JP2017083915A - Two-dimensional code, two-dimensional code system, two-dimensional code imaging terminal and information processing method using two-dimensional code - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a two-dimensional code of which the designability is prevented from being impaired, while maintaining fixed decoding accuracy and a high-order security level even under an inferior environment, and a two-dimensional code system.SOLUTION: A two-dimensional code and a system are provided. The two-dimensional code comprises: a boundary defining part surrounding a target region of the two-dimensional code with a continuous frame line; a code region part consisting of a color code that is formed by arraying cells within the boundary defining part in such a manner that the cells can be decoded into first decoding data; and an image display part which is any other region than the code region part within the boundary defining part, is colored identifiably from the frame line as a background color and displays an image picture that can be identified by feature amount data for performing authentication processing. The color code is converted into a binary code of two black and white gradations in the case where an image is converted into a black-and-white multi-gradation image and captured, and can be decoded into second decoding data.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a two-dimensional code, a two-dimensional code system, a two-dimensional code imaging terminal, and an information processing method using the two-dimensional code, and more particularly to a two-dimensional code having a color code.

  In recent years, the use range of so-called two-dimensional codes has been expanded, and the demand for such codes has increased. Along with the increase in demand, there is an increasing demand for an increase in the amount of data that can be encoded with a two-dimensional code. Therefore, a one-dimensional barcode or two-dimensional code (hereinafter collectively referred to as “barcode or the like”) displayed in black and white binary such as a barcode does not satisfy the demand from the viewpoint of the data amount. As an alternative, Radio Frequency Identification (RFID) is attracting attention. However, because of the high cost and the high dependency of specific hardware on data reading, There is a disadvantage that it is not suitable for distributing a large amount of articles, in an environment where radio wave interference occurs, or in an environment where the influence of a magnetic field is strong.

In order to solve the above problems, a color code is attracting attention. Since the color code can use colors other than black and white, the number of bits that can be expressed in the same code area is increased compared to a bar code or the like, and an improvement in data recording density can be expected. Further, since the color code can be displayed by printing on a paper medium or the like as in the case of a bar code or the like, there is no problem like the RFID.

  Conventionally, as this type of color code, for example, a code image having a data area in which data cells are displayed that are encoded with different colors or shades corresponding to target data including a network address is displayed on a television screen. And a step of acquiring the image including the code image displayed on the television screen by the receiver's image acquisition device, and from the acquired image by the receiver's computer, the data area Recognizing the color and shade of the data area, decoding the target data from the recognized color and shade, and extracting the network address contained in the target data, and the extracted network address Connecting the recipient's computer to the network Was provided as over click service method (e.g., see Patent Document 1.).

  Further, based on a component image generated from an image (original image) acquired from the outside, extraction of candidate regions in this component image, each corresponding region in the original image corresponding to this extracted candidate region is characteristic. After determining whether or not the pattern is included, the region of the identification target region (two-dimensional code) is detected from the original image, and the candidate regions for each of the plural types of component images generated based on the original image An image processing system has been proposed that repeatedly performs extraction, determination of whether or not a characteristic pattern is included in the extracted candidate area, and detection of a two-dimensional code area (for example, Patent Document 2). reference.).

JP 2007-4249 A

Japanese Patent No. 4724799

  However, although the color code has been improved in reading speed, it has low reading speed compared to a bar code or the like. In addition, unlike RFID, since copying is easy, there is a problem in the security level depending on the usage scene.

In addition, the color code is usually configured such that a plurality of areas called cells are arranged according to a predetermined rule, and a color obtained by encoding predetermined data is assigned to each cell. Cannot decode. Therefore, there has been a disadvantage that the decoding accuracy is remarkably lowered as compared with a barcode or the like due to causes such as fading, illumination environment, printing unevenness, and stains.

In addition, as a scene where it is preferable to adopt a color code rather than a barcode or the like, there is a point that the design property of a target image to which the code is attached is not impaired. In particular, it can be easily imagined that if a barcode or the like is attached to a color target image, the design is impaired. In particular, if the amount of information is to be increased, it is necessary to increase the physical area of the code. Here, the significance of adopting a color code arises, but even with a color code, the sense of incongruity with the target image cannot be completely eliminated. Therefore, further reduction is desired without reducing the amount of information that the color code has. On the other hand, when the color code is reduced indefinitely, color wavelengths are mixed in the vicinity of the boundary between adjacent cells, color misrecognition occurs, and decoding accuracy is lowered.

It should be noted that color misrecognition occurs in an environment where pollution and illuminance are insufficient, in addition to the reduction in cell size. In particular, the demand for 2D codes is high for the traceability of cargo, etc. stored in warehouses for logistics, etc., but on the other hand, the 2D code part is contaminated, or there is sufficient illuminance to determine the color. In many cases, the environment cannot be obtained. Conventionally, for such color misrecognition, a calibration cell is prepared in a partial area of the color code, and correction is performed with a relative color tone difference. However, when the calibration area itself is fouled or the illuminance is insufficient, there is a disadvantage that the correction reference color cannot be obtained and correction is impossible.

The present invention is for solving the above problems, and even in a poor environment for decoding processing, while maintaining a certain decoding accuracy and maintaining a high security level, It is an object to provide a two-dimensional code, a two-dimensional code system, a two-dimensional code imaging terminal, and an information processing method using the two-dimensional code that do not impair the design.

In order to achieve the above object, a two-dimensional code according to the present invention includes an area that can be optically imaged by arranging a plurality of cells having a predetermined shape formed in various colors in a two-dimensional direction, and the array A two-dimensional code that can be encoded into predetermined information by a color code composed of a plurality of cells,
A boundary demarcating section that surrounds the target region of the two-dimensional code with a continuous frame;
A code region portion comprising color codes arranged in a matrix so that each cell can be decoded into first decoding data at a predetermined position in the boundary demarcation portion;
In the boundary demarcating section, an image image that is an area other than the code area section and has at least a color that can be distinguished from the frame line as a background color, and that can be specified by feature data for performing an authentication process. An image display unit for displaying,
When the color code in the code area is converted into a black and white multi-gradation image and optically imaged, the color code is converted into a binary code of black and white and two gradations, and can be decoded into second decoding data. It is the main feature that it is arranged.

According to this configuration, a single two-dimensional code can be used as a color code according to the imaging environment or as a binary code of black and white two gradations.

The color code in the code area includes a binary code of two-tone black and white that can be decoded into the second decoding data. When the code is converted into a black-and-white multi-tone image and captured optically, the color code is black and white. A configuration may be employed in which only two binary codes are decoded and converted into two gradations.

In order to increase the security level, the authentication processing of the image display unit is configured such that the image image can be made independent from the code area unit and matched with an image to be compared using the feature amount data. Also good.

The code area part may be formed by forming each cell in an isosceles triangle and arranging a rectangular body of two cells in a matrix. By constituting in this way, many cells can be formed in a narrow space, and a two-dimensional code can be attached without impairing design.

The two-dimensional code system according to the present invention includes a boundary demarcating unit that surrounds a target area with a continuous frame line, and a plurality of cells having various shapes at predetermined positions in the boundary demarcating unit. A code region portion arranged in a matrix so as to be optically imageable, and a region other than the code region portion in the boundary demarcating portion, at least in the background color, the frame A predetermined two-dimensional code is provided by decoding a two-dimensional code having a color that can be distinguished from a line, and an image display unit that displays an image image that can be specified by feature data in order to perform authentication processing A two-dimensional code system,
From the two-dimensional code imaging terminal that optically images the border line of the boundary defining portion of the two-dimensional code, the color code of the code region portion, and the image image of the image display portion, the two-dimensional code An authentication acceptance means for accepting an authentication request;
Data storage means for storing the issued two-dimensional code and the first decoding data and the second decoding data corresponding to the issued two-dimensional code;
An authentication processing means for reading out the requested two-dimensional code from the two-dimensional code registration means and collating the image image;
Decode processing means for decoding the color code of the two-dimensional code subjected to the authentication processing into first decoding data;
Data transfer means for returning the decoded data to the two-dimensional code imaging terminal via the Internet,
The decoding processing means includes conversion means for converting the color code into a monochrome binary code when the authentication receiving means receives a two-dimensional code of a monochrome multi-tone image from the two-dimensional code imaging terminal. The main feature is to have an information processing server that decodes the second decoded data corresponding to the converted binary code.

As described above, the color code of the code area portion of the two-dimensional code incorporates a binary code of two-tone black and white that can be decoded into the second decoding data, and is converted into a black-and-white multi-tone image to convert the optical If the image is picked up, the image data may be converted into black and white gradation and only the binary code may be decoded.

The code area part is composed of at least a data code to be decoded, and an error detection code that divides the data code into predetermined block units and assigns an error detection cell to each block, The information processing server may include error detection correction means for detecting erroneous information using an error detection code from the captured image received by the authentication reception means, and specifying and correcting the error position.

The two-dimensional code imaging terminal according to the present invention includes a boundary demarcating unit that surrounds a target region with a continuous frame line, and a plurality of cells having various shapes at predetermined positions in the boundary demarcating unit. Is a color code that can be optically imaged, arranged in a matrix, and can be converted into a black and white binary code, or a code area portion that includes a code including a black and white binary code, and the boundary An image that displays an image image that can be identified by feature amount data in order to perform authentication processing, in a region other than the code region portion in the demarcating portion, with at least a background color that is distinguishable from the frame line. A two-dimensional code imaging terminal that images a two-dimensional code having a display unit and requests a predetermined information processing server to decode the two-dimensional code,
An imaging unit that optically converts the two-dimensional code into a color or black-and-white multi-tone image and images, a display unit that displays the two-dimensional code to be imaged on a display, and the boundary demarcation unit is detected. Boundary detection means, direction detection means for specifying a direction for decoding the two-dimensional code in the code area portion, code detection means for detecting the color code and the image image, and the captured two-dimensional code Authentication request means for sending an authentication request by transmitting a color code and an image detected from the image to a predetermined information processing server; and receiving means for receiving data that has been authenticated by the information processing server and decoded from the color code And having
When the imaging unit captures the two-dimensional code in color, the receiving unit receives data decoded by the first decoding data, converts the data into a monochrome multi-tone image, and captures the image. The information processing server receives data decoded by the second decoding data by converting the converted image into a monochrome binary code or selecting only the monochrome binary code. To do.

The imaging means includes illuminance detection means for detecting illuminance under the imaging environment of the two-dimensional code, and color conversion for converting to a monochrome multi-tone image when the detected illuminance is a predetermined threshold value or less. And switching means for switching to infrared imaging may be included.

The information processing method according to the present invention includes a boundary demarcating unit that surrounds a target area with a continuous frame line, and a matrix of a plurality of predetermined shapes that are given various colors at predetermined positions in the boundary demarcating unit. A code region portion arranged with a color code region that is optically imageable and arranged within the boundary demarcation portion, in a region other than the code region portion, at least in the background color, the frame line An information display method that provides predetermined information using a two-dimensional code, and an image display unit that displays an image image that can be identified by feature amount data in order to perform authentication processing. There,
When the two-dimensional code is issued, the two-dimensional code and the first decoding data and the second decoding data are associated with each other in advance and stored in an information processing server; and the two-dimensional code is optically imaged A step of imaging with a possible two-dimensional code imaging terminal, a step of transmitting an authentication request for the captured two-dimensional code to an information processing server via the Internet, and an information processing server receiving the authentication request An authentication process step for matching with a pre-registered two-dimensional code based on image feature data, a step for decoding the two-dimensional code subjected to the authentication process into first decoding data, and the decoding process. Returning the obtained first decoding data to the two-dimensional code imaging terminal via the Internet network; Has,
When the two-dimensional code imaging terminal captures the two-dimensional code as a monochrome multi-tone image and makes the authentication request, the information processing server converts the received monochrome multi-tone image into a monochrome binary code. The most important feature is that it is converted, the black and white binary code is decoded into the second decoding data, and the second decoding data is returned to the two-dimensional code imaging terminal.

The color code includes a monochrome two-tone binary code that can be decoded in the second decoding data, and the two-dimensional code imaging terminal picks up the two-dimensional code as a monochrome multi-tone image. When the authentication request is made, the information processing server decodes only the binary code into the second decoding data, and returns the second decoding data to the two-dimensional code imaging terminal. It may be.

The authentication process normalizes the two-dimensional code requested for authentication to a predetermined size, divides the area excluding the code area portion into meshes, calculates a feature amount for each coordinate point in mesh units, and stores the pre-stored The hamming distance for each coordinate point corresponding to the feature amount of the two-dimensional code that has been obtained may be obtained, and matching may be performed on both.

  The present invention is configured so that a two-dimensional code composed of a color code can be encoded as a black and white binary code, so that a certain decoding accuracy can be obtained even in a poor environment for imaging a two-dimensional code. There is an effect that can be maintained.

In addition, since the shape of each cell can be devised and a large number of cells can be formed in a narrow space, a large amount of information can be encoded without impairing the design, and further, by making the cells smaller One of the frequent occurrences of color misrecognition is to increase the number of cells allocated to the error detection code. Further, as described above, in an environment where color recognition is difficult in the first place, it is converted to the binary code. There is an effect that information processing with high accuracy becomes possible.

In addition to the color code, an authentication process using an image is performed, so that an effect that a higher security level can be maintained is achieved.

FIG. 1 is a diagram showing a configuration example of a two-dimensional code according to the present invention. FIG. 2 is a diagram showing a modification of the two-dimensional code according to the present invention. FIG. 3 is a diagram showing another modification of the two-dimensional code according to the present invention. FIG. 4 is a diagram in which a color code is converted into a monochrome binary code. FIG. 5 is a diagram showing an example of a two-dimensional code including both a color code and a monochrome binary code in advance. FIG. 6 is a diagram showing a configuration of a system for generating a two-dimensional code according to the present invention. FIG. 7 is a configuration diagram of an information processing server that performs a two-dimensional code decoding process. FIG. 8 is a diagram showing a processing flow of the decoding process. FIG. 9 is a diagram showing a modification of the information processing server. FIG. 10 is a diagram illustrating a decoding processing flow of a modification of the information processing server. FIG. 11 is a configuration diagram of an information processing server having an error detection and correction unit. FIG. 12 is a diagram showing a processing flow of error detection correction. FIG. 13 is a schematic diagram illustrating an image image authentication process. FIG. 14 is a diagram illustrating an authentication processing flow of an image. FIG. 15 is a diagram showing an authentication processing flow in the case of decoding processing with a binary code. FIG. 16 is a diagram illustrating an image example in which text data is added to an image image. FIG. 17 is a diagram illustrating a cooperation relationship between two-dimensional codes having a cooperation code. FIG. 18 is a configuration diagram of an information processing server capable of badge processing of a cooperation code. FIG. 19 is a configuration diagram of an information processing server that can display a composite image on a two-dimensional code. FIG. 20 is a screen transition diagram of a two-dimensional code imaging terminal based on a composite image. FIG. 21 is a configuration diagram of a two-dimensional code imaging terminal according to the present invention. FIG. 22 is a configuration diagram of a two-dimensional code imaging terminal having a function that allows an imaging method to be changed according to illuminance. FIG. 23 is a configuration diagram of a two-dimensional code imaging terminal having a binary code conversion function.

  Referring to FIG. 1, reference numeral 1 denotes a two-dimensional code according to the present invention. In the two-dimensional code 1, a target region is surrounded by a continuous border line boundary region 11. By the boundary region portion 11, it is possible to easily discriminate a region to be decoded from other regions, such as a medium to which the two-dimensional code 1 is attached, a packing material, and the like.

The boundary area part 11 is composed of a code area part 12 and an image display part 13. The code area unit 12 has a plurality of cells 12a arranged in a matrix in a certain direction (two-dimensional direction), and various colors are applied to each cell 12a. In the embodiment shown in FIG. 1, the cells 12a are formed into isosceles triangles, and the bases of the two cells 12a are line-contacted to form a rectangular body (square). Conventionally, the cells constituting the color code can take various shapes, but in actual operation, square or rectangular rectangles are arranged in a matrix, and the overall color code is also square or rectangular. Most of them were. In the present invention, the number of cells 12a can be easily doubled even in the same space as the space occupied by the conventional color code. Further, by making the shape of the unit cell 12a a triangle, the shape of the entire color code can be formed in a shape other than a square or rectangle, and the degree of freedom of the shape of the code area can be increased. There is also an effect that the design balance of the whole is not lost. Furthermore, if the number of cells can be increased in the same space, much information can be encoded with a color code. In addition, when the space per cell 12a is small, in general, color misrecognition is likely to occur.However, as described below, since the present invention provides a highly accurate allowance for misrecognition, It is possible to eliminate the adverse effects caused by misrecognition with high accuracy.

  In the two-dimensional code 1 shown in FIG. 1, the target region specified by the boundary demarcating unit 11 is a rectangle, and the outer edge of the code region unit 12 is a right isosceles triangle in which two sides of the equal side overlap at least one corner of the target region. Is formed. Each cell 12a has a shape similar to the shape of the entire code region portion 12, and as described above, the two cells 12a form a square. The squares are sequentially arranged in the hypotenuse direction of a right-angled isosceles triangle that forms the outer edge of the code region portion 12 to form the outer edge of the code region portion 12 as a whole. In addition, a region having a predetermined width that bisects the arranged cells 12a is provided in a direction orthogonal to the oblique side direction from the corner of the boundary demarcating portion 11, and a predetermined number of cells are arranged in the orthogonal direction. . This is a direction specifying code unit 12b for specifying the orientation of the image display unit 13, unlike the cell 12a that encodes predetermined data. The orientation of the image display unit 13 can be recognized by applying different specific colors to the cells constituting the direction specifying code unit 12b and sequentially reading in the orthogonal direction.

In FIG. 1, the target region is formed in a substantially square shape, but the purpose is not limited to this shape. However, considering the good fit of the code area portion 12, at least when the entire shape of the two-dimensional code 1 is a square, it is limited to form the code area portion 12 by arranging the cells 12a as described above. From the viewpoint of increasing the number of cells in the space, it is preferable.

The image display unit 13 displays an image, which is used for authentication processing, as will be described later, and is an image that can be specified by feature amount data. The background color of the image image needs to be a color that can be distinguished from the frame line of the boundary demarcation unit 11. For example, the color of the frame line may be black and the background color of the image image, in particular, the portion in contact with the frame line may not be used.

  2 and 3 are modified examples of FIG. FIG. 2 is arranged at the four corners of the quadrangle forming the code area portion 12 of FIG. 1, and FIG. 3 is a diagram in which the square formed by the two cells 12a is inscribed in the border line of the boundary demarcating portion 11. FIG. Are arranged in a circle. Of course, the cells 12a are not intended to limit the arrangement method to the form shown in FIGS. 1 to 3, but considering the image balance of the image display unit 13, and the overall design balance of the place where the two-dimensional code 1 is pasted. It is preferable that the arrangement of the code region portion 12 be as small as possible in the vicinity of the periphery of the two-dimensional code 1.

FIG. 4 is an enlarged view of a part of the code area portion 12. As described above, the cell 12a of the code area portion 12 is given various colors. The color code is usually used for the purpose of improving the data recording density by replacing the bit arrangement of the data to be encoded with a color, as compared with the case of monochrome binary. Therefore, it is assumed that the shades of various colors can be discriminated.

However, in an environment where sufficient illuminance is not obtained to determine the color, the original function of the color code cannot be exhibited and desired data cannot be obtained. The present invention is for solving such inconvenience.

FIG. 4 (a) shows color shades in each cell 12a as numerical values. FIG. 4B shows a black-and-white binary conversion in which these numerical values are provided with a predetermined threshold (in the example of FIG. 4, 0 to 4 is 1 (black), and 5 or more is 0 (white)). That is, as shown in FIG. 4A, when various colors can be discriminated, the first decoding data can be obtained by performing decoding processing according to the color, but on the other hand, the various colors are discriminated. In an environment where the illumination is not possible (a place such as a warehouse where illumination is insufficient), the second decoding data can be obtained by performing binary conversion in black and white and performing a decoding process corresponding to this. It has become.

  Further, as shown in FIG. 5, the code area unit 12 is composed of a color code area C and a monochrome binary code area M, and either one is selectively decoded according to the imaging environment of the two-dimensional code 1. It may be configured as follows.

FIG. 6 is a block diagram of the issue server 2 that generates and issues the two-dimensional code 1 according to the present invention. The issuing server 2 includes at least a CPU that performs various processes and control by a computer program, a memory that temporarily stores the computer program and data obtained by the process, an input / output device that exchanges various data, A communication device (not shown) for communicating with another communication device via an external storage device for storing data, the Internet network, or the like is provided. Each function described below is executed by a computer program, and the CPU reads and executes a predetermined computer program stored in the memory, thereby functioning as a component existing in the issuing server 2 To do. That is, when the software that is the computer program is read into hardware such as the CPU, the calculation or processing of information according to the purpose of use is realized by specific means in which the software and hardware resources cooperate, A specific information processing apparatus corresponding to the purpose of use is constructed. Hereinafter, in this specification, what is referred to as “server” and “terminal” have the above-described configuration.

When a distribution request is issued via the Internet network from the distribution terminal D that requests issuance in order to use the two-dimensional code 1, the issuance server 2 accepts the request by the generation request accepting unit 21. The distribution terminal D sends the image image displayed on the image display unit 13 of the two-dimensional code 1 and data desired for encoding processing together with the request.

The feature amount of the image received by the generation request reception unit 21 is quantitatively calculated by the feature amount calculation unit 22 by a predetermined method. Since the image is used in the authentication process, it must be disabled if it is the same as or similar to an image that has already been issued. Therefore, it has a storage unit 23 for storing the issued two-dimensional code 1, and the confirmation unit 24 compares the image image in which the feature amount is calculated with the two-dimensional code 1 stored in the storage unit 23. When an approximation degree equal to or greater than a predetermined threshold value set in advance is indicated, the image is returned and a message for refusing to issue the two-dimensional code 1 is transmitted to the distribution terminal D (not shown).

When the degree of approximation is less than a predetermined threshold, a new two-dimensional code 1 is generated by the generation unit 25. The generation unit 25 registers the feature amount data of the image image with the feature data registration unit 251, issues a new color code, is registered with the color code issue registration unit 252, and is recorded in the two-dimensional code 1. Information (for example, metadata) is also registered by the related information registration unit 253. Each data and information is stored in the storage unit 23.

The two-dimensional code 1 generated by the generation unit 25 is registered in the two-dimensional code registration unit 26, read by the issuing unit 27, and issued to the distribution terminal D via the Internet network.

In the present invention, as described above, the decoding data includes two types of decoding data, ie, the first decoding data that is decoded with a color code and the second decoding data that is decoded with a monochrome binary code. Therefore, the storage unit 23 stores data so that they can be distinguished from each other.

FIG. 7 is a block configuration diagram illustrating a first embodiment of the information processing server 3 that performs authentication processing and decoding processing via the two-dimensional code 1. The information processing server 3 accepts an authentication process from the two-dimensional code imaging terminal I that has captured the two-dimensional code 1 through the Internet network by the authentication request unit 31. The information processing server 3 reads the two-dimensional code 1 registered in advance in the two-dimensional code registration unit 32, and displays the image image displayed on the image display unit 13 of the two-dimensional code 1 requested for authentication and the Authentication processing is performed by collating the registered image of the two-dimensional code 1. This authentication process is performed by the authentication processing unit 33. As will be described later, the authentication process is performed by matching from the feature amount of the image.

When authentication is performed by the authentication process, the image requested by the image determination unit 34 is a color image or a so-called monochrome image (more precisely, a grayscale multi-tone image. Or “tone image”). In the case of a color image, in order to decode the color code of the two-dimensional code 1 by the decoding processing unit 35, the first decoding is performed from the data storage unit 36 that stores the two-dimensional code 1 and the decoding data in association with each other. The first decoding data is generated by reading the coding data. The first decoding data is sent from the data transfer unit 37 to the two-dimensional code imaging terminal I via the Internet network. If authentication is not permitted by the authentication process, the two-dimensional code 1 requested to be authenticated is returned from the data transfer unit 37 together with a notification indicating that the authentication is not permitted (not shown).

By the way, if the environment in which the 2D code imaging terminal I captures the 2D code 1 does not provide sufficient illuminance to distinguish the color of the color, the 2D code terminal I side displays a monochrome multi-tone image. The imaged image can be requested for authentication. In this case, as described with reference to FIG. 4, the conversion unit 351 of the decoding processing unit 35 converts the color code into a black and white binary code, reads the corresponding second decoding data from the data storage unit 36, and performs decoding processing. .

Note that the binary code conversion by the conversion unit 351 is performed when a two-dimensional code imaging terminal I captures a monochrome multi-tone image, but the two-dimensional code imaging terminal I captures a color image. If the image is converted into a black and white binary code together with the authentication request and a request for a decoding process using the second decoding data is made, the image determination unit 34 determines whether the request is present, and the conversion process is performed. You may make it perform.

FIG. 8 is a flowchart of the information processing method by the two-dimensional code system having the information processing server 3 described in FIG. The decoding data (first decoding data and second decoding data) is stored in advance in the data storage unit 36 of the information processing server 3 in association with the two-dimensional code to be issued (S101). When the two-dimensional code is imaged by the two-dimensional code imaging terminal I (S102) and an authentication request is made to the information processing server 3 via the Internet, the authentication receiving unit 31 of the information processing server 3 receives the authentication request (S103). The authentication processing unit 33 of the information processing server 3 includes the two-dimensional code registered in advance in the two-dimensional code registration unit 32 and the feature amount of the image image in the two-dimensional code 1 for the two-dimensional code 1 requested to be authenticated. Authentication processing is performed by matching with data (S104).

When the two-dimensional code 1 is authenticated, the image determination unit 34 of the information processing server 3 determines whether or not the two-dimensional code 1 requested for authentication is captured as a monochrome multi-tone image (S105). ). If the authentication is not permitted in the authentication process of S104, the two-dimensional code imaging terminal I that has requested authentication is notified of the rejection together with the return of the captured image (not shown).

When the two-dimensional code 1 is captured as a color image (No in S105), the decoding processing unit 35 reads the first decoding data from the data storage unit 36 and performs the decoding process (S106). The first decoding data obtained by the decoding process is sent from the data transfer unit 37 to the two-dimensional code imaging terminal I via the Internet network (S107).

On the other hand, if the two-dimensional code 1 is captured as a monochrome multi-tone image (Yes in S105), first, the data is stored after being converted into a monochrome binary code by the conversion unit 351 of the decode processing unit 35 (S108). The second decoding data is read from the unit 36 and the decoding process is performed (S109). The second decoding data obtained by the decoding process is sent from the data transfer unit 37 to the two-dimensional code imaging terminal I via the Internet network (S110). Note that, as described above, the conversion of the binary code by the conversion unit 351 is performed by converting the image captured by the two-dimensional code imaging terminal I as a color image and converting it into a monochrome binary code together with the authentication request. When a request for a decoding process using coding data is made, the image determination unit 34 may determine whether or not such a request is present, and the conversion process may be performed (not shown).

The first decoding data in S107 or the second decoding data in S110 is received by the two-dimensional code imaging terminal I, and the information processing by the decoding process ends (S111).

FIG. 9 is a block diagram showing a second embodiment related to the decoding processing function of the information processing server 3. Components having the same configuration as the information processing server 3 described in FIG. 7 are denoted by the same reference numerals, and detailed description thereof is omitted.

In the present embodiment, the configuration of the information processing server 3 that performs a decoding process when the two-dimensional code 1 described in FIG. 5 is used is shown. That is, the two-dimensional code 1 has a color code area C that can be decoded into first decoding data and a monochrome binary code area M that can be decoded into second decoding data. When the image determination unit 34 determines that the captured image received from the two-dimensional code imaging terminal I is a color image, the processing region specifying unit 352 of the decoding processing unit 35 decodes only the color code region C. And On the other hand, when the image determination unit 34 determines that the captured image received from the two-dimensional code imaging terminal I is a black and white multi-tone image, only the monochrome binary code region M is detected by the processing region specifying unit 352 of the decoding processing unit 35. Are to be decoded. The processing of the processing area specifying unit 352 includes, for example, a cell indicating a starting point and an ending point for specifying the range of the color code area C and the black and white binary code area M. It is only necessary to determine whether to read the end point and specify each area.

FIG. 10 is a flowchart of the information processing method by the two-dimensional code system having the information processing server 3 described in FIG. A detailed description of the same steps as the processing steps described in FIG. 8 is omitted.

The steps from S201 to S207 are the same as the steps from S101 to S107 in FIG. When it is determined that the image captured by the two-dimensional code imaging terminal I is a color image (No in S205), the processing area specifying unit 352 of the decoding processing unit 35 specifies the color code area (S206). The subsequent decoding processing steps S207 and S208 are the same as the steps S106 and S107 in FIG.

On the other hand, when it is determined that the image captured by the two-dimensional code imaging terminal I is a monochrome multi-tone image (Yes in S205), the processing area specifying unit 352 of the decoding processing unit 35 performs the monochrome binary code area. Is identified (S209). The subsequent decoding processing steps S210 and S211 are the same as the steps S109 and S110 in FIG.

FIG. 11 is a block diagram showing a third embodiment relating to the decoding processing function of the information processing server 3. (Figure) In color code decoding processing, in an environment where illumination is insufficient, in many cases, it is impossible to identify the color of the entire color code. However, for example, when a color code is partially misrecognized due to contamination or the like, it can be dealt with by detecting and correcting the error location. In a conventional color code, a color calibration area (in many cases, an area for one row or one column of a matrix-like arrangement) is provided, and the colors applied here are compared relative to each other. Thus, it is configured to correct erroneous color recognition. In this case, when the calibration area is contaminated, the reference color itself cannot be used, and the error detection and correction functions do not work.

In the present invention, as described with reference to FIGS. 1 to 3, more cells can be arranged in the same color code space than in the prior art. Therefore, by increasing the number of cells allocated for error detection and distributing the allocation positions, it becomes possible to detect and correct errors with higher accuracy.

In order to perform the error detection, on the two-dimensional code side, the code area unit 12 is divided into at least a data code to be decoded and the data code in predetermined block units, and each block is used for error detection. It is made up of error detection codes for allocating cells (not shown).

For example, when 104 cells 12a constituting the code area portion 12 are arranged, if cells corresponding to about one third of the cells are assigned to error detection cells, out of 103 cells (1 cell) These cells are not used as spare cells.) 99 cells can be assigned as data codes, and 34 cells can be assigned as error detection codes. If the data code is colored with eight colors as a color code, the number of 8 to the 99th power is managed by the error detection code. This is because one error detection code cell is provided for every two data code cells. Will be assigned. On the other hand, in the case of a monochrome binary code, the number of 2 to the 99th power (63 穣, that is, 10 to the 28th power) is managed, but one error detection code is assigned to the black and white binary × 2 code. Can be assigned. This may be used as the block unit to perform error detection in each block.

The decoding processing unit 35 of the information processing server 3 performs error detection and correction in the error detection / correction unit 353 during the decoding process of the two-dimensional code 1 having the data code and the error detection code. The error detection code assigned to each block may function as a so-called parity bit. That is, according to a known parity check technique, by adding an error detection code, any of the set even or odd numbers is detected for the number of predetermined bits, and it is detected that there is an error in a block that does not match. Further, in order to detect where an error is detected in a block where an error is detected, a redundant bit is added by a generator matrix, and an error location can be specified and corrected by a predetermined check matrix.

11 is based on the configuration of FIG. 7, the error detection and correction unit may be provided based on the configuration of FIG.

FIG. 12 is a processing flow diagram in which error detection and correction steps are added to the information processing method using the two-dimensional code system having the information processing server 3 described in FIG. A detailed description of the same steps as the processing steps described in FIG. 8 is omitted. The processes from S301 to S305 are the same as the processes from SS101 to S105 in FIG. When it is determined that the image captured by the two-dimensional code imaging terminal I is a color image (No in S305), the error detection and correction unit 353 detects and corrects an error location according to the parity check method. (S306). The subsequent steps S307 to S313 are the same as the steps S106 to S111 in FIG.

On the other hand, if it is determined that the image is a monochrome multi-tone image (Yes in S305), after being converted into a monochrome binary code (S309), the error detection and correction unit 353 detects and corrects an error location according to the parity check method. Is performed (S310). The subsequent steps S311 to S313 are the same as the steps S109 to S111 in FIG.

Note that the error detection and correction process can also be applied to the processing method described with reference to FIG. 10. In this case, for example, an error and correction process may be added to the processes of S206 and S209 in FIG. .

FIG. 13 is an image diagram of authentication processing using an image image of the image display unit 13 of the two-dimensional code 1. The two-dimensional code 1 is mesh-divided by a plurality of equally spaced dividing lines 13a in the vertical direction in front view and a plurality of equally spaced dividing lines 13b in the horizontal direction, and for each intersecting intersection of the dividing lines 13a and 13b, that is, Each feature amount is calculated for the coordinates 13c for each mesh unit. Note that the code area unit 12 is excluded from the feature amount calculation targets. This is because, as will be described later, it is difficult to obtain the characteristics of the code area portion 12 by converting the image image to gray scale.

The calculation result 131 of the intersection coordinates 13c is quantified by coordinate points (x = 3, y = 2), a normalized size (downsampling = 1) described later, and 8-bit, 32-dimensional feature quantities. On the other hand, the calculation result 132 of the target code read from the two-dimensional code registration unit 32 is also presented with data quantified by coordinate points, normalized size and 8-bit, 32-dimensional feature quantity. Is done. The authentication process is performed by matching feature amounts based on both data.

FIG. 14 is a diagram illustrating an authentication processing flow of an image. When the information processing server 3 receives an authentication process request from the two-dimensional code imaging terminal I and starts the authentication process, first, as a pre-process for pattern recognition, the feature point of the target image image matches a predetermined criterion. Therefore, normalization of the image is performed (S401). For example, the image is grayscaled to make the size of the image uniform. The normalized image is subjected to the mesh division (S402), and a feature amount is calculated for each coordinate point, that is, for each feature point (S403). Next, an image to be compared is read from the two-dimensional code registration unit 32 (S404), and feature points are similarly calculated. For each feature point, a Hamming distance between the image image of the two-dimensional code 1 requested for authentication and the image image to be compared is calculated (S405). The sum total of the Hamming distances of all the feature points is calculated (S406), and the two are matched.

The matching is performed by setting a threshold value for determining the similarity with respect to the Hamming distance in advance, and comparing the calculated sum of the Hamming distances with the set threshold value (S407). If the predetermined threshold is less than or equal to the total amount (Yes in S407), authentication is permitted (S408), and if the predetermined threshold exceeds the total amount (No in S407), authentication is not permitted (S409). When the authentication result is output, the authentication result is notified to the two-dimensional code imaging terminal I which has requested the authentication (S410).

In general, when performing traceability in logistics, when 2D code 1 is imaged in a warehouse in the middle of logistics, sufficient illuminance cannot be obtained, so that the color code does not function sufficiently in the decoding process as described above. This is the same for the authentication process. Although the authentication process using the image image is converted into a gray scale in the normalization process, if the image is captured in a dark place, details may be unclear and the accuracy of the authentication process may be hindered. Therefore, in the authentication process, two options are set according to the imaging environment, as in the decoding process. Specifically, an authentication code may be set in the code area unit 12 and the authentication process may be performed exclusively by this authentication code.

FIG. 15 is a diagram showing an authentication processing flow in the case of decoding processing with a binary code. A detailed description of the same steps as the processing steps described in FIG. 8 is omitted. Further, although the present embodiment is based on the configuration of FIG. 8, it can be similarly applied to the configuration of FIG.

S501 to S503 are the same as S101 to S203 in FIG. When an authentication request is made (S503), the authentication process is not immediately performed, and it is first determined whether or not to process with a monochrome binary code (S504). If the process using the color code is selected (No in S504), the image image is also captured relatively clearly, and the authentication process using the image image is performed (S505). Hereinafter, steps S506 to S512 are the same as steps S106 to S111 in FIG.

On the other hand, when the processing based on the black and white binary code is selected (Yes in S504), since the details of the image may not be clearly captured, the authentication processing based on the image image is not selected, and the code area Authentication processing is performed using the authentication code preset in the unit 12 (S508). Hereinafter, S509 to S512 are the same steps as S108 to S111 in FIG.

By the way, for example, when affixing the two-dimensional code 1 to each of a large number of packing materials in logistics or the like, if the encoded data is slightly different from each other, confusion occurs in the course of the affixing operation. Need to be confirmed. In this case, if the decoding process is performed by requesting authentication one by one, the work efficiency is lowered. In many cases, the information required in the above situation is metadata level information encoded by the two-dimensional code 1, and is not full-size decoding data. Therefore, as shown in FIG. 16, it is only necessary to display the text data 14 obtained by encoding the metadata on the two-dimensional code 1 and read only the metadata. In this case, the two-dimensional code imaging terminal I may make a confirmation request to the information processing server 3 while focusing only on the text data 14. The metadata provided by the text data 14 may be stored in the data storage unit 36 in correspondence with the first decoding data or the second decoding data (not shown). The text data 14 can also be discriminated by visual inspection by an operator, unlike a color code or a black and white binary code, and thus functions as visual confirmation data without making the confirmation request.

FIG. 17 is a diagram schematically illustrating a relationship between two-dimensional codes associated with a linkage code. In logistics, etc., when transporting products, first store a plurality of products G in a large packing material B, start transporting, and unpack and transport in small portions before reaching the final destination. There is a case. In this case, the two-dimensional code may include the linkage code so that the product G and the packaging material B are associated with each other. In FIG. 17, a two-dimensional code 1A including a cooperation code 12A for comprehensively linking the product G is pasted on the packaging material B, and the product G has a cooperation code 12a, 12b indicating a cooperation relationship with the two-dimensional code 1A. , 12c including two-dimensional codes 1a, 1b, and 1c are pasted. As text data, “A000” is described in the two-dimensional code 1A, and “A001”, “A002”, and “A003” are described in the two-dimensional codes 1a, 1b, and 1c, respectively. The dimension code 1A is comprehensively linked with each of the two-dimensional codes 1a, 1b, and 1c. In the present embodiment, the two-dimensional codes 1a, 1b and 1c serving as slave codes are linked in one layer with respect to the two-dimensional code 1A serving as a master code, but the two-dimensional code having the slave code relationship. The code may be hierarchized in a plurality of stages.

FIG. 18 is a block diagram of the information processing server 3 that performs processing of a two-dimensional code including the linkage code. Components having the same configuration as the information processing server 3 described in FIG. 11 are assigned the same numbers, and detailed descriptions thereof are omitted. 18 has the information processing server 3 of FIG. 11 as a basic configuration, but the configuration of the information processing server 3 shown in another embodiment may be the basic configuration.

If there are many two-dimensional codes including linkage codes, work efficiency is poor if authentication processing is requested one by one. Therefore, the two-dimensional code imaging terminal I is operated offline, and two-dimensional codes including the cooperation code are collectively captured and read, and then online and an authentication request is made to the information processing server 3. The information processing server 3 only needs to accept this at once by the authentication accepting unit 31 and allow the badge processing unit 38 to process at once.

When decoding the two-dimensional code 1 and displaying the decoded data on the two-dimensional code imaging terminal I, a higher order user interface can be realized by displaying the composite image. FIG. 19 is a block diagram of the information processing server 3 provided with a composite image generation unit 39 for displaying the composite image on the two-dimensional code imaging terminal I. Components having the same configuration as the information processing server 3 described in FIG. 11 are assigned the same numbers, and detailed descriptions thereof are omitted. 19 has the information processing server 3 in FIG. 11 as a basic configuration, but the configuration of the information processing server 3 shown in another embodiment may be the basic configuration.

Decoding data obtained by the decoding processing by the decoding processing unit 35 is generated as a composite image by the composite image generation unit 39 and stored in the composite image storage unit 391. The data transfer unit 37 reads the composite image from the composite image storage unit 391 and returns it to the two-dimensional code imaging terminal I that has requested authentication.

FIG. 20 is a diagram showing a screen transition of a user interface for displaying the composite image on the two-dimensional code imaging terminal I. First, the two-dimensional code 1 displayed on the photographed image R is imaged by the two-dimensional code imaging terminal I (I1). When the imaged two-dimensional code 1 is requested for authentication to the information processing server 3, the information processing server 3 performs authentication processing and decoding processing, and the composite image generation unit 39 displays the two-dimensional code 1 on the screen of the two-dimensional code imaging terminal I. An image to be generated is generated. When this is stored in the composite image storage unit 391 and returned from the data transfer unit 37 to the two-dimensional code imaging terminal I via the Internet, the two-dimensional image captured on the screen of the two-dimensional code imaging terminal I is displayed. Code 1 is cut out and displayed (I2). Next, a button T for guiding expansion to an image to be finally displayed is displayed (I3). When the button T is pressed, a so-called augmented reality (AR) moving image V is displayed on the photographed image R (I4).

By the way, the two-dimensional code 1 according to the present invention can make a plurality of first decoding data or second decoding data correspond to a single two-dimensional code 1 according to a predetermined condition. . Examples of the predetermined condition include position information of the two-dimensional code imaging terminal I, time information, access frequency information, and the like. As the position information, the GPS or WiFi address information of the two-dimensional code imaging terminal I is acquired, and the action at the time of authentication may be switched based on the information. The time information may be switched according to the time stamp of the division processing server at the time of authentication. The access count information may be stored in the information processing server 3 side as the access count or the last access date and time of the two-dimensional code imaging terminal I, and the action may be switched based on the information. Furthermore, as a predetermined condition, the actions may be switched according to a certain probability table set on the information processing server 3 side. Or you may make it switch an action with the attribute (for example, member status) of the user of the two-dimensional code imaging terminal I.

The predetermined condition is provided with a status detection unit (not shown) in the information processing server 3, and when the authentication is requested, the predetermined condition is detected, and the first data corresponding to the detected condition is detected. Coding data or second decoding data may be read.

If decoding data corresponding to the predetermined condition is displayed as the composite image, the information that can be displayed by the two-dimensional code 1 is dramatically increased, and it can be expected that the application field is increased.

FIG. 21 is a block configuration diagram of the imaging processing unit 4 of the two-dimensional code imaging terminal I. The imaging processing unit 4 optically converts the two-dimensional code 1 into a color or black-and-white multi-tone image and images it, an imaging unit 41 that displays the two-dimensional code 1 to be imaged on the display, two A boundary detection unit 43 that detects the boundary demarcation unit 11 of the dimensional code 1, a direction detection unit 44 that specifies a direction for decoding the code region unit 12 of the two-dimensional code 1, and a color code and an image of the two-dimensional code 1 A code detection unit 45 that detects an image, an authentication request unit 46 that sends a color code and an image detected from the captured two-dimensional code 1 to the information processing server 3 and requests authentication, and is authenticated by the information processing server 3. The receiving unit 47 receives data decoded from the color code.

When the imaging unit 41 captures the two-dimensional code 1 in color, the reception unit 47 receives data decoded by the first decoding data, and the imaging unit 41 captures the two-dimensional code 1 in black and white multi-level. When the image is converted into a toned image and captured, the receiving unit 47 uses the second decoding data by the information processing server 3 converting the converted image into a monochrome binary code or selecting only the monochrome binary code. Receive the decoded data.

FIG. 22 is a block configuration diagram showing another embodiment of the imaging processing unit 4 of the two-dimensional code imaging terminal I. In FIG. 21, whether the two-dimensional code 1 is captured in color or monochrome multi-gradation depends on the so-called manual operation of the user, but in the embodiment according to FIG. One of them is automatically determined according to the environment. That is, first, the illuminance detection unit 410 that detects the illuminance under the imaging environment of the two-dimensional code 1, and the color conversion for converting to a monochrome multi-tone image when the detected illuminance is less than or equal to a predetermined threshold The unit 411 and an infrared switching unit 41a that switches the imaging means of the imaging unit 41 to infrared imaging as necessary when converting into a monochrome multi-tone image.

By the way, as described above, the information processing server 3 exclusively converts the captured two-dimensional code 1 into a monochrome binary code or selects only the monochrome binary code portion for decoding processing. In order to reduce the load 3, the conversion to the monochrome binary code or the selection of only the monochrome binary code may be performed on the two-dimensional code imaging terminal I side. FIG. 23 shows the two-dimensional code imaging terminal I provided with a binary conversion / selection unit 48 that allows the imaging processing unit 4 to perform the above processing.

DESCRIPTION OF SYMBOLS 1 Two-dimensional code 2 Issuing server 3 Information processing server 4 Imaging processing part 11 Boundary demarcation part 12 Code area part 13 Image display part 33 Authentication processing part 35 Decoding processing part 351 Conversion part 352 Processing area specification part 353 Error detection and correction section

Claims (30)

A plurality of cells of a predetermined shape formed with various colors are arranged in a two-dimensional direction, including an optically imageable region, and encoded into predetermined information by a color code composed of the plurality of arranged cells. A possible two-dimensional code,
A boundary demarcating section that surrounds the target region of the two-dimensional code with a continuous frame;
A code region portion comprising color codes arranged in a matrix so that each cell can be decoded into first decoding data at a predetermined position in the boundary demarcation portion;
In the boundary demarcating section, an image image that is an area other than the code area section and has at least a color that can be distinguished from the frame line as a background color, and that can be specified by feature data for performing an authentication process. An image display unit for displaying,
When the color code in the code area is converted into a black and white multi-gradation image and optically imaged, the color code is converted into a binary code of black and white and two gradations, and can be decoded into second decoding data. A two-dimensional code characterized by being arranged. A plurality of cells of a predetermined shape formed with various colors are arranged in a two-dimensional direction, including an optically imageable region, and encoded into predetermined information by a color code composed of the plurality of arranged cells. A possible two-dimensional code,
A boundary demarcating section that surrounds the target region of the two-dimensional code with a continuous frame;
A code region portion comprising color codes arranged in a matrix so that each cell can be decoded into first decoding data at a predetermined position in the boundary demarcation portion;
In the boundary demarcating section, an image image that is an area other than the code area section and has at least a color that can be distinguished from the frame line as a background color, and that can be specified by feature data for performing an authentication process. An image display unit for displaying,
The color code in the code area includes a binary code of two-tone black and white that can be decoded into the second decoding data. When the code is converted into a black-and-white multi-tone image and captured optically, the color code is black and white. A two-dimensional code, wherein the two-dimensional code is arranged so that it is converted into two gradations and only the binary code is decoded. The authentication processing of the image display unit is configured such that the image image is matched with an image to be compared using the feature amount data independently of the code area unit. The two-dimensional code according to claim 1 or claim 2.   4. The code area portion according to claim 1, wherein each cell is formed in an isosceles triangle and a rectangular body composed of two cells is arranged in a matrix. The two-dimensional code according to item 1.   The target region specified by the boundary demarcating portion is a rectangle, and the code region portion is formed as a right isosceles triangle whose outer edge is equilateral with at least one corner of the rectangle, and the rectangular body is a hypotenuse of the right isosceles triangle A region having a predetermined width that bisects the code region portion in a direction perpendicular to the hypotenuse direction from one corner of the quadrangle, arranging a predetermined number of cells in the orthogonal direction, and displaying the image 5. The two-dimensional code according to claim 4, further comprising a direction specifying code for specifying the orientation of the image in the section.   5. The two-dimensional code according to claim 4, wherein the code area portion is inscribed in a frame line of the boundary demarcating portion, and the rectangular bodies are continuously arranged in a line.   The code area unit is composed of at least a data code to be decoded and an error detection code that divides the data code into predetermined block units and assigns an error detection cell to each block. The two-dimensional code according to any one of claims 1 to 6, characterized by:   The binary code of the code area part is composed of at least a data code to be decoded and an authentication code for performing the authentication process, and when the binary code is used, the image The two-dimensional code according to any one of claims 1 to 7, wherein the display unit is configured not to be used for authentication processing.   The said image display part is displaying the text data part which displays the metadata of the said 1st decoding data or the 2nd decoding data so that optical imaging is possible on the said image image, It is characterized by the above-mentioned. The two-dimensional code according to any one of claims 1 to 8. The color code or binary code of the code area portion includes a linkage code in which one two-dimensional code comprehensively links other two-dimensional codes. Item 10. The two-dimensional code according to any one of items 9 to 9.
A two-dimensional code system for electronically generating and issuing a two-dimensional code,
The two-dimensional code generation request according to any one of claims 1 to 10, while receiving an upload of an image used for the two-dimensional code from the distribution terminal of the two-dimensional code via the Internet network. A generation request receiving unit that receives, a feature amount calculating unit that calculates feature amount data of the image image, a storage unit that stores an image displayed in the issued two-dimensional code, the received image image, and the A confirmation means for comparing the image image stored in the storage means to detect the degree of approximation; a color code uniquely corresponding to the image image; and a related code for displaying related data for the color code; And correspondingly stored in the storage means, and the image image, the color code, and the related code, Generating means for generating synthesized by the two-dimensional code, the generated said two-dimensional code in the distributed terminal, and a issuing means for issuing via the Internet network,
When the confirmation means indicates a degree of approximation equal to or greater than a predetermined threshold, it has an issue server that returns the image image to the distribution terminal via the Internet network without generating the two-dimensional code. A two-dimensional code system. A boundary demarcating part that surrounds the target area with a continuous frame line, and a plurality of cells of various shapes with various colors arranged in a matrix at a predetermined position in the boundary demarcating part can be optically imaged In the code area part in which the area composed of the color code is arranged, and in the boundary demarcating part, the area other than the code area part is provided with a color that can be distinguished from the frame line at least in the background color, and an authentication process A two-dimensional code system that provides predetermined information by decoding a two-dimensional code having an image display unit that displays an image image that can be specified by feature data in order to perform
From the two-dimensional code imaging terminal that optically images the border line of the boundary defining portion of the two-dimensional code, the color code of the code region portion, and the image image of the image display portion, the two-dimensional code An authentication acceptance means for accepting an authentication request;
Data storage means for storing the issued two-dimensional code and the first decoding data and the second decoding data corresponding to the issued two-dimensional code;
An authentication processing means for reading out the requested two-dimensional code from the two-dimensional code registration means and collating the image image;
Decode processing means for decoding the color code of the two-dimensional code subjected to the authentication processing into first decoding data;
Data transfer means for returning the decoded data to the two-dimensional code imaging terminal via the Internet,
The decoding processing means includes conversion means for converting the color code into a monochrome binary code when the authentication receiving means receives a two-dimensional code of a monochrome multi-tone image from the two-dimensional code imaging terminal. A two-dimensional code system comprising an information processing server that decodes the second decoded data corresponding to the converted binary code. A boundary demarcating part that surrounds the target area with a continuous frame line, and a plurality of cells of various shapes with various colors arranged in a matrix at a predetermined position in the boundary demarcating part can be optically imaged In the code area part in which the area composed of the color code is arranged, and in the boundary demarcating part, the area other than the code area part is provided with a color that can be distinguished from the frame line at least in the background color, and an authentication process A two-dimensional code system that provides predetermined information by decoding a two-dimensional code having an image display unit that displays an image image that can be specified by feature data in order to perform
From the two-dimensional code imaging terminal that optically images the border line of the boundary defining portion of the two-dimensional code, the color code of the code region portion, and the image image of the image display portion, the two-dimensional code An authentication acceptance means for accepting an authentication request;
Data storage means for storing the issued two-dimensional code and the first decoding data and the second decoding data corresponding to the issued two-dimensional code;
An authentication processing means for reading out the requested two-dimensional code from the two-dimensional code registration means and collating the image image;
Decoding processing means for decoding the color code of the authenticated two-dimensional code into first decoding data;
Data transfer means for returning the decoded data to the two-dimensional code imaging terminal via the Internet,
The color code includes a black and white two-tone binary code that can be decoded into the second decoding data, and the decoding processing means is configured such that the authentication receiving means receives a black and white multi-level code from the two-dimensional code imaging terminal. 2. A two-dimensional code system comprising an information processing server that decodes only the binary code into the second decoding data when a two-dimensional code of a toned image is received.   When the authentication accepting unit accepts the two-dimensional code authentication request from the two-dimensional code imaging terminal using a color captured image and also receives a decoding processing request based on second decoding data, the decoding processing unit The two-dimensional code system according to claim 12 or 13, wherein the color picked-up image is converted into the monochrome binary code and decoded, or only the monochrome binary code is decoded.   The code area unit includes at least a data code to be decoded, and an error detection code that divides the data code into predetermined block units and assigns an error detection cell to each block. 13. The information processing server includes error detection correction means for detecting erroneous information with an error detection code from a captured image received by the authentication reception means, and specifying and correcting an error position. The two-dimensional code system according to any one of claims 1 to 14.   The binary code in the code area part is composed of at least a data code to be decoded and an authentication code for performing the authentication process, and when the binary code is decoded, The two-dimensional code system according to any one of claims 12 to 15, wherein the authentication processing means performs an authentication process with the authentication code without performing an authentication process with the image. Text data indicating the metadata of the first decoding data or the second decoding data is included on the image displayed on the image display unit of the two-dimensional code, and the storage means includes the first The metadata is stored in correspondence with coding data or second coding data. When the text data is imaged by the two-dimensional code imaging terminal and transmitted to the information processing server, the metadata is transmitted via the Internet network. The two-dimensional code system according to any one of claims 12 to 16, wherein data indicating the contents of the data is returned. The color code or binary code of the code area portion includes a linkage code in which one two-dimensional code comprehensively links other two-dimensional codes, and is stored in the data storage means. The first decoding data and the second decoding data include data indicating that the one two-dimensional code and another two-dimensional code are linked, and the authentication processing means 13. The authentication process for a two-dimensional code, and authenticating that the plurality of two-dimensional codes have a predetermined relationship with the one two-dimensional code by the linkage code. The two-dimensional code according to any one of up to 17 is a system.   A two-dimensional code authentication process having the linkage code, wherein the two-dimensional code imaging terminal stores the plurality of two-dimensional codes in an offline state, and then stores the plurality of two-dimensional codes online via an Internet network. 19. The two-dimensional code system according to claim 18, wherein when the two-dimensional code is requested to authenticate to the information processing server, the authentication processing means performs a badge process for the authentication processing.   The information processing server has composite image generation means for generating an image from the decoded data in order to synthesize and display an image on a real image obtained by capturing the two-dimensional code with the two-dimensional code imaging terminal. 20. The two-dimensional code system according to claim 12, wherein the data transfer unit transmits the composite image to the two-dimensional code imaging terminal.   The storage means stores a plurality of first decoding data or second decoding data according to a predetermined condition for one two-dimensional code, together with an authentication request from the two-dimensional code imaging terminal, Receiving status information, selecting the predetermined condition according to the status information, and having status detection means for reading the first decoding data or the second decoding data corresponding to the predetermined condition The two-dimensional code system according to any one of claims 12 to 20, wherein the two-dimensional code system is characterized.   The predetermined condition matches at least the position information of the two-dimensional code imaging terminal, time information at the time of the authentication request, access frequency information of the two-dimensional code imaging terminal, and a probability table set on the information processing server side. The two-dimensional code system according to claim 21, wherein the two-dimensional code imaging terminal is one of access information of the two-dimensional code imaging terminal and user attribute information transmitted through the two-dimensional code imaging terminal. A boundary demarcating part that surrounds the target area with a continuous frame line, and a plurality of cells of various shapes with various colors arranged in a matrix at a predetermined position in the boundary demarcating part can be optically imaged A code area part in which an area consisting of a code that can be converted into a black and white binary code or includes a black and white binary code is arranged, and in the boundary demarcation part, in an area other than the code area part, At least a background color is provided with a color that can be distinguished from the frame line, and an image display unit that displays an image image that can be specified by feature amount data in order to perform authentication processing. A two-dimensional code imaging terminal that requests a predetermined information processing server to decode a two-dimensional code,
An imaging unit that optically converts the two-dimensional code into a color or black-and-white multi-tone image and images, a display unit that displays the two-dimensional code to be imaged on a display, and the boundary demarcation unit is detected. Boundary detection means, direction detection means for specifying a direction for decoding the two-dimensional code in the code area portion, code detection means for detecting the color code and the image image, and the captured two-dimensional code Authentication request means for sending an authentication request by transmitting a color code and an image detected from the image to a predetermined information processing server; and receiving means for receiving data that has been authenticated by the information processing server and decoded from the color code And having
When the imaging unit captures the two-dimensional code in color, the receiving unit receives data decoded by the first decoding data, converts the data into a monochrome multi-tone image, and captures the image. The information processing server receives the data decoded from the converted image into the monochrome binary code or decoded by the second decoding data by selecting only the monochrome binary code. Code imaging terminal.   The imaging means includes illuminance detection means for detecting illuminance under the imaging environment of the two-dimensional code, and color conversion for converting to a monochrome multi-tone image when the detected illuminance is a predetermined threshold value or less. 24. The two-dimensional code imaging terminal according to claim 23, further comprising means for switching to infrared imaging.   The imaging means has selection means for converting the captured image into a black and white binary code or selecting only the black and white binary code portion as the authentication request image when the illuminance detection means is equal to or less than the predetermined threshold value. The two-dimensional code imaging terminal according to claim 24. A boundary demarcating part that surrounds the target area with a continuous frame line, and a plurality of cells of various shapes with various colors arranged in a matrix at a predetermined position in the boundary demarcating part can be optically imaged In the code area part in which the area composed of the color code is arranged, and in the boundary demarcating part, the area other than the code area part is provided with a color that can be distinguished from the frame line at least in the background color, and an authentication process An information processing method for providing predetermined information using a two-dimensional code having an image display unit that displays an image image that can be specified by feature amount data for performing
When the two-dimensional code is issued, the two-dimensional code and the first decoding data and the second decoding data are associated with each other in advance and stored in an information processing server; and the two-dimensional code is optically imaged A step of imaging with a possible two-dimensional code imaging terminal, a step of transmitting an authentication request for the captured two-dimensional code to an information processing server via the Internet, and an information processing server receiving the authentication request An authentication process step for matching with a pre-registered two-dimensional code based on image feature data, a step for decoding the two-dimensional code subjected to the authentication process into first decoding data, and the decoding process. Returning the obtained first decoding data to the two-dimensional code imaging terminal via the Internet network; Has,
When the two-dimensional code imaging terminal captures the two-dimensional code as a monochrome multi-tone image and makes the authentication request, the information processing server converts the received monochrome multi-tone image into a monochrome binary code. An information processing method comprising: converting, decoding the black and white binary code into the second decoding data, and returning the second decoding data to the two-dimensional code imaging terminal. A boundary demarcating part that surrounds the elephant area with a continuous frame line, and a plurality of cells with various colors arranged in a predetermined position in the boundary demarcating part can be arranged in a matrix and optically imaged In the code area part in which the area composed of the color code is arranged, and in the boundary demarcating part, the area other than the code area part is provided with a color that can be distinguished from the frame line at least in the background color, and an authentication process An information processing method for providing predetermined information using a two-dimensional code having an image display unit that displays an image image that can be specified by feature amount data for performing
When the two-dimensional code is issued, the two-dimensional code and the first decoding data and the second decoding data are associated with each other in advance and stored in an information processing server; and the two-dimensional code is optically imaged A step of imaging with a possible two-dimensional code imaging terminal, a step of transmitting an authentication request for the captured two-dimensional code to an information processing server via the Internet, and an information processing server receiving the authentication request registered in advance An authentication process step of reading out the two-dimensional code that has been read and collating the image, a step of decoding the two-dimensional code subjected to the authentication process into first decoding data, and a first obtained by the decoding process Returning the decoding data to the two-dimensional code imaging terminal via the Internet network,
The color code includes a monochrome two-tone binary code that can be decoded in the second decoding data, and the two-dimensional code imaging terminal picks up the two-dimensional code as a monochrome multi-tone image. When the authentication request is made, the information processing server decodes only the binary code into the second decoding data, and returns the second decoding data to the two-dimensional code imaging terminal. An information processing method characterized by the above.   The authentication processing normalizes the two-dimensional code requested for authentication to a predetermined size, divides the area excluding the code area portion, calculates a feature amount for each coordinate point of the mesh unit, and registers in advance 28. The information processing method according to claim 26, wherein a Hamming distance is obtained for each coordinate point corresponding to the feature amount of the two-dimensional code being used, and matching is performed on both. The code area unit is composed of at least a data code to be decoded and an error detection code that divides the data code into predetermined block units and assigns an error detection cell to each block,
27. The information processing server that has received the authentication request detects an erroneous block by using the error detection code, and specifies and corrects an error position from the detected block. The information processing method according to any one of claims 28 to 28.   27. The binary code includes an authentication code, and when decoding the binary code, the authentication process using the image is not performed but the authentication process is performed using the authentication code. 30. The information processing method according to any one of items up to item 29.

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