CN104573677A - Method and device for authenticating uniqueness of paper products - Google Patents
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- PCTMTFRHKVHKIS-BMFZQQSSSA-N (1s,3r,4e,6e,8e,10e,12e,14e,16e,18s,19r,20r,21s,25r,27r,30r,31r,33s,35r,37s,38r)-3-[(2r,3s,4s,5s,6r)-4-amino-3,5-dihydroxy-6-methyloxan-2-yl]oxy-19,25,27,30,31,33,35,37-octahydroxy-18,20,21-trimethyl-23-oxo-22,39-dioxabicyclo[33.3.1]nonatriaconta-4,6,8,10 Chemical compound C1C=C2C[C@@H](OS(O)(=O)=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2.O[C@H]1[C@@H](N)[C@H](O)[C@@H](C)O[C@H]1O[C@H]1/C=C/C=C/C=C/C=C/C=C/C=C/C=C/[C@H](C)[C@@H](O)[C@@H](C)[C@H](C)OC(=O)C[C@H](O)C[C@H](O)CC[C@@H](O)[C@H](O)C[C@H](O)C[C@](O)(C[C@H](O)[C@H]2C(O)=O)O[C@H]2C1 PCTMTFRHKVHKIS-BMFZQQSSSA-N 0.000 description 2
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- 235000007164 Oryza sativa Nutrition 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
- G06V30/40—Document-oriented image-based pattern recognition
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
- G06V30/40—Document-oriented image-based pattern recognition
- G06V30/41—Analysis of document content
- G06V30/418—Document matching, e.g. of document images
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V2201/00—Indexing scheme relating to image or video recognition or understanding
- G06V2201/09—Recognition of logos
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Abstract
The invention provides a method and a device for authenticating uniqueness of paper products, belonging to the field of image processing. The method comprises the following steps: respectively acquiring a first to-be-compared image of the first identical region of a to-be-compared paper product and a reference paper product; magnifying the first to-be-compared image, thereby acquiring a first paper pattern image; acquiring the RGB value of the first paper pattern image of the to-be-compared paper product, and acquiring the first RGB value; and acquiring the RGB value of the first paper pattern image of the reference paper product, and acquiring the second RGB value. According to the method, the first RGB value of the first paper pattern image of the to-be-compared paper product and the second RGB value of the first paper pattern image of the reference paper product are respectively acquired, and the uniqueness of the to-be-compared paper product is authenticated by judging whether the first RGB value is equal to the second RGB value, so that the problem that the uniqueness of the same type of paper products without printing numbers cannot be authenticated is solved.
Description
Technical Field
The invention relates to the field of image processing, in particular to a method and a device for authenticating uniqueness of a paper product.
Background
Paper products, such as paper money and tickets, which are distributed on the market at present are printed with unique numbers as identity IDs of the paper products so as to perform unique authentication. However, the same type of paper product without a printed number cannot be uniquely authenticated at present.
Disclosure of Invention
The invention aims to provide a method and a device for authenticating uniqueness of paper products, which aim to solve the problem that the uniqueness cannot be authenticated at present by the same type of paper products without printed numbers.
The invention is realized by the following steps:
in a first aspect, an embodiment of the present invention provides a method for authenticating uniqueness of a paper product, which is applied to an authentication apparatus for authenticating uniqueness of a paper product, and the method includes:
respectively obtaining first images to be compared of first same areas of a paper product to be compared and a reference paper product, wherein the paper product to be compared and the reference paper product have the same content and shape;
amplifying the first image to be compared to obtain a first paper line image;
acquiring the RGB value of the first paper texture image of the paper product to be compared to obtain a first RGB value, and acquiring the RGB value of the first paper texture image of the reference paper product to obtain a second RGB value;
and comparing the first RGB value with the second RGB value, and when the first RGB value is not equal to the second RGB value, judging that the paper product to be compared has uniqueness.
With reference to the first aspect, an embodiment of the present invention provides a first possible implementation manner of the first aspect, where the method for authenticating uniqueness of a paper product further includes:
when the first RGB value and the second RGB value are equal, respectively obtaining a second image to be compared of a second same area of the paper product to be compared and the reference paper product;
amplifying the second image to be compared to obtain a second paper texture image;
acquiring the RGB value of the second paper texture image of the paper product to be compared to obtain a third RGB value, and acquiring the RGB value of the second paper texture image of the reference paper product to obtain a fourth RGB value;
and when the third RGB value and the fourth RGB value are not equal, judging that the paper product to be compared has uniqueness.
With reference to the first aspect, an embodiment of the present invention provides a second possible implementation manner of the first aspect, where the enlarging the first image to be compared to obtain a first paper grain image includes:
acquiring an image amplification rule and an amplification factor;
and amplifying the first image to be compared according to the image amplification rule and the amplification factor to obtain the first paper grain image.
With reference to the first possible implementation manner of the first aspect, an embodiment of the present invention provides a third possible implementation manner of the first aspect, where the enlarging the second image to be compared to obtain a second paper grain image includes:
acquiring an image amplification rule and an amplification factor;
and amplifying the second image to be compared according to the image amplification rule and the amplification factor to obtain a second paper texture image.
With reference to the first aspect, an embodiment of the present invention provides a fourth possible implementation manner of the first aspect, where the obtaining the first images to be compared of the first identical area of the paper product to be compared and the reference paper product respectively includes:
and respectively obtaining first images to be compared of the paper products to be compared and the reference paper products in the same coordinate range in a pre-established coordinate system.
In a second aspect, an embodiment of the present invention provides an authentication apparatus for uniqueness of a paper product, including:
the device comprises a first to-be-compared image obtaining unit, a second to-be-compared image obtaining unit and a comparison unit, wherein the first to-be-compared image obtaining unit is used for respectively obtaining a paper product to be compared and a first to-be-compared image of a first same area of a reference paper product, and the contents and the shapes of the paper product to be compared and the reference paper product are the same;
the first paper line image obtaining unit is used for amplifying the first image to be compared to obtain a first paper line image;
a first image RGB value obtaining unit, configured to obtain RGB values of the first paper grain image of the paper product to be compared, obtain a first RGB value, obtain RGB values of the first paper grain image of the reference paper product, and obtain a second RGB value;
and the first RGB value comparison unit is used for comparing the first RGB value with the second RGB value, and when the first RGB value and the second RGB value are not equal, the paper product to be compared is judged to have uniqueness.
With reference to the second aspect, an embodiment of the present invention provides a first possible implementation manner of the second aspect, where the authentication device for uniqueness of a paper product further includes:
the second image to be compared obtaining unit is used for respectively obtaining second images to be compared of second same areas of the paper product to be compared and the reference paper product when the first RGB value and the second RGB value are equal;
a second paper line image obtaining unit, configured to amplify the second image to be compared to obtain a second paper line image;
a second image RGB value obtaining unit, configured to obtain RGB values of the second paper grain image of the paper product to be compared, obtain a third RGB value, obtain RGB values of the second paper grain image of the reference paper product, and obtain a fourth RGB value;
and the second RGB value comparison unit is used for comparing the third RGB value with the fourth RGB value, and when the third RGB value is not equal to the fourth RGB value, the paper product to be compared is judged to have uniqueness.
With reference to the second aspect, an embodiment of the present invention provides a second possible implementation manner of the second aspect, where the first paper grain image obtaining unit includes:
the first image amplification parameter obtaining subunit is used for obtaining an image amplification rule and an amplification factor;
and the first image amplification subunit is used for amplifying the first image to be compared according to the image amplification rule and the amplification factor to obtain the first paper line image.
With reference to the first possible implementation manner of the second aspect, an embodiment of the present invention provides a third possible implementation manner of the second aspect, where the second paper grain image obtaining unit includes:
the second image amplification parameter obtaining subunit is used for obtaining an image amplification rule and an amplification factor;
and the second image amplification subunit is used for amplifying the second image to be compared according to the image amplification rule and the amplification factor to obtain the second paper line image.
With reference to the second aspect, an embodiment of the present invention provides a fourth possible implementation manner of the second aspect, where the first to-be-compared image obtaining unit includes:
an image coordinate creating subunit, configured to create a coordinate system in advance;
and the image capturing subunit is used for respectively obtaining the first images to be compared of the paper products to be compared and the first images to be compared of the reference paper products in the same coordinate range in a pre-established coordinate system.
According to the method and the device for authenticating the uniqueness of the paper product, provided by the embodiment of the invention, after the first to-be-compared image of the first same area of the paper product to be compared and the reference paper product with the same content and shape is obtained, the first to-be-compared image is amplified, and the first paper texture image of the paper product to be compared and the first paper texture image of the reference paper product are obtained. And respectively acquiring a first RGB value of the first paper texture image of the paper product to be compared and a second RGB value of the first paper texture image of the reference paper product, and authenticating the uniqueness of the paper product to be compared by judging whether the first RGB value and the second RGB value are equal, so that the problem that the uniqueness authentication cannot be performed on the paper products of the same type without printed numbers is solved.
Drawings
FIG. 1 is a flow chart of a method for authenticating the uniqueness of a paper product according to an embodiment of the invention;
FIG. 2 is a schematic diagram illustrating a principle of obtaining images of the same coordinate range in the authentication method for paper uniqueness according to an embodiment of the present invention;
fig. 3 is a block diagram of an authentication apparatus for uniqueness of a paper product according to an embodiment of the present invention;
fig. 4 is a block diagram of another authentication apparatus for paper product uniqueness according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Paper products, such as paper money and tickets, which are distributed on the market at present are printed with unique numbers as identity IDs of the paper products so as to perform unique authentication. However, the same type of paper product without a printed number cannot be uniquely authenticated at present. The inventor of the invention finds that all paper materials are made of paper pulp, paper fibers of finished products are irregularly and randomly arranged, and microscopic textures of the finally formed paper products are not identical, so that for two paper products which are identical macroscopically, namely identical in content and shape, whether the microscopic features of the two paper products are identical or not can be judged by comparing paper textures of the two paper products, namely paper patterns.
Referring to fig. 1, an authentication method for uniqueness of a paper product according to an embodiment of the present invention is applied to an authentication device for uniqueness of a paper product, and the method includes:
step S101: and respectively obtaining first images to be compared of first same areas of the paper product to be compared and the reference paper product, wherein the contents and the shapes of the paper product to be compared and the reference paper product are the same.
In practice, in order to ensure the effectiveness of image comparison, images of the same areas in the paper product to be compared and the reference paper product need to be acquired respectively to serve as a first image to be compared, and the paper product to be compared and the reference paper product are paper products with completely the same content and shape, for example, two identical stamps, grain tickets, or calligraphy and painting. And in order to facilitate image comparison, a microscopic camera can be adopted for image acquisition.
For example, the parts with the same pattern or character in the paper product to be compared and the reference paper product can be obtained as the first image to be compared, for example, characters of national general grain tickets are printed on two identical grain tickets, in the practical process, the image of the full word in the paper product to be compared can be captured as the first image to be compared of the paper product to be compared, and correspondingly, the image of the full word in the reference image can be captured as the first image to be compared of the paper product to be compared.
In addition, images of the same area may also be obtained by acquiring images of the same coordinate range. As shown in fig. 2, the whole image of the paper product to be compared is loaded into a pre-established image coordinate system, four coordinate points a (x1, y1), B (x2, y1), C (x1, y2) and D (x2, y2) are determined, wherein x1 is smaller than x2, and y1 is smaller than y2, then the quadrangle surrounded by the points ABCD is the first image to be detected of the paper product to be compared, correspondingly, the whole image of the reference paper product is loaded into the pre-established image coordinate system, and the quadrangle surrounded by the same intercept ABCD is the first image to be detected of the reference paper product.
Step S102: and amplifying the first image to be compared to obtain a first paper texture image. After the first image to be compared of the image to be detected and the first image to be compared of the reference image are obtained, the first image to be compared of the image to be detected and the first image to be compared of the reference image are amplified respectively, so that the first paper line image of the image to be detected and the first paper line image of the reference image can be obtained conveniently. In the practical process, the amplification method and the amplification factor of the image can be determined according to the actual situation, and in the practical process, through continuous research of the inventor, the inventor finds that the paper product with obvious paper texture, such as rice paper, can adopt smaller amplification factor, such as eighty times; for some paper products produced by secondary pulp, such as copy paper, with less distinct paper lines, a larger magnification factor, such as one hundred twenty times, may be used.
Step S103: and acquiring the RGB value of the first paper texture image of the paper product to be compared to obtain a first RGB value, and acquiring the RGB value of the first paper texture image of the reference paper product to obtain a second RGB value.
After obtaining the first paper grain image of the paper product to be compared and the first paper grain image of the reference paper product, in order to compare whether the first paper grain image of the paper product to be compared and the first paper grain image of the reference paper product are the same, it is necessary to obtain the RGB values of the first paper grain image of the paper product to be compared and the RGB values of the first paper grain image of the reference paper product, respectively.
Step S104: and comparing the first RGB value with the second RGB value, and when the first RGB value is not equal to the second RGB value, judging that the paper product to be compared has uniqueness.
In practice, when the first RGB value and the second RGB value are equal, in order to further accurately authenticate the uniqueness of the paper product to be compared, as a preferred mode, second images to be compared in a second same area of the paper product to be compared and a reference paper product may be obtained and compared, that is, the method for authenticating the uniqueness of the paper product further includes:
when the first RGB value and the second RGB value are equal, respectively obtaining a second image to be compared of a second same area of the paper product to be compared and the reference paper product;
amplifying the second image to be compared to obtain a second paper texture image;
acquiring the RGB value of the second paper texture image of the paper product to be compared to obtain a third RGB value, and acquiring the RGB value of the second paper texture image of the reference paper product to obtain a fourth RGB value;
and when the third RGB value and the fourth RGB value are not equal, judging that the paper product to be compared has uniqueness.
It should be noted that the principle of the technical solution in the above-mentioned further authentication process is the same as that of the foregoing method, and reference may be made to the description of the foregoing method where the same is true.
In the practical process, in order to facilitate data storage of the paper product to be compared, which is subjected to uniqueness authentication, as an optimal mode, the paper product to be compared, which is subjected to uniqueness authentication, can be numbered according to the type, the authentication date, the RGB value and the like of the paper product to be compared, and the number and the paper product to be compared are stored in a database, and an association relationship between the number and the paper grain characteristics of the paper product to be compared is created, so as to facilitate later verification. The creation of relational databases and data entry are prior art and will not be described in detail herein.
According to the method for authenticating the uniqueness of the paper product, provided by the embodiment of the invention, after the first to-be-compared images of the paper product to be compared and the reference paper product in the first same area with the same content and shape are obtained, the first to-be-compared image is amplified, and the first paper texture image of the paper product to be compared and the first paper texture image of the reference paper product are obtained. And respectively acquiring a first RGB value of the first paper texture image of the paper product to be compared and a second RGB value of the first paper texture image of the reference paper product, and authenticating the uniqueness of the paper product to be compared by judging whether the first RGB value and the second RGB value are equal, so that the problem that the uniqueness authentication cannot be performed on the paper products of the same type without printed numbers is solved.
Referring to fig. 3, the authentication device for uniqueness of paper products according to the embodiment of the present invention is implemented by the same principle and effect as the method according to the foregoing embodiment, and reference may be made to the corresponding parts of the method according to the foregoing embodiment without reference to the details of the embodiment of the present invention. The device comprises a first image to be compared obtaining unit 201, a first paper texture image obtaining unit 202, a first image RGB value obtaining unit 203 and a first RGB value comparing unit 204. Wherein,
the first to-be-compared image obtaining unit 201 is configured to obtain first to-be-compared images of a paper product to be compared and a first identical area of a reference paper product, where the paper product to be compared and the reference paper product have identical contents and shapes.
The first to-be-compared image obtaining unit 201 includes:
an image coordinate creating subunit, configured to create a coordinate system in advance;
and the image capturing subunit is used for respectively obtaining the first images to be compared of the paper products to be compared and the first images to be compared of the reference paper products in the same coordinate range in a pre-established coordinate system.
The first paper grain image obtaining unit 202 is configured to amplify the first image to be compared to obtain a first paper grain image.
The first paper texture image obtaining unit 202 includes
The first image amplification parameter obtaining subunit is used for obtaining an image amplification rule and an amplification factor;
and the first image amplification subunit is used for amplifying the first image to be compared according to the image amplification rule and the amplification factor to obtain the first paper line image.
The first image RGB value obtaining unit 203 is configured to obtain RGB values of the first paper grain image of the paper product to be compared, obtain a first RGB value, obtain RGB values of the first paper grain image of the reference paper product, and obtain a second RGB value.
The first RGB value comparing unit 204 is configured to compare the first RGB value with the second RGB value, and when the first RGB value is not equal to the second RGB value, determine that the paper product to be compared has uniqueness.
In practice, when the first RGB value and the second RGB value are equal, in order to further accurately authenticate the uniqueness of the paper product to be compared, as a preferred mode, second images to be compared of second identical areas of the paper product to be compared and the reference paper product may be obtained and compared, that is, the uniqueness authentication apparatus for paper product further includes:
and the second image to be compared obtaining unit is used for respectively obtaining second images to be compared of second same areas of the paper product to be compared and the reference paper product when the first RGB value and the second RGB value are equal.
A second paper line image obtaining unit, configured to amplify the second image to be compared to obtain a second paper line image;
the second paper grain image obtaining unit includes:
the second image amplification parameter obtaining subunit is used for obtaining an image amplification rule and an amplification factor;
and the second image amplification subunit is used for amplifying the second image to be compared according to the image amplification rule and the amplification factor to obtain the second paper line image.
A second image RGB value obtaining unit, configured to obtain RGB values of the second paper grain image of the paper product to be compared, obtain a third RGB value, obtain RGB values of the second paper grain image of the reference paper product, and obtain a fourth RGB value;
and the second RGB value comparison unit is used for comparing the third RGB value with the fourth RGB value, and when the third RGB value is not equal to the fourth RGB value, the paper product to be compared is judged to have uniqueness.
According to the authentication device for the uniqueness of the paper product, provided by the embodiment of the invention, after the first to-be-compared image of the first same area of the paper product to be compared and the reference paper product with the same content and shape is obtained, the first to-be-compared image is amplified, and the first paper texture image of the paper product to be compared and the first paper texture image of the reference paper product are obtained. And respectively acquiring a first RGB value of the first paper texture image of the paper product to be compared and a second RGB value of the first paper texture image of the reference paper product, and authenticating the uniqueness of the paper product to be compared by judging whether the first RGB value and the second RGB value are equal, so that the problem that the uniqueness authentication cannot be performed on the paper products of the same type without printed numbers is solved.
Referring to fig. 4, another authentication apparatus 500 for uniqueness of a paper product according to an embodiment of the present invention includes: the system comprises a processor 501, a memory 502, a bus 503 and a communication interface 504, wherein the processor 501, the communication interface 504 and the memory 502 are connected through the bus 503; the processor 501 is arranged to execute executable modules, such as computer programs, stored in the memory 502.
The Memory 502 may include a high-speed Random Access Memory (RAM) and may also include a non-volatile Memory (non-volatile Memory), such as at least one disk Memory. The communication connection between the network element of the system and at least one other network element is realized through at least one communication interface 504 (which may be wired or wireless), and the internet, a wide area network, a local network, a metropolitan area network, and the like can be used.
Bus 503 may be an ISA bus, PCI bus, EISA bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one double-headed arrow is shown in FIG. 4, but that does not indicate only one bus or one type of bus.
The memory 502 is used for storing a program, the processor 501 executes the program after receiving an execution instruction, and the method executed by the apparatus defined by the flow process disclosed in any of the foregoing embodiments of the present invention may be applied to the processor 501, or implemented by the processor 501.
The processor 501 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 501. The Processor 501 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 502, and the processor 501 reads the information in the memory 502 and completes the steps of the method in combination with the hardware.
It should be noted that the apparatus provided in the embodiment of the present invention has the same implementation principle and the same technical effect as the foregoing method embodiment, and for the sake of brief description, reference may be made to the corresponding content in the foregoing method embodiment for the part where the apparatus embodiment is not mentioned.
It should be noted that, in the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the unit is only a logical division, and other divisions may be realized in practice.
It should be noted that the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment. In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method for authenticating the uniqueness of a paper product is applied to an authentication device for authenticating the uniqueness of the paper product, and the method comprises the following steps:
respectively obtaining first images to be compared of first same areas of a paper product to be compared and a reference paper product, wherein the paper product to be compared and the reference paper product have the same content and shape;
amplifying the first image to be compared to obtain a first paper line image;
acquiring the RGB value of the first paper texture image of the paper product to be compared to obtain a first RGB value, and acquiring the RGB value of the first paper texture image of the reference paper product to obtain a second RGB value;
and comparing the first RGB value with the second RGB value, and when the first RGB value is not equal to the second RGB value, judging that the paper product to be compared has uniqueness.
2. The method of authenticating the uniqueness of the paper product as recited in claim 1, further comprising:
when the first RGB value and the second RGB value are equal, respectively obtaining a second image to be compared of a second same area of the paper product to be compared and the reference paper product;
amplifying the second image to be compared to obtain a second paper texture image;
acquiring the RGB value of the second paper texture image of the paper product to be compared to obtain a third RGB value, and acquiring the RGB value of the second paper texture image of the reference paper product to obtain a fourth RGB value;
and when the third RGB value and the fourth RGB value are not equal, judging that the paper product to be compared has uniqueness.
3. The method for authenticating uniqueness of paper products as claimed in claim 1, wherein the enlarging the first image to be compared to obtain a first paper grain image comprises:
acquiring an image amplification rule and an amplification factor;
and amplifying the first image to be compared according to the image amplification rule and the amplification factor to obtain the first paper grain image.
4. The method of claim 2, wherein the magnifying the second image to be compared to obtain a second paper print image comprises:
acquiring an image amplification rule and an amplification factor;
and amplifying the second image to be compared according to the image amplification rule and the amplification factor to obtain a second paper texture image.
5. The method of authenticating uniqueness of paper products as recited in claim 1, wherein the obtaining the first to-be-compared images of the first identical area of the paper product to be compared and the reference paper product respectively comprises:
and respectively obtaining first images to be compared of the paper products to be compared and the reference paper products in the same coordinate range in a pre-established coordinate system.
6. An authentication device for uniqueness of a paper product, comprising:
the device comprises a first to-be-compared image obtaining unit, a second to-be-compared image obtaining unit and a comparison unit, wherein the first to-be-compared image obtaining unit is used for respectively obtaining a paper product to be compared and a first to-be-compared image of a first same area of a reference paper product, and the contents and the shapes of the paper product to be compared and the reference paper product are the same;
the first paper line image obtaining unit is used for amplifying the first image to be compared to obtain a first paper line image;
a first image RGB value obtaining unit, configured to obtain RGB values of the first paper grain image of the paper product to be compared, obtain a first RGB value, obtain RGB values of the first paper grain image of the reference paper product, and obtain a second RGB value;
and the first RGB value comparison unit is used for comparing the first RGB value with the second RGB value, and when the first RGB value and the second RGB value are not equal, the paper product to be compared is judged to have uniqueness.
7. The apparatus of claim 6, further comprising:
the second image to be compared obtaining unit is used for respectively obtaining second images to be compared of second same areas of the paper product to be compared and the reference paper product when the first RGB value and the second RGB value are equal;
a second paper line image obtaining unit, configured to amplify the second image to be compared to obtain a second paper line image;
a second image RGB value obtaining unit, configured to obtain RGB values of the second paper grain image of the paper product to be compared, obtain a third RGB value, obtain RGB values of the second paper grain image of the reference paper product, and obtain a fourth RGB value;
and the second RGB value comparison unit is used for comparing the third RGB value with the fourth RGB value, and when the third RGB value is not equal to the fourth RGB value, the paper product to be compared is judged to have uniqueness.
8. The apparatus for authenticating uniqueness of paper products according to claim 6, wherein the first paper grain image obtaining unit includes:
the first image amplification parameter obtaining subunit is used for obtaining an image amplification rule and an amplification factor;
and the first image amplification subunit is used for amplifying the first image to be compared according to the image amplification rule and the amplification factor to obtain the first paper line image.
9. The apparatus for authenticating uniqueness of paper products according to claim 7, wherein the second paper grain image obtaining unit includes:
the second image amplification parameter obtaining subunit is used for obtaining an image amplification rule and an amplification factor;
and the second image amplification subunit is used for amplifying the second image to be compared according to the image amplification rule and the amplification factor to obtain the second paper line image.
10. The apparatus for authenticating uniqueness of paper products according to claim 6, wherein the first to-be-compared image obtaining unit includes:
an image coordinate creating subunit, configured to create a coordinate system in advance;
and the image capturing subunit is used for respectively obtaining the first images to be compared of the paper products to be compared and the first images to be compared of the reference paper products in the same coordinate range in a pre-established coordinate system.
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| CN110136317A (en) * | 2018-02-05 | 2019-08-16 | 任朝荣 | Papery voucher authentication information production method, device and distinguishing method between true and false, device and system |
| CN112365487A (en) * | 2020-11-20 | 2021-02-12 | 中国邮政集团有限公司广州市分公司 | Stamp identification method, system, device and storage medium |
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