CN116739029A - Anti-fake mark generation method, anti-fake mark and anti-fake information reading method - Google Patents

Anti-fake mark generation method, anti-fake mark and anti-fake information reading method Download PDF

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Publication number
CN116739029A
CN116739029A CN202310700864.3A CN202310700864A CN116739029A CN 116739029 A CN116739029 A CN 116739029A CN 202310700864 A CN202310700864 A CN 202310700864A CN 116739029 A CN116739029 A CN 116739029A
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information
spectrum
mark
counterfeiting
channel
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鲍捷
刘森阳
请求不公布姓名
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Quantaeye Beijing Technology Co ltd
Tsinghua University
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Quantaeye Beijing Technology Co ltd
Tsinghua University
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Priority to CN202310700864.3A priority Critical patent/CN116739029A/en
Publication of CN116739029A publication Critical patent/CN116739029A/en
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
    • G06K19/06046—Constructional details
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q30/00—Commerce
    • G06Q30/018—Certifying business or products
    • G06Q30/0185—Product, service or business identity fraud

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
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  • Entrepreneurship & Innovation (AREA)
  • Development Economics (AREA)
  • Economics (AREA)
  • Finance (AREA)
  • Marketing (AREA)
  • Strategic Management (AREA)
  • General Business, Economics & Management (AREA)
  • Credit Cards Or The Like (AREA)

Abstract

The present disclosure relates to a method for generating an anti-counterfeit mark, and a method for reading anti-counterfeit information, the method for generating the anti-counterfeit mark comprising: according to the anti-counterfeiting information, obtaining graphic information and the number of spectrum channels corresponding to the anti-counterfeiting information; determining the material category corresponding to each spectrum channel according to the number of the spectrum channels; and obtaining the anti-counterfeiting mark corresponding to the anti-counterfeiting information according to the material category and the graphic information. According to the anti-counterfeiting mark generation method, the spectrum channel number can be obtained according to the anti-counterfeiting information, and the corresponding materials are selected based on the spectrum channel number, so that the anti-counterfeiting information is reflected through the spectrum information of various materials.

Description

Anti-fake mark generation method, anti-fake mark and anti-fake information reading method
Technical Field
The disclosure relates to the technical field of optical information, and in particular relates to a method for generating an anti-counterfeiting mark, the anti-counterfeiting mark and a method for reading the anti-counterfeiting information.
Background
In the circulation process of the product, a lot of fake and inferior products can be generated, so that the reputation of a real product manufacturer is influenced, the benefits of consumers are influenced more possibly, and therefore, the guarantee of the authenticity of the product is very important. The number of counterfeit products can be reduced by adopting the technologies of anti-counterfeit marks, two-dimensional codes or bar codes and the like to prevent counterfeiting, but the counterfeit marks, two-dimensional codes or bar codes and the like are difficult to imitate, so that the occurrence of the counterfeit products is still difficult to prevent. Therefore, the above means have difficulty in playing a significant role in preventing the circulation of counterfeit and inferior products.
Disclosure of Invention
The disclosure provides an anti-counterfeiting mark generation method, an anti-counterfeiting mark and an anti-counterfeiting information reading method.
According to an aspect of the present disclosure, there is provided a method for generating an anti-counterfeit mark, including: according to the anti-counterfeiting information, obtaining graphic information corresponding to the anti-counterfeiting information and the number of spectrum channels; determining the material category corresponding to each spectrum channel according to the spectrum channel number; and obtaining the anti-counterfeiting mark corresponding to the anti-counterfeiting information according to the material category and the graphic information.
In one possible implementation manner, according to the anti-counterfeiting information, obtaining graphic information corresponding to the anti-counterfeiting information and the number of spectrum channels includes: determining the number of the spectrum channels according to the character bit number of the anti-counterfeiting information; and determining graphic information corresponding to each spectrum channel according to the content of each character bit of the anti-counterfeiting information.
In one possible implementation manner, according to the material category and the graphic information, obtaining the anti-counterfeiting mark corresponding to the anti-counterfeiting information includes: and obtaining the anti-counterfeiting mark according to the graphic information and the material category corresponding to each spectrum channel.
According to an aspect of the present disclosure, there is provided a security device comprising: the anti-fake mark comprises a plurality of mark points, wherein at least part of the mark points comprise at least one material, each material corresponds to one character bit of anti-fake information of the anti-fake mark, graphic information formed by the plurality of mark points containing the same material corresponds to the content of the character bit corresponding to the material, and each mark point in the plurality of mark points containing the same material corresponds to a pixel point forming the content.
In one possible implementation, the spectral information generated by the marker points when irradiated by the predetermined incident light includes at least one spectral channel, each spectral channel corresponding to a material.
In one possible implementation, the anti-counterfeiting mark is obtained according to the anti-counterfeiting mark generation method.
In one possible implementation, the material comprises a quantum dot spectroscopic material.
According to an aspect of the present disclosure, there is provided an anti-counterfeiting information reading apparatus including: illuminating the anti-counterfeiting mark through preset incident light to obtain spectrum information of a plurality of mark points of the anti-counterfeiting mark; analyzing the spectrum information of each marking point to obtain a spectrum channel of each marking point; according to the spectrum channels of the marking points, graphic information corresponding to the spectrum channels is obtained; and obtaining anti-counterfeiting information corresponding to the anti-counterfeiting mark according to the graphic information.
In one possible implementation manner, the analyzing the spectrum information of each mark point to obtain the spectrum channel of each mark point includes: and analyzing the spectrum information of each mark point through a spectrum channel matrix corresponding to the plurality of spectrum channels to obtain the spectrum channel of each mark point.
In one possible implementation manner, according to the spectrum channel of each mark point, obtaining graphic information corresponding to each spectrum channel includes: determining the same marking point of the spectrum channel according to the spectrum channel of each marking point; and obtaining the graphic information formed by the mark points with the same spectrum channel according to the mark points with the same spectrum channel.
In one possible implementation manner, the obtaining the spectrum information of the plurality of marking points of the anti-counterfeiting mark includes: respectively irradiating a plurality of mark points of the anti-counterfeiting mark through preset incident light rays to obtain spectrum curves of the plurality of mark points; and sampling the spectrum curve to obtain spectrum information of the plurality of mark points.
In one possible implementation manner, analyzing the spectrum information of a plurality of mark points in the anti-counterfeiting mark through a spectrometer to obtain a spectrum channel of each mark point; and further obtaining the anti-counterfeiting information.
According to an aspect of the present disclosure, there is provided an anti-counterfeit mark and an anti-counterfeit information reading system, including the anti-counterfeit mark and a spectrometer.
According to the anti-counterfeiting mark generation method, the number of the spectrum channels can be obtained according to the anti-counterfeiting information, the corresponding materials are selected based on the number of the spectrum channels and the spectrum characteristics of the materials, so that the anti-counterfeiting information is reflected through the spectrum information of various materials, and the spectrum information corresponds to the material types which are difficult to directly observe, so that the anti-counterfeiting mark is difficult to imitate, and the circulation of counterfeit and inferior products can be effectively restrained.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. Other features and aspects of the present disclosure will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the technical aspects of the disclosure.
FIG. 1 illustrates a flow chart of a method of anti-counterfeit label generation in accordance with an embodiment of the present disclosure;
FIG. 2 shows a schematic diagram of graphical information according to an embodiment of the present disclosure;
fig. 3A and 3B show application diagrams of a method for generating a security mark according to an embodiment of the present disclosure.
Detailed Description
Various exemplary embodiments, features and aspects of the disclosure will be described in detail below with reference to the drawings. In the drawings, like reference numbers indicate identical or functionally similar elements. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
The word "exemplary" is used herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the term "at least one" herein means any one of a plurality or any combination of at least two of a plurality, for example, including at least one of A, B, C, and may mean including any one or more elements selected from the group consisting of A, B and C.
Furthermore, numerous specific details are set forth in the following detailed description in order to provide a better understanding of the present disclosure. It will be understood by those skilled in the art that the present disclosure may be practiced without some of these specific details. In some instances, methods, means, elements, and circuits well known to those skilled in the art have not been described in detail in order not to obscure the present disclosure.
Fig. 1 shows a flowchart of a method for generating a security mark according to an embodiment of the present disclosure, as shown in fig. 1, the method includes:
in step S11, according to the anti-counterfeiting information, obtaining graphic information corresponding to the anti-counterfeiting information and the number of spectrum channels;
In step S12, determining a material class corresponding to each spectrum channel according to the number of spectrum channels;
in step S13, according to the material category and the graphic information, a security label corresponding to the security information is obtained.
According to the anti-counterfeiting mark generation method, the spectrum channel number can be obtained according to the anti-counterfeiting information, and the corresponding materials are selected based on the spectrum channel number, so that the anti-counterfeiting information is reflected through the spectrum information of various materials.
In one possible implementation, aiming at the problem that the anti-counterfeiting mark is easy to imitate in the related technology, the anti-counterfeiting mark can select multiple material types based on the anti-counterfeiting information, so that patterns corresponding to the anti-counterfeiting information are formed based on the materials of the multiple types, and when the anti-counterfeiting information is read, the patterns corresponding to the anti-counterfeiting information can be identified according to the spectrum information of the materials of the various types, and then the anti-counterfeiting information is read based on the patterns. The anti-counterfeiting mark obtained based on the spectrum information of the multiple materials can improve imitation difficulty and product safety.
In one possible implementation manner, when the anti-counterfeiting mark is manufactured, the quantity and the content of the anti-counterfeiting information can be determined first, then the material is selected based on the quantity of the anti-counterfeiting information, and the graphic information corresponding to the content is determined, so that the anti-counterfeiting mark corresponding to the anti-counterfeiting information is generated based on the material and the graphic information.
In one possible implementation, in step S11, graphic information corresponding to the anti-counterfeiting information, and the number of spectral channels may be obtained according to the anti-counterfeiting information. The number of spectrum channels corresponds to the number of contents of the anti-counterfeiting information and also corresponds to the number of material types, for example, each material can have specific spectrum information, the spectrum information of each material can be used as one spectrum channel, and in a composite material formed by mixing a plurality of materials, the obtained spectrum information of the composite material can be analyzed into the spectrum information of a plurality of spectrum channels, namely, the spectrum information of each material can be analyzed. Accordingly, the number of the material types may be made to correspond to the number of character bits of the security information, that is, the security information may include a plurality of characters, the number of characters is the number of character bits, and the number of character bits may be identical to the number of the material types, for example, each material corresponds to one character bit in the security information, so that the security information may be determined based on spectral information of the plurality of materials by the plurality of materials, and the security mark may be made of the plurality of materials.
The anti-fake information may consist of characters and includes some number of character bits, and the character of each character bit is the content of the character bit. For example, the security information is "012X", including 4 character bits, and the contents are "0", "1", "2", and "X", respectively.
In another example, the number of character bits may also be the number of bits of the characters of the encoded anti-counterfeiting information, for example, if the content number of the anti-counterfeiting information is large and the number of characters is large, it is difficult to directly use the number of materials consistent with the number of characters, and thus, a plurality of characters of the anti-counterfeiting information may be encoded in the same manner, for example, an ASCII code of all the characters is acquired, each character in the anti-counterfeiting information may be converted into 7-bit binary data (i.e., the character of the anti-counterfeiting information after encoding, in which the first bit of the ASCII code is omitted), and thus, 7 materials may be used to represent each character bit of each binary data. In an example, each character bit of 7-bit binary data includes two cases, i.e., 0 or 1, and 7 character bits correspond to 7 materials, respectively, and thus 7 materials or a part of 7 materials may be mixed, spectral information of the mixed materials may represent one 7-bit binary data, for example, 1 st character bit of 7-bit binary data is "1" when 1 st material is included in the mixed materials, 2 nd character bit of 7-bit binary data is "0" … … when 2 nd material is not included in the mixed materials, and thus, characters in each security information may be encoded, converted into ASCII codes, and may be represented by a part or all of 7 materials.
In one possible implementation, step S11 may include: determining the number of the spectrum channels according to the character bit number of the anti-counterfeiting information; and determining graphic information corresponding to each spectrum channel according to the content of each character bit of the anti-counterfeiting information.
In an example, the number of spectrum channels may correspond to the number of character bits of the anti-counterfeiting information, and may also correspond to the number of material types, each type of material may have specific spectrum information, and the spectrum information of each material is one spectrum channel, so that the spectrum information (i.e., each spectrum channel) of multiple types of materials may be used to reflect the character bits of the anti-counterfeiting information, and each character bit may correspond to one spectrum channel, i.e., one material. Therefore, a plurality of character bits of the anti-counterfeiting information can be expressed by selecting a plurality of types of materials. Thus, the number of spectral channels may be determined based on the number of character bits of the security information, followed by selection of a corresponding class number of materials, e.g., quantum dot materials.
In an example, each material may have unique spectrum information, i.e., one spectrum channel, and multiple materials may have multiple spectrum information, i.e., multiple spectrum channels, and when the storage unit made of multiple materials is irradiated by the light source, the multiple spectrum information may be obtained, and the multiple spectrum information may be analyzed to obtain multiple spectrum channels, so that the spectrum information of each material may be obtained, and thus the type of the material may be determined, and the type of the material corresponds to a character bit of the anti-counterfeiting information, for example, one type of the material corresponds to one character bit of the anti-counterfeiting information.
Further, after determining the number of character bits (i.e., determining the number of spectral channels, or determining the class of material and the number of classes thereof), the content of each character bit may also be determined, which in an example may be represented based on graphical information. For example, the content of the character bit is a number or a character, a figure corresponding to the number or the character may be formed using a material of a class corresponding to the character bit, and for example, the content of the character bit may be first encoded, for example, an ASCII code of the content is obtained, and a figure corresponding to the ASCII code may be formed using a material of a class corresponding to the character bit. The present disclosure does not limit the manner in which the graphics information is obtained.
Fig. 2 illustrates a schematic diagram of graphic information according to an embodiment of the present disclosure, as shown in fig. 2, which may be obtained using a marked point, for example, a content of a certain character bit is a number "2", and a graphic of the number "2" may be formed using a plurality of marked points, as shown in fig. 2 as a black marked point.
In one possible implementation, in step S12, a material class corresponding to each spectral channel may be determined according to the number of spectral channels. As described above, the number of character bits of the anti-counterfeiting information corresponds to the number of spectrum channels, and also corresponds to the number of material types, and each type of material can correspond to one spectrum channel and also corresponds to one character bit of the anti-counterfeiting information. The anti-counterfeiting mark manufactured based on the material can be irradiated by incident light to obtain composite spectrum information, and the spectrum information of a plurality of spectrum channels can be obtained by analyzing the spectrum information, so that the number of character bits and the number of character bits included in the anti-counterfeiting information can be determined, for example, the number of character bits and the number of character bits included in a certain mark point of the anti-counterfeiting information can be determined.
In one possible implementation, in step S13, the security marking may be made using the above-determined class of materials. Step S13 may include: and obtaining the anti-counterfeiting mark according to the graphic information and the material category corresponding to each spectrum channel.
In one possible implementation, the material of the material class corresponding to the spectrum channel and the image information may be used to form the graphic information corresponding to the spectrum channel, for example, a number of a certain character bit is "2", and the graphic information corresponding to the material corresponding to the character bit (corresponding to the spectrum channel) may be drawn in the mark point as shown in fig. 2, that is, the information corresponding to the shape of the content of the character bit is generated, or the information corresponding to the shape of a certain code of the content of the character bit is generated, for example, the graphic information has the shape of "2", which is not limited by the present disclosure.
In one possible implementation, the anti-counterfeiting mark can be obtained according to pattern information and material types of each spectrum channel. In an example, the anti-counterfeiting mark can be obtained by superposing graphic information (corresponding to each spectral channel or each character bit) generated by various materials. For example, taking the above marking point as an example, the corresponding type of material of each spectrum channel may be used to draw respective graphic information, for example, corresponding materials (such as printing, coating liquid materials, or attaching solid materials such as films) are coated on the corresponding marking points, and the graphic information of each character position is superimposed to obtain the anti-counterfeiting mark, where some marking points may be coated with multiple materials. In another example, based on the graphic information corresponding to each character bit, it may be determined which materials are respectively coated on each marking point, and then each marking point is respectively coated to obtain the anti-counterfeiting mark. For example, the content of a certain character bit is "1", the content of another character bit is "2", the graphic information of two character bits respectively includes respective marking points, the types of materials to be coated can be summarized according to the marking points, for example, the marking points of the first row and the first column need to be coated with materials corresponding to the character bit with the content of "2", the materials corresponding to the character bit with the content of "1" are not coated, the marking points of the first row and the second column need to be coated with materials corresponding to the character bit with the content of "2", the materials corresponding to the character bit with the content of "1" are also required to be coated, the two materials can be mixed and then coated, or the materials required to be coated for each marking point can be determined according to the mode by superposing and attaching (suitable for spectral channel encryption) …, and after the coating of all marking points is completed, the anti-counterfeiting mark can be obtained. The present disclosure is not limited to the particular manner of coating.
In one possible implementation manner, the above manner may be used to obtain the anti-counterfeiting mark corresponding to various anti-counterfeiting information, and since the anti-counterfeiting mark is made based on the material of the type corresponding to the character bit, the spectrum information of the anti-counterfeiting mark needs to be obtained during reading, so that the anti-counterfeiting information can be read, and the type of the material is difficult to imitate through observation. Further, even if the spectrum information can be obtained and imitated by using a material having similar spectrum information, the spectrum information of the mark point may be composite spectrum information formed by mixing the spectrum information of a plurality of spectrum channels, and thus, even if the type and the number of types of the plurality of materials for manufacturing the mark point are unknown, the composite spectrum information cannot be analyzed, and thus, the anti-counterfeit information cannot be obtained. Therefore, the above-mentioned counterfeit-proof mark is difficult to imitate.
In one possible implementation manner, after the anti-counterfeiting mark is obtained, the anti-counterfeiting mark can be attached to a product, after a purchaser or a user of the product obtains the product, anti-counterfeiting information corresponding to the anti-counterfeiting mark can be read in a specific manner and compared with verification information corresponding to the product, for example, the verification information is information for verification corresponding to the product one by one, the information can be consistent with correct anti-counterfeiting information, the information can be provided to the user or the purchaser along with the product, for example, printed on a package of the product, or sent to a mobile phone of the user or the purchaser, and the like. After a user reads the anti-counterfeiting information corresponding to the anti-counterfeiting mark in a specific mode, the anti-counterfeiting information can be compared with the verification information, if the anti-counterfeiting information is consistent with the verification information, the anti-counterfeiting information is correct, and the product has no problems of counterfeit, fake and the like. Otherwise, if not, the product may impersonate the counterfeit product.
In one possible implementation, the present disclosure further provides a security device, the security device comprising: and the plurality of mark points comprise at least one material, each material corresponds to one character bit of the anti-counterfeiting information of the anti-counterfeiting mark, the graphic information formed by the plurality of mark points containing the same material corresponds to the content of the character bit corresponding to the material, each mark point in the plurality of mark points containing the same material corresponds to the minimum unit point forming the content, and the combination of the plurality of minimum unit points can form the graphic of the content. The mark points are a plurality of points included in the security mark, for example, 15 points in fig. 2, and the minimum unit point of the content is a point constituting a shape of the numeral "2" in fig. 2.
In one possible implementation, some or all of the plurality of marker points may be used to construct a variety of graphics, such as graphics of numbers or characters. The marking points can be made of at least one material, each material corresponds to one character bit of the anti-counterfeiting information of the anti-counterfeiting mark, and if the marking points contain a certain material, the marking points correspond to the character bits corresponding to the material, so that the content of the character bits can be represented by the graphic information formed by the marking points.
In one possible implementation, the spectral information generated by the marker points when irradiated by the predetermined incident light includes at least one spectral channel, each spectral channel corresponding to a material. When each marking point of the anti-counterfeiting mark is irradiated by a preset incident light, the marking point can be made of at least one material, so that the spectrum information generated by irradiating the marking point is composite spectrum information, namely, the spectrum information generated by irradiating each material by the incident light is weighted and summed. Therefore, the composite spectrum information may include at least one spectrum channel, each spectrum channel corresponds to one material, that is, spectrum information generated by irradiation of each material by incident light is one spectrum channel, and the spectrum information of at least one spectrum channel is weighted and summed to obtain the composite spectrum information. When the anti-counterfeiting information of the anti-counterfeiting mark is read, the composite spectrum information of each mark point can be analyzed to determine which spectrum channels are included in the spectrum information of each mark point, so that which materials are included in each mark point can be determined. Further, it is possible to determine which mark points include the same material, the mark points correspond to character bits corresponding to the material, and graphic information formed by the mark points corresponds to the content of the character bits, so that the content of each character bit can be read out, and anti-counterfeiting information can be obtained.
In an example, the material includes quantum dot spectrum material, and specific spectrum information can be presented under the irradiation of incident light, so that the spectrum information can be analyzed conveniently, which kinds of materials are included in the mark points of the anti-counterfeiting mark are determined, and the mark points of the same material are combined into a graph, so that the anti-counterfeiting information is determined. The anti-counterfeiting mark can be obtained by the anti-counterfeiting mark generation method. The method for obtaining the anti-counterfeiting mark is not limited by the present disclosure.
In one possible implementation manner, the disclosure provides a method for reading anti-counterfeiting information, including: illuminating the anti-counterfeiting mark through preset incident light to obtain spectrum information of a plurality of mark points of the anti-counterfeiting mark; analyzing the spectrum information of each marking point to obtain a spectrum channel of each marking point; according to the spectrum channels of the marking points, graphic information corresponding to the spectrum channels is obtained; and obtaining anti-counterfeiting information corresponding to the anti-counterfeiting mark according to the graphic information.
The analysis of the spectrum information, the graphic information and the anti-counterfeiting information can be performed by electronic equipment such as a computer.
In one possible implementation manner, when the anti-counterfeiting information corresponding to the anti-counterfeiting mark is read, the anti-counterfeiting mark can be irradiated through a preset incident light ray so as to obtain the spectrum information of each mark point. The incident light may include light in a variety of wavelength bands, such as, for example, multiple color light, and the present disclosure is not limited to the wavelength bands included in the incident light. By irradiation of the incident light, spectrum information, that is, composite spectrum information as described above, can be acquired. The composite spectrum information may include spectrum information of a plurality of spectrum channels, and as described above, the spectrum channels may correspond to the material types, and also correspond to the character bits of the anti-counterfeiting information, and the graphic information formed by the mark points having the same spectrum channels may correspond to the content of the character bits. Therefore, the composite spectrum information of each mark point can be analyzed to obtain the spectrum channel of each mark point, and further the graphic information corresponding to each spectrum channel (namely, each character bit) is determined, so as to obtain the content of each character bit, and further the anti-counterfeiting information corresponding to the anti-counterfeiting mark is determined.
In one possible implementation, to facilitate reading of the information, and analysis of the spectral information, the obtained spectral information may be sampled to obtain discrete spectral information, e.g., in the form of a vector, to facilitate analysis. The obtaining the spectrum information of the plurality of mark points of the anti-counterfeiting mark comprises the following steps: respectively irradiating a plurality of mark points of the anti-counterfeiting mark through preset incident light rays to obtain spectrum curves of the plurality of mark points; and comparing the obtained spectrum curve with spectrum library information to obtain spectrum information of the plurality of mark points, wherein the spectrum library comprises corresponding relation information of the spectrum curve and the material.
In an example, a spectrum curve can be obtained by irradiating each mark point of the anti-counterfeiting mark, and the spectrum curve is continuous spectrum information. The spectral curve may be sampled, for example, at a preset sampling point, and may be randomly sampled, for example, to obtain the discrete spectral information, so as to facilitate analysis. The present disclosure does not limit the sampling manner.
In one possible implementation, the spectral information of each marker point may be resolved separately to obtain a spectral channel of each marker point. In an example, the discrete spectral information described above may be parsed. As described above, the spectrum information is composite spectrum information, and may include spectrum information of a plurality of spectrum channels, and thus, the composite spectrum information is a result of the spectrum information of the plurality of spectrum channels being superimposed. Analyzing the composite spectral information can determine which spectral channels are included in the composite spectral information.
In an example, the materials for making the mark points are all known materials, that is, the types of the materials are known to be a plurality of types so as to respectively correspond to each character bit of the anti-counterfeiting information. Therefore, the spectrum channel of each class of material is a known spectrum channel, so that the spectrum information of the mark point can be analyzed to determine whether the spectrum information of a certain class of material is contained in the composite spectrum information, and whether the mark point is included in the graphic information of the content of the character bit corresponding to the spectrum channel can be determined. In an example, a spectrum library including spectrum information of a plurality of materials may be constructed, where the spectrum library includes information about a correspondence between a spectrum curve and a material, and when spectrum information is obtained by irradiating a certain mark point with incident light, the spectrum information may be compared with spectrum information in the spectrum library, so as to determine what material the mark point includes.
In one possible implementation manner, the analyzing the spectrum information of each mark point to obtain the spectrum channel of each mark point includes: and analyzing the spectrum information of each mark point through a spectrum channel matrix corresponding to the plurality of spectrum channels to obtain the spectrum channel of each mark point.
In one possible implementation manner, the analysis may be performed by a spectrum channel matrix, where column vectors in the spectrum channel matrix are spectrum information corresponding to spectrum channels of various materials, which acts similarly on the spectrum library, and the weighted summation may be performed on each column vector of the spectrum channel matrix (i.e., the spectrum channel matrix is multiplied by a vector formed by weights of each spectrum channel), so as to obtain the composite spectrum information (spectrum information in vector form).
In one possible implementation, each column vector of the spectrum channel matrix (i.e., spectrum information of each spectrum channel) may be obtained by irradiating a single type of material and sampling the same light as the incident light, and the sampling manner is the same as that of the composite spectrum curve. Thus, spectral information (i.e., column vectors corresponding to each spectral channel) for each material can be obtained and the matrix of spectral channels constructed.
In one possible implementation manner, the composite spectrum information is obtained by multiplying a spectrum channel matrix by a vector (i.e., spectrum channel order) formed by weights of each spectrum channel, as shown in the following formula (1):
Wherein, the liquid crystal display device comprises a liquid crystal display device,is composite spectral information S i The sampling value of the ith sampling point (i is a positive integer) of the spectrum curve is n (n is more than or equal to i and n is an integer) in total. />For the matrix of spectral channels->Spectral information of j-th material, D j (λ i ) For the sample value of the i-th sample point, +.>Is the order of the spectrum channels, and is also the vector formed by the weight of each spectrum channel, W (lambda) j ) Is the weight of the jth spectral channel.
In one possible implementation, the composite spectral information in equation (1) may be resolved by a spectral channel matrix, for example, the inverse matrix of the spectral channel matrix may be multiplied simultaneously on both sides of equation (1) to obtain the weight of each spectral channel.
In one possible implementation, if the weight of a spectral channel corresponding to a certain material is 0, the spectral channel is not included in the mark point, and accordingly, the material corresponding to the spectral channel is not included in the material used for making the mark point, and the mark point is not included in the graphic information of the content of the character bit corresponding to the material. Conversely, if the weight of the spectral channel corresponding to a certain material is not 0, for example, 1, the graphic information of the content of the character bit corresponding to the certain material contains the mark point.
In one possible implementation manner, the spectrum information of each mark point can be determined to include which spectrum channels, so that the graph information corresponding to each spectrum channel can also be determined to include which mark points. According to the spectrum channels of the marking points, graphic information corresponding to the spectrum channels is obtained, and the method comprises the following steps: determining the same marking point of the spectrum channel according to the spectrum channel of each marking point; and obtaining the graphic information formed by the mark points with the same spectrum channel according to the mark points with the same spectrum channel.
In an example, the spectral channels included in the spectral information of all the mark points may be determined, and the graphic information composed of all the mark points including the spectral channel may be determined for each spectral channel, respectively. For example, the spectrum channel a is a spectrum channel corresponding to the first character bit (spectrum channel corresponding to the first material) in the anti-counterfeiting information, which mark points include the spectrum channel can be determined, and further, the graphic information formed by the mark points can be determined. Similarly, graphical information corresponding to other spectral channels may also be obtained.
In one possible implementation manner, after the graphic information corresponding to each spectrum channel is obtained, the anti-counterfeiting information of the anti-counterfeiting mark can be determined based on the graphic information, for example, the graphic information is a specific shape of the content of each character of the anti-counterfeiting mark, for example, the graphic information is a number "2", and the character bit is a number 2. In another example, the graphic information is graphic information of some kind of encoding (e.g., ASCII code) corresponding to the content of the character bits, the encoded content may be obtained based on the graphic information, and the encoded content may be decoded into the content of the corresponding character bits, e.g., ASCII code is converted into an original number or character. The present disclosure is not limited in the manner in which the specific content of the security information is obtained.
In one possible implementation manner, after the anti-counterfeiting information is obtained through the anti-counterfeiting mark, the anti-counterfeiting information can be compared with the verification information, if the anti-counterfeiting information is consistent with the verification information, the product attached with the anti-counterfeiting mark can be determined to have no counterfeit or inferior problems, otherwise, the product can be used for the counterfeit or inferior problems.
In one possible implementation manner, the spectrum information of a plurality of mark points in the anti-counterfeiting mark can be analyzed through a spectrometer, such as a quantum dot spectrometer, for portability, preferably a micro spectrometer, so as to obtain a spectrum channel of each mark point; and further obtaining the anti-counterfeiting information. For example, the quantum dot spectrometer may irradiate each mark point in the anti-counterfeiting mark at the same time, that is, the mark point is taken as a pixel, each pixel may be irradiated by the quantum dot spectrometer, spectrum information of each mark point is obtained, after analysis, material types included in each mark point may be determined, and further the mark points containing the same type of material are combined, so that content corresponding to the formed graphic information is determined, and anti-counterfeiting information is obtained. In one embodiment, the spectrometer may be integrated in an electronic terminal, such as a portable electronic terminal, even a tablet, a mobile phone, an electronic watch, etc., in the form of a spectrum sensing chip (e.g., a quantum dot spectrum sensing chip), in which case the greatest convenience may be achieved.
In one possible implementation, the disclosure further provides a security tag and a security information reading system, including the security tag and the quantum dot imaging spectrometer, which can be provided as a complete set of products.
According to the anti-counterfeiting mark generation method disclosed by the embodiment of the disclosure, the number of the spectrum channels can be obtained according to the anti-counterfeiting information, and the corresponding materials are selected based on the number of the spectrum channels, so that the anti-counterfeiting information is reflected through the spectrum information of various materials and the graphic information of the mark points made of various materials.
Fig. 3A and 3B are schematic application diagrams of the method for generating the anti-counterfeit label according to the embodiment of the present disclosure, and as shown in fig. 3A, anti-counterfeit information of a certain product is a number with four character bits, which are respectively "2", "0", "2", and "1". The four character bits may correspond to four spectral channels, respectively, each of which may correspond to an optical material.
In one possible implementation, four numbers of graphic information may be obtained separately, i.e., it is determined which marker points are included in the four numbers of graphic information. For each marker point it can be determined which spectral channels or materials the marker points correspond to, so that the marker point can be made of the corresponding material, e.g. the marker points of the first row and the first column correspond to the three spectral channels "2", "0", "2", respectively, as well as to the three materials, whereby the marker points of the first row and the first column can be made of the three materials. Various mark points of the anti-counterfeiting mark can be manufactured in this way to obtain the anti-counterfeiting mark.
In one possible implementation manner, when a certain anti-counterfeiting mark is read, each mark point of the anti-counterfeiting mark can be irradiated through preset incident light to obtain composite spectrum information of each mark point, and further analysis can be carried out through a spectrum channel matrix to determine which spectrum channels are included in the composite spectrum information of each mark point, so that it can be determined which mark points correspond to each spectrum channel. For example, as shown in fig. 3B, the spectrum channel 1 corresponds to the mark point of the first row and the first column, the mark point of the first row and the second column, the mark point of the first row and the third column, and the mark point … … of the second row and the third column, and these mark points together form a shape of a number "2", similarly, the mark point corresponding to the spectrum channel 2 forms a shape of "0", the mark point corresponding to the spectrum channel 3 forms a shape of "2", and the mark point corresponding to the spectrum channel 4 forms a shape of "1", so that the anti-counterfeiting information of the anti-counterfeiting mark is "2", "0", "2", "1" four numbers, and the anti-counterfeiting information can be compared with the verification information, and if the numbers are consistent, it can be determined that the product to which the anti-counterfeiting mark is a genuine product, otherwise, it may be a counterfeit product.
In another example, the security information may include "EARTH"5 letters, and then 5 materials may be required to over-construct 5 spectral channels, e.g., QD films made using five materials QD486, QD507, QD527, QD545, QD568, where the spectral channels of the 5 material QD films (i.e., the spectral information of a single film under irradiation with incident light) are C1, C2, C3, C4, C5, respectively.
In one possible implementation, the film types included at each marker point may be determined based on the shape of the five letters "EARTH", e.g., at the marker point of the top left corner vertex, the shapes of the four letters "E", "R", "T", and "H" of the five letters each include the marker point, and thus the marker point may have QD films corresponding to the four letters. After printing, a QD film array may be obtained, which may include a plurality of marker points therein, and the material (type of QD film) included at each marker point corresponds to whether the marker point is included in the shape of the letter.
In one possible implementation, during the reading process, a spectrometer may be used, and in one implementation, a quantum dot spectrometer may be used to illuminate each mark point and obtain spectral information of each mark point separately. Further, the spectral information of each of the marker points may be compared (i.e., parsed) with a spectral library constructed based on the spectral channels of the QD films described above, thereby determining the spectral channels of the QD films included in each of the marker points, i.e., determining whether various QD films are included in each of the marker points. The shapes of the marking points comprising the same QD film can be combined and drawn, so that the shapes of letters represented by the marking points comprising the same QD film can be obtained, for example, the marking points comprising the C1 material can be combined into the shape of "E", and similarly, the shapes of other letters can be combined, and finally, the anti-counterfeiting information formed by the five letters "EARTH" can be obtained.
In another example, if the anti-counterfeiting information has more characters and a larger information content, each character may be converted into an ASCII code, i.e., a binary code having a specific correspondence with the character, and in one example, the binary code of each character includes 7 bits, the spectral channels of 7 materials (e.g., 7 QD films, one character bit for each material) may be determined.
In one possible implementation, the spectral channels included in each character in the anti-counterfeiting information may be determined, for example, the 1 st character P1 is the letter "I", the ASCII code is 1001001 (the first digit is omitted), the spectral channels of the 1 st, 4 th and 7 th materials may be included, and the 1 st mark point in the QD film array may be fabricated using the 1 st, 4 th and 7 th QD films. The QD film can be obtained by making each of the marker dots in the above-described manner.
In one possible implementation manner, during the process of reading the anti-counterfeiting information, the spectrum information of each mark point of the QD film can be read, and the spectrum information of each mark point is analyzed through the spectrum library constructed by the spectrum information of the 7 materials, so that the spectrum channel contained in each point is determined, and the type of the QD film contained in each mark point is further determined.
In one possible implementation, based on the type of QD film included in each marker, the ASCII code corresponding to each marker may be restored, e.g., the first marker includes the 1 st, 4 th and 7 th QD films, and thus the ASCII code thereof is 1001001. The above processing is repeatedly performed, or the processing of restoring the ASCII code of all the mark points is performed in parallel, and the ASCII code of each mark point can be obtained. Further, the corresponding relation between ASCII codes and characters can be used for determining the characters corresponding to all the marking points in the QD film array, so that the anti-counterfeiting information can be read.
It will be appreciated that the above-mentioned method embodiments of the present disclosure may be combined with each other to form a combined embodiment without departing from the principle logic, and are limited to the description of the present disclosure. It will be appreciated by those skilled in the art that in the above-described methods of the embodiments, the particular order of execution of the steps should be determined by their function and possible inherent logic.
The foregoing description of the embodiments of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the improvement of technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (13)

1. The anti-counterfeiting mark generation method is characterized by comprising the following steps of:
according to the anti-counterfeiting information, obtaining graphic information corresponding to the anti-counterfeiting information and the number of spectrum channels;
determining the material category corresponding to each spectrum channel according to the spectrum channel number;
and obtaining the anti-counterfeiting mark corresponding to the anti-counterfeiting information according to the material category and the graphic information.
2. The method of claim 1, wherein obtaining graphic information corresponding to the anti-counterfeiting information and the number of spectral channels based on the anti-counterfeiting information comprises:
determining the number of the spectrum channels according to the character bit number of the anti-counterfeiting information;
and determining graphic information corresponding to each spectrum channel according to the content of each character bit of the anti-counterfeiting information.
3. The method of claim 2, wherein obtaining a security label corresponding to the security information based on the material class and the graphical information, comprises:
and obtaining the anti-counterfeiting mark according to the graphic information and the material category corresponding to each spectrum channel.
4. A security device, comprising:
the anti-fake mark comprises a plurality of mark points, wherein at least part of the mark points comprise at least one material, each material corresponds to one character bit of anti-fake information of the anti-fake mark, graphic information formed by the plurality of mark points containing the same material corresponds to the content of the character bit corresponding to the material, and each mark point in the plurality of mark points containing the same material corresponds to a pixel point forming the content.
5. The security device of claim 4 wherein the spectral information generated by the marker points upon irradiation with a predetermined incident light comprises at least one spectral channel, each spectral channel corresponding to a material.
6. A security marking according to claim 4 or 5, characterized in that the security marking is obtained according to the method of any one of claims 1-3.
7. The security device of claim 6, wherein said material comprises quantum dot nanomaterials.
8. A method for reading anti-counterfeiting information, comprising:
illuminating the anti-counterfeiting mark according to any one of claims 4-7 through preset incident light to obtain spectrum information of a plurality of mark points of the anti-counterfeiting mark;
analyzing the spectrum information of each marking point to obtain a spectrum channel of each marking point;
according to the spectrum channels of the marking points, graphic information corresponding to the spectrum channels is obtained;
and obtaining anti-counterfeiting information corresponding to the anti-counterfeiting mark according to the graphic information.
9. The method of claim 8, wherein analyzing the spectral information of each marker separately to obtain the spectral channel of each marker comprises:
And analyzing the spectrum information of each mark point through a spectrum channel matrix corresponding to the plurality of spectrum channels to obtain the spectrum channel of each mark point.
10. The method of claim 8, wherein obtaining graphical information corresponding to each spectral channel from the spectral channels of each marker comprises:
determining the same marking point of the spectrum channel according to the spectrum channel of each marking point;
and obtaining the graphic information formed by the mark points with the same spectrum channel according to the mark points with the same spectrum channel.
11. The method of claim 8, wherein the obtaining spectral information for the plurality of marker points of the security device comprises:
respectively irradiating a plurality of mark points of the anti-counterfeiting mark through preset incident light rays to obtain spectrum curves of the plurality of mark points;
and comparing the obtained spectrum curve with spectrum library information to obtain spectrum information of the plurality of mark points, wherein the spectrum library comprises corresponding relation information of the spectrum curve and the material.
12. The method according to any one of claims 8-11, wherein the spectral information of a plurality of mark points in the anti-counterfeit mark is resolved by a spectrometer to obtain a spectral channel of each mark point; and further obtaining the anti-counterfeiting information.
13. A security marking and security information reading system, characterized in that it comprises a security marking and a spectrometer according to any of claims 4-7.
CN202310700864.3A 2023-06-13 2023-06-13 Anti-fake mark generation method, anti-fake mark and anti-fake information reading method Pending CN116739029A (en)

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