CN108280502B - QR code capacity improving method and terminal - Google Patents
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- CN108280502B CN108280502B CN201810047927.9A CN201810047927A CN108280502B CN 108280502 B CN108280502 B CN 108280502B CN 201810047927 A CN201810047927 A CN 201810047927A CN 108280502 B CN108280502 B CN 108280502B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
- G06K19/06037—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking multi-dimensional coding
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
- G06K19/06046—Constructional details
- G06K19/0614—Constructional details the marking being selective to wavelength, e.g. color barcode or barcodes only visible under UV or IR
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Abstract
The invention provides a QR code capacity improving method and a terminal, wherein the method comprises the following steps: splitting information to be coded into m groups of information; respectively coding m groups of information by a QR code coding method to generate m QR codes, wherein the QR code version numbers corresponding to the m QR codes are the same; randomly taking one QR code from the m QR codes to obtain a first QR code; dividing each module of the first QR code into a areas, wherein a is not less than m, and m areas in the a areas have one-to-one correspondence with m QR codes; and setting the color of each region of each module as the color of the corresponding module of the QR code corresponding to the region to obtain the target two-dimensional code. According to the method and the terminal, the data storage capacity can be improved on the premise that the size of the two-dimensional code picture and the size of the module are not changed.
Description
Technical Field
The invention relates to the technical field of QR codes, in particular to a QR code capacity improving method and a terminal.
Background
The QR code is one of two-dimensional bar codes, and is widely used for information sharing at present. The QR code picture consists of regular black and white square modules, wherein most of the modules are data modules for storing coded data, and the rest of the modules are functional modules for providing functional information such as positioning and the like.
The module data of the QR code is related to the version, the higher the version is, the more the module number is, and the larger the capacity for storing information is. But the higher version of the QR code uses more complex functional modules. And in the case of a constant module size, the larger the required picture size.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the QR code capacity improving method and the terminal provided by the invention can improve the data storage capacity on the premise of not changing the size of the two-dimensional code picture and the size of the module.
In order to solve the technical problem, the invention provides a method for improving the capacity of a QR code, which comprises the following steps:
s1: splitting information to be coded into m groups of information;
s2: respectively coding m groups of information by a QR code coding method to generate m QR codes, wherein the QR code version numbers corresponding to the m QR codes are the same;
s3: randomly taking one QR code from the m QR codes to obtain a first QR code; dividing each module of the first QR code into a areas, wherein a is not less than m, and m areas in the a areas have one-to-one correspondence with m QR codes;
s4: and setting the color of each region of each module as the color of the corresponding module of the QR code corresponding to the region to obtain the target two-dimensional code.
The invention also provides a QR code capacity improving terminal, which comprises a memory, a processor and a computer program which is stored on the memory and can be run on the processor, wherein the processor executes the program to realize the following steps:
s1: splitting information to be coded into m groups of information;
s2: respectively coding m groups of information by a QR code coding method to generate m QR codes, wherein the QR code version numbers corresponding to the m QR codes are the same;
s3: randomly taking one QR code from the m QR codes to obtain a first QR code; dividing each module of the first QR code into a areas, wherein a is not less than m, and m areas in the a areas have one-to-one correspondence with m QR codes;
s4: and setting the color of each region of each module as the color of the corresponding module of the QR code corresponding to the region to obtain the target two-dimensional code.
The invention has the beneficial effects that:
the invention provides a QR code capacity improving method and a terminal, wherein information is divided into m groups, m QR codes are obtained through coding, and the version numbers of the m QR codes are the same, so that the sizes of pictures corresponding to different QR codes are the same, and the shapes and sizes of modules corresponding to different QR codes at the same position are the same; simultaneously taking one QR code, dividing each module of the QR code into a areas, wherein m areas in the a areas correspond to m QR codes one by one, and setting the color of each area as the color of the corresponding module of the QR code corresponding to the area; by the method, the coding information of the modules corresponding to the m QR codes can be stored in the m areas of each module, namely, the information of the modules corresponding to the plurality of QR codes can be stored only by one module, and the data storage capacity is improved by m times on the premise of not changing the size of a QR code picture and the size of the module.
Drawings
Fig. 1 is a schematic diagram illustrating major steps of a QR code capacity increasing method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a QR code capacity enhancing terminal according to an embodiment of the present invention;
description of reference numerals:
1. a memory; 2. a processor.
Detailed Description
In order to explain technical contents, objects and effects of the present invention in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
The most key concept of the invention is as follows: the information is divided into m groups, m QR codes with the same version number are obtained through coding, any one of the QR codes is taken, each module of the QR code is divided into a areas, m areas in the a areas correspond to m QR codes one by one, and the color of each area of each module is set to be the color of the corresponding module of the corresponding QR code, so that the target two-dimensional code is obtained.
Referring to fig. 1, the method for increasing the capacity of a QR code provided by the present invention includes the following steps:
s1: splitting information to be coded into m groups of information;
s2: respectively coding m groups of information by a QR code coding method to generate m QR codes, wherein the QR code version numbers corresponding to the m QR codes are the same;
s3: randomly taking one QR code from the m QR codes to obtain a first QR code; dividing each module of the first QR code into a areas, wherein a is not less than m, and m areas in the a areas have one-to-one correspondence with m QR codes;
s4: and setting the color of each region of each module as the color of the corresponding module of the QR code corresponding to the region to obtain the target two-dimensional code.
As can be seen from the above description, the present invention provides a method for increasing the capacity of a QR code, in which information is divided into m groups, m QR codes are obtained through encoding, and the version numbers of the m QR codes are the same, so that it is ensured that the sizes of corresponding pictures of different QR codes are the same, and the shapes and sizes of corresponding modules of different QR codes at the same position are the same; simultaneously taking one QR code, dividing each module of the QR code into a areas, wherein m areas in the a areas correspond to m QR codes one by one, and setting the color of each area as the color of the corresponding module of the QR code corresponding to the area; by the method, the coding information of the modules corresponding to the m QR codes can be stored in the m areas of each module, namely, the information of the modules corresponding to the plurality of QR codes can be stored only by one module, and the data storage capacity is improved by m times on the premise of not changing the size of a QR code picture and the size of the module.
Further, the step S4 is followed by:
and decoding the target two-dimensional code to obtain decoding information.
Further, "decoding the target two-dimensional code to obtain decoding information" specifically includes:
acquiring a target picture corresponding to the target two-dimensional code;
judging whether a QR code exists in the target picture or not by a QR code decoding method;
if the two-dimensional code exists, acquiring the color of each area included by each module in the target two-dimensional code;
obtaining m QR code coded information according to the one-to-one correspondence and the color of each region included by each module;
and obtaining decoding information according to the coding information of the m QR codes.
As can be seen from the above description, by the above method, m pieces of QR code encoded information can be obtained by decoding, and the decoded information, that is, the original information to be encoded, can be obtained by combining the encoded information.
Further, "obtaining the decoding information according to the coding information of the m QR codes" specifically includes:
decoding the coded information of the m QR codes to obtain m information;
acquiring a splitting method for splitting information to be coded, and acquiring a combined method of combined information corresponding to the splitting method;
and combining the m pieces of information according to the combination method to obtain the decoding information.
From the above description, it can be known that, by the above method, the decoding information can be obtained quickly, and it is ensured that the decoding information is consistent with the original information to be encoded.
Further, the S1 specifically includes:
and splitting the information to be coded according to the storage sequence of the information to be coded to obtain m groups of information.
From the above description, it can be known that the information to be encoded can be rapidly and effectively split by the above method, and the above splitting method facilitates the combination of the subsequent information.
Referring to fig. 2, the present invention provides a QR code capacity enhancing terminal, including a memory 1, a processor 2, and a computer program stored in the memory 1 and operable on the processor 2, where the processor 2 implements the following steps when executing the program:
s1: splitting information to be coded into m groups of information;
s2: respectively coding m groups of information by a QR code coding method to generate m QR codes, wherein the QR code version numbers corresponding to the m QR codes are the same;
s3: randomly taking one QR code from the m QR codes to obtain a first QR code; dividing each module of the first QR code into a areas, wherein a is not less than m, and m areas in the a areas have one-to-one correspondence with m QR codes;
s4: and setting the color of each region of each module as the color of the corresponding module of the QR code corresponding to the region to obtain the target two-dimensional code.
Further, the QR code capacity increasing terminal further includes, after S4:
and decoding the target two-dimensional code to obtain decoding information.
Further, the QR code capacity enhancing terminal, "decode the target two-dimensional code to obtain decoded information" specifically includes:
acquiring a target picture corresponding to the target two-dimensional code;
judging whether a QR code exists in the target picture or not by a QR code decoding method;
if the two-dimensional code exists, acquiring the color of each area included by each module in the target two-dimensional code;
obtaining m QR code coded information according to the one-to-one correspondence and the color of each region included by each module;
and obtaining decoding information according to the coding information of the m QR codes.
Further, the QR code capacity increasing terminal, obtaining decoding information according to the coding information of the m QR codes specifically is:
decoding the coded information of the m QR codes to obtain m information;
acquiring a splitting method for splitting information to be coded, and acquiring a combined method of combined information corresponding to the splitting method;
and combining the m pieces of information according to the combination method to obtain the decoding information.
Further, in the QR code capacity increasing terminal, the S1 specifically is:
and splitting the information to be coded according to the storage sequence of the information to be coded to obtain m groups of information.
The first embodiment of the invention is as follows:
the invention provides a QR code capacity improving method, which comprises the following steps:
s1: splitting information to be coded into m groups of information;
the S1 specifically includes:
and splitting the information to be coded according to the storage sequence of the information to be coded to obtain m groups of information.
Preferably, the information to be coded with the length of N to be coded is sequentially split into m-1 groups of information with the length of N/m (N/m represents that the value of N/m is rounded upwards), and the rest group of information with the length of N- (m-1) × N/m, wherein m groups of information are total;
s2: respectively coding m groups of information by a QR code coding method to generate m QR codes, wherein the QR code version numbers corresponding to the m QR codes are the same;
and the pixel size of the QR code module on the corresponding QR code picture is at least 3 x 3 pixels.
S3: randomly taking one QR code from the m QR codes to obtain a first QR code; dividing each module of the first QR code into a areas, wherein a is not less than m, and m areas in the a areas have one-to-one correspondence with m QR codes;
s4: setting the color of each region of each module as the color of the corresponding module of the QR code corresponding to the region to obtain a target two-dimensional code;
since the generated two-dimensional code module often includes a plurality of pixel picture areas, and the 0-1 bit stream (binary information) extracted during decoding mainly depends on the pixel value of the central part of the module, the area outside the central position can be used for storing more data. That is, more 0-1 bit streams are stored at positions outside the central area of the original module according to a certain design rule, so that a plurality of QR codes are fused into a two-dimensional code; for example, the original information is divided into 5 parts, QR codes are respectively generated, and finally, five QR codes are fused into one two-dimensional code. The specific fusion method comprises the following steps: for example, each module is divided into five regions based on the first QR code. Taking module i as an example, each QR code has module i at the same position. Dividing a module i of the first QR code into five regions (first to fifth regions), setting the pixel color of the first region as the color represented by 0/1 bit values corresponding to the module i of the first QR code, setting the pixel color of the second region as the color represented by 0/1 bit values corresponding to the module i of the second QR code, setting the pixel color of the third region as the color represented by 0/1 bit values corresponding to the module i of the third QR code, setting the pixel color of the fourth region as the color represented by 0/1 bit values corresponding to the module i of the fourth QR code, and setting the pixel color of the fifth region as the color represented by 0/1 bit values corresponding to the module i of the fifth QR code; according to the method, the colors of all the areas of each module of the first QR code can be set, and the target two-dimensional code can be obtained. According to the method, the colors of all the areas of each module of the first QR code can be set, and the target two-dimensional code can be obtained.
The method comprises the following steps that each module is required to be divided into a plurality of areas in the center and the periphery, the dividing method is not unique, the dividing basis is that the number of divided parts is larger than or equal to m, and the picture of each area at least comprises 1 pixel;
s5: decoding the target two-dimensional code to obtain decoding information;
the S5 specifically includes:
acquiring a target picture corresponding to the target two-dimensional code;
judging whether a QR code exists in the target picture or not by a QR code decoding method;
if the two-dimensional code exists, acquiring the color of each area included by each module in the target two-dimensional code;
obtaining m QR code coded information according to the one-to-one correspondence and the color of each region included by each module;
and obtaining decoding information according to the coding information of the m QR codes.
When decoding, judging whether the two-dimensional code exists in the input picture by adopting a conventional QR code decoding method, if so, carrying out necessary preprocessing on the image containing the two-dimensional code, wherein the preprocessing comprises the steps of restoring the deformed two-dimensional code area into a square through projection transformation, removing the non-two-dimensional code area through cutting operation and the like. Then, according to the dividing mode used in coding, the pixel information of each divided region is checked in sequence to restore the original m pieces of information;
the "obtaining the decoding information according to the coding information of the m QR codes" specifically includes:
decoding the coded information of the m QR codes to obtain m information;
acquiring a splitting method for splitting information to be coded, and acquiring a combined method of combined information corresponding to the splitting method;
and combining the m pieces of information according to the combination method to obtain the decoding information.
The invention successfully improves the capacity of the original QR code by nearly m times. For example, due to the module division (division into 5 parts) shown in fig. 1, originally, one module can only represent 0/1 information with 1 bit, and now can represent 0/1 information with 5 bits. Therefore, under the condition that the version is not changed, the method effectively improves the capacity of the QR code.
The second embodiment of the invention is as follows:
the invention provides a QR code capacity improvement terminal, which comprises a memory, a processor and a computer program which is stored on the memory and can be run on the processor, wherein the processor executes the program and realizes the following steps:
s1: splitting information to be coded into m groups of information;
the S1 specifically includes:
and splitting the information to be coded according to the storage sequence of the information to be coded to obtain m groups of information.
Preferably, the information to be coded with the length N to be coded is sequentially split into the information with the length N
Representing rounding up the value of N/m), and the remaining set of information is of length
M groups of information;
s2: respectively coding m groups of information by a QR code coding method to generate m QR codes, wherein the QR code version numbers corresponding to the m QR codes are the same;
and the pixel size of the QR code module on the corresponding QR code picture is at least 3 x 3 pixels.
S3: randomly taking one QR code from the m QR codes to obtain a first QR code; dividing each module of the first QR code into a areas, wherein a is not less than m, and m areas in the a areas have one-to-one correspondence with m QR codes;
s4: setting the color of each region of each module as the color of the corresponding module of the QR code corresponding to the region to obtain a target two-dimensional code;
since the generated two-dimensional code module often includes a plurality of pixel picture areas, and the 0-1 bit stream (binary information) extracted during decoding mainly depends on the pixel value of the central part of the module, the area outside the central position can be used for storing more data. That is, more 0-1 bit streams are stored at positions outside the central area of the original module according to a certain design rule, so that a plurality of QR codes are fused into a two-dimensional code; for example, the original information is divided into 5 parts, QR codes are respectively generated, and finally, five QR codes are fused into one two-dimensional code. The specific fusion method comprises the following steps: for example, each module is divided into five regions based on the first QR code. Taking module i as an example, each QR code has module i at the same position. Dividing a module i of the first QR code into five regions (first to fifth regions), setting the pixel color of the first region as the color represented by 0/1 bit values corresponding to the module i of the first QR code, setting the pixel color of the second region as the color represented by 0/1 bit values corresponding to the module i of the second QR code, setting the pixel color of the third region as the color represented by 0/1 bit values corresponding to the module i of the third QR code, setting the pixel color of the fourth region as the color represented by 0/1 bit values corresponding to the module i of the fourth QR code, and setting the pixel color of the fifth region as the color represented by 0/1 bit values corresponding to the module i of the fifth QR code; according to the method, the colors of all the areas of each module of the first QR code can be set, and the target two-dimensional code can be obtained.
The method comprises the following steps that each module is required to be divided into a plurality of areas in the center and the periphery, the dividing method is not unique, the dividing basis is that the number of divided parts is larger than or equal to m, and the picture of each area at least comprises 1 pixel;
s5: decoding the target two-dimensional code to obtain decoding information;
the S5 specifically includes:
acquiring a target picture corresponding to the target two-dimensional code;
judging whether a QR code exists in the target picture or not by a QR code decoding method;
if the two-dimensional code exists, acquiring the color of each area included by each module in the target two-dimensional code;
obtaining m QR code coded information according to the one-to-one correspondence and the color of each region included by each module;
and obtaining decoding information according to the coding information of the m QR codes.
When decoding, judging whether the two-dimensional code exists in the input picture by adopting a conventional QR code decoding method, if so, carrying out necessary preprocessing on the image containing the two-dimensional code, wherein the preprocessing comprises the steps of restoring the deformed two-dimensional code area into a square through projection transformation, removing the non-two-dimensional code area through cutting operation and the like. Then, according to the dividing mode used in coding, the pixel information of each divided region is checked in sequence to restore the original m pieces of information;
the "obtaining the decoding information according to the coding information of the m QR codes" specifically includes:
decoding the coded information of the m QR codes to obtain m information;
acquiring a splitting method for splitting information to be coded, and acquiring a combined method of combined information corresponding to the splitting method;
and combining the m pieces of information according to the combination method to obtain the decoding information.
In summary, the present invention provides a method and a terminal for improving capacity of a QR code, where information is divided into m groups, m QR codes are obtained through encoding, and the version numbers of the m QR codes are the same, so as to ensure that the sizes of corresponding pictures of different QR codes are the same, and the shapes and sizes of corresponding modules of different QR codes at the same position are the same; simultaneously taking one QR code, dividing each module of the QR code into a areas, wherein m areas in the a areas correspond to m QR codes one by one, and setting the color of each area as the color of the corresponding module of the QR code corresponding to the area; by the method, the coding information of the modules corresponding to the m QR codes can be stored in the m areas of each module, namely, the information of the modules corresponding to the plurality of QR codes can be stored only by one module, and the data storage capacity is improved by m times on the premise of not changing the size of a QR code picture and the size of the module.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A QR code capacity improving method is characterized by comprising the following steps:
s1: splitting information to be coded into m groups of information;
s2: respectively coding m groups of information by a QR code coding method to generate m QR codes, wherein the QR code version numbers corresponding to the m QR codes are the same;
s3: randomly taking one QR code from the m QR codes to obtain a first QR code; dividing each module of the first QR code into a areas, wherein a is not less than m, and m areas in the a areas have one-to-one correspondence with m QR codes;
s4: and setting the color of each region of each module as the color of the corresponding module of the QR code corresponding to the region to obtain the target two-dimensional code.
2. The QR code capacity boosting method according to claim 1, wherein after the S4, the method further comprises:
and decoding the target two-dimensional code to obtain decoding information.
3. The QR code capacity enhancement method according to claim 2, wherein "decoding the target two-dimensional code to obtain decoded information" specifically includes:
acquiring a target picture corresponding to the target two-dimensional code;
judging whether a QR code exists in the target picture or not by a QR code decoding method;
if the two-dimensional code exists, acquiring the color of each area included by each module in the target two-dimensional code;
obtaining m QR code coded information according to the one-to-one correspondence and the color of each region included by each module;
and obtaining decoding information according to the coding information of the m QR codes.
4. The method for improving the capacity of the QR code according to claim 3, wherein "obtaining the decoding information according to the encoded information of the m QR codes" specifically includes:
decoding the coded information of the m QR codes to obtain m information;
acquiring a splitting method for splitting information to be coded, and acquiring a combined method of combined information corresponding to the splitting method;
and combining the m pieces of information according to the combination method to obtain the decoding information.
5. The QR code capacity enhancement method according to claim 1, wherein the S1 specifically is:
and splitting the information to be coded according to the storage sequence of the information to be coded to obtain m groups of information.
6. A QR code capacity boosting terminal comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, and is characterized in that the processor executes the program to realize the following steps:
s1: splitting information to be coded into m groups of information;
s2: respectively coding m groups of information by a QR code coding method to generate m QR codes, wherein the QR code version numbers corresponding to the m QR codes are the same;
s3: randomly taking one QR code from the m QR codes to obtain a first QR code; dividing each module of the first QR code into a areas, wherein a is not less than m, and m areas in the a areas have one-to-one correspondence with m QR codes;
s4: and setting the color of each region of each module as the color of the corresponding module of the QR code corresponding to the region to obtain the target two-dimensional code.
7. The QR code capacity boosting terminal according to claim 6, further comprising after S4:
and decoding the target two-dimensional code to obtain decoding information.
8. The QR code capacity enhancement terminal according to claim 7, wherein "decoding the target two-dimensional code to obtain decoded information" specifically includes:
acquiring a target picture corresponding to the target two-dimensional code;
judging whether a QR code exists in the target picture or not by a QR code decoding method;
if the two-dimensional code exists, acquiring the color of each area included by each module in the target two-dimensional code;
obtaining m QR code coded information according to the one-to-one correspondence and the color of each region included by each module;
and obtaining decoding information according to the coding information of the m QR codes.
9. The QR code capacity enhancement terminal according to claim 8, wherein the "obtaining the decoding information according to the encoded information of the m QR codes" specifically includes:
decoding the coded information of the m QR codes to obtain m information;
acquiring a splitting method for splitting information to be coded, and acquiring a combined method of combined information corresponding to the splitting method;
and combining the m pieces of information according to the combination method to obtain the decoding information.
10. The QR code capacity boosting terminal according to claim 6, wherein the S1 specifically is:
and splitting the information to be coded according to the storage sequence of the information to be coded to obtain m groups of information.
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| CN108280502A (en) | 2018-07-13 |
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