording medium.
- halftone dots By adjusting the size of the halftone dots, the lightness and darkness of the color and the light and shade are expressed.
- a desired color is reproduced by printing halftone dots of cyan, magenta, yellow, and black at an appropriate density.
- halftone dots are generated by shifting the screen angle of each color so that moire is not noticeable.
- the halftone dot data generation unit 117 generates halftone dot data that expresses the color of each cell and logo image by using such a halftone dot, and transmits the generated halftone dot data to the printer.
- FIG. 9 shows an example of the halftone dot 7 generated on the cell 20.
- the halftone dot data generation unit 117 expresses a circular cell dot 60 to be colored in a lightness color below the threshold in the cell 20 by hitting a large number of small dots as the halftone dot 7.
- the halftone dot data generation unit 117 does not apply the halftone dot 7 to the area that should be kept white like the area other than the cell dot 60 in the cell 20.
- only one color (black) halftone dot 7 is displayed for easy understanding.
- four color halftone dots of cyan, magenta, yellow, and black are displayed on the cell 20. Is generated.
- the size ratio between the cell 20 and the halftone dot 7 in FIG. 9 does not necessarily match the actual size ratio.
- the reading device reads the central portion of each cell and determines whether it is “0” or “1”.
- the cell dot 60 itself is not only located at the center of the cell 20, but is One of the halftone dots 7 (halftone dot 70 shown in FIG. 9) located in the center of the cell 20 is less than any halftone dot 7 located in the center of the cell 20.
- the reading accuracy of the cell 20 is improved.
- the halftone data generation unit 117 selects one of the plurality of cells in the two-dimensional code converted by the two-dimensional code conversion unit 116 at the center of each cell to be colored to a lightness color less than the threshold value.
- Halftone dot data is generated so that the halftone dot is located. Note that for cells that should be colored with a lightness color above the threshold (white, etc.), it is considered that there is little effect on the reading accuracy of the reading device, so a halftone dot may be located at the center of the cell. The halftone dot does not have to be located at the center of.
- the two-dimensional code generation device 100 starts the two-dimensional code generation process shown in FIG.
- the control unit 105 When the two-dimensional code generation process is started, the control unit 105 functions as the white point determination unit 111 to determine the white point (step S1). That is, the control unit 105 determines a white point (color temperature) that is a reference for color creation in an environment where a two-dimensional code is output. For example, the control unit 105 determines a color temperature of 6500K (D65) as the white point.
- a white point color temperature
- D65 6500K
- the control unit 105 When the white point is acquired, the control unit 105 functions as the threshold acquisition unit 112, and acquires the threshold of the reading device expressed in a device-independent color space with the determined white point as a reference (step S2). ). For example, when the color temperature of 6500K (D65) is determined as the white point, the control unit 105 adopts the sRGB color space as the color space based on this color temperature. Then, the control unit 105 acquires, for example, a value corresponding to the gradation number S1 or S2 illustrated in FIG. 8 as the threshold value of the reading device expressed in the sRGB space.
- the control unit 105 functions as the logo image acquisition unit 114 and acquires a logo image (step S3). That is, the control unit 105 acquires a logo image, which is image data of a logo mark attached to the generated two-dimensional code, via the operation unit 103 or the communication unit 104.
- the control unit 105 Upon acquiring the logo image, the control unit 105 functions as the lightness acquisition unit 115, performs Lab conversion on the acquired logo image (step S4), and acquires the lightness of each part in the logo image (step S5). That is, the control unit 105 converts the acquired logo image into a logo image expressed in the sRGB color space as a device-independent color space, and further converts into a logo image expressed in the Lab color space. And the control part 105 acquires the lightness of each part in a logo image by acquiring the L value obtained by converting a logo image into Lab color space.
- the control unit 105 When the brightness of the logo image is acquired, the control unit 105 functions as the two-dimensional code generation unit 113, synthesizes the logo image, and generates a two-dimensional code with a logo (step S6).
- the control unit 105 generates logo-added two-dimensional codes 11, 12, and 13 on which logo marks 51, 52, and 53 are superimposed as shown in FIGS.
- the control unit 105 determines the output environment of the generated two-dimensional code with logo (step S7).
- the control unit 105 determines whether the generated logo-added two-dimensional code is specifically displayed on a monitor or printed out by a printer.
- the output environment is instructed by the user via the operation unit 103, for example.
- the control unit 105 When the generated two-dimensional code with logo is displayed on the monitor (step S7; monitor output), the control unit 105 functions as the two-dimensional code conversion unit 116 and performs RGB conversion on the generated two-dimensional code with logo (Ste S8). That is, the control unit 105 converts the logo-added two-dimensional code generated in the Lab color space into a logo-added two-dimensional code represented in the RGB color space as a monitor output color space.
- step S7 when the generated two-dimensional code with logo is printed out by the printer in step S7 (step S7; print output), the control unit 105 functions as the two-dimensional code conversion unit 116 to generate the generated two-dimensional code with logo.
- the code is CMYK converted (step S9). That is, the control unit 105 converts the logo-added two-dimensional code generated in the Lab color space into a logo-added two-dimensional code represented in the CMYK color space as a print output color space.
- the control unit 105 functions as the halftone dot data generation unit 117, and generates halftone dot data from the two-dimensional code with logo after the CMYK conversion (step S10). At this time, in order to improve the reading accuracy by the reading device, the control unit 105, as shown in FIG. Halftone dot data is generated so that any halftone dot is positioned at the center of the cell.
- the two-dimensional code generation processing shown in the flowchart of FIG. 10 ends.
- the generated logo-added two-dimensional code is displayed on a desired monitor or printed out from a desired printer.
- the two-dimensional code generation device 100 determines a white point in an environment in which a two-dimensional code is output, and in a color space that does not depend on a device based on the determined white point.
- the brightness of the logo image and the threshold value of the reading device are acquired.
- the brightness of the logo image is compared with the threshold value of the reading device, and the logo image is synthesized with a plurality of cells constituting the two-dimensional code, thereby generating the logo-added two-dimensional code.
- the two-dimensional code generation device 100 can generate a two-dimensional code that can be stably read by the reading device in various environments.
- the two-dimensional code generation device 100 according to the present embodiment does not require a logo design change in order to stabilize the reading accuracy, and is superimposed on the logo. Since the area of the cell dots to be formed can be reduced, it is possible to suppress the deterioration of the design of the two-dimensional code. Therefore, it is possible to generate a two-dimensional code with a logo that can be stably read without depending on a device or the like on which the two-dimensional code is presented, and also has design properties (design properties).
- this invention is not limited to the said embodiment, A various deformation
- the two-dimensional code generation apparatus is not limited to the 6500K and sRGB color spaces, and can execute the above-described two-dimensional code generation processing using other color temperatures and other color spaces.
- the color temperature in the output environment of the two-dimensional code is 9300K (D93)
- the two-dimensional code generation device does not depend on a device that uses 9300K as the color temperature and supports 9300K as the color space.
- a color space can be used.
- the two-dimensional code generation device 100 generates a two-dimensional code with a logo with a logo attached thereto.
- the two-dimensional code generation apparatus according to the present invention may generate a two-dimensional code without a logo such as the two-dimensional code 1 shown in FIG. That is, the two-dimensional code generation apparatus according to the present invention may be a simpler apparatus that does not have the functions of the logo image acquisition unit 114 and the brightness acquisition unit 115. Since the two-dimensional code without the logo does not use as many colors as the two-dimensional code with the logo, the reading accuracy is relatively stable. However, even with a two-dimensional code without a logo, the reading accuracy may be reduced depending on the environment. Therefore, according to such a two-dimensional code generation device, a two-dimensional code that can be stably read can be generated with a simpler configuration.
- the two-dimensional code with a logo is described in gray scale for easy understanding.
- the logo-added two-dimensional code generated by the two-dimensional code generation apparatus according to the present invention may be expressed in full color.
- the two-dimensional code with a logo is expressed in full color, for example, whether the brightness of the logo mark and the cell is greater than or less than the threshold, depending on whether the average value of each RGB value is greater than or equal to the threshold. Can do.
- the two-dimensional code is described as a QR code (registered trademark).
- the present invention is not limited to this, and the two-dimensional code includes a data matrix, an aztec code, and a code.
- Other matrix type two-dimensional codes such as one, array tag, box graphic code, maxi code, peri code, soft strip, CP code, carla code, ultra code, etc. may be used.
- a stack type two-dimensional code in which one-dimensional codes 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 the ROM, the storage unit 102, or the like.
- the present invention is not limited to this, and is for executing the above-described processing.
- This program may be applied to an existing general-purpose computer to function as the two-dimensional code generation device 100 according to the above embodiment.
- Such a program can be provided by any method, for example, stored in a computer-readable non-transitory recording medium (flexible disk, CD (Compact Disc) -ROM, DVD (Digital Versatile Disc) -ROM, etc.).
- the program may be distributed, or may be provided by storing the program in a storage on a network such as the Internet and 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.
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Abstract
Description
二次元コードが出力される環境における白色点を決定する白色点決定手段と、
前記白色点決定手段によって決定された前記白色点を基準とする、デバイスに依存しない色空間で表された、読取装置が複数のセルのそれぞれを2値で読み取るための明度の閾値を取得する閾値取得手段と、
前記閾値取得手段によって取得された前記閾値以上の明度の色と前記閾値未満の明度の色とで前記複数のセルを着色して形成された複数のセルドットの分布パターンによって情報を表現する前記二次元コードを生成する二次元コード生成手段と、
を備えることを特徴とする。
ロゴ画像を取得するロゴ画像取得手段と、
前記ロゴ画像取得手段によって取得された前記ロゴ画像が前記色空間で表された場合における、前記ロゴ画像内の各部分の明度を取得する明度取得手段と、
をさらに備え、
前記二次元コード生成手段は、前記二次元コードとして、
前記複数のセルのうち前記閾値未満の明度の色に着色されるべきセルに重ね合わされた、前記ロゴ画像のうち前記明度取得手段によって取得された明度が前記閾値以上である部分に、前記閾値未満の明度の色に着色されたセルドットを重ね合わせ、
前記複数のセルのうち前記閾値以上の明度の色に着色されるべきセルに重ね合わされた、前記ロゴ画像のうち前記明度取得手段によって取得された明度が前記閾値未満である部分に、前記閾値以上の明度の色に着色されたセルドットを重ね合わせることにより、
前記ロゴ画像が重ね合わされたロゴ付き二次元コードを生成する、
ようにしてもよい。
前記二次元コード生成手段は、
前記複数のセルのうち前記閾値未満の明度の色に着色されるべきセルに重ね合わされた、前記ロゴ画像のうち前記明度取得手段によって取得された明度が前記閾値以上である部分に、前記閾値未満の明度の色に着色された、該セルより小さい前記セルドットを重ね合わせ、
前記複数のセルのうち前記閾値以上の明度の色に着色されるべきセルに重ね合わされた、前記ロゴ画像のうち前記明度取得手段によって取得された明度が前記閾値未満である部分に、前記閾値以上の明度の色に着色された、該セルより小さい前記セルドットを重ね合わせることにより、
前記ロゴ付き二次元コードを生成する、
ようにしてもよい。
前記二次元コード生成手段は、
前記閾値未満の明度の色に着色された、前記セルより小さい前記セルドットを、該セルの中心の位置に重ね合わせ、
前記閾値以上の明度の色に着色された、前記セルより小さい前記セルドットを、該セルの中心の位置に重ね合わせることにより、
前記ロゴ付き二次元コードを生成する、
ようにしてもよい。
前記二次元コード生成手段によって生成された前記二次元コードを、前記二次元コードが出力される前記環境における色空間で表される二次元コードに変換する二次元コード変換手段をさらに備える、
ようにしてもよい。
前記二次元コード変換手段は、前記二次元コード生成手段によって生成された前記二次元コードを印刷出力する場合、前記二次元コードを、印刷出力用の色空間で表される二次元コードに変換し、
前記二次元コード変換手段によって変換された前記二次元コード内の各位置の色を網点の大きさによって表現した網点データを生成する網点データ生成手段をさらに備える、
ようにしてもよい。
前記網点データ生成手段は、前記二次元コード変換手段によって変換された前記二次元コード内の前記複数のセルのうち、前記閾値未満の明度の色に着色すべき各セルの中心に、いずれかの網点が位置するように、前記網点データを生成する、
ようにしてもよい。
二次元コードが出力される環境における白色点を決定する白色点決定ステップと、
前記白色点決定ステップによって決定された前記白色点を基準とする、デバイスに依存しない色空間で表された、読取装置が複数のセルのそれぞれを2値で読み取るための明度の閾値を取得する閾値取得ステップと、
前記閾値取得ステップによって取得された前記閾値以上の明度の色と前記閾値未満の明度の色とで前記複数のセルを着色して形成された複数のセルドットの分布パターンによって情報を表現する前記二次元コードを生成する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。
コンピュータに、
二次元コードが出力される環境における白色点を決定する白色点決定手順と、
前記白色点決定手順によって決定された前記白色点を基準とする、デバイスに依存しない色空間で表された、読取装置が複数のセルのそれぞれを2値で読み取るための明度の閾値を取得する閾値取得手順と、
前記閾値取得手順によって取得された前記閾値以上の明度の色と前記閾値未満の明度の色とで前記複数のセルを着色して形成された複数のセルドットの分布パターンによって情報を表現する前記二次元コードを生成する二次元コード生成手順と、
を実行させる。
図2に示すロゴ付き二次元コード11は、マトリクス状に配置された複数のセル21上に、人型のマークを表すロゴマーク51が重ね合わされて形成されている。
図3に示すロゴ付き二次元コード12は、マトリクス状に配置された複数のセル22上に、ハート型のマークを表すロゴマーク52が重ね合わされて形成されている。
図4に示すロゴ付き二次元コード13は、マトリクス状に配置された複数のセル23上に、「3pt」との文字を表すロゴマーク53が重ね合わされて形成されている。
2、20、21、22、23 セル
2a、2b、2c、2d、2e、2f セル
3a、3b、3c 位置決めシンボル
11、12、13 ロゴ付き二次元コード
51、52、53 ロゴマーク
6a、6b、6c、6d、6e、6f、60 セルドット
7、70 網点
100 二次元コード生成装置
101 表示部
102 記憶部
103 操作部
104 通信部
105 制御部
111 白色点決定部
112 閾値取得部
113 二次元コード生成部
114 ロゴ画像取得部
115 明度取得部
116 二次元コード変換部
117 網点データ生成部
Claims (9)
- 二次元コードが出力される環境における白色点を決定する白色点決定手段と、
前記白色点決定手段によって決定された前記白色点を基準とする、デバイスに依存しない色空間で表された、読取装置が複数のセルのそれぞれを2値で読み取るための明度の閾値を取得する閾値取得手段と、
前記閾値取得手段によって取得された前記閾値以上の明度の色と前記閾値未満の明度の色とで前記複数のセルを着色して形成された複数のセルドットの分布パターンによって情報を表現する前記二次元コードを生成する二次元コード生成手段と、
を備えることを特徴とする二次元コード生成装置。 - ロゴ画像を取得するロゴ画像取得手段と、
前記ロゴ画像取得手段によって取得された前記ロゴ画像が前記色空間で表された場合における、前記ロゴ画像内の各部分の明度を取得する明度取得手段と、
をさらに備え、
前記二次元コード生成手段は、前記二次元コードとして、
前記複数のセルのうち前記閾値未満の明度の色に着色されるべきセルに重ね合わされた、前記ロゴ画像のうち前記明度取得手段によって取得された明度が前記閾値以上である部分に、前記閾値未満の明度の色に着色されたセルドットを重ね合わせ、
前記複数のセルのうち前記閾値以上の明度の色に着色されるべきセルに重ね合わされた、前記ロゴ画像のうち前記明度取得手段によって取得された明度が前記閾値未満である部分に、前記閾値以上の明度の色に着色されたセルドットを重ね合わせることにより、
前記ロゴ画像が重ね合わされたロゴ付き二次元コードを生成する、
ことを特徴とする請求項1に記載の二次元コード生成装置。 - 前記二次元コード生成手段は、
前記複数のセルのうち前記閾値未満の明度の色に着色されるべきセルに重ね合わされた、前記ロゴ画像のうち前記明度取得手段によって取得された明度が前記閾値以上である部分に、前記閾値未満の明度の色に着色された、該セルより小さい前記セルドットを重ね合わせ、
前記複数のセルのうち前記閾値以上の明度の色に着色されるべきセルに重ね合わされた、前記ロゴ画像のうち前記明度取得手段によって取得された明度が前記閾値未満である部分に、前記閾値以上の明度の色に着色された、該セルより小さい前記セルドットを重ね合わせることにより、
前記ロゴ付き二次元コードを生成する、
ことを特徴とする請求項2に記載の二次元コード生成装置。 - 前記二次元コード生成手段は、
前記閾値未満の明度の色に着色された、前記セルより小さい前記セルドットを、該セルの中心の位置に重ね合わせ、
前記閾値以上の明度の色に着色された、前記セルより小さい前記セルドットを、該セルの中心の位置に重ね合わせることにより、
前記ロゴ付き二次元コードを生成する、
ことを特徴とする請求項3に記載の二次元コード生成装置。 - 前記二次元コード生成手段によって生成された前記二次元コードを、前記二次元コードが出力される前記環境における色空間で表される二次元コードに変換する二次元コード変換手段をさらに備える、
ことを特徴とする請求項1に記載の二次元コード生成装置。 - 前記二次元コード変換手段は、前記二次元コード生成手段によって生成された前記二次元コードを印刷出力する場合、前記二次元コードを、印刷出力用の色空間で表される二次元コードに変換し、
前記二次元コード変換手段によって変換された前記二次元コード内の各位置の色を網点の大きさによって表現した網点データを生成する網点データ生成手段をさらに備える、
ことを特徴とする請求項5に記載の二次元コード生成装置。 - 前記網点データ生成手段は、前記二次元コード変換手段によって変換された前記二次元コード内の前記複数のセルのうち、前記閾値未満の明度の色に着色すべき各セルの中心に、いずれかの網点が位置するように、前記網点データを生成する、
ことを特徴とする請求項6に記載の二次元コード生成装置。 - 二次元コードが出力される環境における白色点を決定する白色点決定ステップと、
前記白色点決定ステップによって決定された前記白色点を基準とする、デバイスに依存しない色空間で表された、読取装置が複数のセルのそれぞれを2値で読み取るための明度の閾値を取得する閾値取得ステップと、
前記閾値取得ステップによって取得された前記閾値以上の明度の色と前記閾値未満の明度の色とで前記複数のセルを着色して形成された複数のセルドットの分布パターンによって情報を表現する前記二次元コードを生成する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二次元コード生成方法。 - コンピュータに、
二次元コードが出力される環境における白色点を決定する白色点決定手順と、
前記白色点決定手順によって決定された前記白色点を基準とする、デバイスに依存しない色空間で表された、読取装置が複数のセルのそれぞれを2値で読み取るための明度の閾値を取得する閾値取得手順と、
前記閾値取得手順によって取得された前記閾値以上の明度の色と前記閾値未満の明度の色とで前記複数のセルを着色して形成された複数のセルドットの分布パターンによって情報を表現する前記二次元コードを生成する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。
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