JP4978287B2 - Electronic device, two-dimensional code recognition method, program, and two-dimensional code - Google Patents

Description

  The present invention relates to an electronic device capable of recognizing a two-dimensional code, a two-dimensional code recognition method in the electronic device, a program, and a two-dimensional code.

  Conventionally, for example, a two-dimensional code printed on a card or paper medium is imaged with a camera, the code pattern is recognized from the captured image, and the code is as if a three-dimensional object exists on the two-dimensional code. There is a technique for displaying a CG (Computer Graphics) image corresponding to a pattern on a screen of a television or a PC (Personal Computer).

  Such a two-dimensional code is surrounded by a bar-shaped square region (reference cell), four corners (corner cell), a reference cell, and a corner cell, as described in Patent Document 1, for example. A two-dimensional code composed of a code part region is used. In Patent Document 1, a reference cell is first recognized from a captured image, and each corner cell is recognized with reference to the reference cell, and a code existing in the area of the code portion based on the corner cell. A two-dimensional code recognition processing device capable of detecting data is described. By using the reference cell and the corner cell, it is possible to define the position and direction of the code data.

JP 2000-82108 A (FIG. 4 etc.)

  However, when the two-dimensional code described in Patent Document 1 is used, the bar-shaped reference cell is required, and this reference cell occupies a large space on the two-dimensional code. For this reason, the freedom degree of design of a two-dimensional code, the paper on which it is printed, and a card medium will become low.

  In view of the circumstances as described above, an object of the present invention is to provide an electronic device, a two-dimensional code recognition method and program capable of improving the degree of freedom of design of a two-dimensional code, and a two-dimensional code having a high degree of freedom of design. Is to provide.

  In order to solve the above-described problem, an electronic apparatus according to a main aspect of the present invention is an electronic apparatus that recognizes a two-dimensional code, and includes a first area having a predetermined shape and the first area as a first area. The second, third, fourth and fifth are respectively arranged at the respective end points of the first line segment and the second line segment which are shared as the midpoint and have the first length, and have the predetermined shape, respectively. A first reference area defining a first recognition range in the two-dimensional code, and a first position having a predetermined relationship with the first area, and processed by the electronic device Image acquisition means for acquiring a captured image obtained by capturing the two-dimensional code having a first data area corresponding to the first data, and based on the predetermined shape from the acquired captured image Detecting means for detecting first to fifth regions; First detection means for determining whether the detected first area is within a predetermined distance from each of the first and second line segments; and the first area is the predetermined distance. A first ratio between a first distance between the first and second regions and a second distance between the first and third regions when determined to be within a range of It is determined whether a second ratio between the third distance between the first and fourth regions and the fourth distance between the first and fifth regions is within a predetermined ratio range. And when the first and second ratios are determined to be within the range of the predetermined ratio, the first recognition range includes the first data area and the first ratio. Recognition means for recognizing data.

  In this configuration, the first determination unit has the first to third regions substantially on the first line segment, and the first, fourth, and fifth regions have the substantially second line. It can be determined that it exists on the minute. In addition, the second determination means causes the first region to be a substantially midpoint of the first line segment having the second and third regions as both end points, and the fourth and fifth regions to be both end points. It can be determined that the approximate middle point of the second line segment. Therefore, according to the above configuration, a two-dimensional code composed of a reference region having five regions arranged around one region and a data region is used, and the imaging direction is relative to the two-dimensional code. It is possible to recognize the first data corresponding to the data area with high accuracy even in the oblique direction as well as in the vertical direction. As a result, the area occupied by the reference area in the code is reduced compared to the conventional two-dimensional code that recognizes the code using, for example, each square area at the four corners and the bar-shaped square area as the reference area. The degree of freedom in design can be improved. For example, it is possible to print other pictures and the like together with the code.

  Here, the predetermined shape is a circle, a regular polygon, or the like, and may be different from or the same as the shape of the data area. The predetermined distance is, for example, 3 pixels, and the predetermined ratio range is, for example, a range of 1: 1.1 to 1.1: 1. The electronic device refers to any stationary or portable electronic device such as a game device, a PC, a television receiver, other AV (Audio / Video) devices, and a mobile phone. The first data is, for example, 3D image data such as game characters and buildings, 2D image data such as photographs, text data, command data for executing various applications, and the like.

  The electronic apparatus includes: a calculation unit that calculates an angle formed by the first line segment and the second line segment from the captured image; and whether the calculated angle is within a predetermined angle range. And a third judging means for judging whether or not, wherein the recognizing means recognizes the first data when it is judged that the angle is within a predetermined angle range. .

  Here, the above-mentioned angle means, for example, an acute angle among the angles formed by the first line segment and the second line segment, and the range of the predetermined angle is, for example, 20 degrees to 30 degrees to 90 degrees. However, it is not limited to this range. Further, the range of the obtuse angle may be 90 degrees or more and 150 degrees to 160 degrees, for example. Thereby, by determining whether or not the angle formed by the first line segment and the second line segment is within a predetermined angle range, the shape formed by the first to fifth regions can be further accurately determined. Can be recognized.

  In the electronic apparatus, the first data is image data, and the recognizing unit recognizes the image data from the first data area, and stores the second to fifth areas on the image data. The electronic apparatus may further include drawing means for recognizing each coordinate data and drawing the recognized image data at a drawing position and a drawing direction based on each recognized coordinate data.

  Accordingly, since image data can be drawn based on the coordinate data of the second to fifth areas, a two-dimensional code for causing the electronic device to draw a three-dimensional image or a two-dimensional image in an arbitrary direction. Can be designed with a high degree of freedom.

In this case, the first data area has an error detection area for error detection,
The recognizing means uses the reference direction in which no error is detected in the error detection area when the first data area is decoded with the directions in which the second to fifth areas exist as reference directions. The coordinate data may be recognized.

  This makes it possible to reliably recognize the drawing direction of the image data without providing a bar-shaped square area as in the prior art. Can be improved.

  In the electronic apparatus, the two-dimensional code is a second reference area that shares the first and second areas with the first reference area, and the second area is a second midpoint. The sixth region having the predetermined shape is disposed at the other end of the third line segment having the first region as one end, and the second midpoint is shared with the third line segment. In the two-dimensional code, and the seventh and eighth regions respectively arranged at the end points of the fourth line segment parallel to the second line segment and having the predetermined shape. A second reference area that defines a second recognition range; a second reference area that corresponds to second data that is disposed at a second position having the predetermined relationship with the second area and that is processed by the electronic device; Two data areas, and the detection means is configured to detect the first based on the predetermined shape from the captured image. The sixth to eighth regions are detected together with the second region, and the first determining means detects the second region within the predetermined distance from each of the third and fourth line segments. The second determination means determines whether the second area is within the range of the predetermined distance, and the second determination means determines whether a second area between the second and sixth areas is present. And a third ratio of the sixth distance between the second and first regions, and a seventh distance between the second and seventh regions and between the second and eighth regions. It is determined whether the fourth ratio to the eighth distance is within the predetermined ratio range, and the recognizing unit determines that the third and fourth ratios are within the predetermined ratio range. When it is determined that there is, the second data may be recognized from the second data area in the second recognition range.

  As a result, the first and second areas of the first reference area centered on the first area can be shared with the second reference area centered on the second area. While suppressing the area as much as possible, a large amount of data can be recognized with one two-dimensional code.

  In this case, the two-dimensional code is arranged at a second position having the predetermined relationship with the second area, and a second data area corresponding to the second data processed by the electronic device is stored. The electronic device stores first identification information for identifying the first region in association with the first data, and stores second identification information for identifying the second region. Storage means for storing the data in association with the second data, wherein the recognition means recognizes the first data and the second data from the first data area and the second data area, respectively. Confirming the authenticity of the recognized first data by comparing the first identification information corresponding to the first data and the second identification information corresponding to the recognized second data You may make it.

  Here, the second area may be replaced with any one of the third to fifth areas. As a result, not only the first data is recognized from the first area, but also the first area is compared with the identification information of the area existing around the first area. Therefore, the recognition accuracy of the first data can be improved and erroneous recognition can be prevented.

  In the electronic device, the two-dimensional code is a second reference area that shares the first area with the first reference area, and the first area is shared as a second midpoint. At each end point of the third line segment and the fourth line segment having a second length different from the first length and existing on the same straight line as the first line segment and the second line segment, respectively. A second reference region that is arranged, has a sixth region, a seventh region, an eighth region, and a ninth region, each having the predetermined shape, and that defines a second recognition range in the two-dimensional code; And a second data area corresponding to second data to be processed by the electronic device, and the detection means includes the captured image. To the sixth region to the ninth region together with the first region based on the predetermined shape. An area is detected, and the first determination means determines whether the second area exists within the predetermined distance from the third and fourth line segments, and the second area The determining means includes a third ratio between a fifth distance between the first and sixth regions and a sixth distance between the first and seventh regions, and between the first and eighth regions. The fourth ratio of the seventh distance and the eighth distance between the first and ninth regions is within the predetermined ratio, respectively, and the recognition means When it is determined that the third and fourth ratios are within the predetermined ratio range, the second data is recognized from the second data area in the second recognition range. Good.

  Thereby, since the second data can be recognized based on the second reference region existing inside or outside the first reference region while sharing the first region, the area occupied by the code is suppressed as much as possible. A multi-scale code that can be recognized from a plurality of different distances can be constructed, and a larger amount of data can be recognized with one two-dimensional code.

  In the electronic apparatus, the first data area may be present inside the first area.

  Thereby, the data area can be arranged without increasing the number of areas than the number of reference areas. Therefore, the number of detection candidates and recognition candidates when the reference area is detected and the data area is recognized is reduced, and the detection speed and the recognition speed can be improved.

  In the electronic apparatus, the first line segment and the second line segment may be orthogonal to each other.

  As a result, the first reference area forms a cross shape by the first to fifth areas. Therefore, a plurality of other reference regions can be arranged so as to be spread uniformly with the first reference region, and a larger amount of data can be obtained while efficiently using the arrangement space without impairing the degree of freedom of design. Can be recognized.

  In the electronic apparatus, the second to fifth regions form four of six vertices of a regular hexagon centered on the first region, and the first and second line segments are It may be two of three diagonal lines passing through the center of the regular hexagon.

  As a result, a plurality of reference regions other than the first reference region can be laid out so as to form a plurality of hexagons together with the first reference region, and the arrangement space can be efficiently used without impairing the degree of freedom of design. However, a larger amount of data can be recognized.

  In the electronic apparatus, the predetermined shape may be a circle.

  As a result, even when the imaging angle of the two-dimensional code is inclined, the circular shape is only imaged as an ellipse, and the shape change due to the imaging angle is small compared to other shapes such as a square. The detection accuracy of the area 5 can be improved.

  A two-dimensional code recognition method according to another aspect of the present invention is a method in which an electronic device recognizes a two-dimensional code, and includes a first area having a predetermined shape and the first area as a first midpoint. Second, third, fourth, and fifth regions that are respectively disposed at the respective end points of the first line segment and the second line segment having the first length and having the predetermined shape, respectively The first reference area defining the first recognition range in the two-dimensional code and the first position having a predetermined relationship with the first area are processed by the electronic device A captured image obtained by capturing the two-dimensional code having a first data area corresponding to first data is acquired, and the first to fifth are acquired based on the predetermined shape from the acquired captured image. A region is detected, and the detected first region is the first and second regions. It is determined whether or not each of the second line segments is within a predetermined distance range, and when it is determined that the first area is within the predetermined distance range, the first and second areas A first ratio between a first distance between and a second distance between the first and third regions, a third distance between the first and fourth regions, and the first and fifth It is determined whether the second ratio to the fourth distance between the regions is within a predetermined ratio range, and the first and second ratios are within the predetermined ratio range. When it is determined, the first data is recognized from the first data area in the first recognition range.

  A program according to another aspect of the present invention shares a first area having a predetermined shape with an electronic device that recognizes a two-dimensional code, and the first area as a first midpoint. A second line, a third line, a fourth line, and a fifth area, each of which is arranged at each end point of the first line segment and the second line segment having a length and has the predetermined shape, and the two-dimensional A first reference area that defines a first recognition range in the code, and a first position that is arranged at a first position having a predetermined relationship with the first area, and corresponds to first data that is processed by the electronic device Acquiring a captured image obtained by capturing the two-dimensional code having a first data area; and detecting the first to fifth areas based on the predetermined shape from the acquired captured image. And the detected first region is the Determining whether or not each of the first and second line segments is within a predetermined distance range, and determining that the first region is within the predetermined distance range; A first ratio between a first distance between a second region and a second distance between the first and third regions; a third distance between the first and fourth regions; Determining whether the second ratio to the fourth distance between the first and fifth regions is within a predetermined ratio range, and the first and second ratios to the predetermined ratio. And the step of recognizing the first data from the first data area in the first recognition range when it is determined that the first data area falls within the range.

  A two-dimensional code according to another aspect of the present invention is a two-dimensional code recognized by an electronic device, and is shared with a first area having a predetermined shape and the first area as a first midpoint. The second, third, fourth, and fifth regions respectively having the predetermined shape are disposed at the respective end points of the first line segment and the second line segment each having the first length. And a first reference area that defines a first recognition range in the two-dimensional code, and a first position that has a predetermined relationship with the first area and is processed by the electronic device. And a first data area corresponding to the data.

  As described above, according to the present invention, it is possible to provide an electronic device, a two-dimensional code recognition method and program, and a two-dimensional code with a high degree of design freedom that can improve the degree of freedom of design of the two-dimensional code. be able to.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram illustrating a usage mode of a game machine according to an embodiment of the present invention. As shown in the figure, the game machine 1 is electrically connected to the monitor 2 and the camera 3 by, for example, a cable. A card 4 on which a two-dimensional code 5 is printed is placed in the placement space 8 in front of the monitor 2.

  The game device 1 displays a game image on the monitor 2 and executes the game program in accordance with a user operation or the like. The monitor 2 is, for example, a liquid crystal television or a liquid crystal display device. The camera 3 captures the captured image as a captured image by capturing an image of the card 4 placed in the mounting space 8 with an image sensor such as a CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor). Supply to the game machine 1. The game machine 1 recognizes the pattern of the two-dimensional code 5 printed on the card 4 included in the captured image, and executes processing corresponding to the pattern. For example, as shown in the figure, the game machine 1 places a three-dimensional image of a CG object 6 such as a game character corresponding to the pattern on the two-dimensional code 5 in the captured image 7 supplied from the camera 3. The image is superimposed and displayed on the monitor 2.

  The card 4 may be made of any material such as paper, plastic, metal, etc., as long as printing is possible. As the shape of the card, any shape such as a circle, a square, a rectangle, or another polygon can be applied.

  Next, the two-dimensional code 5 will be described. FIG. 2 is a diagram showing the two-dimensional code 5. As shown in the figure, the two-dimensional code 5 in the present embodiment has a plurality of guide areas 51 (51a, 51b,...) That are circular black connection areas, and a rectangular shape that exists inside each guide area 51. It is comprised by the data area | region 52 (52a, 52b ...) which is a white connection area | region.

  The guide area 51 is an area serving as a reference in the code recognition process by the game device 1 and is arranged on the matrix. In the present embodiment, the two-dimensional code 5 has a total of 81 guide areas 51 of 9 (rows) × 9 (columns), but is not limited to this number. Moreover, the area of each guide area | region 51 does not need to be the same. In the present embodiment, the two-dimensional code 5 has three types of guide regions 51 having different areas. Specifically, the two-dimensional code 5 includes nine guide areas 51 (for example, guide areas 51a) having a maximum area and 16 guide areas 51 (for example, guide areas) having a quarter of the maximum area. 51b) and 56 guide regions 51 (for example, guide regions 51j) having an area of 1/16 of the maximum area. In the following description, the guide areas 51 having these three types of areas may be referred to as a large guide area 511, a middle guide area 512, and a small guide area 513 in order of increasing area, and the areas may be distinguished. .

  The two-dimensional code 5 has a cross shape with one guide region 51 (for example, guide region 51a) and four guide regions (for example, guide regions 51b to 51e) arranged vertically and horizontally around the one guide region. Each of the five guide areas 51 and the data area 52 (for example, 52a-1) arranged inside the guide area 51 serving as the center has one unit code. A plurality of codes (hereinafter, referred to as code sets 53 (53a, 53b,...)) Are laid out to constitute the matrix. Each code set 53 defines a recognition range at the time of code recognition processing by the game device 1 and a drawing direction and a drawing position (coordinates) in the drawing processing of the CG object 6. As the five guide regions 51 constituting each cord set 53, the large guide region 511, the middle guide region 512, and the small guide region 513 may be mixed.

  The data area 52 is arranged inside the guide area 51 located at the center of each code set 53, for example, along the circumference of the guide area 51, and is associated with the image data constituting the CG object 6 respectively. Yes. Further, the data area 52 has different positions (coordinates of the guide area 51 that is the center of each code set 53) and ranges (coordinates of each code set 53) in one CG object 6 in the coordinate system in which the CG object 6 is drawn. Size). Further, each data area 52 is associated with an ID for identifying (the position of) each guide area 51 having the data area 52. Specifically, for example, IDs 1, 2, 3,..., 9 are sequentially assigned to the nine guide areas 51 in the first row (top row) of FIG. The nine guide areas 51 in the second row are also assigned IDs 11, 12, 13,... 19 in order from the leftmost column. That is, an ID of 10 (n−1) + m (1 ≦ n ≦ 9, 1 ≦ m ≦ 9) is assigned to the nth and mth column of the guide region 51, and each ID is assigned to each guide region 51. Corresponding to each data area 52.

  The data area 52 is associated with, for example, 36-bit data, of which, for example, 24 bits are allocated to the image data and position and range data, and the remaining 12 bits are code recognition. It is assigned as an error detection bit for detecting an error at the time of error. In addition, the data area 52 is rectangular because the data area 52 is smaller than the guide area 51, so that the area is made as large as possible so that the data area 52 does not collapse when captured by the camera 3. It is to make it.

  Each cord set 53 may share one or a plurality of guide regions 51 with another cord set 53 adjacent in the up / down / left / right or diagonal directions. For example, the code set 53a composed of the guide areas 51a to 51e shares the guide areas 51a and 51b with the code set 53d located on the left side thereof. That is, the cord set 53d has the guide region 51a located at the center of the code set 53a as the right guide region, and has the guide region 51b located at the left side as the center guide region in the code set 53a. is doing.

  Each cord set 53 includes five guide regions 51 constituting the code set 53 depending on how many other guide regions 51 exist between the upper, lower, left, and right guide regions 51 and the central guide region 51. Sorted into three sizes. Specifically, a cord set 53 (in this embodiment, only the cord set 53b) having the upper, lower, left, and right guide regions 51 at positions where three other guide regions 51 are placed from the center guide region 51, and the center A code set 53 (for example, code sets 53a and 53d) having upper, lower, left and right guide areas 51 at positions where one other guide area 51 is placed from the guide area 51, and any other guide area from the central guide area 51. A code set 53 (for example, code sets 53c and 53e) having upper, lower, left, and right guide regions 51 at positions directly adjacent to each other without placing 51. That is, the two-dimensional code 5 is a multi-scale code in which code sets 53 having different sizes are arranged even in the same cross shape. Different positions and ranges of one CG object 6 are associated with the data area 52 of each code set 53. As a result, it is possible to display the whole of one CG object 6 with one two-dimensional code 5 or to display a part of the CG object 6 in an enlarged manner. In the following description, these three types of code sets 53 may be referred to as a large code set 531, a medium code set 532, and a small code set 533 in descending order, and the sizes may be distinguished.

  Note that the large code set 531 is composed of all large guide areas 511, and the medium code set 532 is composed entirely of medium guide areas 512, or is composed of medium guide areas 512 and large guide areas 511. The set 533 is composed of a small guide region 513 or a small guide region 513 and a large guide region 511 and / or a middle guide region 512.

  Further, the large code set 531, the medium code set 532, and the small code set 533 may share one guide area 51 as the central guide area 51. In this case, a different data area 52 is provided for each code set 53 in the guide area 51 which is the center of each code set 53.

  For example, a code set 53a composed of guide areas 51a to 51e, a code set 53b composed of guide areas 51a and 51f to 51i, and a code set 53c composed of guide areas 51a and 51j to 51m are respectively guides. The region 51a is shared as the central guide region 51. In this case, a data area 52a-1 corresponding to the code set 53a, a data area 52a-2 corresponding to the code set 53b, and a code set 53c are provided in the guide area 51a which is the center of each code set 53. Data areas 52a-3 to be concentrically provided. In this case, since the positions of the guide areas 51 to be identified by the data areas 52a-1 to 52a-3 are the same position, the same IDs are associated with the data areas 52a-1 to 52a-3. On the other hand, since each data area 52a-1 to 52a-3 is associated with a code set 53 having a different size, it is different with respect to the same position (coordinates) in one CG object 6. A range (size of each code set 53) is associated.

  When there are a plurality of data areas in one guide area 51 as described above, the positions of the data areas corresponding to the code sets 53 having different sizes are set as, for example, the upper, lower, left, and right guide areas 51. It is defined based on the positional relationship. Accordingly, it is possible to appropriately distinguish and read each data area 52 arranged in one guide area 51 for each code set 53 having a different size.

  Next, the configuration of the game machine 1 will be described. FIG. 3 is a block diagram showing the configuration of the game machine 1. As shown in the figure, the game machine 1 includes a CPU (Central Processing Unit) 11, a ROM (Read Only Memory) 12, a RAM (Random Access Memory) 13, an operation input unit 14, a storage unit 15, a communication unit 16, a drive. 17, an input interface 21, a code recognition unit 22, a display control unit 23, and an output interface 24.

  The CPU 11 appropriately accesses the ROM 12, RAM 13, etc. as necessary to perform various arithmetic processes, and comprehensively controls each block in the game process executed by the game device 1. The ROM 12 is a non-volatile memory in which an OS to be executed by the CPU 11, firmware such as programs and various parameters are fixedly stored. The RAM 13 is a memory that is used as a work area for the CPU 11 and temporarily stores an OS, a program, data necessary for game processing, and the like.

  The operation input unit 14 includes input devices such as a keyboard, a mouse, a joystick, and keys. The operation input unit 14 inputs various commands and setting values by user operations in game processing and other processing, and outputs them to the CPU 11. The operation input unit 14 may function as a remote controller operated by the user and may be connected to the game device 1 by wire or wirelessly.

  The storage unit 15 is configured by a recording medium such as a hard disk drive (HDD) or a flash memory, for example, stores various information such as programs and data executed by the CPU 11, and supplies the information to the CPU 11 as necessary. . The storage unit 15 also stores each ID of each guide region 51 of the two-dimensional code 5 described above, image data constituting the CG object 6 corresponding to each data region 52 corresponding to each guide region 51, and its position ( Coordinate) data and range data are stored in association with each other. Further, the storage unit 15 captures the captured image 7 from the camera 3, recognizes the ID of each guide region 51 and the position data and range data of the CG object 6 from each data region 52, and performs CG based on these data. A code recognition application responsible for a series of processes until the object 6 is drawn is stored.

  The communication unit 16 communicates with electronic devices such as other game devices under the control of the CPU 11 and transmits / receives information such as various data and programs. The drive 17 drives the mounted removable medium 18 to read a game program stored in the removable medium 18 and supplies the program data to the CPU 11 for execution. Examples of the removable medium 18 include an optical disc such as a CD (Compact Disc) and a DVD (Digital Versatile Disc), a magnetic optical disc such as an MD (Mini-Disk), or a semiconductor memory such as a memory stick.

  The input interface 21 connects the game machine 1 and an external device based on a predetermined standard such as USB (Universal Serial Bus) or IEEE (Institute of Electrical and Electronics Engineers) 1394, and receives information supplied from the external device. It is an interface for supplying to the game machine 1. As shown in the figure, in this embodiment, the input interface 21 is connected to the camera 3, and supplies the captured image 7 supplied from the camera 3 to the code recognition unit 22.

  The code recognition unit 22 performs processing for recognizing the two-dimensional code 5 from the captured image 7 of the camera 3 acquired through the input interface 21 under the control of the CPU 11 and execution of the code recognition application. When the code recognition unit 22 recognizes the two-dimensional code 5, the code recognition unit 22 supplies the recognition result to the CPU 11. Details of the code recognition process will be described later.

  The display control unit 23 has a buffer memory (not shown) such as a VRAM (Video RAM) under the execution of the code recognition application, and performs processing for generating an image to be displayed on the monitor 2. For example, as described above, the display control unit 23 superimposes the CG object 6 such as a game character on the two-dimensional code 5 in the captured image 7 supplied from the camera 3 and supplies the superimposed image to the output interface 24. To do.

  The output interface 24 is connected to an external device such as the monitor 2 and is an interface for supplying image data and the like supplied from the display control unit 23 to the external device. In the present embodiment, the output interface 24 supplies the superimposed image data supplied from the display control unit 23 to the monitor 3 at a predetermined timing.

  Next, the operation of the game machine 1 configured as described above will be described.

  First, the operation when the game machine 1 recognizes the two-dimensional code 5 will be described. FIG. 4 is a flowchart showing the flow of recognition processing for the two-dimensional code 5.

  As shown in the figure, when the card 3 is imaged by the camera 3 in a state where the code recognition application is activated, first, the code recognition unit 22 of the game machine 1 is connected from the camera 3 via the input interface 21. The captured image 7 is acquired (step 41). Subsequently, the code recognition unit 22 performs binarization processing on the captured image 7 (Step 42), and extracts a black connected region from the binarized image (Step 43). Then, the code recognition unit 22 selects five circular ones having a predetermined size (that is, the guide region 51) among the extracted black connected regions (step 44). Specifically, the code recognizing unit 22 analyzes the size and aspect ratio of the outer frame portion of each black connection region, and selects the one having a size in a predetermined range and not being longer than a predetermined threshold. . In the figure, the five selected guide areas are referred to as guide areas A to E.

  When the combination of the five guide areas A to E is found (Yes in step 45), the code recognition unit 22 determines whether or not the five guide areas A to E form a cross shape. .

  Specifically, first, the code recognition unit 22 determines whether or not the center of the guide area A exists at a position within a predetermined distance d from the line segment BC connecting the centers of the guide areas B and C. (Step 46). That is, the code recognizing unit 22 determines whether or not the centers of the guide areas A, B, and C are arranged on substantially the same straight line. The predetermined distance d in this case is, for example, 3 pixels, but is not limited thereto.

  When it is determined that the guide area A exists at a position within the predetermined distance d from the line segment BC (Yes in step 46), the code recognition unit 22 determines that the guide area A is between the guide areas B and C. And the ratio of the distance BA between the centers of the guide area B and the guide area A and the distance AC between the centers of the guide area A and the guide area C falls within a predetermined ratio range. It is determined whether or not (step 47). FIG. 5 is a diagram conceptually illustrating the determination method. In FIG. 5A, five black ellipses are five guide areas A to C (guide areas 51a) selected in step 44 from the captured image 7 obtained by capturing the two-dimensional code 5 from the oblique direction with the camera 3. ~ 51e). For convenience of explanation, the data area 52 is not shown in the figure.

  As shown in the figure, the code recognizing unit 22 determines the length of the line segment b connecting the centers of the guide area B (51b) and the guide area A (51a), the guide area A (51a), and the guide area C ( It is determined whether or not the ratio b: c to the length of the line segment c connecting each center with 51c) falls within the range of 1: n to n: 1. That is, the code recognizing unit 22 determines whether or not the guide regions B, A, and C are arranged at substantially equal intervals by this process. Here, n is 1.1, for example, but is not limited thereto. Note that the lengths of the line segments b and c are measured by measuring the distance from the origin to the coordinates of the centers of the guide areas B and C, for example, in the coordinate system on the captured image 7 with the center coordinates of the guide area A as the origin. Is calculated by

  Thus, by providing a restriction on the ratio of the distances between the guide regions, it is possible to remove the black regions that cannot be seen as the cross-shaped code set 53 as shown in FIG.

  Returning to FIG. 4, when it is determined that the ratio b: c is within the range of 1: n to n: 1 (Yes in Step 47), the code recognition unit 22 performs the same as in Step 46. Then, it is determined whether or not the guide area A exists at a position within the predetermined distance d from the line segment DE connecting the centers of the guide areas D and C (step 48). That is, the code recognition unit 22 determines whether or not the centers of the guide areas A, D, and E exist on substantially the same straight line.

  When it is determined that the guide area A exists at a position within the predetermined distance d from the line segment DE (Yes in step 48), the code recognition unit 22 determines that the guide area A is the same as in step 47 above. The ratio between the distance DA between the centers of the guide area D and the guide area A and between the centers of the guide area D and the guide area A and the distance AE between the centers of the guide area A and the guide area E is: It is determined whether or not the predetermined ratio is entered (step 49). That is, as shown in FIG. 5A, the code recognition unit 22 determines the length of the line segment d connecting the centers of the guide area D (51d) and the guide area A (51a) and the guide area A (51a). Whether or not the ratio d: e of the length of the line segment e connecting the centers of the guide region E (51e) and the guide region E (51e) falls within the above-mentioned range of 1: n to n: 1 (n is 1.1, for example). And whether or not the guide areas D, A, and E are arranged at almost equal intervals is determined.

  Returning to FIG. 4, when it is determined that the ratio d: e is within the range of 1: n to n: 1 (Yes in step 49), the code recognition unit 22 determines that the line segment BC and the line segment It is determined whether or not the narrower angle θ among the angles formed with DE is equal to or greater than a predetermined angle t (90 ° or less) (step 50). Here, t is 20 ° to 30 °, but is not limited to this range.

  FIG. 6 is a diagram illustrating a method for determining the angle θ. For convenience of explanation, the data area 52 is not shown in FIG. As shown in FIG. 6A, the above θ is, for example, when the vectors AD and AC with the center of the guide area A as the start point and the centers of the guide areas D and C as the end points are d and c, respectively. It is calculated based on the inner product of these two vectors d and c.

  That is, if the inner product of the vector d and the vector c is <d, c>, cos θ is represented by cos θ = <d, c> / | d || c |. Therefore, the code recognizing unit 22 determines whether or not the value of cos θ satisfies 0 ≦ | cos θ | ≦ 0.87 (cos 30 °) to 0.94 (cos 20 °). The inner product can be calculated from the coordinates of the centers of the guide areas D and C calculated in FIG. For example, as shown in FIG. 5B, in a situation where the imaging angle of the camera 3 with respect to the surface of the card 4 is extremely small (a situation where the θ is extremely collapsed), even if the two-dimensional code 5 is recognized. Since the accuracy (particularly in position) is not obtained, the recognition accuracy can be improved by providing a restriction by the angle t.

  Through the above processing, the code recognition unit 22 can detect one code set 53 by confirming that the extracted five black connected regions (guide regions A to E) form a cross shape. it can.

  Returning to FIG. 4, when it is determined that the angle θ is equal to or greater than t (Yes in Step 50), the code recognition unit 22 determines the recognition direction in the detected code set 53. That is, in the detected code set 53, the code recognizing unit 22 determines which of the four guide areas B to E existing around the guide area A is the “upper” side of the upper, lower, left, and right sides. to decide.

  Specifically, when the code recognition unit 22 regards each of the guide areas B to E as “upper” and decodes the data area 52 inside the guide area A, the code recognition unit 22 determines that the direction has been correctly decoded. Judged to be “up”. As described above, each data area 52 includes not only bits corresponding to the image data, position and range data of the CG object 6, but also error detection bits. Therefore, when the code recognizing unit 22 tries to decode the white rectangular area at a predetermined position in the data area 52 as a start position, the error is detected by this error detection bit, so that the decoding direction is incorrect. Can be judged.

  That is, first, the code recognition unit 22 regards the guide area B as “upper” and decodes the data area 52 arranged inside the guide area A (step 51). The code recognizing unit 22 recognizes a predetermined position in the recognized code set 53 (a position within the central guide area 51 and advanced from the coordinates of the upper, lower, left, and right guide areas 51 by a predetermined distance from the center. The rectangular white connected area existing in () is regarded as the data area 52 and decoding is performed. If the data cannot be correctly decoded (No in Step 52), the code recognition unit 22 then regards the guide area C as “up” and decodes the data area 52 (Step 53). If the data cannot be correctly decoded (No in step 54), the code recognition unit 22 then decodes the data area 52 by regarding the guide area D as “up” (step 55). If the code cannot be correctly decoded (No in step 56), the code recognition unit 22 regards the guide area E as “upper” and decodes the data area 52 (step 57).

  The code recognition unit 22 regards any of the above guide areas as “upper” and decodes it. If the code recognition unit 22 can decode correctly (Yes in steps 52, 54, 56, and 58), the code recognition unit 22 correctly decodes the decoded data. The coordinates on the two-dimensional code 5 of the four upper, lower, left, and right guide regions B to E are calculated and output with reference to the generated direction. Here, the contents of the decoded data include the coordinates of the center of the guide area A on the two-dimensional code 5, the size (range) of the code set 53 centered on the guide area A, and the guide as described above. This is the ID of area A. The coordinates of the guide areas B to E are the coordinates of the guide areas B to E in the coordinate system on the captured image 7 calculated when obtaining the lengths of the line segments b to e in FIG. Based on the coordinates of the guide area A recognized from 52 and the direction that has been correctly decoded, it can be calculated by converting to the coordinate system on the two-dimensional code 5.

  If the code recognizing unit 22 does not correctly decode the error by detecting any of the above guide areas as “up” (No error is detected in Step 58), the code recognizing unit 22 returns to Step 44 and performs a new operation. A combination of black connected regions is detected.

  In step 45, when there is no new combination of black connected regions (all combinations have been tried), the code recognition unit 22 outputs a result that no code exists on the captured image 7. (Step 60). When a plurality of combinations of five black connected regions to be selected (that is, the code set 53) are detected, the code recognition unit 22 recognizes the code set 53 recognized immediately before that. When the code set 53 recognized immediately before does not exist, the code set 53 closer to the center in the captured image 7 is preferentially recognized.

  Through the above processing, the code set 53 constituting the cross shape can be detected, and the data in the data area 52 of the code set 53 can be recognized from the correct direction.

  In the present embodiment, when the code recognizing unit 22 recognizes data from the data area 52 inside the guide area A, the code recognizing unit 22 also performs additional operations from the data areas 52 inside the guide areas B to E adjacent in the vertical and horizontal directions. Recognizable information. FIG. 7 is a flowchart showing the flow of processing when recognizing this additional information. FIG. 8 conceptually shows a process for recognizing this additional information. In FIG. 8, the black dots indicate the guide areas 51, and the numbers on the upper left of the black dots indicate the IDs of the guide areas 51.

  As shown in FIG. 7, the code recognizing unit 22 performs the processing up to step 58 in FIG. 4 and then the data area 52 (for example, the guide area 51 (for example, the guide area 51a in FIG. 2)) to be recognized. The ID of the guide area 51 is recognized from the data area 52a-1) in FIG. 2 (step 71). Subsequently, the code recognizing unit 22 includes four guide areas 51 (upper, lower, left, and right) constituting the code set 53 centering on the guide area 51 as the recognition target (for example, guide areas 51b to 51 constituting the code set 53a in FIG. 2). The IDs of the upper, lower, left and right guide areas 51 are recognized from the data areas 52 of 51e) (step 72).

  Since the code recognizing unit 22 has already grasped the positions of the upper, lower, left, and right guide areas 51 in the processing of steps 44 to 50 in FIG. I can grasp it.

  Returning to FIG. 7, the code recognition unit 22 can recognize each ID of the left and right guide areas 51 when three or more IDs of the upper, lower, left and right guide areas 51 can be recognized (No in step 73). Or whether each ID of the upper and lower guide areas 51 can be recognized (step 74). When the IDs of the left and right guide areas 51 (for example, the guide areas 51b and 51c in FIG. 2) can be recognized, the ID of the recognized center guide area 51 is n, and the ID of the left guide area 51 It is determined whether the ID is “nm” and the ID of the right guide area 51 is “n + m” (step 75).

  When the IDs of the upper and lower guide areas 51 (for example, the guide areas 51d and 51e in FIG. 2) can be recognized, the ID of the upper guide area 51 is “n−10 m” and the ID of the lower guide area 51 Is determined to be “n + 10 m” (step 77).

  By this process, the code recognition unit 22 determines how many other guide areas 51 exist between the central guide area 51 and the upper, lower, left, and right guide areas 51 in the recognized code set 53, that is, It can be determined whether the currently recognized code set 53 is the large code set 531, the medium code set 532, or the small code set 533.

  That is, as shown in FIG. 8, for example, when n = 45, if the IDs of the upper, lower, left, and right guide regions 51 are 35, 55, 44, and 46 (in this case, m = 1), the code It can be determined that the code set 53 recognized by the recognition unit 22 is the small code set 533. If the IDs of the upper, lower, left, and right guide regions 51 are 25, 65, 43, and 46 (in this case, m = 2), the code set 53 recognized by the code recognition unit 22 is the middle code set 532. It can be judged.

  In this way, the respective IDs of the upper, lower, left, and right code areas 51 are recognized, and whether or not the relational expression of n and m is satisfied is confirmed, thereby confirming the credibility of the data of the recognized center guide area 51. It can be confirmed, and erroneous recognition of data can be prevented.

  Returning to FIG. 7, when the IDs of the upper and lower or left and right guide regions 51 satisfy the relational expression n and m in step 75 or 77 (Yes in step 75 or 77). Assuming that the data of the central guide area 51 is also correct, the recognized data, the values of n and m, and the coordinates of the upper, lower, left and right guide areas 51 are output (step 76).

  On the other hand, the code recognizing unit 22 recognizes when the IDs of the upper and lower or left and right guide regions 51 do not satisfy the relational expression of n and m in Step 75 or 77 (No in Step 75 or 77). Assuming that the data is incorrect data, the process returns to step 44 in FIG. 4 to detect a new candidate for the black connected region (guide region 51).

  Next, a process until the code recognition application draws the CG object 6 based on the data recognized from one code set 53 as described above will be described. FIG. 9 is a flowchart showing the flow of the drawing process.

  As shown in FIG. 4, the code recognition application acquires the captured image 7 from the camera 3 and reads it on the VRAM of the display control unit 23 (step 81), as described in FIG. Data is recognized from the data area 52 of the guide area 51 at the center of the set 53, and the four coordinates of the upper, lower, left, and right guide areas 51 of the center guide area 51 are recognized (step 82).

  When the data and the four coordinates can be recognized (Yes in Step 83), the code recognition application calculates the three-dimensional position of the CG object 6 based on the four coordinates of the upper, lower, left, and right guide regions 51 (Step 83). 84). That is, the code recognition application calculates the three-dimensional position of the CG object 6 with the plane where the four coordinates exist as the bottom surface of the CG object 6 and the four coordinates as the end portions in the vertical and horizontal directions on the bottom surface.

  Then, the code recognition application reads the image data of the CG object 6 corresponding to each code set 53 out of the recognized data from the storage unit 15 to the VRAM, and places the CG object 6 at the calculated three-dimensional position. Drawing is performed so as to be superimposed on the captured image 7, and the superimposed image is displayed on the monitor 2 via the output interface 24 (step 85).

  In this case, the drawing method of the CG object 6 differs depending on whether the recognized code set 53 is the large code set 531, the medium code set 532, or the small code set 533.

  That is, when the recognized code set 53 is the large code set 531 (code set 53b in FIG. 2), the code recognition application uses the rectangular area defined by the four recognized coordinates as the drawing area as it is. The CG object 6 is drawn.

  When the recognized code set 53 is the middle code set 532 (for example, the code sets 53a and 53d in FIG. 2), the code recognition application first uses the rectangular area defined by the four coordinates as the drawing area as a drawing area. After drawing the object 6, the CG object 6 is quadrupled, and the coordinates of the guide region 51 at the center of the middle code set 532 are the center coordinates of the two-dimensional code 5 (that is, the guide region 51a of FIG. 2). The CG object 6 is translated so as to overlap with the center coordinates.

  When the recognized code set 53 is the small code set 533 (for example, the code set 53c or 53e in FIG. 2), the code recognition application first uses the rectangular area defined by the four coordinates as the drawing area as the CG. After drawing the object 6, the CG object 6 is multiplied by 16 and the CG object 6 is set so that the coordinates of the guide region 51 at the center of the small code set 533 overlap the center coordinates of the two-dimensional code 5. Translate.

  If the data and the four coordinates cannot be recognized in step 83 (No), the code recognition application displays the acquired captured image 7 on the monitor 2 as it is without superimposing the CG object 6.

  Through the above processing, the code recognition application displays the entire CG object 6 according to which size code set 53 is recognized (when the large code set 531 is recognized), It is possible to display the enlarged portion (when the medium code set 532 and the small code set 533 are recognized).

  As described above, according to the present embodiment, the two-dimensional code 5 is configured by the five guide regions 51 arranged in a cross shape, and the game device 1 can recognize the cross shape by 2 The degree of freedom in the design of the dimension code 5 can be improved.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the present invention.

  In the above-described embodiment, the data area 52 is a plurality of rectangular white connected areas. However, as shown in FIG. 10, the data area 52 may be a circular white connected area or another shape.

  In the above-described embodiment, the data area is arranged inside the guide area, but of course, it may be arranged outside the guide area. FIG. 11 is a diagram showing an arrangement example of such a data area. In FIGS. 9A to 9C, the shape of each component of the data area 152 is circular. In FIG. 2A, the data area 152 is arranged in a circular shape around the central guide area 151. In FIG. 5B, the data area 152 is arranged radially from the central guide area 151. In FIG. 3C, the data area 152 is arranged in a square shape around the central guide area 151. In FIGS. 5D to 5F, the shape of each component of the data area 152 is a square. In FIG. 4D, the data area 152 is arranged in a square shape around the central guide area 151. In FIG. 5E, the data area 152 is arranged so as to connect the upper, lower, left and right guide areas 151. In FIG. 5F, the data area 152 is arranged so as to form a double square around the central guide area 151.

  FIG. 12 is a diagram showing a two-dimensional code configured by laying out the code set of (a) among the code sets of FIG. As shown in the figure, in the two-dimensional code 115, a data region 152 is arranged in a circle around the guide region 151 at the center of each code set 153. Similarly to the two-dimensional codes 5 and 105 shown in FIGS. 2 and 10, two adjacent code sets 153 (for example, code sets 153 a and 153 c) have a guide region 151 at the center of one code set 153. (For example, the guide areas 151a and 151b) may be shared as the upper, lower, left, and right guide areas 151 in the other cord set 153. In this case, each data area 152 around each center guide area 151 is arranged so that they do not overlap. Similarly to the two-dimensional codes 5 and 105, the two-dimensional code 115 is a multi-scale code including code sets 153 (for example, code sets 153a and 153b) having different sizes. Furthermore, the code sets 153 having different sizes may share the central guide region 151 (for example, the code sets 153a and 153b). In this case, the data areas 152 corresponding to the respective code sets 153 are arranged concentrically around the central guide area 151 (for example, the data areas 152a-1 and 152a-2).

  In the above-described embodiment, the CG object (three-dimensional image) is associated with the data area of the two-dimensional code. However, other image data such as a two-dimensional image may of course be associated. In addition to the image, for example, voice data, text data, a startup command for a predetermined application, or the like may be associated. In addition, each code set 53 in one two-dimensional code 5 does not correspond to different positions and ranges of one CG object 6, but each code set 53 may correspond to a plurality of different CG objects 6. Absent. In this case, different CG objects 6 (for example, different characters) are drawn and displayed according to the recognized code set 53.

  In the above-described embodiment, each code set of the two-dimensional code is configured by five guide regions that form a cross shape. However, in addition to this, one guide region and the one guide region are the center. One code set may be configured by seven guide regions with six guide regions arranged to be the vertices of a regular hexagon. In this case, the game machine 1 has almost three guide regions for each guide region on at least two diagonal lines out of three regular hexagonal diagonal lines that pass through the central guide region and connect the two guide regions around it. A regular hexagonal code set by determining whether it exists on the same straight line, three guide regions are arranged at almost equal intervals, and whether the angle formed by the two diagonals is equal to or larger than a predetermined angle. May be detected.

  In addition to the hexagonal shape, the cord set can be formed in any shape as long as it is a regular polygon whose diagonal is a plurality of line segments that share a central guide region as a midpoint.

  In the above-described embodiment, the game device 1 is applied as an electronic device. In addition, for example, any stationary or portable electronic device such as a PC, a television receiver, other AV devices, a mobile phone, or the like. It is possible to apply.

It is the figure which showed the usage condition of the game device which concerns on one Embodiment of this invention. It is the figure which showed the two-dimensional code which the game device which concerns on one Embodiment of this invention authenticates. It is the block diagram which showed the structure of the game device which concerns on one Embodiment of this invention. It is the flowchart which showed the flow of the process at the time of the game device which concerns on one Embodiment of this invention recognizes a two-dimensional code. In one Embodiment of this invention, it is the figure explaining the method of judging the ratio of the distance between each guide area | region. FIG. 6 is a diagram illustrating a method for determining an angle formed by a line segment connecting upper and lower guide areas and a line segment connecting left and right guide areas in an embodiment of the present invention. In one Embodiment of this invention, it is the flowchart which showed the flow of the process in the case of obtaining additional information from the guide area | region of the upper and lower sides and right and left. It is the figure which showed notionally the mode of the process of FIG. 6 is a flowchart showing a flow of processing for drawing a CG object based on data recognized from a data area in an embodiment of the present invention. It is the figure which showed the example of the two-dimensional code in other embodiment of this invention. It is the figure which showed the example of the code set in the two-dimensional code in other embodiment of this invention. It is the figure which showed the example of the two-dimensional code in other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Game equipment 2 ... Monitor 3 ... Camera 4 ... Card 5, 105, 115 ... Two-dimensional code 6 ... CG object 7 ... Captured image 8 ... Mounting space 11 ... CPU
12 ... ROM
13 ... RAM
DESCRIPTION OF SYMBOLS 14 ... Operation input part 15 ... Memory | storage part 21 ... Input interface 22 ... Code recognition part 23 ... Display control part 24 ... Output interface 51 (51a-51m), 151 (151a-151i) ... Guide area | region 52 (52a-52o), 152 (152a) ... Data area 53 (52a to 52e), 153 (153a to 153c) ... Code set 511 ... Large guide area 512 ... Medium guide area 513 ... Small guide area 531 ... Large code set 532 ... Medium code set 533 ... Small code set

Claims (20)

An electronic device that recognizes a two-dimensional code,
The first region having a predetermined shape and the first region sharing the first region as the first midpoint and being respectively disposed at each end point of the first line segment and the second line segment having the first length. A first reference area defining a first recognition range in the two-dimensional code, and a first reference area having a second area, a third area, a fourth area, and a fifth area, each having the predetermined shape. To obtain a captured image obtained by capturing the two-dimensional code having a first data area corresponding to first data processed at the first position having a predetermined relationship with the first data and processed by the electronic device Acquisition means;
Detecting means for detecting the first to fifth regions based on the predetermined shape from the acquired captured image;
First determination means for determining whether or not the detected first region is within a predetermined distance from each of the first and second line segments;
A first distance between the first and second areas and a second distance between the first and third areas when it is determined that the first area is within the predetermined distance. And a second ratio of the third distance between the first and fourth regions and the fourth distance between the first and fifth regions is a predetermined ratio, respectively. A second determination means for determining whether or not it is within a range;
Recognizing means for recognizing the first data from the first data area in the first recognition range when it is determined that the first and second ratios are within the predetermined ratio. It provided electronic equipment. The electronic device according to claim 1,
Calculating means for calculating an angle formed by the first line segment and the second line segment from the captured image;
And third determining means for determining whether or not the calculated angle is within a predetermined angle range,
The recognition means recognizes the first data when it is determined that the angle is within a predetermined angle range.
Electronic equipment. The electronic device according to claim 1,
The first data is image data;
The recognizing unit recognizes the image data from the first data area, recognizes each coordinate data of the second to fifth areas on the image data,
The electronic device
The image processing apparatus further includes drawing means for drawing the recognized image data at a drawing position and a drawing direction based on each recognized coordinate data.
Electronic equipment. The electronic device according to claim 3,
The first data area has an error detection area for error detection;
The recognizing means uses the reference direction in which no error is detected in the error detection area when the first data area is decoded with the directions in which the second to fifth areas exist as reference directions. To recognize each coordinate data
Electronic equipment. The electronic device according to claim 1,
The two-dimensional code is a second reference area that shares the first and second areas with the first reference area, and the first area has the second area as a second midpoint. And a sixth region disposed at the other end of the third line segment having one end as the one end and the predetermined shape, and the second midpoint shared with the third line segment and having the first length. And a second recognition range in the two-dimensional code, each of which has a predetermined shape and is arranged at each end point of a fourth line segment parallel to the second line segment. A second reference region that defines the second reference region, a second data region that is disposed at a second position having the predetermined relationship with the second region, and that corresponds to second data processed by the electronic device; Have
The detection means detects the sixth to eighth regions together with the first and second regions based on the predetermined shape from the captured image,
The first determination means determines whether or not the second region exists within the predetermined distance from the third and fourth line segments, respectively.
The second determination means determines the fifth distance between the second and sixth regions and the second and first when the second region is determined to be within the range of the predetermined distance. A fourth ratio of a third ratio to a sixth distance between the second and seventh regions, a seventh distance between the second and seventh regions, and an eighth distance between the second and eighth regions. Determining whether the ratio is within the predetermined ratio range,
The recognizing unit recognizes the second data from the second data area in the second recognition range when it is determined that the third and fourth ratios are within the predetermined ratio. Do
Electronic equipment. The electronic device according to claim 1,
The two-dimensional code is disposed at a second position having the predetermined relationship with the second area, and has a second data area corresponding to second data processed by the electronic device,
The electronic device
First identification information for identifying the first area is stored in association with the first data, and second identification information for identifying the second area is stored in association with the second data. And further storing means for
The recognition means recognizes the first and second data from the first and second data areas, respectively, and the first identification information corresponding to the recognized first data, and the recognition The authenticity of the recognized first data is confirmed by comparing with the second identification information corresponding to the recognized second data.
Electronic equipment. The electronic device according to claim 1,
The two-dimensional code is a second reference area that shares the first area with the first reference area, and the first area is shared as a second midpoint, and the first length Are arranged at the end points of the third line segment and the fourth line segment respectively having the same second length as the first line segment and the second line segment. A second reference area defining a second recognition range in the two-dimensional code, the second reference area having the predetermined shape, the sixth reference area, the eighth reference area, and the ninth area; A second data area corresponding to second data to be processed by the electronic device and disposed at a second position having a predetermined relationship;
The detection means detects the sixth to ninth regions together with the first region based on the predetermined shape from the captured image,
The first determination means determines whether or not the second region exists within the predetermined distance from the third and fourth line segments, respectively.
The second determination means includes a third ratio between a fifth distance between the first and sixth regions and a sixth distance between the first and seventh regions, and the first and seventh regions. Determining whether the fourth ratio of the seventh distance between the eight regions and the eighth distance between the first and ninth regions is within the predetermined ratio range, respectively.
The recognizing unit recognizes the second data from the second data area in the second recognition range when it is determined that the third and fourth ratios are within the predetermined ratio. Do
Electronic equipment. The electronic device according to claim 1,
The first line segment and the second line segment are orthogonal to each other
Electronics. The electronic device according to claim 1,
The second to fifth regions form four of six vertices of a regular hexagon centered on the first region,
The first and second line segments form two of three diagonal lines passing through the center of the regular hexagon.
Electronic equipment. The electronic device according to claim 1,
The first data area is arranged inside the first area.
Electronics. The electronic device according to claim 1,
The predetermined shape is circular.
Electronics. A method for an electronic device to recognize a two-dimensional code,
The first region having a predetermined shape and the first region sharing the first region as the first midpoint and being respectively disposed at each end point of the first line segment and the second line segment having the first length. A first reference area defining a first recognition range in the two-dimensional code, and a first reference area having a second area, a third area, a fourth area, and a fifth area, each having the predetermined shape. A captured image obtained by capturing the two-dimensional code having a first data area corresponding to the first data processed at the first position having a predetermined relationship with the electronic data,
Detecting the first to fifth regions based on the predetermined shape from the acquired captured image;
Determining whether the detected first area is within a predetermined distance from each of the first and second line segments;
A first distance between the first and second areas and a second distance between the first and third areas when it is determined that the first area is within the predetermined distance. And a second ratio of the third distance between the first and fourth regions and the fourth distance between the first and fifth regions is a predetermined ratio, respectively. Determine whether it is within range,
When it is determined that the first and second ratios are within the predetermined ratio, the first data is recognized from the first data area in the first recognition range.
Two- dimensional code recognition method. For electronic devices that recognize 2D codes,
The first region having a predetermined shape and the first region sharing the first region as the first midpoint and being respectively disposed at each end point of the first line segment and the second line segment having the first length. A first reference area defining a first recognition range in the two-dimensional code, and a first reference area having a second area, a third area, a fourth area, and a fifth area, each having the predetermined shape. Acquiring a captured image obtained by capturing the two-dimensional code having a first data area corresponding to first data processed at the first position having a predetermined relationship with the first data and processed by the electronic device When,
Detecting the first to fifth regions based on the predetermined shape from the acquired captured image;
Determining whether the detected first region is within a predetermined distance from each of the first and second line segments; and
A first distance between the first and second areas and a second distance between the first and third areas when it is determined that the first area is within the predetermined distance. And a second ratio of the third distance between the first and fourth regions and the fourth distance between the first and fifth regions is a predetermined ratio, respectively. Determining whether it is within range; and
Recognizing the first data from the first data area in the first recognition range when it is determined that the first and second ratios are within the range of the predetermined ratio. Program to let you. A two-dimensional code recognized by an electronic device,
The first region having a predetermined shape and the first region sharing the first region as the first midpoint and being respectively disposed at each end point of the first line segment and the second line segment having the first length. A first reference region having second, third, fourth, and fifth regions each having the predetermined shape, and defining a first recognition range in the two-dimensional code;
The first is located in position, the first data area and the two-dimensional code that includes a corresponding to the first data to be processed by the electronic device having a predetermined relationship with said first region. The two-dimensional code according to claim 14,
A second reference region sharing the first and second regions with the first reference region, wherein the second region is a second midpoint, and the first region is one end. The second region is disposed at the other end of the line segment, and the sixth region having the predetermined shape and the second midpoint are shared with the third line segment and have the first length and the second region. A seventh segment that is arranged at each end point of a fourth line segment parallel to the line segment and has a predetermined shape, respectively, and that defines a second recognition range in the two-dimensional code. Two reference areas;
Wherein arranged in the second position with a second region of said predetermined relationship, the second data area and a further two-dimensional code that includes a corresponding to the second data to be processed by the electronic apparatus. The two-dimensional code according to claim 14,
A second reference region sharing the first region with the first reference region, the second region sharing the first region as a second midpoint and different from the first length, respectively; Are arranged at the end points of the third line segment and the fourth line segment respectively existing on the same straight line as the first line segment and the second line segment, respectively, and each having the predetermined shape. A second reference region having a sixth recognition region and a second recognition region in the two-dimensional code;
Wherein arranged in the second position with a second region of said predetermined relationship, the second data area and a further two-dimensional code that includes a corresponding to the second data to be processed by the electronic apparatus. The two-dimensional code according to claim 14,
The first line segment and the second line segment are orthogonal to each other
Two-dimensional code. The two-dimensional code according to claim 14,
The second to fifth regions form four of six vertices of a regular hexagon centered on the first region,
The first and second line segments form two of three diagonal lines passing through the center of the regular hexagon.
Two-dimensional code. The two-dimensional code according to claim 14,
The first data area is arranged inside the first area.
Two-dimensional code. The two-dimensional code according to claim 14,
The predetermined shape is circular.
Two-dimensional code.

Images