CN109919277A - Encryption color triangle code decoding method for commodity outer packing - Google Patents
Encryption color triangle code decoding method for commodity outer packing Download PDFInfo
- Publication number
- CN109919277A CN109919277A CN201910073943.XA CN201910073943A CN109919277A CN 109919277 A CN109919277 A CN 109919277A CN 201910073943 A CN201910073943 A CN 201910073943A CN 109919277 A CN109919277 A CN 109919277A
- Authority
- CN
- China
- Prior art keywords
- matrix
- data
- color
- triangle
- coding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Facsimile Transmission Control (AREA)
- Storage Device Security (AREA)
Abstract
The present invention relates to the package anti-fakes of the commodity production field of circulation to trace decoding method.A kind of encryption color triangle code decoding method applied to commodity outer packing, this method is by being divided into a for big triangle2A small triangle, then each small equilateral triangle is divided into trisection, waiting the three pieces of regions separated to fill three color lumps respectively, (example black is { 0 by the color vector of three color lumps, 0,0 }), an original matrix Cn, while the selection matrix M1 generated by computer random is collectively formed, scrambled matrix M2, initial matrix S, transition matrix G terminate matrix E, information needed is encoded by certain algorithm, decoding process is the inverse process of coding.On the one hand capacity that this method gives item one unique ID, improves coding, still further aspect improve encoding and decoding recovery rate of the true form in different broken rings, are conducive to the anti-fake of commodity and retrospect in the case where message part breaks ring.
Description
Technical field
The present invention relates to the circulation anti-fake traceability system field of merchandise news, in particular to commodity in a kind of anti-fake traceability system
The information collection of outer packing, the data processing of information coding, decoding process, refer specifically to be a kind of encryption for commodity outer packing
Color triangle code decoding method.
Technical background
With the continuous fast development of commercialization, the current intelligence of commodity is got in the continuous expansion of scope of the enterprise
More it is valued by people, but following problem also gradually highlights, part dealer copies commodity, commodity
Occur falsifying in the circulation process, commodity mark, which destroys, can not restore etc., this all has brought tremendous economic losses to enterprise.
Therefore, one that the anti-fake and retrospect ability of commodity in the circulation process is information-package engineering research how is improved
One of important directions.In commodity circulation, most of anti-counterfeit packages using RFID less radio-frequency identification technology, because of it
It reads the performances such as convenient, recognition speed is fast and is well received by the public.But RFID depends on the label being affixed in commodity outer packing, vulnerable to
Artificial destruction and random disruptions in transit, the identity information mark cost for the product that commonly disappear fastly are excessively high.Barcode technology is
One to grow up in computer technology and Information Technology Foundation collects coding, printing, identification, data acquisition and processing (DAP) in one
The technology of body.Bar code, which is mainly divided, bar code and two-dimensional bar code.Bar code is usually expressing information in one direction, and
Any information, alignment of certain height typically to easy to read device are not expressed then in vertical direction.And two-dimensional bar code
It is with certain specific rule in the chequered with black and white graphic recording data symbol information of plane distribution, it is horizontal and vertical
The two-dimensional space in direction stores information.
These traditional decoding methods can complete the task of carrying merchandise news.But some in these methods at
This is high, some decoding methods are fixed, and is easy to be forged, can recovery extent it is not high so that commodity encoding and decoding anti-fake and chasing after
Function of tracing back is affected.Therefore how to control cost, improve encoding and decoding recovery under the premise of packaged information is by partial destruction
Rate becomes one of the problem of domestic and foreign scholars' extensive concern.
Summary of the invention
The object of the present invention is to provide a kind of resilient decoding methods of anti-fake retrospect for commodity outer packing.It is right
Merchandise news is encoded, and one unique ID of commodity is assigned, and improves the capacity of coding, improves the merchandise news after coding is destroyed
Recovery rate.
In order to achieve the above object, encoding and decoding technique scheme of the invention is summarized are as follows: by the way that big triangle is divided into a2It is a
Small triangle, then each small equilateral triangle is divided into trisection, wait the three pieces of regions separated to fill three color lumps respectively by three
The color vector (example black is { 0,0,0 }) of a color lump, is collectively formed an original matrix Cn, while raw by computer random
At selection matrix M1, scrambled matrix M2, initial matrix S, transition matrix G, terminate matrix E, by certain algorithm to required
Information is encoded；Decoding process is the inverse process of cataloged procedure.
The technical solution adopted by the present invention is that:
A kind of encryption color triangle code decoding method for commodity outer packing, it is characterised in that: including following
Step:
One, cataloged procedure:
1) shopping saving system (conventional steps):
Merchandise news is acquired, each information segment and 4 binary codes are corresponded, step 3) is supplied to.This 4 two
Ary codes are known as data bit.
2) random information is generated
This field routine random method is used to generate 3*3 at random and each is the initial matrix of a bit
S, transition matrix G terminate matrix E, are supplied to step 4).
This field routine random method is used to generate 3*3 at random and each is the selection matrix of a bit
M1 and scrambled matrix M2, is supplied to step 5).
3) data matrix is generated
Data matrix An needed for the corresponding binary code of merchandise news is generated coding by data matrix create-rule,
It is supplied to step 5).
The data matrix create-rule refers to, generates a 3*3 and each is all 1 binary matrix, accordingly
4 data bit of filling, 2 data bit information of two data matrix of 1 bit parity check position and front and back.Then every four figures evidence
The data matrix An of a 3*3 can be generated in position.
4) coding orders are determined
Start code position is determined by the initial matrix S, the transition matrix G is true to the order for terminating matrix E
It is set to coding orders, is used for step 6).
5) data encryption is carried out
The data matrix An of step 3) is carried out at different encryptions from the scrambled matrix M2 of step 2) by encipherment scheme
Reason exports scrambled matrix Bn, is supplied to step 6),
Encryption process specifically:
Cryptographic calculation is carried out between encipherment scheme specific instruction data matrix An and scrambled matrix M2 exports intermediary matrix Bn,
Operation 0 be exclusive or encryption method, operation 1 be exclusive or non-exclusive encryption method, this two kinds of encryption methods be all common encipherment scheme (
Other encipherment schemes can be used to be encrypted).
Enabling n=9k+b, k and b in data matrix An is positive integer, a number of the b between 1-9.Enable selection matrix M1
In 9 data be respectively M11-M19.Since known two kinds of cryptographic calculations are respectively operation 0 and operation 1, enable data matrix An with
Operation M1b is carried out between scrambled matrix M2, exports intermediary matrix Bn.
6) color triangle code (the crucial innovative step of the present invention) is generated
The color triangle code finally sprayed is generated by color code create-rule, and is sprayed in outer packing；
The color code create-rule, which refers to, provides a big equilateral triangle, it is divided into contour a row, by line n
Region is divided into the equal small equilateral triangle of 2n-1 side length, then the small equilateral triangle got shares a2It is a, then will be each
Small equilateral triangle is divided into three pieces, one color lump of every piece of area filling.Since each rgb value size is 0 to 255, when coding,
Make its rgb value 255 if required encoded radio is 1, its rgb value 0 is made if required encoded radio is 0, then each color lump possesses
Three rgb values form a color vector Xn { Xn1, Xn2, Xn3 }T, original by one finally in a small equilateral triangle
Matrix C n constitutes three color vectors { Xn, Xn+1, Xn+2 } of 3 color lumps.Three small triangles of apex are respectively filled in starting
Matrix S, transition matrix G and end matrix E are generated colored by intermediary matrix by coding orders sequence filling original matrix Cn
Three corner braces.
Two, decoding process:
During commodity circulation, when coding is interfered, data recovery, reduction merchandise news are carried out by coding/decoding method.
1) reduction obtains original matrix
Original matrix Cn is restored by image recognition technology, is supplied to step 2) .3) .4)；
Restoring method refers specifically to:
The color vector Xn of each color lump is obtained, by image recognition technology in order to guarantee that accuracy will wherein be greater than 128
Rgb value be defined as 1, be otherwise 0, pass through three color lumps of identification and obtain original matrix Cn.
2) decoding order is determined
The original matrix Cn that the big triangle triangle obtained by step 1) obtains, respectively with initial matrix S, transition matrix
G, terminate matrix E and carry out control to obtain corresponding decoding order, decoding order is supplied to step 5).
3) non-damage scheme
If decoded original matrix Cn needed for it was found that is not destroyed, pass through step 3)~6 in cataloged procedure) coding
Inverse process obtain data matrix An, to obtain corresponding data bit, be supplied to step 5).
4) scheme is damaged
If decoded original matrix needed for it was found that is destroyed, pass through step 3)~5 in cataloged procedure) inverse process of coding
The last data matrix A n-1 and latter data matrix A n+1 of data matrix An is obtained, rear two compositions phase of two matrixes is read
The data bit answered, is supplied to step 5).
5) merchandise news is obtained
By step 3) or 4) data bit obtained in finally obtains corresponding commodity with the decoding order obtained in step 2)
Information.
As the above scheme is adopted, commodity outer packing decoding method proposed by the invention, which is gathered around, has the following advantages: by
In used color lump rgb value complete information storage, improve coding in information storage capacity, due to by computer with
Machine generates scrambled matrix, and has two sets of cryptographic calculation schemes, to increase the difficulty for cracking coding, improve coding can
It improves coding due to storing the partial data position information of front and back data matrix in data matrix by property and anti-counterfeiting performance and is broken
Merchandise news recovery rate after bad.
Detailed description of the invention
Become better understanding, thus many of the invention by referring to and in conjunction with detailed description in attached drawing, the present invention
Advantage is readily apparent to.
Fig. 1 is this method encoding and decoding flow chart.
Fig. 2 is color triangle code product process figure.
Fig. 3 is the color triangle code for being not filled by color.
Fig. 4 is the small equilateral triangle schematic diagram comprising original matrix Cn.
Fig. 5 is coding orders schematic diagram.
Fig. 6 is the color triangle code schematic diagram that coding is completed.
Fig. 7 is to have damaged color triangle code schematic diagram.
Specific embodiment
Below in conjunction with example shown in attached drawing, the present invention is described further.
The present invention proposes a kind of encryption color triangle code decoding method for commodity outer packing, the key step of method
It is as follows:
As shown in Fig. 1 it is the coding flow chart and decoding process figure of this method, is combined below according to this flow chart
One example specifically explains to each step.
One, information coding is carried out
1) shopping saving system
The information sprayed required for commodity outer packing in this example has:
Production line serial number 208, product features code 6666, date of manufacture 180101
Every decimal number is corresponded as tetrad, 13 groups of 4 data bit, such as production line serial number are obtained
208 correspond to 0010,0000,0100.
2) random information is generated
Selection matrix M1 and scrambled matrix M2 is generated by computer random, is supplied to step 5.
Initial matrix S, transition matrix G are generated by computer random, terminates matrix E, is supplied to step 4.
Matrix generated in this example are as follows:
3) data matrix is generated
1) resulting 13 groups of 4 binary codings are respectively filled in first 4 of 3*3 matrix, the 5th is parity check bit,
Latter two of data bit in 6th, 7 preceding the matrix of filling, the 8th, 9 insert after in matrix the front two of data bit finally constitute one
A data matrix A n, is supplied to step 4, if this matrix is A1, latter two of data bit in 6,7 filling data matrix A13,
Similarly, if this data matrix is A13, the front two of data bit in 6,7 filling data matrix A1.Then have available 13 altogether
1~A13 of a data matrix A.Partial data matrix are as follows:
4) coding orders are determined
By initial matrix S, start code position is determined, transition matrix G is determined as encoding to the order for terminating matrix E
Order, coding orders will be used for step 6
5) data encryption is carried out
Enabling n=9k+b, k and b in data matrix An is positive integer, a number of the b between 1-9.Enable selection matrix M1
In 9 data be respectively M11-M19.Two kinds of operations relevant to scrambled matrix M2 are defined by the user, one kind being named as operation 0,
One kind being named as operation 1, and the input and output of operation correspond.It enables and carries out operation between data matrix An and scrambled matrix M2
M1b exports intermediary matrix Bn.Corresponding 9 digits with scrambled matrix M2 of 9 data that operation 1 is data matrix An in this example
According to XOR operation is done, operation 0 is that corresponding 9 data with scrambled matrix M2 of 9 data of data matrix An do exclusive or non-exclusive fortune
It calculates.By taking data matrix A13 as an example, 13=9*1+4 then carries out operation 0, final to obtain intermediary matrix B13, and part intermediary matrix is
6) color triangle code is generated
The product process figure of color triangle code is specifically shown in attached drawing 2.
As shown in Fig. 3, since one shares 13 groups of 4 data bit, then a big equilateral triangle is provided, it is divided into
Line n region is divided into the equal small equilateral triangle of 2n-1 side length, the then small equilateral triangle got by 4 contour rows
Share 42It is a, then each small equilateral triangle is divided into three pieces, one color lump of every piece of area filling.Each color lump possesses one
Rgb value forms a color vector Xn { Xn1, Xn2, Xn3 }T, since each rgb value size is 0 to 255, when coding, such as institute
Needing encoded radio to be 1 makes its rgb value 255, its rgb value 0 is made if required encoded radio is 0, then there are three each color lump is gathered around
Rgb value forms a color vector Xn { Xn1, Xn2, Xn3 }T, finally in a small equilateral triangle, by an original matrix
Cn constitutes three color vectors { Xn, Xn+1, Xn+2 } of 3 color lumps.It is respectively filled in color lump under left and right as shown in Fig. 4 black
Red white three kinds of colors then represent original matrix
As shown in Fig. 5, the original matrix at three vertex triangles of big equilateral triangle is respectively filled in starting square
Battle array S, transition matrix G, terminate matrix E, and the original matrix defined at the vertex triangle of initial matrix is C1, by transition matrix
The order of triangle to the triangle for terminating matrix is correct encoding and decoding order, is encoded from top to bottom by this order,
Intermediary matrix Bn is inserted into original matrix Cn in order, the original matrix of other matrixes has been inserted in tripping when filling
C1, C10, C16, such as by the lower three pieces of colors in left and right of B1 filling C2 then this triangle be respectively the black powder of powder.
Corresponding encoding tasks are completed, final coding situation is as shown in Fig. 6.
Two, information decoding is carried out
1) reduction obtains original matrix
The color vector Xn of each color lump is obtained, by image recognition technology in order to guarantee that accuracy will wherein be greater than 128
Rgb value be defined as 1, be otherwise 0, pass through three color lumps of identification and obtain original matrix Cn.
2) decoding order is determined
By the original matrix C1, C10, C16 that obtain in step 1 respectively with initial matrix S, transition matrix G, terminate matrix E
Control is carried out to obtain corresponding decoding order.
3) non-damage scheme
If data do not wreck, data matrix An is obtained by step 3~5 codings inverse process, to obtain phase
The data bit answered.
4) scheme is damaged
If data wreck, the last data matrix of data matrix An is obtained by step 3~5 codings inverse process
An-1 and latter data matrix A n+1 obtains corresponding data bit.As shown in Fig. 7, the small equilateral triangle of original matrix C2 is represented
Shape is destroyed, then obtains C3 and C16 by image recognition technology and take 6,7 in 8,9 in C16 and C3, logical
It crosses step 3~5 codings inverse process and obtains 4 data bit.
5) merchandise news is obtained
By every four figures according to position acquisition relevant information corresponding with database, related letter is arranged with correct decoding order sequence
Breath, finally obtains merchandise news.
Claims (1)
1. a kind of encryption color triangle code decoding method for commodity outer packing, it is characterised in that: including following step
It is rapid:
One, cataloged procedure:
1) shopping saving system:
Merchandise news is acquired, each information segment and 4 binary codes are corresponded, step 3) is supplied to.This 4 binary systems
Code is known as data bit；
2) random information is generated
This field routine random method is used to generate 3*3 at random and each is the initial matrix S of a bit, mistake
Matrix G is crossed, terminates matrix E, is supplied to step 4)；
This field routine random method is used to generate 3*3 at random and each is the selection matrix M1 of a bit,
And scrambled matrix M2, it is supplied to step 5)；
3) data matrix is generated
Data matrix An needed for the corresponding binary code of merchandise news is generated coding by data matrix create-rule, provides
To step 5)；
The data matrix create-rule refers to, generates a 3*3 and each is all 1 binary matrix, fill out accordingly
Enter 4 data bit, 2 data bit information of two data matrix of 1 bit parity check position and front and back.Then every four figures can according to position
To generate the data matrix An of a 3*3；
4) coding orders are determined
Start code position is determined by the initial matrix S, and the transition matrix G is determined as to the order for terminating matrix E
Coding orders are used for step 6)；
5) data encryption is carried out
The data matrix An of step 3) is subjected to different encryptions from the scrambled matrix M2 of step 2) by encipherment scheme, it is defeated
Scrambled matrix Bn out is supplied to step 6),
Encryption process specifically:
Cryptographic calculation is carried out between encipherment scheme specific instruction data matrix An and scrambled matrix M2 exports intermediary matrix Bn, operation
0 is exclusive or encryption method, and operation 1 is exclusive or non-exclusive encryption method；
6) color triangle code is generated
The color triangle code finally sprayed is generated by color code create-rule, and is sprayed in outer packing；
The color code create-rule, which refers to, provides a big equilateral triangle, it is divided into contour a row, by line n region
It is divided into the equal small equilateral triangle of 2n-1 side length, then the small equilateral triangle got shares a2It is a, then will be each small etc.
Side triangle is divided into three pieces, one color lump of every piece of area filling.Since each rgb value size is 0 to 255, when coding, such as institute
Needing encoded radio to be 1 makes its rgb value 255, its rgb value 0 is made if required encoded radio is 0, then there are three each color lump is gathered around
Rgb value forms a color vector Xn { Xn1, Xn2, Xn3 }T, finally in a small equilateral triangle, by an original matrix
Cn constitutes three color vectors { Xn, Xn+1, Xn+2 } of 3 color lumps.Three small triangles of apex are respectively filled in initial matrix
S, transition matrix G and end matrix E generates color triangle by intermediary matrix by coding orders sequence filling original matrix Cn
Code；
Two, decoding process:
During commodity circulation, when coding is interfered, data recovery, reduction merchandise news are carried out by coding/decoding method；
1) reduction obtains original matrix
Original matrix Cn is restored by image recognition technology, is supplied to step 2) .3) .4)；
Restoring method refers specifically to:
The color vector Xn of each color lump is obtained, by image recognition technology in order to guarantee accuracy by the RGB wherein greater than 128
Value is defined as 1, is otherwise 0, obtains original matrix Cn by three color lumps of identification.
2) decoding order is determined
The original matrix Cn that the big triangle triangle obtained by step 1) obtains, respectively with initial matrix S, transition matrix G, knot
Beam matrix E carries out control to obtain corresponding decoding order, and decoding order is supplied to step 5)；
3) non-damage scheme
If decoded original matrix Cn needed for it was found that is not destroyed, pass through step 3)~6 in cataloged procedure) coding it is inverse
Process obtains data matrix An, to obtain corresponding data bit, is supplied to step 5)；
4) scheme is damaged
If it was found that needed for decoded original matrix be destroyed, pass through step 3)~5 in cataloged procedure) encode inverse process obtain
The last data matrix A n-1 and latter data matrix A n+1 of data matrix An, latter two for reading two matrixes are constituted accordingly
Data bit is supplied to step 5)；
5) merchandise news is obtained
By step 3) or 4) data bit obtained in finally obtains corresponding commodity letter with the decoding order obtained in step 2)
Breath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910073943.XA CN109919277B (en) | 2019-01-25 | 2019-01-25 | Enciphered colour triangular code coding and decoding method for commodity external package |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910073943.XA CN109919277B (en) | 2019-01-25 | 2019-01-25 | Enciphered colour triangular code coding and decoding method for commodity external package |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109919277A true CN109919277A (en) | 2019-06-21 |
| CN109919277B CN109919277B (en) | 2021-04-30 |
Family
ID=66960815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910073943.XA Active CN109919277B (en) | 2019-01-25 | 2019-01-25 | Enciphered colour triangular code coding and decoding method for commodity external package |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109919277B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113610202A (en) * | 2021-08-10 | 2021-11-05 | 上海应用技术大学 | Graphic encoding and decoding method and device applied to commodity external package |
| CN113919383A (en) * | 2021-09-09 | 2022-01-11 | 同济大学 | Hexagonal information coding and decoding method for commodity outer package |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102609677A (en) * | 2011-01-21 | 2012-07-25 | 北京数字指通软件技术有限公司 | Biological characteristic cryptographic system based on fingerprint and error correcting code |
| CN103632179A (en) * | 2012-08-22 | 2014-03-12 | 上海育郡信息科技有限公司 | Three-dimensional bar code encoding and decoding method and device |
| CN107086913A (en) * | 2017-04-14 | 2017-08-22 | 中国民航大学 | A kind of color 2 D code encipher-decipher method under high-dimension chaotic system |
| US20180096495A1 (en) * | 2016-10-05 | 2018-04-05 | HypeVR | Geometry sequence encoder and decoder |
| CN109190736A (en) * | 2018-08-02 | 2019-01-11 | 北京三友恒瑞科技有限公司 | Anti-fake two-dimension code and its generation method and generation application system |
| CN109242510A (en) * | 2018-08-21 | 2019-01-18 | 同济大学 | A kind of graphical information decoding method for commodity outer packing |
-
2019
- 2019-01-25 CN CN201910073943.XA patent/CN109919277B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102609677A (en) * | 2011-01-21 | 2012-07-25 | 北京数字指通软件技术有限公司 | Biological characteristic cryptographic system based on fingerprint and error correcting code |
| CN103632179A (en) * | 2012-08-22 | 2014-03-12 | 上海育郡信息科技有限公司 | Three-dimensional bar code encoding and decoding method and device |
| US20180096495A1 (en) * | 2016-10-05 | 2018-04-05 | HypeVR | Geometry sequence encoder and decoder |
| CN107086913A (en) * | 2017-04-14 | 2017-08-22 | 中国民航大学 | A kind of color 2 D code encipher-decipher method under high-dimension chaotic system |
| CN109190736A (en) * | 2018-08-02 | 2019-01-11 | 北京三友恒瑞科技有限公司 | Anti-fake two-dimension code and its generation method and generation application system |
| CN109242510A (en) * | 2018-08-21 | 2019-01-18 | 同济大学 | A kind of graphical information decoding method for commodity outer packing |
Non-Patent Citations (1)
| Title |
|---|
| 杨宏宇，王在明: "基于SHA-256和DNA序列的彩色二维码混沌加密方法", 《大连理工大学学报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113610202A (en) * | 2021-08-10 | 2021-11-05 | 上海应用技术大学 | Graphic encoding and decoding method and device applied to commodity external package |
| CN113610202B (en) * | 2021-08-10 | 2023-08-08 | 上海应用技术大学 | Graphic encoding and decoding method and device applied to commodity outer package |
| CN113919383A (en) * | 2021-09-09 | 2022-01-11 | 同济大学 | Hexagonal information coding and decoding method for commodity outer package |
| CN113919383B (en) * | 2021-09-09 | 2023-08-04 | 同济大学 | Hexagonal information encoding and decoding method for commodity outer package |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109919277B (en) | 2021-04-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105447546B (en) | The two dimensional code and its coding and decoding methods and equipment of embeddable large scale figure | |
| CN104794619B (en) | Anti-channel conflict digital information mapping code method for commodity packaging | |
| CN103632179B (en) | Code And Decode method and the device of Three-Dimensional Bar Code | |
| CN101086761A (en) | Efficient information lattice image and its generation and decoding method | |
| CN113194213B (en) | PNG image information hiding and recovering method based on secret sharing and chaotic mapping | |
| CN109919277A (en) | Encryption color triangle code decoding method for commodity outer packing | |
| CN102800243A (en) | Anti-counterfeiting annular code and encoding method thereof | |
| CN105099712A (en) | Data encryption method based on double-code verification | |
| CN107944527A (en) | A kind of encryption of anti-fake two-dimension code and coding/decoding method | |
| CN102663668B (en) | Digital watermarking system based on continuous vector graphics and implementation method of digital watermarking system based on continuous vector graphics | |
| CN106408065A (en) | Two-dimensional code encoding method and apparatus | |
| CN103778453B (en) | Writable two-dimensional bar code based on fault-tolerant mechanism and generating method thereof | |
| CN104376307B (en) | A kind of information in fingerprint coding method | |
| CN109344940B (en) | Three-dimensional lattice projection graph coding and decoding method for commodity outer package | |
| CN103927572A (en) | Encoding graph block and method and device for forming lattice graph through encoding graph block | |
| CN104573781A (en) | Encoding and decoding method of two-dimensional code | |
| CN115664639B (en) | Financial asset transaction data transmission encryption method | |
| CN109242510A (en) | A kind of graphical information decoding method for commodity outer packing | |
| CN113919384B (en) | Encryption gray-scale image coding and decoding method for commodity outer package | |
| CN113988242A (en) | Multi-region-based anti-counterfeiting code generation and verification method, system, equipment and medium | |
| CN113919383B (en) | Hexagonal information encoding and decoding method for commodity outer package | |
| CN115511687A (en) | Encryption RGB value coding and decoding method for commodity external package | |
| CN110084349A (en) | A kind of method for drafting and geometry pixel two dimensional code of two dimensional code pixel | |
| CN104766217A (en) | Commodity information coding method and commodity information decoding method used in interference process | |
| CN109242509A (en) | Dot character information encoding-decoding method for commodity outer packing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |