CN109242509B

CN109242509B - Lattice character information coding and decoding method for commodity outer package

Info

Publication number: CN109242509B
Application number: CN201810949250.8A
Authority: CN
Inventors: 万国春; 景宽
Original assignee: Tongji University
Current assignee: Tongji University
Priority date: 2018-08-20
Filing date: 2018-08-20
Publication date: 2021-09-14
Anticipated expiration: 2038-08-20
Also published as: CN109242509A

Abstract

The invention provides a dot matrix character information coding and decoding method for commodity external packaging, and relates to an anti-counterfeiting tracing technology of circulating commodities. The method adopts the steps of encoding commodity information sequences to generate corresponding digital characters, inserting character marking information into the information sequences to generate character-shaped dot matrixes, and generating redundant dot matrixes to enable information marks on commodities to have anti-interference performance and recoverability. The method improves the restorability of the commodity information under the condition of artificially destroying the commodity packaging information, and improves the traceability in commodity circulation.

Description

Lattice character information coding and decoding method for commodity outer package

Technical Field

The invention relates to the field of information anti-counterfeiting tracing systems for circulating commodities.

Technical Field

With the continuous development and marketing trend of economy, the circulation of trade is faster and more convenient. But commodity manufacturing enterprises face troublesome problems: in the commodity circulation process, part of dealers damage the commodity anti-counterfeiting label, so that production enterprises suffer huge economic loss. Traditional anti-counterfeiting methods such as printing methods such as laser anti-counterfeiting, label anti-counterfeiting, ink anti-counterfeiting and the like are easily damaged by people in commodity circulation, and the effective anti-counterfeiting and anti-channel conflict effects cannot be achieved. Therefore, it is an important problem to improve the restorability of information on the condition that the package of the commercial product is partially damaged.

Disclosure of Invention

The invention aims to provide a dot matrix character information coding and decoding method for commodity outer package, which can improve the commodity information recovery capability after the commodity outer package is damaged.

In order to achieve the above purposes, the invention adopts the technical scheme that:

a dot matrix character information coding and decoding method for commodity outer package is characterized by comprising the following steps:

1) commodity information collection

Collecting commodity information and converting the commodity information into a standard data format;

2) generating original information

Randomly generating an information sequence by a computer, and associating the information sequence with the acquired commodity information to form original information in a one-to-one corresponding relationship;

3) generating characters

Dividing the random information sequence into blocks, generating corresponding characters in each block, and generating a marking information sequence by the characters;

4) generating an information matrix

Shifting the information sequence, partially copying and other operations to generate a plurality of matrixes corresponding to the characters, and inserting each element of the mark information sequence of the corresponding character into the head of each row of the matrixes;

5) generating character-shaped lattices

Generating respective character-shaped dot matrixes according to the matrix information, and spraying and painting the character-shaped dot matrixes on the outer package of the commodity;

6) dot matrix information decoding

When the commodity external package information is damaged, data recovery and commodity information restoration are carried out by a decoding method.

In step 3), the characters are 16 hexadecimal numbers such as 0,1,2 … E, F and the like.

In step 3), the marking information is generated by the graphic features of each character.

In step 5), the character-shaped dot matrix refers to arranging the dot matrix corresponding to the matrix into a character form.

In step 6), the decoding refers to reading each character to restore the original information sequence, or reading a dot matrix included in a single character to restore the original information sequence.

Due to the adoption of the scheme, the invention has the following advantages: the method can effectively restore the damaged information, has good information restoration performance, quick decoding mode and easy identification, and can improve the operation efficiency.

Drawings

The present invention will be better understood and its numerous advantages will be readily apparent by reference to the detailed description taken in conjunction with the accompanying drawings.

FIG. 1 shows the arrangement and order of the lattices

FIG. 2 is a sequence of label information corresponding to characters

FIG. 3 is a 6 by 7 matrix

FIG. 4 is a 6 matrix 7 by 5

FIG. 5 is a character lattice

Detailed description of the invention

The following describes key steps in the technical scheme of the method of the invention by combining with the drawings and examples, which is favorable for better understanding of the technical scheme of the method of the invention.

1. Commodity information collection

And (3) collecting commodity information, and converting the commodity information into a standard data format for processing in the step 2.

2. Generating an original sequence:

randomly generating a 24-bit binary information sequence by a computer, such as: 101011011111110100110101. and associating the information with the acquired commodity information to form a one-to-one corresponding relation.

3. Generating characters:

dividing the random information sequence into blocks, generating corresponding characters in each block, wherein the characters generate a marking information sequence, namely:

dividing four groups of the original sequence into six groups, and generating hexadecimal numbers corresponding to each group

1010---A；1101---C；1111---F；1101---C；0011---3；0101---5

The corresponding marker information sequences are shown in FIG. 2.

4. Generating an information matrix

Shifting the information sequence, partially copying and other operations to generate six matrixes, wherein each matrix corresponds to one character in sequence, and each element of the mark information sequence of the corresponding character is inserted into the head of each row of the matrix, namely:

4.1) the number of six groups into which the original sequence was divided, starting with the first group, followed by the second, third, sixth, and first groups … …, forming a 7 x 4 matrix;

starting with the second group, followed by a third group, a fourth group … …, a sixth group, the first group, the second group, forming a 7 x 4 matrix;

the third, fourth, fifth, sixth, and so on, form a matrix of six 7 x 4, as shown in fig. 3.

4.2) inserting one element of the marking information sequence of the corresponding character of the matrix in sequence before each row of the matrix to generate 6 information matrixes of 7 x 5, as shown in figure 4.

5. Generating character-shaped lattices

The solid represents 1 and the open represents 0, 7 rows of the matrix are arranged in the sequence shown in fig. 1, and each row of numbers is arranged from left to right and from top to bottom, so that 6 lattices are generated as shown in fig. 5.

6. Decoding

When the outer package is intact, each hexadecimal digital character is read out, and the original information sequence can be restored.

When the outer package is broken, only one complete character (any one of 6) is needed to be present, and all the original information sequences can be obtained.

If each character is destroyed, one of the

parts

1 or 7 shown in fig. 1 exists in each character, and the character can be restored.

Claims

1. A dot matrix character information coding and decoding method for commodity outer package is characterized by comprising the following steps:

1) commodity information collection

2) generating original information

3) generating characters

4) generating an information matrix

Shifting the information sequence, partially copying to generate several matrixes corresponding to the characters, and inserting each element of the marked information sequence of the corresponding character into the head of each row of the matrixes; the method specifically comprises the following steps: the original sequence is divided into six groups, starting from the first group, and then the second group, the third group … …, the sixth group and the first group form a 7 x 4 matrix; starting with the second group, followed by a third group, a fourth group … …, a sixth group, the first group, the second group, forming a 7 x 4 matrix; the third, fourth, fifth, sixth, and so on, form six 7 x 4 matrices;

5) generating character-shaped lattices

Generating respective 8-shaped dot matrixes according to the matrix information, and spraying and painting the dot matrixes on the outer packages of the commodities;

6) dot matrix information decoding

2. The method for encoding and decoding lattice character information for the commodity package according to claim 1, wherein in the step 3), the characters are 16 hexadecimal numbers of 0,1,2 … E and F.

3. The method for encoding and decoding dot matrix character information for commodity external packing according to claim 1, wherein in the step 3), the mark information is generated by graphic characteristics of each character.

4. The method for encoding and decoding lattice character information for commodity outer packing according to claim 1, wherein in the step 6), the decoding means reading each character to restore the original information sequence, or reading the lattice contained in a single character to restore the original information sequence.