CN108985420A - A kind of decoding method and decoding system of information code - Google Patents

Abstract

The invention discloses an information code encoding and decoding method and a decoding system. The method includes: the information code encoding method includes: obtaining the information to be encoded, and obtaining the encoding relationship between the color of the target light source and the information, and according to the encoding of the color and the information relationship, and the above information to be encoded are encoded to obtain an information code including a metamerism block. Compared with the prior art, by constructing information codes containing metamerism blocks based on the encoding relationship between color and information, it is possible to associate information codes with patterns, and different information to be encoded can obtain information codes with different color patterns, And because the information code is generated based on the coding relationship between the color of the target light source and the information, the decoding of the information code must also be performed under the target light source to obtain the correct information, so the security performance is stronger.

Description

Encoding and decoding method and decoding system of information code

technical field

The invention relates to the field of information technology, in particular to an information code encoding and decoding method and decoding system.

Background technique

With the prevalence of the development of the Internet of Things, identification technology has become an important part. For example, two-dimensional code technology, as a technology for connection and identification, has become more and more important. Two-dimensional code technology has the ability to integrate graphics and text into information codes. There are also some color codes, or the background is embedded with graphics, but the current technology has several problems. One is that the pattern displayed by the information code is irrelevant to the information code, and the other is that it does not have a good security function.

Contents of the invention

The main purpose of the present invention is to provide an information code encoding and decoding method and system, aiming to solve the technical problem in the prior art that the pattern displayed by the information code has nothing to do with the information code and does not have a good security function.

In order to achieve the above object, the first aspect of the present invention provides an encoding method of an information code, including:

Obtain the information to be encoded, and obtain the encoding relationship between the color of the target light source and the information;

Encoding is performed according to the encoding relationship between the color and information and the information to be encoded to obtain an information code including a metamerism block.

In order to achieve the above object, the second aspect of the present invention provides a decoding method of an information code, including:

The receiver obtains the pattern of the information code under the target light source, and analyzes the pattern to determine the color of each metameric block included in the pattern;

Using the coding relationship between the color of the target light source and the information, the information segments corresponding to the colors of the metamerism blocks are determined, and the information segments are combined to obtain the decoded information of the information code.

In order to achieve the above object, the third aspect of the present invention provides an information code decoding system, including:

The target light source is used to provide lighting conditions different from natural light sources, and the light is irradiated to the graphic code;

The graphic code at least includes a metamerism block;

The receiver is used to identify the graphic code, acquire the pattern of the graphic code under the target light source, and decode it.

The present invention provides an information code encoding and decoding method and system, wherein the information code encoding method includes: obtaining the information to be encoded, and obtaining the encoding relationship between the color of the target light source and the information, according to the encoding relationship between the color and the information, and the above The information to be encoded is encoded to obtain an information code including a metamerism block. Compared with the prior art, by constructing information codes containing metamerism blocks based on the encoding relationship between color and information, it is possible to associate information codes with patterns, and different information to be encoded can obtain information codes with different color patterns, And because the information code is generated based on the coding relationship between the color of the target light source and the information, the decoding of the information code must also be performed under the target light source to obtain the correct information, so the security performance is stronger.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without creative work.

Fig. 1 is the structural representation of the decoding system of information code in the embodiment of the present invention;

Fig. 2a is a schematic diagram of the rendering effect of the information code under natural light in the embodiment of the present invention;

Fig. 2b is a schematic diagram of the rendering effect of the information code under the target light source in the embodiment of the present invention;

FIG. 3 is a schematic flowchart of an encoding method of an information code in an embodiment of the present invention;

FIG. 4 is a schematic flow diagram of a decoding method of an information code in an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of an information code encoding device in an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of an information code decoding device in an embodiment of the present invention.

Detailed ways

In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Fig. 1, which is a schematic structural diagram of the decoding system of the information code in the embodiment of the present invention, and the decoding system includes:

Target light source, graphic code and receiver;

Among them, the target light source is used to provide lighting conditions different from the natural light source, and the light is irradiated to the graphic code;

The graphic code at least includes a metamerism block, and the metamerism block is generated based on the coding relationship between the color of the target light source and the information.

The above-mentioned receiver is used to identify the graphic code, acquire the pattern of the graphic code under the target light source, and decode it.

In the embodiment of the present invention, the graphic code at least includes a metamerism block, and the metamerism block means that it is the same or similar under natural light, and there is a slight difference under natural light with different color temperatures, but under unnatural light sources, the display The difference is large and can be identified. The metamerism block can also be called a pixel block, and pixel blocks of different colors can represent different information. In this application, the information code is encoded and decoded based on the principle that the colors displayed by the metamerism block under different unnatural light sources are different, so that the information contained in the information code is related to the color of the displayed pattern, and The correct information must be identified under the correct light source to enhance the confidentiality of the information code. For example, if the information code is encoded based on the coding relationship between the color of the light source A and the information, then when the information code is decoded, it must be decoded under the lighting conditions of the light source A to obtain the correct information. If decoding is performed under lighting conditions, the decoded information will be wrong.

Wherein, the above-mentioned target light source is an unnatural light source, which can be any type of artificial light source, or a light source provided by a smart device, and the color difference between the target light source and natural light is greater than the identifiable color difference value, wherein the identifiable color The difference is the minimum value allowed for the color difference between the target light source and the natural light source when the receiver identifies the information code, so that the color difference is large enough to be identified.

For unnatural light sources, the encoding relationship between color and information can be set, and the encoding relationship between color and information is also different for different unnatural light sources. The encoding relationship may be set based on multiple experiments and/or characteristics of the unnatural light source itself, which is not limited here.

In order to better understand the technical solution in the embodiment of the present invention, please refer to Figure 2a, which is a schematic diagram of the presentation effect of the information code in the embodiment of the present invention under natural light, and please refer to Figure 2b, which is the implementation of the present invention The schematic diagram of the rendering effect of the information code under the target light source in the example, from Figure 2a and Figure 2b, it can be determined that under natural light, the colors of each block are the same, but under the target light source, the colors of the blocks are different.

In the embodiment of the present invention, in order to verify whether the light source used in decoding is a matching light source, it is also possible to add a verification code to the information code when encoding the information code to obtain an optimized information code, wherein the verification code is Enter the receiver in the form of a signature. And the verification code may be at a fixed position of the information code, for example, at the beginning position of the information code, or at the end position of the information code.

It should be noted that the above-mentioned graphic codes can be applied to signal transmission technologies such as one-dimensional codes, two-dimensional codes, and three-dimensional codes, and the graphic codes can include other The color blocks are not limited here.

Further, please refer to FIG. 3 , which is a schematic flow chart of the encoding method of the information code in the embodiment of the present invention. The encoding method is realized by the encoding device, and the color and information of various unnatural light sources are set in the encoding device. Coding relationships, including:

Step 301, obtaining the information to be coded, and obtaining the coding relationship between the color of the target light source and the information;

Step 302: Perform encoding according to the encoding relationship between the color and information and the information to be encoded to obtain an information code including a metamerism block.

In the embodiment of the present invention, the coding device will obtain the information to be coded, which can be text information, or pattern information, etc., and obtain the coding relationship between the color of the target light source and the information, wherein the target light source can be pre-coded The type of light source used for encoding can also be the type of light source selected by the operator.

The above step 302 specifically includes:

Step A, splitting the information to be encoded to obtain multiple information segments;

Step B: Find the coding relationship between the color and information, determine the colors corresponding to the multiple information segments, and construct the information codes including the metamerism block according to the colors corresponding to the multiple information segments.

In the embodiment of the present invention, the encoding device splits the information to be encoded to obtain multiple information segments. For example, if it is text information, split it based on the text splitting rules; Split rules to split.

For each information segment, the coding relationship between the color of the target light source and the information will be searched, the color corresponding to the information segment will be determined, and the information code including the metamerism block will be constructed according to the colors corresponding to the multiple information segments. Wherein, the arrangement order of the colors is determined based on the order of the information segments in the information to be encoded.

And further, in order to facilitate the determination of whether the decoded information is correct, the following steps may also be included during encoding:

Step C, adding the verification code of the target light source to the information code to obtain an optimized information code.

The above verification codes are related to the target light source, and each different type of unnatural light source has its corresponding verification code.

It can be understood that FIG. 3 describes the encoding process, and the decoding process will be introduced below, and the decoding process is a decoding system using the information code in the embodiment shown in FIG. 1 . Please refer to FIG. 4, which is a schematic flow chart of the decoding method of the information code in the embodiment of the present invention, including:

Step 401, the receiver obtains the pattern of the information code under the target light source, and analyzes the pattern to determine the color of each metameric block included in the pattern;

Step 402: Using the coding relationship between the color of the target light source and the information, determine the information segments corresponding to the colors of the metamerism blocks, and combine the information segments to obtain the decoded information of the information code.

In the embodiment of the present invention, the information code needs to be placed under the target light source so that the light from the target light source can shine on the information code, and the receiver will obtain the pattern of the information code under the target light source, and analyze the pattern to determine The color of each metameric tile that the pattern contains. It can be understood that for different target light sources, the colors presented by the same information code are different.

And the receiver will use the coding relationship between the color of the target light source and the information to determine the information segments corresponding to the colors of the metamerism blocks, and combine the information segments to obtain the decoded information of the information codes.

Further, in order to determine that the information obtained after decoding is accurate, verification needs to be carried out before decoding, that is, before the above step 402, it also includes:

Step a, obtaining the verification code from the pattern;

Step b. Using the verification code to verify whether the target light source is the light source used when encoding the information code;

Step c, if yes, continue to execute the above step 402.

In the embodiment of the present invention, after the receiver obtains the pattern, it will obtain the verification code from the pattern, and use the verification code to verify whether the target light source is the light source used when encoding the information code. The target light source decodes the information code, and continues to execute the decoding process in step 402 above. If not, it indicates that the target light source decodes the information code to obtain wrong information.

In the embodiment of the present invention, by constructing information codes containing metamerism blocks based on the encoding relationship between color and information, it is possible to associate information codes with patterns, and different information to be encoded can obtain information codes with different color patterns , and since the information code is generated based on the coding relationship between the color of the target light source and the information, the decoding of the information code must also be performed under the target light source to obtain the correct information. Therefore, the security performance is stronger.

Please refer to FIG. 5, which is a schematic structural diagram of an information code encoding device in an embodiment of the present invention, including:

An acquisition module 501, configured to acquire the information to be encoded, and acquire the encoding relationship between the color of the target light source and the information;

The coding module 502 is configured to perform coding according to the coding relationship between the color and the information and the information to be coded to obtain an information code including a metamerism block.

Wherein, the encoding module 502 includes:

A splitting module 5021, configured to split the information to be encoded to obtain multiple information segments;

The search module 5022 is configured to search for the coding relationship between the color and the information, respectively determine the colors corresponding to the multiple information segments, and construct the information code including the metamerism block according to the colors corresponding to the multiple information segments.

Further, the above-mentioned device also includes:

An adding module 503, configured to add the verification code of the target light source to the information code to obtain an optimized information code.

Further, please refer to FIG. 6, which is a schematic structural diagram of an information code decoding device in an embodiment of the present invention. The decoding device may be a receiver, including:

The acquisition and analysis module 601 is used to acquire the pattern of the information code under the target light source, and analyze the pattern to determine the color of each metamerism block included in the pattern;

The combination module 602 is configured to use the coding relationship between the color of the target light source and the information to determine the information segments corresponding to the colors of the metamerism blocks, and combine the information segments to obtain the decoded information code information.

Wherein, the decoding device also includes:

A verification code acquisition module 603, used to obtain a verification code from the pattern before the combination module 602;

A verification module 604, configured to use the verification code to verify whether the target light source is the light source used when encoding the information code;

The execution module 605 is configured to execute the combination module 602 if yes.

In the embodiment of the present invention, the encoding device shown in FIG. 5 and the decoding device shown in FIG. 6 are based on the encoding relationship between color and information to construct information codes containing metamerism blocks, so that information codes and patterns can be combined In association, different information to be encoded can obtain information codes with different color patterns, and since the information codes are generated based on the coding relationship between the color of the target light source and the information, the decoding of the information codes must also be decoded under the target light source In order to obtain the correct information, therefore, the confidentiality performance is stronger

In the embodiment of the present invention, the encoding method in the embodiment shown in FIG. 3 is implemented by an encoding device, the encoding device includes a memory, a processor, and a computer program stored in the memory and run on the processor, and the processor When the computer program is executed, various steps in the encoding method of the information code as shown in FIG. 3 can be realized. The decoding method in the embodiment shown in FIG. 4 is realized by a receiver, the receiver includes a memory, a processor, and a computer program stored on the memory and run on the processor, and when the processor executes the computer program, Each step in the decoding method of the information code as shown in FIG. 4 can be realized.

In addition, the present invention also provides a readable storage medium on which a computer program is stored. When the computer program is executed by the processor, if the computer program is related to encoding, the encoding method of the information code as shown in FIG. 3 can be realized. For each step in the method, if the computer program is related to decoding, each step in the decoding method of the information code as shown in FIG. 4 can be realized.

In the several embodiments provided in this application, it should be understood that the disclosed devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the modules is only a logical function division. In actual implementation, there may be other division methods. For example, multiple modules or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or modules may be in electrical, mechanical or other forms.

The modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules, that is, they may be located in one place, or may be distributed to multiple network modules. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional module in each embodiment of the present invention may be integrated into one processing module, each module may exist separately physically, or two or more modules may be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules.

If the integrated modules are realized in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk, and other media that can store program codes.

It should be noted that, for the sake of simplicity of description, the aforementioned method embodiments are expressed as a series of action combinations, but those skilled in the art should know that the present invention is not limited by the described action sequence. Because of the present invention, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification belong to preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

In the foregoing embodiments, the descriptions of each embodiment have their own emphases, and for parts not described in detail in a certain embodiment, reference may be made to relevant descriptions of other embodiments.

The above is a description of an information code encoding and decoding method and decoding system provided by the present invention. For those skilled in the art, according to the idea of the embodiment of the present invention, there will be changes in the specific implementation and application scope. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims (10)

1. an encoding method of information code, is characterized in that, described method comprises: Obtain the information to be encoded, and obtain the encoding relationship between the color of the target light source and the information; Encoding is performed according to the encoding relationship between the color and information and the information to be encoded to obtain an information code including a metamerism block. 2. The method according to claim 1, wherein the encoding is performed according to the encoding relationship between the color and information and the information to be encoded to obtain an information code comprising a metamerism block, comprising: Splitting the information to be encoded to obtain multiple information segments; Searching for the coding relationship between the color and information, determining the colors corresponding to the multiple information segments, and constructing information codes including metamerism blocks according to the colors corresponding to the multiple information segments. 3. The method according to claim 1 or 2, characterized in that the method further comprises: Adding the verification code of the target light source to the information code to obtain an optimized information code. 4. The method according to claim 1, wherein the target light source is any type of artificial light source, or a smart device has its own light source, and the color difference between the target light source and natural light is greater than the identifiable color difference value, the identifiable color difference value is the allowable minimum value of the color difference between the target light source and the natural light source when the receiver recognizes the information code. 5. The method according to claim 1, wherein the graphic code is applied to a one-dimensional code, two-dimensional code or three-dimensional code. 6. A decoding method of an information code, characterized in that the method comprises: The receiver obtains the pattern of the information code under the target light source, and analyzes the pattern to determine the color of each metameric block included in the pattern; Using the coding relationship between the color of the target light source and the information, the information segments corresponding to the colors of the metamerism blocks are determined, and the information segments are combined to obtain the decoded information of the information code. 7. The method according to claim 6, characterized in that, the encoding relationship between the color of the target light source and the information is utilized before, further comprising: Obtain a verification code from said pattern; using the verification code to verify whether the target light source is the light source used when encoding the information code; If so, continue to execute the step of determining the information segments corresponding to the colors of the metamerism blocks by using the coding relationship between the color of the target light source and the information. 8. A decoding system for information codes, comprising: a target light source, a graphic code and a receiver; The target light source is used to provide lighting conditions different from natural light sources, and the light is irradiated to the graphic code; The graphic code at least includes a metamerism block; The receiver is used to identify the graphic code, acquire the pattern of the graphic code under the target light source, and decode it. 9. The decoding system according to claim 8, wherein the graphic code further includes a verification code, and the verification code is input into the receiver in the form of a feature code. 10. The decoding system according to claim 8, characterized in that, the target light source is any type of artificial light source, or the smart device has its own light source, and the color difference between the target light source and natural light is greater than the recognizable color Difference value, the identifiable color difference value is the minimum allowable color difference between the target light source and the natural light source when the receiver recognizes the information code.