CN104657698B - A kind of color 2 D code decoding method for carrying several black and white Quick Response Codes - Google Patents
A kind of color 2 D code decoding method for carrying several black and white Quick Response Codes Download PDFInfo
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Abstract
The invention discloses a kind of color 2 D code coding and decoding methods for carrying several black and white Quick Response Codes, first according to the RGB principles of three primary colours, the big multiple color of average color difference values is chosen as the pre-selection encoded colors of color 2 D code, and order arrangement is carried out to it, one arrangement sequence number of correspondence per middle color.The invention provides a kind of colored decoding method of Large Copacity that can be mutually compatible with black and white 2 D code information encoding and decoding standard, method can make the upgrading that plug-in unit completes general black and white Quick Response Code software whereby, improve the information capacity of Quick Response Code.
Description
Technical field
The invention belongs to planar bar code technology field, it is related to a kind of color 2 D code for carrying several black and white Quick Response Codes and compiles
Code/coding/decoding method, relates in particular to a kind of color coding approach that several black and white Quick Response Codes are multiplexed and demultiplexed.
Technical background
Barcode technology is to integrate coding, printing, identification, the complex art of data acquisition and processing (DAP), and bar code is divided into again
One-dimension code and Quick Response Code, Quick Response Code in addition to possessing that one-dimension code cost is low, propagating the advantages of facilitating, also with information capacity it is big,
Reliability is high, can represent diversified forms data, the advantages of security and antiforge purpose is strong.The external research to planar bar code technology starts from 20 generation
Record the end of the eighties.A variety of code systems are had been developed that in terms of two-dimensional code symbol presentation technology research, PDF417, QR is common are
Code, Data Matrix etc., and International Organization for standardization has formulated the ISO/IEC standards of these Quick Response Codes.China pair
The research of planar bar code technology is started from 1993, Article Numbering Center of China to several conventional Quick Response Code PDF417, QR Code,
Data Matrix etc. technical specification has carried out translation and follow-up study, and has formulated the state of two Quick Response Codes on this basis
Family's standard：GB/T17172-1997《417 barcodes》, GB/T 18284-2000《Quick response matrix code》.
Planar bar code technology is mainly used in traffic administration, logistics, all kinds of certificates, all kinds of forms and bill, industrial production line
Automation and e-commerce platform entrance etc..Recently as wireless network and mobile communication technology, mobile call technology and shifting
The depth of dynamic multimedia technology is combined, and Quick Response Code is popularized in popular life.But being measured with social information increases
And the extension of Quick Response Code application field is, it is necessary to which Quick Response Code can accommodate more information, and current black and white Quick Response Code only uses two kinds
Color, limits the raising of information capacity, and color 2 D code is developed in this context.The Gavin of Microsoft Research
Jancke has invented a color 2 D code, has four colors and eight color two kinds of version, its unit module is triangle, to information flow
Coding uses multi-system, and 2~3 times of packing density can be about improved relative to black and white Quick Response Code.Zhejiang Polytechnical University Jia Hua
State etc. proposes a kind of high compression ratio color 2 D code coding rule towards Chinese character.Agricultural University Of South China discloses a kind of color
It is superimposed two-dimensional code generation method.As a whole, current color 2 D code decoding method is all based on multilevel code to carry
High information capacity, this coding method can not be mutually compatible with the encoding and decoding of black and white Quick Response Code.However, currently common black and white Quick Response Code
Reading equipment and encoding and decoding software obtained large area popularization, how in the black and white Quick Response Code soft hardware equipment base popularized
The 2 D code information exchange that Large Copacity is realized on plinth is a direction of planar bar code technology development.
The content of the invention
It is an object of the invention to provide a kind of Large Copacity that can be mutually compatible with black and white 2 D code information encoding and decoding standard is colored
Decoding method.Method can make the upgrading that plug-in unit completes general black and white Quick Response Code software whereby, and the information for improving Quick Response Code is held
Amount.
The concrete technical scheme of the present invention is as follows：
A kind of color 2 D code decoding method for carrying several black and white Quick Response Codes, including color coding approach and colour
Coding/decoding method, the color coding approach is not to carry out multilevel code to extend the information capacity of Quick Response Code for information flow,
But the grouping of bits of several common black and white Quick Response Code same grid locations is encoded, so as to realize with a secondary color 2 D
Code carries the function of several black and white Quick Response Codes simultaneously.
Preferably, the color coding approach comprises the following steps：
（1）A variety of encoded colors are selected according to RGB color vector spacing size, and assign each color one arrangement sequence
Number, for example select red, yellow, blue, green, blue or green, purple ... as encoded colors are preselected, then the corresponding sequence number of each color is followed successively by 1,2,
3,4,5,6 ...；
（2）The common black and white Quick Response Code of generation K width, and being sorted as needed；
（3）The code element of every width black and white Quick Response Code is scanned successively, and the code element of same grid position is extracted into the row by Quick Response Code
Row order composition K bits；
（4）If binary number is 0, choosing is white（Or it is black）Color corresponds to the color of code element as colour code, if binary number
Each is 1, then selects black（Or it is white）Otherwise color chooses K bits correspondence sequence number as the color of the colour code code element
Preselected color as the encoded colors of color 2 D code respective symbol, all code elements are scanned in this approach, and then to generate one secondary colored
Quick Response Code.
Preferably, the colour decoding method comprises the following steps：
（1）Color 2 D code is read with Versatile two-dimension code reading terminals, and with general Quick Response Code localization method to colour
Quick Response Code is positioned and mesh generation；
（2）Quick Response Code code element to gridding is scanned one by one, extracts the rgb value of each code element image, and foundation should
Euler's Distance Judgment code element color between RGB vectors and pre-selection encoded colors RGB vectors；
（3）The encoded colors number M of color 2 D code is counted, and the corresponding sequence number of each code element color is converted into log2M
Binary number；
（4）Log is read respectively2The binary value of each in M-bit binary number, and assign log respectively successively2M black and white
The symbol value of Quick Response Code, log can then be obtained by scanning all code elements with this2M common black and white Quick Response Codes.
Preferably for the binary coding method of the adopting international standards of coding of original information stream, coloud coding is
To the secondary coding of the black and white Quick Response Code of the standards such as QR codes, PDF417 codes.
Preferably, the view finding figure and the color and the phase of black and white Quick Response Code in functional module area of the color 2 D code generated
Together.
Preferably, the target of its decoding is decomposition of the colour code to multiple black and white Quick Response Codes, rather than to the solution of information flow
Black and white two-dimensional code decoder/method of the information flow available standards contained in code, Quick Response Code is understood.
Preferably, color 2 D code can be positioned and gridding by general black and white two-dimensional code decoder/method.
Technical scheme is decomposed into black and white code including multiplexing and encoding and colour code that black and white code synthesizes colour code
Demultiplexing decode two parts.
The multiplexing and encoding method of the color 2 D code includes following steps：
（1）Black and white Quick Response Code coding rule such as QR Code, PDF417 or Data Matrix with standard etc. are to information flow
Encoded, generate K width（K≥1）Black and white Quick Response Code.Then black and white Quick Response Code is ranked up by the precedence of generation, and
It is indicated respectively with A, B, C ... letter；
（2）According to the RGB principles of three primary colours, the big multiple color of adjacent color vector distance is chosen as coding candidate's face
Color, such as red, yellow, blue, green, blue or green, purple ..., and one numbering of each color is assigned respectively such as：Red=1, yellow=2, blue=3, green=4,
Green grass or young crops=5, purple=6 ... etc..
（3）Scan the code element of all black and white Quick Response Codes successively respectively, extract the code value of each code element in same grid locations, and
A K binary values are constituted by the ordering of black and white Quick Response Code.3 width black and white Quick Response Codes are for example extracted successively in (n, m) net
The symbol value that case is put, respectively A (n, m)=1, B (n, m)=0 and C (n, m)=1, the then binary value constituted are 101.
（4）The blank Quick Response Code grid of one and black and white Quick Response Code same mesh number are generated, then in each grid position root
The K positions binary value constituted according to the corresponding code value of K width black and white Quick Response Codes inserts candidate color, and specific rules are as follows：
If 1. corresponding K binary value is 0 on certain grid position, the grid inserts white（Or black）；
If 2. corresponding each symbol value of black and white Quick Response Code is all 1 on certain grid position, the grid inserts black（Or it is white
Color）；
3. in addition to both the above situation, then in default candidate color table, choose and the face corresponding to K binary values
Color inserts the grid, and 3 binary values of such as certain grid are 101, then（101）2=(5)10, so choosing cyan corresponding with 5
It is used as the Fill Color of the grid.
（5）The rule more than, all grids that blank Quick Response Code is scanned successively select corresponding Fill Color, ultimately produce
One color 2 D code comprising K width black and white Quick Response Codes.
The demultiplexing coding/decoding method of color 2 D code to black and white Quick Response Code of the present invention includes following steps：
（1）Color 2 D code is read with Versatile two-dimension code reading terminals, and with general Quick Response Code localization method to colour
Quick Response Code is positioned and mesh generation；
（2）Quick Response Code code element to gridding is scanned one by one, extracts the rgb value of each code element image, and foundation should
Euler's Distance Judgment code element color between RGB vectors and pre-selection encoded colors RGB vectors；
（3）Count encoded colors number M=2 of color 2 D codeK, and the corresponding sequence number of each code element color is converted into log2M
Bit, specific conversion method is as follows：
If it is white 1. to detect the encoded colors of certain grid（Or black）, then the mesh color be converted to binary value and be
0 log2M-bit binary number；
If the encoded colors for 2. detecting certain grid are black（Or white）, then the mesh color be converted to the decimal system and be
(M-1)10Log2M-bit binary number；
3. in addition to both the above situation, then corresponding sequence is searched in pre-set color table according to detected code element color
Number, it is converted into log2M-bit binary number；
（4）Generate log2The blank Quick Response Code of M width and colour code same mesh number, then reads in color 2 D code one by one
Log on each grid position2M-bit binary number, and log is assigned successively by the binary value of each in binary number2M empty
In the corresponding grid of white Quick Response Code, black-white colors are inserted finally according to the binary value in grid, scanning all code elements with this then may be used
To obtain log2M common black and white Quick Response Codes.
（5）The common black and white Quick Response Code that decoding is obtained sequentially inputs two-dimensional code decoder, you can finally solve therein
Raw information flow data.
The invention provides a kind of colored encoding and decoding of Large Copacity that can be mutually compatible with black and white 2 D code information encoding and decoding standard
Method, whereby method can make the upgrading that plug-in unit completes general black and white Quick Response Code software, improve the information capacity of Quick Response Code.
Brief description of the drawings
The two secondary common black and white two that Fig. 1 and Fig. 2 generates for coloud coding implementation process in the embodiment of the present invention
Tie up code schematic diagram；
Fig. 3 be invention colour decoding implementation process be cataloged procedure inverse process schematic diagram.
【Embodiment】
The embodiment that the invention will now be described in detail with reference to the accompanying drawings, but be not the limit to the scope of the present invention
System.Present invention specific implementation includes coloud coding and decoding two parts, and its implementation process is illustrated with reference to an example.
Coloud coding implementation process includes following steps：
Step one, selection needs the information flow inputted in the information flow encoded, the present embodiment to be two network linkings respectively
Address：http://cli.im/6pOaA and http://cli.im/TM3bL .Then the two network address are sequentially input general
QR code coders, generate the common black and white Quick Response Code of two width, as depicted in figs. 1 and 2.
Step 2, chooses the larger color of several RGB vectors spacing as coding candidate color, and assign every kind of face respectively
One numbering of color is such as：Red=1, yellow=2, blue=3, green=4, blue or green=5, purple=6.
Step 3, distinguishes the code element of 2 width black and white Quick Response Codes of scanning strip coding successively, as shown in Fig. 31, extracts identical
The code value of each code element on grid position, and 2 binary values are constituted by the ordering of black and white Quick Response Code, such as 2 institute in Fig. 3
Show.
Step 4, generates the blank Quick Response Code grid of one and black and white Quick Response Code same mesh number, then in each grid position
Put 2 binary values constituted according to the corresponding code value of 2 width black and white Quick Response Codes and insert candidate color, its color mapping relations is：
(00)2=(0)10- white, (01)2=(1)10- red, (10)2=(2)10- yellow, (11)2=(3)10- black, is generated
Color 2 D code is as shown in Fig. 33.
Colour decoding implementation process of the present invention is cataloged procedure（Fig. 3）Inverse process, specifically include following steps：
Step one, color 2 D code is read with Versatile two-dimension code reading terminals, and with general Quick Response Code localization method pair
Color 2 D code is positioned and mesh generation；
Step 2, the Quick Response Code code element to gridding is scanned one by one, extracts the rgb value of each code element image, according to
According to Euler's Distance Judgment code element color between the RGB vectors and pre-selection encoded colors RGB vectors；
Step 3, the encoded colors number of statistics color 2 D code is white, black, red, yellow 4 kinds of colors, then by each code element face
The corresponding sequence number of color is converted to log24=2 bits, specific conversion method is as follows：
If it is white 1. to detect the encoded colors of certain grid（Or black）, then the mesh color be converted to binary value and be
02 bits, i.e. (00)2；
If the encoded colors for 2. detecting certain grid are black（Or white）, then it is 4- that the mesh color, which is converted to the decimal system,
1=3 2 bits, i.e. (3)10=>(11)2；
3. in addition to both the above situation, then corresponding sequence is searched in pre-set color table according to detected code element color
Number, it is converted into log2M-bit binary number, even detects red, is tabled look-up to obtain its serial number 1 according to step 2, corresponding
Dibit is (01)2If detecting yellow, its serial number 2 of tabling look-up to obtain, corresponding dibit is (10)2。
Then step 4, the blank Quick Response Code of 2 width of generation and colour code same mesh number reads in color 2 D code one by one
2 bits on each grid position, and log is assigned successively by the binary value of each in binary number2M blank two
Dimension code-phase is answered in grid, inserts black-white colors finally according to the binary value in grid, scanning all code elements with this can then obtain
To 2 common black and white Quick Response Codes.
Step 5, the common black and white Quick Response Code that decoding is obtained sequentially inputs two-dimensional code decoder, you can finally solve it
In raw information flow data.
Claims (5)
1. a kind of color 2 D code decoding method for carrying several black and white Quick Response Codes, it is characterised in that：It includes colored volume
Code method and colour decoding method, the color coding approach are not to carry out multilevel code to extend Quick Response Code for information flow
Information capacity, but the grouping of bits of several common black and white Quick Response Code same grid locations is encoded, so as to realize use
One secondary color 2 D code carries the function of several black and white Quick Response Codes simultaneously；
The color coding approach comprises the following steps：
（1）A variety of encoded colors are selected according to RGB color vector spacing size, and assign each color one arrangement sequence number；
（2）The common black and white Quick Response Code of generation K width, and being sorted as needed；
（3）Scan the code element of all black and white Quick Response Codes successively respectively, extract the code value of each code element in same grid locations, and by black
The ordering of white Quick Response Code constitutes a K binary values；Generate the blank two of one and black and white Quick Response Code same mesh number
Code grid is tieed up, the K positions binary value then constituted in each grid position according to the corresponding code value of K width black and white Quick Response Codes inserts candidate's face
Color；The rule more than, all grids that blank Quick Response Code is scanned successively select corresponding Fill Color；
If binary number is 0, white or black is selected as the color of colour code correspondence code element, if each of binary number is
1, then the black or white color as colour code correspondence code element is selected, the pre-selection face of K bits correspondence sequence number is otherwise chosen
Color scans all code elements and then generates a secondary color 2 D code in this approach as the encoded colors of color 2 D code respective symbol；
The colour decoding method comprises the following steps：
（1）Color 2 D code is read with Versatile two-dimension code reading terminals, and with general Quick Response Code localization method to color 2 D
Code is positioned and mesh generation；
（2）Quick Response Code code element to gridding is scanned one by one, the RGB vectors of each code element image is extracted, according to the RGB
Euler's Distance Judgment code element color between vector and pre-selection encoded colors RGB vectors；
（3）The encoded colors number M of color 2 D code is counted, and the corresponding sequence number of each code element color is converted into log2M binary systems
Number；
（4）Generate log2The blank Quick Response Code of M width and colour code same mesh number, then reads each net in color 2 D code one by one
The log that case is put2M-bit binary number, and log is assigned successively by the binary value of each in binary number2M blank two
Dimension code-phase is answered in grid, inserts black-white colors finally according to the binary value in grid, scanning all code elements with this can then obtain
To log2M common black and white Quick Response Codes.
2. a kind of color 2 D code decoding method for carrying several black and white Quick Response Codes according to claim 1, it is special
Levy and be：For the binary coding method of the adopting international standards of coding of original information stream, coloud coding is to standard
The secondary coding of black and white Quick Response Code.
3. a kind of color 2 D code decoding method for carrying several black and white Quick Response Codes according to claim 1, it is special
Levy and be：The view finding figure of the color 2 D code generated and the color in functional module area are identical with black and white Quick Response Code.
4. a kind of color 2 D code decoding method for carrying several black and white Quick Response Codes according to claim 1, it is special
Levy and be：Its target decoded is decomposition of the colour code to multiple black and white Quick Response Codes, rather than the decoding to information flow, Quick Response Code
In black and white two-dimensional code decoder/method of information flow available standards for containing understood.
5. a kind of color 2 D code decoding method for carrying several black and white Quick Response Codes according to claim 1, it is special
Levy and be：Color 2 D code can be positioned and gridding by general black and white two-dimensional code decoder/method.
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| CN106022430B (en) * | 2016-05-18 | 2022-01-07 | 北京鼎九信息工程研究院有限公司 | Method and device for generating, recognizing and reading synthetic color two-dimensional graph code |
| CN106203571A (en) * | 2016-07-11 | 2016-12-07 | 搜油郎成都科技有限公司 | Image production method based on Quick Response Code and recognition methods and realize system |
| CN106485305A (en) * | 2016-09-07 | 2017-03-08 | 西北工业大学 | A kind of implementation method of color 2 D code |
| CN106778997A (en) * | 2016-11-28 | 2017-05-31 | 北京慧眼智行科技有限公司 | The generation method and device of a kind of two-dimensional strip code character |
| ES2616146B2 (en) * | 2016-12-20 | 2018-04-27 | Universitat D'alacant / Universidad De Alicante | METHOD OF DETECTION AND RECOGNITION OF LONG REACH AND HIGH DENSITY VISUAL MARKERS |
| CN109214486B (en) * | 2017-06-29 | 2022-04-26 | 中国电信股份有限公司 | Three-dimensional code, three-dimensional code generation method and device, and three-dimensional code identification method and device |
| CN109784451B (en) * | 2017-11-13 | 2022-03-18 | 卓望数码技术（深圳）有限公司 | Method and device for expanding two-dimensional code coding capacity by using multiple colors |
| CN108416405B (en) * | 2018-03-12 | 2021-07-13 | 北京知道创宇信息技术股份有限公司 | Two-dimensional code verification method and system |
| CN108985128A (en) * | 2018-07-06 | 2018-12-11 | 刘崇森 | The methods, devices and systems of color code identification |
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