CN109858931B - Double-sided composite information matrix coding and decoding method for commodity outer package - Google Patents
Double-sided composite information matrix coding and decoding method for commodity outer package Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
A double-sided composite information matrix coding and decoding method for commodity external packing belongs to the anti-counterfeiting anti-channel conflict and commodity tracing technology. And the discrete composite information matrix which is correlated with each other is used as the unique identity information of the unit commodity, and the composite information matrix is composed of a basic information matrix and a gray level information matrix and is respectively printed on two surfaces of the outer package of the commodity. The basic information matrix comprises information bits capable of identifying the unit commodity and check bits used for basic error correction, and the gray scale information matrix is generated through the relationship between each matrix unit in the basic information matrix and the upper, lower, left and right dimensions of the matrix unit. When commodity packaging is partially damaged in logistics transportation, a high matrix information recovery rate is obtained through a reverse decoding algorithm based on a composite information matrix. Meanwhile, the coding structure is expanded and adjusted according to the number of commodities, good balance is achieved between coding complexity and matrix information recovery rate, and the method is suitable for product anti-counterfeiting and commodity tracing of fast consumer goods with low cost and huge sales volume.
Description
Technical Field
The invention relates to the field of anti-counterfeiting and anti-channel conflict merchandise and merchandise tracing systems for circulation merchandise, in particular to a data processing process of information composite coding and composite decoding of merchandise outer packaging in the anti-channel conflict merchandise tracing system, and specifically relates to a double-sided composite information matrix coding and decoding method for the merchandise outer packaging.
Technical Field
Fast consumer goods (FMCG) refers to products that consumers consume fast and buy repeatedly, which are mostly daily necessities, and thus they rely on high frequency consumption of consumers and make profits through the market scale. Economic globalization makes the business environment increasingly complex, with the conscious pernicious sales, i.e., pernicious fleets, made by dealers across the sales area covered by the dealers themselves. For the fast consumer goods industry, the malignant channel conflict phenomenon seriously damages the benefits of manufacturers and disturbs the market law, so that the commodity channel conflict prevention tracing system is more and more concerned by the society.
The existing widely-applied anti-channel conflict codes are all based on label coding modes, including two-dimensional code technology, laser anti-counterfeiting, ink anti-counterfeiting and the like, but all of the anti-channel conflict codes have the defects of easiness in damage and difficulty in recovery. Radio frequency identification technology is not suitable for the fast moving consumer goods industry due to high cost. At present, an anti-counterfeiting method based on discretized matrix information is gradually proposed, but the performance and the universality of the anti-counterfeiting method are worthy of further optimization research.
Disclosure of Invention
The invention aims to provide a double-sided composite information matrix coding and decoding method for commodity outer packaging, which can realize good balance between coding complexity and matrix information recovery rate and is suitable for product anti-counterfeiting and commodity tracing of fast consumer products with low cost and huge sales volume.
In order to achieve the above purposes, the invention adopts the technical scheme that:
a double-sided composite information matrix coding and decoding method for commodity outer package is characterized by comprising the following steps:
1. coding
1) Generation of an infrastructure information structure
Acquiring and extracting the unique identity information of the commodity, and generating a unique binary identity information identification code by a computer according to a standard basic information structure;
the standard basic information structure is 24-bit binary codes and comprises 12-bit commodity characteristic information codes used for indicating commodity characteristics and 12-bit commodity assembly line stacking codes associated with production dates and assembly line serial numbers;
2) Coding of a basic information matrix
Adding check bits to the unique binary identity information identification code in the step 1), and matrixing the expanded coding sequence to form a basic information matrix, wherein the coded basic information matrix is associated with the commodity information and forms a one-to-one correspondence relationship;
a check digit added to the unique binary identity information identification code, specifically a 12-digit check digit obtained by the 'same or' operation of the 12-digit commodity characteristic information code and the 12-digit commodity assembly line stacking code;
the matrixing is implemented by serializing 36-bit basic information into 6 rows and 6 columns of matrixes, wherein the matrixing sequence is from top to bottom and from left to right;
3) Extension of the basic information matrix
Expanding rows and columns of the basic information matrix coded in the step 2), wherein the specific expansion mode is that a copied row of the last row is added before the first row, a copied row of the first row is added after the last row, a copied row of the last column is added before the first column, and a copied row of the first column is added after the last column to form a binary expanded basic information matrix;
4) Generation of a gray-scale numerical matrix
Performing quantized gray value calculation on the expanded basic information matrix in the step 3), wherein the quantized gray value of each matrix unit is the sum of the values of binary 0 and 1 of the upper part, the lower part, the left part, the right part and the self five parts of each matrix unit only aiming at each matrix unit of the basic information matrix with the size before expansion, so that a gray value matrix containing all the quantized gray values is formed;
5) Binary information mapping of composite information matrix
The basic information matrix in the step 2) and the gray scale numerical matrix in the step 4) form a composite information matrix, through code spraying equipment, dominant and recessive pattern mapping is carried out on all binary information in the basic information matrix on one surface (surface A) of a commodity package, matrix information with the binary information of 1 maps a black characteristic identification geometric figure with the gray scale value of 0 in a package area, and matrix information with the binary information of 0 is not processed in the package area;
6) Gray scale value mapping of composite information matrix
By code spraying equipment, performing explicit and implicit graphic mapping on all numerical information in a gray numerical matrix on the other side (B side) of a commodity package, mapping a black dot with a gray value of 0 on a package region by matrix information with a numerical information of 5, mapping a black dot with a gray value of 51 on a package region by matrix information with a numerical information of 4, mapping a black dot with a gray value of 102 on a package region by matrix information with a numerical information of 3, mapping a black dot with a gray value of 153 on a package region by matrix information with a numerical information of 2, mapping a black dot with a gray value of 204 on a package region by matrix information with a numerical information of 1, and not processing mapping matrix information with a numerical information of 0 on the package region;
2. decoding
7) Single-sided decoding of composite information matrices
In the commodity circulation process, when the composite information matrix is partially damaged, all damaged matrix units are marked with special marks, and if the basic information matrix is damaged, the primary A-side single-side decoding and data recovery are performed through a check code and a coding mode related to the internal information of the matrix;
8) Double-sided decoding of composite information matrix from A side to B side
Realizing double-sided decoding from the A surface to the B surface according to the information incidence relation between the two surfaces of the composite information matrix through undamaged matrix units in the partially damaged A surface basic information matrix;
the method comprises the following steps of A-side-B-side double-sided decoding, wherein a specific decoding mode is that a partially damaged A-side basic information matrix is subjected to step 3) and step 4) to form a new generation of damaged gray value matrix, matrix units which cannot be uniquely determined by gray value calculation caused by damage of partial matrix units in the process are marked by special marks, and the damaged gray value matrix is subjected to double-sided decoding and data recovery by comparing the damaged gray value matrix with the new generation of damaged gray value matrix;
9) Double-sided decoding of composite information matrix from B to A
Through undamaged matrix units in the partially damaged B-surface gray scale value matrix, double-surface decoding from the B surface to the A surface is realized according to the information incidence relation between the two surfaces of the composite information matrix;
the decoding of the two sides from the B side to the A side is carried out in a specific decoding mode that when the gray value unit matrix is 0, the binary values of the upper, lower, left, right and self of the corresponding unit matrix in the expanded damaged basic information matrix formed by the A side in the step 3) are all 0; when the gray-scale numerical value unit matrix is 5, the gray-scale numerical value unit matrices are all 1; when the gray value unit matrix is 4, as long as one 0 or four 1 in five units, the rest units can be uniquely determined; when the gray scale value unit matrix is 3, the rest units can be uniquely determined as long as two 0 or three 1 in five units are provided; when the gray scale value unit matrix is 2, the rest units can be uniquely determined as long as three 0 or two 1 in five units are provided; when the gray value unit matrix is 1, as long as four 0 or one 1 in five units, the rest units can be uniquely determined;
10 Conditions for decoding iterations and stopping iterations
The decoding process is carried out according to the sequence of the step 7), the step 8) and the step 9) each time, iteration is repeated, after each iteration is finished, the first iteration stopping condition is adopted according to the proportion of damaged matrix units containing special mark marks in the latest generation of damaged composite information matrix, and the settable iteration upper limit times is the second iteration stopping condition.
Compared with the prior art, the invention has the following advantages:
the double-sided composite information matrix coding and decoding method can code tens of millions of commodities, realizes the decoding of single-sided interior and double-sided interior through the relationship of the interior of the double-sided composite information matrix, and finally realizes the recovery of original information when partial damage occurs in the commodity circulation. The matrix coding and decoding method can balance the coding rate and the recovery rate, and can achieve the recovery rate of more than 80 percent when the overall damage rate reaches 70 percent while realizing the low coding rate.
The double-sided composite information matrix coding and decoding method is a coding and decoding scheme which is low in cost, low in coding rate, high in recovery rate and capable of coding commodity information of tens of millions of orders, can recover commodity basic information of a commodity package which is partially damaged in logistics transportation, and is suitable for product anti-counterfeiting and commodity tracing of fast consumer goods which are low in cost and huge in sales.
Drawings
FIG. 1 is a flow chart of an encoding method according to the present invention;
FIG. 2 is a schematic diagram of an extended basic information matrix generation in an embodiment;
FIG. 3 is a schematic diagram of the gray scale matrix generation in an embodiment;
FIG. 4 is a code-spraying mapping chart of a composite information matrix in an embodiment;
FIG. 5 is a second flowchart of the decoding method according to the present invention;
FIG. 6 is a schematic diagram of a first single-sided decoding of a composite information matrix in an embodiment;
FIG. 7 is a schematic diagram of a two-sided decoding of a composite information matrix from A to B for the first time in an embodiment;
FIG. 8 is a schematic diagram of a double-sided decoding of a composite information matrix from B to A side for the first time in an embodiment;
FIG. 9 is a diagram of a second single-sided decoding of a composite information matrix in an example implementation;
FIG. 10 is a schematic diagram of a two-sided decoding of the composite information matrix from A to B for the second time in an embodiment;
fig. 11 is a schematic diagram of a double-sided decoding of the composite information matrix from B to a side for the second time in the embodiment.
Detailed Description
The invention relates to a double-sided composite information matrix coding and decoding method for commodity outer package, which takes a discrete composite information matrix which is correlated with each other as unique identity information of a unit commodity, wherein the composite information matrix is composed of a basic information matrix and a gray information matrix and is respectively printed on two sides of the commodity outer package. The basic information matrix comprises information bits capable of identifying the unit commodity and check bits for basic error correction, and the gray level information matrix is generated through the relationship between each matrix unit in the basic information matrix and the upper, lower, left and right dimensions of the matrix unit. When commodity packaging is partially damaged in logistics transportation, a high matrix information recovery rate is obtained through an inverse decoding algorithm based on a composite information matrix. Meanwhile, the coding structure is expanded and adjusted according to the number of commodities, good balance is achieved between coding complexity and matrix information recovery rate, and the method is suitable for product anti-counterfeiting and commodity tracing of fast consumer goods with low cost and huge sales volume.
The invention is further illustrated by the following figures and examples. The invention mainly comprises two key steps of encoding and decoding:
1. encoding
As shown in fig. 1, the encoding process of the present invention is that the encoding of the double-sided composite information matrix is composed of a basic information matrix and a gray value matrix. The basic information matrix is formed by matrixing a basic information binary coding sequence, the basic information binary coding sequence contains 36-bit binary numbers, wherein the first 24 bits contain commodity basic information. When the basic information of a certain commodity information is '001001010111000101001110', the last 12-bit check digit is obtained by performing exclusive nor operation on '001001010111' and '000101001110', and the final complete binary coding sequence of the basic information is '001001010111000101001110110011100110'.
The binary coded base information sequence is matrixed into a 6 × 6 base information matrix from left to right and from top to bottom, as shown in the middle 6 × 6 information matrix of fig. 2. And then expanding the information matrix, wherein the specific expansion mode is that the first row is added with the last copied row, the last row is added with the copied row of the first row, the first column is added with the last copied row, and the last column is added with the first copied row to form a binary expanded basic information matrix, as shown in fig. 2.
The calculation of the quantized gray values of the expanded basic information matrix is performed, and the quantized gray values of each matrix unit are the sum of the values of binary 0 and 1 of the upper, lower, left, right and self five parts of each matrix unit, such as the hatched part of the cross in fig. 2, only for each matrix unit of the basic information matrix of the size before expansion, so as to form a gray value matrix containing all the quantized gray values, and fig. 3 is a schematic diagram of the generation of the gray value matrix in this example.
As shown in fig. 4, by means of code spraying equipment, dominant and recessive pattern mapping is performed on all binary information in the basic information matrix on one surface (surface a) of a commodity package, matrix information with binary information of 1 maps a black characteristic identification geometric figure with gray value of 0 in a package area, and matrix information with binary information of 0 is not processed in the package area; all numerical information in the gray numerical matrix is subjected to explicit and implicit graphic mapping on the other side (B side) of the commodity package, matrix information with the numerical information of 5 is mapped with a black dot with the gray value of 0 in a package area, matrix information with the numerical information of 4 is mapped with a black dot with the gray value of 51 in the package area, matrix information with the numerical information of 3 is mapped with a black dot with the gray value of 102 in the package area, matrix information with the numerical information of 2 is mapped with a black dot with the gray value of 153 in the package area, matrix information with the numerical information of 1 is mapped with a black dot with the gray value of 204 in the package area, and matrix information with the numerical information of 0 is not subjected to processing in the package area.
2. Decoding
As shown in fig. 5, the decoding process of the present invention includes single-sided decoding, double-sided decoding and iteration. After the matrix cells in the example are randomly destroyed, the destroyed matrix cells are specially marked with "X", and a double-sided information matrix diagram marked after random destruction is given as shown in FIG. 6.
For the basic information matrix of the a-plane, 12-bit information codes of the first two parts are "00XX0XX1XX11" and "0X01XX0XXX10", respectively, and 12-bit check bits are "X1XX1X 01X0", and preliminary a-plane single-side decoding and data recovery can be performed through the exclusive nor operation relationship of corresponding positions, and the recovery result of the damaged matrix unit is shown as the "X" rear bracket in fig. 6.
Through the undamaged matrix units in the partially damaged A-side basic information matrix, the double-side decoding from the A side to the B side can be realized according to the information incidence relation between the two sides of the composite information matrix. As shown in FIG. 7, the unknown "X" in the second row and the first column of the B-surface can be restored to "2" by calculation through the gray part "cross" in the A-surface, the unknown "X" in the sixth row and the fifth column of the B-surface can be restored to "3" by calculation through the shadow part "cross" in the A-surface, and the rest can be analogized according to the above principle, and the restoration result is shown in the parenthesis behind the "X" in FIG. 7.
Through undamaged matrix units in the partially damaged B-surface gray scale value matrix, double-surface decoding from the B surface to the A surface can be realized according to the information incidence relation between the two surfaces of the composite information matrix. The specific decoding mode is that when the gray value unit matrix is 0, the binary values of the upper, lower, left, right and self of the corresponding unit matrix in the expanded damaged basic information matrix formed by the A surface through the step 3) are 0; when the gray-scale numerical value unit matrix is 5, the gray-scale numerical value unit matrices are all 1; when the gray value unit matrix is 4, as long as one 0 or four 1 in five units, the rest units can be uniquely determined; when the gray value unit matrix is 3, as long as two 0 or three 1 in five units, the rest units can be uniquely determined; when the gray scale value unit matrix is 2, the rest units can be uniquely determined as long as three 0 or two 1 in five units are provided; when the gray-scale value cell matrix is 1, as long as there are four 0 s or one 1 in five cells, the remaining cells can be uniquely determined. As shown in fig. 8, the left side of the cross shape of the gray part "cross" that can be recovered by "2" in the first row and column of the B surface is "1", the upper side and the lower side of the cross shape of the shadow part "cross" that can be recovered by "3" in the third row and column of the B surface is "1", and the rest are analogized according to the above principle, and the recovery result is shown by the parenthesis after "X" in fig. 8. In addition, since the expansion rule of the matrix is as shown in fig. 2, the expanded parts can also be mutually restored according to the expansion principle, for example, after the first "1" of the expanded column on the left side of the original 6 × 6 information matrix of the a-plane in fig. 8 is restored, the unknown "X" of the sixth column in the first row of the original matrix is also "1".
The first decoding process of this example is now complete. When the first stop iteration condition is set: the damage ratio threshold n is 0, and the second stop iteration condition: when the iteration upper limit number N is 5, the example does not stop the decoding iteration, and the above single-sided and double-sided decoding process is repeated to enter the second decoding. Fig. 9 to fig. 11 are schematic diagrams of a second decoding process of the composite information matrix in the embodiment of the present invention. As shown in fig. 11, after the second decoding, the basic information of the product is completely recovered.
Claims (1)
1. A double-sided composite information matrix coding and decoding method for commodity outer package is characterized by comprising the following steps:
1. encoding
1) Generation of an infrastructure information structure
Acquiring and extracting the unique identity information of the commodity, and generating a unique binary identity information identification code by a computer according to a standard basic information structure;
the standard basic information structure is 24-bit binary codes, including 12-bit commodity characteristic information codes for indicating commodity characteristics and 12-bit commodity assembly line stacking codes associated with production dates and assembly line serial numbers;
2) Coding of a basic information matrix
Adding check bits to the unique binary identity information identification code in the step 1), and matrixing the expanded coding sequence to form a basic information matrix, wherein the coded basic information matrix is associated with the commodity information and forms a one-to-one correspondence relationship;
a check digit added to the unique binary identity information identification code, specifically a 12-digit check digit obtained by the 'same or' operation of the 12-digit commodity characteristic information code and the 12-digit commodity assembly line stacking code;
the matrix mode is to serialize 36 bits of basic information into 6 rows and 6 columns of matrixes, and the matrix sequence is from left to right and from top to bottom;
3) Extension of the basic information matrix
Expanding rows and columns of the basic information matrix coded in the step 2), wherein the specific expansion mode is that a copied row of a last row is added before a first row, a copied row of the first row is added after the last row, a copied column of the last column is added before the first column, and a copied column of the first column is added after the last column to form a binary expanded basic information matrix;
4) Generation of a gray-scale numerical matrix
Performing calculation of a quantization gray value on the expanded basic information matrix in the step 3), wherein the calculation is only specific to each matrix unit of the basic information matrix before expansion, and the quantization gray value of each matrix unit is the sum of binary numerical values corresponding to five matrix units, namely the upper matrix unit, the lower matrix unit, the left matrix unit, the right matrix unit and the matrix unit, so that a gray value matrix containing all the quantization gray values is formed;
5) Binary information mapping of composite information matrix
Forming a composite information matrix by the basic information matrix in the step 2) and the gray scale numerical value matrix in the step 4), mapping all binary information in the basic information matrix on one surface of a commodity package through code spraying equipment, recording the binary information as an A surface, mapping a black characteristic identification geometric figure with the gray scale value of 0 in a package area by the matrix information with the binary information of 1, and not processing the mapping of the matrix information with the binary information of 0 in the package area;
6) Gray scale numerical mapping of composite information matrices
By code spraying equipment, performing explicit and implicit graphic mapping on all numerical information in a gray numerical matrix on the other side of a commodity package, recording the numerical information as a surface B, mapping a black dot with a gray value of 0 on a package region by matrix information with a numerical information of 5, mapping a black dot with a gray value of 51 on a package region by matrix information with a numerical information of 4, mapping a black dot with a gray value of 102 on a package region by matrix information with a numerical information of 3, mapping a black dot with a gray value of 153 on a package region by matrix information with a numerical information of 2, mapping a black dot with a gray value of 204 on a package region by matrix information with a numerical information of 1, and not processing the mapping of matrix information with a numerical information of 0 on the package region;
2. decoding
7) Single-sided decoding of composite information matrices
In the commodity circulation process, when the composite information matrix is partially damaged, all damaged matrix units are marked with special marks, if the basic information matrix is damaged, the primary A-side single-side decoding and data recovery are carried out through a check bit and a coding mode related to the internal information of the basic information matrix;
8) Double-sided decoding of composite information matrix from A side to B side
Realizing double-sided decoding from the A surface to the B surface according to the information incidence relation between the two surfaces of the composite information matrix through undamaged matrix units in the partially damaged A surface basic information matrix;
the method comprises the following steps of A-side-B-side double-sided decoding, wherein a specific decoding mode is that a part of damaged A-side basic information matrix is subjected to step 3) and step 4) to form a new generation of damaged gray value matrix, matrix units which cannot be uniquely determined by gray value calculation caused by damage of part of matrix units in the new generation of damaged gray value matrix are marked by special marks, and double-sided decoding and data recovery are carried out on the damaged gray value matrix by comparing the damaged gray value matrix with the new generation of damaged gray value matrix;
9) Double-sided decoding of composite information matrix from B to A
Through undamaged matrix units in the partially damaged B-surface gray scale value matrix, double-surface decoding from the B surface to the A surface is realized according to the information incidence relation between the two surfaces of the composite information matrix;
the decoding of the two surfaces from the B surface to the A surface is carried out in a specific decoding mode, when the matrix unit of the gray value matrix is 0, the binary values of the upper matrix unit, the lower matrix unit, the left matrix unit, the right matrix unit and the self five matrix units of the expansion damaged basic information matrix formed by the step 3) on the A surface are all 0; when the matrix unit of the gray value matrix is 5, the binary values of the upper matrix unit, the lower matrix unit, the left matrix unit, the right matrix unit and the self five matrix units in the expanded damaged basic information matrix are all 1; when the matrix unit of the gray value matrix is 4, only one 0 or four 1 in the five matrix units of the upper matrix unit, the lower matrix unit, the left matrix unit, the right matrix unit and the matrix unit in the expanded damaged basic information matrix can be uniquely determined; when the matrix unit of the gray value matrix is 3, only two 0 or three 1 matrix units are needed in the upper matrix unit, the lower matrix unit, the left matrix unit, the right matrix unit and the self five matrix units corresponding to the matrix unit in the expanded damaged basic information matrix, and the rest matrix units can be uniquely determined; when the matrix unit of the gray value matrix is 2, only three 0 or two 1 matrix units are needed in the five matrix units of the upper matrix unit, the lower matrix unit, the left matrix unit, the right matrix unit and the self matrix unit corresponding to the matrix unit in the expanded damaged basic information matrix, and the rest matrix units can be uniquely determined; when the matrix unit of the gray value matrix is 1, only four 0 or 1 matrix units are needed to be arranged in the upper matrix unit, the lower matrix unit, the left matrix unit, the right matrix unit and the self five matrix units corresponding to the matrix unit in the expanded damaged basic information matrix, and the rest matrix units can be uniquely determined;
10 Conditions for decoding iteration and stopping iteration
The decoding process is carried out according to the sequence of the step 7), the step 8) and the step 9) each time, iteration is repeated, after each iteration is finished, the proportion of damaged matrix units containing special mark marks in the latest-generation damaged composite information matrix is used as a first iteration stopping condition, and the settable upper limit number of iteration is used as a second iteration stopping condition.
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