KR100701292B1 - Image code and method and apparatus for recognizing thereof - Google Patents

Abstract

The present invention relates to an information display image code for displaying predetermined information, and a method and apparatus for detecting and recognizing the same.

According to the present invention, an image code for displaying predetermined information using color includes at least two objects having colors separated from each other and included in a predetermined area, and displaying information using a predetermined relationship between the objects. It features.

Accordingly, color interference may be reduced by using a plurality of objects separated from each other. In addition, by using various attributes of the plurality of objects to express the relationship between the objects, letters or numbers, it is possible to prevent unauthorized theft of others.

Description

Image code and method and apparatus for recognizing

1 illustrates an example of a conventional color code.

2 shows an RGB color cube and FIG. 3 shows an HSI color model made from it.

4A, 4B, and 4C illustrate one embodiment of an image code in accordance with the present invention.

5a to 5c show another embodiment of an image code according to the invention.

6 to 10 show further embodiments of an image code according to the invention.

11 shows the number of combinations that can be represented by an image code according to the present invention.

12 shows a block diagram of an apparatus for generating an image code according to the present invention.

13 is a block diagram of a device for recognizing an image code according to the present invention, and FIG. 14 is a diagram illustrating an operation flowchart thereof.

The present invention relates to an information display image code for displaying predetermined information, and a method and apparatus for detecting and recognizing the same.

Barcodes are a representative example of information such as letters and numbers in the form of images. Barcodes express information using the thickness and width of the line, and the barcode reader is read close to the barcode marked area. As described above, in the case of a barcode used in the related art, a barcode reader is directly photographed near a barcode image portion to recognize the barcode. However, conventional methods cannot be applied to attach a code image to a moving object and then identify the object by the code image.

On the other hand, color codes may be used to identify moving objects. 1 illustrates an example of a conventional color code. As shown in FIG. 1, a color code is expressed using a code value determined for each color. The color code has an advantage of obtaining accurate information even when photographed using a digital camera at a long distance. However, as shown in FIG. 1, when each color area is adjacent, interference between each adjacent color area is likely to occur. In addition, since the coding using a single parameter (color), there is a problem that is easily decipherable and vulnerable to unauthorized theft of others. Furthermore, this type of color code has a disadvantage in that it does not actually take full advantage of the two-dimensional coding because the order of the structural units of the color code is simply fixed, for example, reading from left to right.

Accordingly, the technical problem of the present invention is to provide an image code capable of accurately extracting information without interference from an image captured by an imaging device.

Another object of the present invention is to significantly increase the number of combinations that can be represented by adding parameters of the code.

Another object of the present invention is to provide a method and apparatus for recognizing predetermined information by extracting an image code from a captured image.

According to the present invention, in the image code for displaying predetermined information using color, at least two objects having a color are separated from each other and included in a predetermined area, and a predetermined relationship between the objects is provided. Information is displayed, the predetermined area being achieved by an image code characterized in that it represents a domain area in which the object exists.

The objects form a closed curved surface, and each object is preferably separated from each other by a predetermined distance or more.

In addition, it is preferable to use at least one of the shape, color, or border style of the object to define the relationship between the objects,

It is particularly preferable that the relationship between the objects include at least one of an angle or a distance between the objects.

The object may further include a disturbing object to prevent another person from decrypting the information without permission.

Among the objects, it is preferable to further include an object for parity check to confirm the correct transfer of information.

In addition, it is preferable that the starting position of the first object can be arbitrarily defined within the predetermined area.

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In addition, it is preferable to further include a direction switching object arranged at a predetermined position of the predetermined area, the object for changing the direction at a predetermined predetermined angle.

On the other hand, according to another aspect of the present invention, the above technical problem, in the method for receiving an image containing an image code for displaying predetermined information by using a color to recognize the image code from the image, the predetermined domain in the image Detecting an area; Detecting at least two objects separated from each other by searching from a predetermined position in the detected domain region; Recognizing at least one attribute for the detected object; Analyzing the attributes of the recognized object to find a predetermined relationship between the objects; And interpreting the information by using the relationship between the found objects.

On the other hand, according to another aspect of the present invention, the above technical problem, in the apparatus for receiving an image containing an image code for displaying a predetermined information by using a color to recognize the image code from the image, the predetermined domain in the image An image processor for detecting an area, detecting at least two objects separated from each other by searching from a predetermined position of the detected domain area, and recognizing at least one property of the detected object; A storage unit in which relationships between objects corresponding to attributes of the recognized objects and code conversion relationships with letters or numbers are set; And a decoder for analyzing a property of a recognized object according to a code conversion relationship to find a predetermined relationship between the objects, and interpreting display information using the found objects to generate letters or numbers. Is achieved by a device for recognition of image codes.

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

2 shows an RGB color cube and FIG. 3 shows an HSI color model made from it.

In Figure 3 the circular cross section is perpendicular to the I (intensity) axis. As shown in this figure, the saturation value is proportional to the distance from the origin, and the hue value corresponds to the angle from red. Equations 1 and 2 are formulas for calculating saturation and hue values, respectively.

Here, the angle θ is expressed as in Equation 3 below.

Therefore, if the colors used in the image code are pure colors, that is, six colors of R, G, B, C, M, and Y called so-called safety colors, the saturation value is 1.0 at the maximum by Equation 1, and their hue values are It can be seen that Equation 2 has a value corresponding to a multiple of 60 degrees. That is, the image code has a multiple of 1.0, which is the maximum value by Equation 1, and 60 by Equation 2.

According to an embodiment of the present invention, when the safety colors R, G, B, C, M, and Y are used as the colors used in the image code, the above-described characteristics of these colors are used to define the relationship between the objects described below. The above-mentioned color can be used. That is, the color of each object can be used to define the angle (direction) between each object.

More specifically, the image code in which angles between the objects are defined using the colors of the objects will be described. 4A, 4B, and 4C illustrate one embodiment of an image code in accordance with the present invention.

Referring to FIG. 4A, an embodiment of an image code for displaying information using a shape of an object and a color of an object is illustrated. A plurality of objects are included in a predetermined area to be described later. Each object is separated from each other by a predetermined distance or more. Accordingly, in the case of the conventional color code, it is possible to solve the problem that interference may occur by arranging colors without a gap. In FIG. 4A, the arrows are not displayed in the actual image code, but are shown for convenience to indicate the order of the objects determined by the attributes of the objects. In this example, the borderline of each object is preferably displayed in a color contrasting with the background to facilitate separation of the object from the background in the image code.

4B shows code values according to the shape of each object. Each object may be represented by an equilateral triangle, an inverted triangle, a circle, a square, a rhombus, and the like, and may further include various shapes such as a horizontally long rectangle and a vertically long rectangle. For convenience of explanation, hereinafter, the description will be made based on the shape of an equilateral triangle-diamond having a code value of 0-4.

On the other hand, Figure 4c shows a code value according to the color of each object. As described above, pure colors such as red (R), yellow (Y), green (G), cyan (blue), blue (B), and magenta (M) having a saturation of 1.0 are preferably used. Each color has a code value of 0-5. Of course, if the number of information to be displayed is large, the number of colors can be further increased. In addition, the size of the object may be variously modified to further include an object R2 having a different size of red or an object B2 having a different size of blue. However, hereinafter, only the case of 0-5 red-magenta will be described for convenience of description.

Furthermore, it is preferable to specify not only the code value but the attribute representing the relationship between each object in the color of each object. That is, by using the attribute of color to indicate the direction information for the next object, the object next to the current object can be found in the direction of the specified angle. Referring to the third column of FIG. 4C, using the color model of FIG. 3 described above, red (R) is 0 degrees, yellow (Y) is 60 degrees, green (G) is 120 degrees, and cyan is 180 degrees, blue (B) is 240 degrees, magenta (Magenta) is 300 degrees. That is, the angle between six objects can be expressed in multiples of 60 degrees. When the number of pieces of information to be displayed is large, the intervals of the angles may be made smaller by 45 degrees as shown in the fourth column of FIG. 4C. On the contrary, in an environment in which geometric distortion of an image may occur during photographing, an interval between angles of objects may be increased to represent a multiple of 90 degrees. Incidentally, the intervals of the angles may be specified not evenly.

In summary, the display information may be interpreted by combining the code values of the shape and the color of the object, and the object to be interpreted after the current object may be found in the direction of the angle corresponding to the color of the current object.

More specifically, referring to Figs. 4A to 4C, let us interpret display information from the image code shown. Here, it is assumed that the object in the upper left corner is a start object. The first object of FIG. 4A is a circular object of magenta (M) color. Assuming that the information displayed by the current object is interpreted in the order of shape and color, as shown in the code conversion tables of FIGS. 4B and 4C, a code value is obtained by combining 2 corresponding to a circle and 5 corresponding to a magenta color. 25. The arrows shown in FIG. 4A are only shown for reference to explain the interpretation order of the objects, and are not included in the actual image code.

Now, to find the object to be interpreted next, with reference to FIG. 4C, the angle 300 corresponding to magenta (M) of the current object is found, and as shown in FIG. 3, 300 degrees counterclockwise from the horizontal direction. Search for objects in the same direction. As shown in FIG. 4A, the red rhombus in the 300 degree direction becomes the second object. If the code value is interpreted with reference to FIGS. 4B and 4C in the same manner as in the first object, 40 may be obtained by combining 4 corresponding to a rhombus and 0 corresponding to a red color.

As the next third object, the red color of the second object corresponds to 0 degrees, so we can find the green inverted triangle in the 0 degree direction. At this time, since the angle between each object is calculated based on the center point of each object, the yellow equilateral triangle is ignored. That is, in FIG. 4A, when the direction indication virtual line (arrow) deviates by a predetermined distance or more from the center point of the object, the object is ignored and proceeds to search. The third object, the green inverted triangle, has a code value of 12.

As the next fourth object, since the green color of the third object corresponds to 120 degrees, a blue square can be found in the 120 degree direction. The code value of this object is 34.

Finally, as the fifth object, a yellow equilateral triangle object is found in the 240 degree direction corresponding to the blue color of the fourth object. The code value is 01, and no further objects can be found except the blue squares that have already been processed in the 60-degree direction corresponding to yellow, so the interpretation of the image code is terminated.

Here, the termination condition may be defined differently. For example, when searching again in the reverse direction, you ignore the previous object and go straight ahead and search later. In this case, as in FIG. 4A, if there are no more objects on the direction indication virtual line behind the previous object, the code ends in the current object.

In another example, when returning to the previous object direction, the previous object is searched by changing the angle based on the advancing direction. In this method, it is also possible to duplicate the code of an object. Search for duplicate objects in the same way, and terminate the search if no objects are connected. In FIG. 4A, a code is connected to an object of a circular Cyan color, which is connected to a start object again. This condition, that is, encountering a start object may be used as an end condition.

If the reverse direction search method described above in FIG. 4A is not allowed, the Cyan circle is not used in the interpretation of the image code since it does not lie in the corresponding direction. This disturbing object prevents others from interpreting the image code without permission. Inclusion of disturbing objects is an option of the image code creator.

In addition, an object for parity check may be used to confirm that each object is correctly interpreted. For example, an object for parity check can be placed in the last object, every third object, or in contact with a boundary of a domain region described later.

On the other hand, the edge objects of the domain area are limited in the direction that can be selected. To solve this limitation of the orientation option, when the object points to the edge (wall) of the domain area, it wraps around and searches through the wall in the opposite direction. ), A reflection mode that returns and searches as if light is reflected from a wall, or a mode that rotates in a predetermined direction unconditionally.

In addition, one of the features of the image code according to the present invention is that even if the object arrangement in the same order, the total code value may vary depending on the distance between adjacent objects. That is, after searching for the next object, the distance from the current object is measured and the information is included in the code. This is a feature not possible with simple two-dimensional layout of existing objects. Here, the distance may be calculated based on the size of the current object, that is, a multiple of the radius of the largest inscribed circle or the smallest inscribed circle.

Furthermore, the present embodiment may be modified so that the shape of the object represents the relationship between the objects by specifying the angle for each shape instead of the color of the object.

In addition, it is preferable to set the color image area as a domain area to search for each object. Accordingly, instead of searching the entire photographed image, each object may be analyzed more efficiently by searching only the set color image area. In addition, the position of the start object may be variously changed and designated such as the center or upper left.

9 shows another embodiment of various modifications to the embodiment according to the present invention. Referring to the figure, there is shown a color image area having a shape of a circle, a square, a rhombus, or the like. For accurate interpretation of the image code, the background color of the color image area is preferably white. In FIG. 9, an object may be white. If a border line is used for each object, the object may be used for a whiteness object. In FIG. 4A, a black border is used to easily distinguish the area of each object from white, which is a background color.

Meanwhile, as another embodiment, the image code further including the border style in addition to the shape and color of the object will be described. In addition to the above-described angles (directions), the distance between objects is further defined.

5A and 5B show another embodiment of an image code according to the present invention. That is, an image code is shown in which the border style of the object is added as compared to FIG. 4A.

Referring to FIG. 5B, a distance between objects corresponding to an edge style of an object is defined. For example, if the border style of an object is a solid line, the distance between objects is twice the reference distance X assuming the reference distance X, and if the dotted line 1 is three times the reference distance X, the dotted line is defined with different lengths of lines and blanks. 2 may be defined as 4 times the reference distance X, and in the case of a single-dot chain line, 5 times the reference distance X.

Accordingly, when the image code illustrated in FIG. 5A is interpreted, the first object may be a magenta circle, and the second object may be found in the 300 degree direction corresponding to the magenta color. At this time, since the border style is a dotted line 1, the second object can be found at a position separated by three times the reference distance X as defined in FIG. 5B. Also, the second object is a red rhombus, and the next object can be found in the 0 degree direction corresponding to the red color. At this time, since the border style is a dotted line 2, the third object can be found at a position separated by four times the reference distance X as defined in FIG. 5B. As such, finding the next object by the combination of angle and distance can reduce the search time and place multiple objects on the same direction line, rather than finding the next object using only the angle. It can be reduced and more efficient.

FIG. 5C illustrates a case where an empty space is provided between the object and the border line in FIG. 5A to easily separate the border line from the inner color area. The empty space between the border line and the object in this way is because, in the case of color distortion, it may be difficult to analyze the border line by separating the border line and the object in the form of FIG. 5A.

6 to 8 and 10 show further embodiments of the image code according to the present invention.

FIG. 6 illustrates an embodiment in which only a distance between objects is specified in the style of an object's border. In this case, it is assumed that the angle between each object using color is not used. That is, the next object is found and analyzed at a position separated by a distance corresponding to the border style of each object from the position of the start object of the predetermined area. If the code value corresponding to the color uses the first letter of the uppercase letter representing each color instead of the number 0-5, the code value is B because the color of the start object is blue, and the border style is dotted line 2, so that FIG. As shown in Fig. 2, the second object is found at a position four times the reference distance X. Since the second object is red and has a border style of dotted line 1, the code value is R and the next object finds the third object at three times the reference distance X. Since the third object is green and has a solid border, the code value is G, and the next object finds the fourth object two times the reference distance X. The fourth object is magenta and has a dashed border, so the code value is M, and the next object finds the fifth object three times the base distance X. However, at this point, no more redundant objects can be found, so the interpretation of the image code ends. As a result, in the case of an image code such as the figure, depending on the application, a code value of BRGM or B2R1G0M3 may be selectively obtained. In this way, the code value of each object may be defined not only as a number but also as a letter, and the relationship between the objects may be variously modified to represent distances in addition to angles. In this model, the search order when there are a plurality of objects on an equidistant circle can be searched first in the counterclockwise direction from the horizontal axis.

In addition, as another variation of the present embodiment, if the following method is used in encoding, it can be designed to avoid the overlap arrangement of objects that may occur in an application that combines the entire attributes of the object to form a single sign. have. In other words, if a newly created object overlaps with an already placed object, change the direction of the object by a predetermined angle, increase the distance by a predetermined step, or change the angle and distance until it does not overlap. To reposition the object.

FIG. 7 is an example of the case where an object at the shortest distance from the start object is interpreted as the next object as another embodiment of the image code according to the present invention. In this case, without considering the angle or the specified distance between the objects, the object that is not used duplicated among the nearest objects from the current object is interpreted as the next object. The search order in the case where a plurality of objects exist on equidistant distances can be made to search first in the counterclockwise direction from the horizontal axis. If the code value of the object is a character value corresponding to the color, the result code value is BGCBGRYGM. As described above in FIG. 6, if the distance between objects is inserted into the code, the number of combinations may be further increased.

8 is another embodiment of the invention further including an object for parity check in the middle. Assuming that a code value is obtained by combining a text value corresponding to the color of an object and a numeric value corresponding to the shape of the object, the result code value is B2G3C2B2G2R2Y2G2M2. Various corresponding code values may be modified. The last two digits (M2) are the digits for parity check of color and border, respectively.

In addition, in the case of adding a new code value by adding more attributes of an object, one object may be modified to have a three-digit code value as well as two digits.

On the other hand, Figure 10 is another embodiment of the present invention further includes a direction switching object. Referring to FIG. 10, a case where a direction switching object is arranged at a specific position in a color image area is illustrated. That is, when an object for changing direction as shown while encoding or decoding an object is encountered, the object may be searched by turning the object at a predetermined angle such as 90 degrees in a clockwise direction to search for another object. have. This makes it possible to use the space in the color image area more efficiently.

In addition, when using an object for redirection, the next object is searched for the nearest object without changing the next object by other attributes such as color, shape, and border of each object constituting the code, where clockwise or It may be rotated counterclockwise by a certain angle to search for the next object. In this case, by reducing the number of attributes of each object to be interpreted, it is possible to increase the efficiency of encoding and decoding the image code.

In summary, as described in various embodiments of the present disclosure, by using various attributes of an object, various code values may be given by a combination thereof. In addition, various properties such as distances or angles between objects can be specified using attributes of objects. Accordingly, various parameters are used to interpret one image code, thereby enabling various applications of the image code.

In addition, in the case of unauthorized persons, as the factors to be considered increase, it becomes difficult to interpret the image code unauthorizedly. In addition, by adding a disturbing object, it is possible to prevent unauthorized theft of the image code. In addition, the parity check object enables accurate transmission and interpretation of the image code.

11 shows the number of combinations that can be represented by an image code according to the present invention. Consider the case of an image code having five shapes (Ns = 5) and six colors (Nc = 6) without including an object for parity check.

First, in the case of CASE1, a code value is designated by combining the shape and color of an object with the image code shown in FIG. 4A. The number of representable combinations according to the object number (No) can be calculated by the following equation (4).

Here, Ns represents the number of shapes of the object, Nc represents the number of colors of the object, and No represents the number of objects used.

In particular, the constant 2 indicates that there are only two cases where 0 degrees and 300 degrees are possible at this position, assuming that there is a starting object in the upper left corner and six directions are used in the color image area in the case of a rectangular rectangle. Therefore, if the start object starts at the center of the color image area, it may be changed to Nc = 6. Starting with the second object, Nc-1 = 5 directions are possible for a typical design that excludes backward travel to the previous object direction. The calculation result of the number of representable combinations is shown in the second column of FIG. If the distance between adjacent objects is measured in this order and classified into four types as shown in the third column of FIG. 5B, the combination number of the third column of FIG. 10 can be obtained.

Meanwhile, in the case of CASE2, a case of generating a three-digit combination code including not only the shape and color of an object but also the style of a border from the image code illustrated in FIG. 5A or 5C is illustrated. In the case of FIG. 5C, the three-digit code value will be 252-403-121-341-011 in the order of Shape-> Color-> Border Style. In the third column of FIG. 11, the number of representable combinations calculated according to Equation 4 is shown.

As shown in FIG. 11, the number of representable combinations increases exponentially with the number of objects used. In particular, as in the case of using three attributes per object in the third column of FIG. 11, even if the number of objects is slightly increased, a sufficiently large number of combinations can be expressed.

12 shows a block diagram of an apparatus for generating an image code according to the present invention.

Referring to FIG. 12, when the object information to be displayed in the image code is set, the shape, color, or border style of each object corresponding to the letter or number included in the object information is determined by referring to the code conversion table 111. . In addition, the shape, color, or border style of the object representing the relationship between the objects is determined. The encoder 112 generates the image code according to the shape, color, or border style of the objects to be included in the image code and the relationship between each object. The output unit 113 prints the image code generated by the encoder 112 in a sticker or other necessary form.

13 shows a block diagram of an apparatus for recognizing an image code according to the present invention.

As shown in FIG. 12, an image code printed and distributed is obtained in an image form by an image capturing apparatus such as a camera or a camcorder, and then original object information is extracted therefrom.

When the image acquired by the image capturing apparatus is input to the image processor 123, the image processor 123 first checks whether the aforementioned color image region including the image code exists in the input image. That is, the domain region is detected from the image, and the object is detected by searching from the start position of the detected domain region. It also recognizes attributes such as the shape, color, and border style of the detected object.

The storage unit 121 stores a code conversion table in which relationships between objects corresponding to attributes of the recognized object and code conversion relationships with letters or numbers are set.

The decoder 122 analyzes the attributes of the recognized objects according to the code conversion table stored in the storage unit, finds relationships such as angles and distances between the objects, and interprets the display information by using the relationships between the objects. Detect the original object information by extracting letters or numbers. In recognizing the attributes of each object, projective transformation and affine of objects distorted by shearing, rotation, projective distortion, etc. This can be corrected by an affine transformation or the like.

14 is a flowchart illustrating an operation of an apparatus for recognizing an image code according to the present invention.

Referring to FIG. 14, an image code is obtained (step 1302) to find a color image area as a domain area. In particular, image codes in which geometric distortions such as shearing, rotation, and projective distortion occur during image acquisition can be corrected by affine transformation or projection transformation, and a reference axis can be found if necessary. . In operation 1304, object properties such as shape, color, and border style of the objects included in the corrected color image area are recognized. In order to recognize the shape of an object, a well-known method such as obtaining a region skeleton or using templates may be used. In addition, the color of the object may be recognized by statistically analyzing the histogram of the internal pixels of the object or by processing by an artificial neural network.

As described above, the result of recognizing the shape, color, and border style of the object may be used to determine the relationship between the objects, and the object information may be detected by converting the object into a letter or a number using a combination of attributes (1306). step).

In summary, a method of recognizing an image code according to the present invention may include detecting a color image area that is a domain area in a received image, detecting a plurality of objects separated from each other by searching from a start position within the detected color image area. Recognizing attributes of the detected objects, analyzing attributes of the recognized objects to find a predetermined relationship between the objects, and interpreting the objective information using the found relationships between the objects.

The invention can also be embodied as computer readable code on a computer readable recording medium. The computer-readable recording medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, hard disk, floppy disk, flash memory, optical data storage device, and also carrier waves (for example, transmission over the Internet). It also includes the implementation in the form of. The computer readable recording medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion.

The above description is only one embodiment of the present invention, and those skilled in the art may implement the present invention in a modified form without departing from the essential characteristics of the present invention. Therefore, it should be interpreted to include various embodiments that are not limited to the examples according to the present invention but within the scope equivalent to those described in the claims.

As described above, according to the present invention, an image code is provided in which a plurality of objects are separated from each other and included in a predetermined area. Accordingly, information can be accurately extracted from the captured image without color interference.

In addition, by using various attributes of the object, various combinations of code values can be given. In addition, various properties such as distances or angles between objects can be specified using attributes of objects. Accordingly, various parameters are used to interpret one image code, thereby enabling various applications of the image code.

Further, for unauthorized persons, as the factors to be considered increase, it becomes difficult to interpret the image code unauthorizedly. In addition, by adding a disturbing object, it is possible to prevent unauthorized theft of the image code. In addition, using the parity check object enables accurate transmission and interpretation of the image code.

In addition, since objects of various shapes can be freely arranged as compared with barcodes or conventional color codes, aesthetic design of image codes becomes possible.

Claims (13)

An image code for displaying predetermined information using color, At least two objects having the color are separated from each other and included in a domain area. The information is displayed using a predetermined relationship between the objects, And the relationship of the object is an angle or distance between the objects defined by at least one of a shape, a color, and a border style which are attributes of the object. delete The method of claim 1, The objects are ordered by the relation of the objects, and the image code, characterized in that to display the information by the properties of the objects in the predetermined order. delete The method of claim 1, The image code of the object further comprises a disturbing object to prevent unauthorized decryption of information by others. The method of claim 1, The object code of the object further comprises a parity check object to confirm the correct transfer of information. delete The method of claim 1, And a start position of a first object in the predetermined area can be arbitrarily defined. The method of claim 1, And a direction changing object arranged at a predetermined position of the predetermined area to change the direction of the object at a predetermined predetermined angle. In the method for receiving the image containing the image code for displaying the predetermined information by using the color to recognize the image code from the image, Detecting a predetermined domain region in the image; Detecting at least two objects separated from each other by searching from a predetermined position in the detected domain region; Recognizing at least one attribute for the detected object; Analyzing a property of the recognized object to find a predetermined relationship between the objects; And Interpreting the information using the relationship between the found objects,  And the relationship between the objects is an angle or a distance between the objects defined by at least one of a shape, a color, and a border style, which are attributes of the object. The method of claim 10, The objects are ordered according to the relationship of the object, and the image code recognition method, characterized in that to display the information by the properties of the objects in the predetermined order. An apparatus for receiving an image including an image code for displaying predetermined information by using color to recognize the image code from the image, An image processing unit for detecting a predetermined domain area in the image, searching for a predetermined location of the detected domain area to detect at least two objects separated from each other, and recognizing at least one property of the detected object; A storage unit in which a relationship between the objects corresponding to attributes of the recognized object and a code conversion relationship between letters and numbers is set; And A decoder unit for analyzing a property of the recognized object according to the code conversion relationship to find a predetermined relationship between the objects, and interpreting the display information using the found objects to generate letters or numbers;   And the relationship between the objects is an angle or a distance between the objects defined by at least one of a shape, a color, and a border style, which are attributes of the object. A computer-readable recording medium having recorded thereon a program for executing the method of claim 10 or 11 on a computer.

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