CN111766254A - Paper detection method and device and computer readable storage medium - Google Patents
Paper detection method and device and computer readable storage medium Download PDFInfo
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- CN111766254A CN111766254A CN201910264616.2A CN201910264616A CN111766254A CN 111766254 A CN111766254 A CN 111766254A CN 201910264616 A CN201910264616 A CN 201910264616A CN 111766254 A CN111766254 A CN 111766254A
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
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Abstract
The invention discloses a paper detection method, which is applied to a paper detection device, wherein the paper detection device is provided with a light source and an image acquisition module, and the paper detection method comprises the following steps: acquiring identification information of paper, and acquiring a transmission image of light emitted by a light source after the light penetrates through the paper according to the identification information; extracting a target natural texture of the paper from the transmission image, and determining a preset texture corresponding to the paper according to the identification information; judging whether the target natural texture is matched with a preset texture or not; and when the target natural texture is matched with the preset texture, judging that the article corresponding to the paper is a genuine article. The invention also discloses a paper detection device and a computer readable storage medium. The invention effectively discriminates the authenticity of the article.
Description
Technical Field
The present invention relates to the field of image processing technologies, and in particular, to a paper detection apparatus and method, and a computer-readable storage medium.
Background
At present, in order to enable consumers to accurately judge the authenticity of products and protect the products from being counterfeited, production enterprises generally adopt a technical means of adding an anti-counterfeit label on product packages.
However, because the existing anti-counterfeit label technology generally has the defect of easy imitation, a counterfeiter uses the enterprise anti-counterfeit label on counterfeit and shoddy goods by copying and embezzling a large amount of labels, so that the brand image of a production enterprise is damaged, and the benefit of a consumer is seriously damaged. That is, in the prior art, the true and false of the article can not be effectively discriminated.
Disclosure of Invention
The invention mainly aims to provide a paper detection device, a paper detection method and a computer readable storage medium, and aims to solve the problem that the authenticity of an article cannot be effectively discriminated.
In order to achieve the above object, the present invention provides a paper detection method, which is applied to a paper detection device, wherein the paper detection device is provided with a light source and an image acquisition module, and the paper detection method comprises the following steps:
acquiring identification information of paper, and acquiring a transmission image of light emitted by a light source after the light penetrates through the paper according to the identification information;
extracting a target natural texture of the paper from the transmission image, and determining a preset texture corresponding to the paper according to the identification information;
judging whether the target natural texture is matched with a preset texture or not;
and when the target natural texture is matched with the preset texture, judging that the article corresponding to the paper is a genuine article.
In an embodiment, the step of collecting the transmission image of the light source after transmitting through the paper according to the identification information includes:
determining the target luminous intensity of the light source according to the identification information;
and controlling the light source to emit light towards the paper according to the target luminous intensity so as to acquire a transmission image of the paper.
In one embodiment, the step of extracting the target natural texture of the paper from the transmission image comprises:
determining a detection area of the paper according to the identification information;
determining a target area corresponding to the detection area in the transmission image;
extracting a natural texture at the target region of the transmission image, and taking the extracted natural texture as a target natural texture.
In an embodiment, the step of acquiring the identification information corresponding to the paper includes:
scanning the graphic code in the paper;
and acquiring identification information corresponding to the paper according to the graphic code.
In an embodiment, the step of acquiring the identification information corresponding to the paper includes:
controlling the light source to emit preset light to the paper to transmit the paper;
extracting identification information in the transmitted paper.
In one embodiment, the step of determining whether the natural texture matches a preset texture includes:
and calculating the similarity between the target natural texture and the preset texture, wherein when the similarity is greater than a preset threshold value, the target natural texture is judged to be matched with the preset texture.
In one embodiment, the target natural texture includes a texture of a surface of the paper and a texture of an interior of the paper.
In an embodiment, after the step of determining that the article corresponding to the paper is a genuine article, the method further includes:
and outputting prompt information that the article corresponding to the paper is a genuine article.
In order to achieve the above object, the present invention further provides a paper sheet detection apparatus, which is provided with a light source, an image capturing module, a processor, a memory, and a paper sheet detection program stored in the memory and operable on the processor, wherein the paper sheet detection program, when executed by the processor, implements the steps of the paper sheet detection method described above.
To achieve the above object, the present invention also provides a computer-readable storage medium storing a paper sheet detection program that realizes the steps of the paper sheet detection method as described above when executed by the processor.
The invention provides a paper detection device, a paper detection method and a computer readable storage medium, wherein the paper detection device acquires identification information of paper and acquires a transmission image of light emitted by a light source after the light penetrates through the paper according to the identification information; extracting target natural textures of the paper from the transmission image, determining preset textures corresponding to the paper according to the identification information, and judging that the article corresponding to the paper is a genuine article when the target natural textures are matched with the preset textures; the natural texture of the paper for anti-counterfeiting needs to be printed on another counterfeit paper when being copied, but the texture can be generated when being printed, so that the natural texture copied on the counterfeit paper is overlapped with the texture generated by printing, the copied natural texture is invalid, the condition that illegal molecules imitate the anti-counterfeiting paper is avoided, and the paper detection device effectively discriminates the authenticity of an article through the natural texture of the paper.
Drawings
Fig. 1 is a schematic diagram of a hardware configuration of a paper sheet detection apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a first embodiment of a sheet inspection method of the present invention;
FIG. 3 is a flowchart illustrating a second embodiment of a method for inspecting paper according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main solution of the embodiment of the invention is as follows: acquiring identification information of paper, and acquiring a transmission image of light emitted by a light source after the light penetrates through the paper according to the identification information; extracting a target natural texture of the paper from the transmission image, and determining a preset texture corresponding to the paper according to the identification information; judging whether the target natural texture is matched with a preset texture or not; and when the target natural texture is matched with the preset texture, judging that the article corresponding to the paper is a genuine article.
The natural texture of the paper for anti-counterfeiting needs to be printed on another counterfeit paper when being copied, but the texture can be generated when being printed, so that the natural texture copied on the counterfeit paper is overlapped with the texture generated by printing, the copied natural texture is invalid, the condition that illegal molecules imitate the anti-counterfeiting paper is avoided, and the paper detection device effectively discriminates the authenticity of an article through the natural texture of the paper.
As an implementation, the paper detection device may be as shown in fig. 1.
The embodiment of the invention relates to a paper detection device, which comprises: a processor 101, e.g. a CPU, a memory 102, a communication bus 103, a light source 104 and an image acquisition module 105. Wherein a communication bus 103 is used for enabling the connection communication between these components.
The memory 102 may be a high-speed RAM memory or a non-volatile memory (e.g., a disk memory). As shown in fig. 1, a detection program of paper may be included in the memory 102 as a kind of computer storage medium; and the processor 101 may be configured to call the detection program for the paper stored in the memory 102 and perform the following operations:
acquiring identification information of paper, and acquiring a transmission image of light emitted by a light source after the light penetrates through the paper according to the identification information;
extracting a target natural texture of the paper from the transmission image, and determining a preset texture corresponding to the paper according to the identification information;
judging whether the target natural texture is matched with a preset texture or not;
and when the target natural texture is matched with the preset texture, judging that the article corresponding to the paper is a genuine article.
In one embodiment, the processor 101 may be configured to call a detection program for a sheet stored in the memory 102 and perform the following operations:
determining the target luminous intensity of the light source according to the identification information;
and controlling the light source to emit light towards the paper according to the target luminous intensity so as to acquire a transmission image of the paper.
In one embodiment, the processor 101 may be configured to call a detection program for a sheet stored in the memory 102 and perform the following operations:
determining a detection area of the paper according to the identification information;
determining a target area corresponding to the detection area in the transmission image;
extracting a natural texture at the target region of the transmission image, and taking the extracted natural texture as a target natural texture.
In one embodiment, the processor 101 may be configured to call a detection program for a sheet stored in the memory 102 and perform the following operations:
scanning the graphic code in the paper;
and acquiring identification information corresponding to the paper according to the graphic code.
In one embodiment, the processor 101 may be configured to call a detection program for a sheet stored in the memory 102 and perform the following operations:
controlling the light source to emit preset light to the paper to transmit the paper;
extracting identification information in the transmitted paper.
In one embodiment, the processor 101 may be configured to call a detection program for a sheet stored in the memory 102 and perform the following operations:
and calculating the similarity between the target natural texture and the preset texture, wherein when the similarity is greater than a preset threshold value, the target natural texture is judged to be matched with the preset texture.
In one embodiment, the processor 101 may be configured to call a detection program for a sheet stored in the memory 102 and perform the following operations:
the target natural texture includes the texture of the surface of the paper and the texture of the interior of the paper.
In one embodiment, the processor 101 may be configured to call a detection program for a sheet stored in the memory 102 and perform the following operations:
and outputting prompt information that the article corresponding to the paper is a genuine article.
According to the scheme, the paper detection device acquires identification information of the paper, and acquires a transmission image of the light emitted by the light source after penetrating through the paper according to the identification information; extracting target natural textures of the paper from the transmission image, determining preset textures corresponding to the paper according to the identification information, and judging that the article corresponding to the paper is a genuine article when the target natural textures are matched with the preset textures; the natural texture of the paper for anti-counterfeiting needs to be printed on another counterfeit paper when being copied, but the texture can be generated when being printed, so that the natural texture copied on the counterfeit paper is overlapped with the texture generated by printing, the copied natural texture is invalid, the condition that illegal molecules imitate the anti-counterfeiting paper is avoided, and the paper detection device effectively discriminates the authenticity of an article through the natural texture of the paper.
Based on the hardware architecture of the paper detection device, the embodiment of the paper detection method is provided.
Referring to fig. 2, fig. 2 is a first embodiment of a paper sheet inspecting method according to the present invention, which includes the steps of:
step S10, acquiring identification information of the paper, and acquiring a transmission image of the light emitted by the light source after penetrating through the paper according to the identification information;
in the invention, the execution main body is a paper detection device, and the paper detection device comprises a light source and an image acquisition module. The light source can comprise a plurality of lamp beads, and the color of light emitted by each lamp bead can be different, so that the light source can switch light with various colors, such as white light, purple light and red light, and in addition, the luminous intensity of the light source can be adjusted. The image acquisition module may be a camera.
In the present invention, paper for use as an anti-counterfeit label is attached to a commercial product. When manufacturing paper for anti-counterfeiting, unique natural textures of the paper are generated, wherein the natural textures comprise textures inside the paper and textures on the surface of the paper, and the textures inside the paper and the textures on the surface of the paper form a natural anti-counterfeiting mark. The internal texture of the paper can be obtained by transmission of light, while the texture of the paper surface can be obtained by reflection of transmitted light.
When the authenticity of the commodity needs to be verified, one surface of the paper faces the light source, and the other surface of the paper faces the image acquisition module, so that light emitted by the light source transmits the paper, and the image acquisition module acquires a transmission image of the paper.
For this reason, the paper is provided with identification information which represents a unique number of the paper, the identification information may be a number composed of at least one of numbers, symbols, letters, and figures, the identification information may be stored on a graphic code, and the graphic code may be printed or pasted on a preset area of the paper. Through the correlation of the quantity of the transmission light required by the paper and the identification information, when the paper detection device needs to verify the authenticity of a commodity attached with the paper, the quantity of the transmission light required by the paper can be determined according to the identification information, the target luminous intensity of the light source is further determined according to the quantity of the transmission light, the light source emits light to the paper according to the target luminous intensity, and the clear transmission image of the paper is acquired. In addition, paper with different thicknesses can be arranged on different types of commodities, namely, the detection device of the paper only needs to determine the type of the commodity, so that the target luminous intensity of the light source is determined according to the type of the commodity.
In one embodiment, the predetermined texture of the paper is composed of the texture inside the paper and the texture on the surface of the paper, the texture inside the paper can be obtained by transmitting light, and the texture on the surface of the paper can be obtained by reflecting the transmitted light, so the light emitting intensity of the light source needs to be controlled to determine the ratio of the reflected light to the transmitted light; the more the transmitted light is, the less the reflected light is, for this reason, when the anti-counterfeit label is made to the paper, in order to clearly display the surface texture and the internal texture of the paper, the target luminous intensity of the light source needs to be determined, and the target luminous intensity is associated with the identification information of the paper; when the detection device of the subsequent paper performs anti-counterfeiting detection on the paper, the target luminous intensity of the light source can be determined according to the identification information of the paper, so that clear target natural textures are acquired, and the target natural textures are matched and compared with preset textures conveniently.
Of course, the target luminous intensity of the light source may be determined in combination with the thickness of the paper, the surface texture of the paper, and the internal texture of the paper.
It should be noted that the image acquisition module can acquire the graphic code on the paper by the reflection principle through indoor natural light, and the graphic code can be a two-dimensional code or a bar code, so that the graphic code is identified and analyzed to obtain the identification information, that is, the detection device of the paper can acquire the identification information of the paper without controlling the light source to emit light.
In addition, the identification information can be built in the paper, the paper detection device can extract the identification information in a transmission mode, namely the detection device of the paper transmits the paper by emitting preset light through the light source so as to extract the identification information in the transmitted paper, and the preset light can be red light or purple light.
In addition, the surface of the paper is provided with identification information (first identification information) corresponding to the graphic code, and the paper is internally provided with identification information (second identification information); the detection device of the paper acquires the graphic code through the reflection principle to obtain first identification information, then determines preset light of the light source according to the first identification information, and therefore the paper is transmitted through the preset light to extract second identification information from the paper which is transmitted through the preset light, and therefore the preset texture corresponding to the paper is determined according to the second identification information.
It can be understood that when paper is used as an anti-counterfeit label of an anti-counterfeit commodity, the paper is numbered first, the number of the paper represents the unique identity of the paper, and the number is identification information; then, the paper is transmitted through a paper detection device to collect natural textures of the paper, wherein the natural textures comprise textures on the surface of the paper and textures inside the paper, the collected natural textures are used as preset textures of the paper, and the preset textures are bound with identification information; in addition, the collected natural texture is clear (the detail information of the natural texture is enough, the natural texture is judged to be clear), so that the target natural texture for matching subsequently is required to be clear, at the moment, the luminous intensity of the current light source is recorded, and then the luminous intensity is associated with the identification information; and finally, storing the associated identification information, luminous intensity and preset texture.
Step S20, extracting target natural textures of the paper from the transmission image, and determining preset textures corresponding to the paper according to the identification information;
after obtaining the transmission image of the paper, the detection device of the paper can extract natural texture in the transmission image, and the natural texture is the target natural texture.
The paper detection device stores preset textures of each paper, the preset textures are associated with the identification information, and the paper detection device can obtain the preset textures corresponding to the paper according to the identification information of the paper.
Step S30, judging whether the target natural texture is matched with a preset texture;
and step S40, when the target natural texture is matched with the preset texture, judging that the article corresponding to the paper is a genuine article.
After the preset texture of the paper is obtained, the detection device of the paper can judge whether the target natural texture is matched with the preset texture, specifically, the similarity between the target natural texture and the preset texture can be calculated, if the similarity between the target natural texture and the preset texture is greater than a preset threshold value, the target natural texture can be judged to be matched with the preset texture, and at the moment, prompt information that the article is a genuine article can be output, and the prompt information can be output in a voice mode, or displayed on the detection device of the paper, or the prompt information can be sent to a terminal associated with the detection device of the paper.
In the technical scheme provided by the embodiment, the paper detection device acquires identification information of paper, and acquires a transmission image of light emitted by the light source after the light penetrates through the paper according to the identification information; extracting target natural textures of the paper from the transmission image, determining preset textures corresponding to the paper according to the identification information, and judging that the article corresponding to the paper is a genuine article when the target natural textures are matched with the preset textures; the natural texture of the paper for anti-counterfeiting needs to be printed on another counterfeit paper when being copied, but the texture can be generated when being printed, so that the natural texture copied on the counterfeit paper is overlapped with the texture generated by printing, the copied natural texture is invalid, the condition that illegal molecules imitate the anti-counterfeiting paper is avoided, and the paper detection device effectively discriminates the authenticity of an article through the natural texture of the paper.
Referring to fig. 3, fig. 3 is a second embodiment of the detection method of the paper sheet according to the present invention, and based on the first embodiment, the step of extracting the target natural texture of the paper sheet from the transmission image in step S20 includes:
step S21, determining a detection area of the paper sheet based on the identification information;
a step S22 of determining a target area corresponding to the detection area in the transmission image;
step S23, extracting a natural texture in the target region of the transmission image, and taking the extracted natural texture as a target natural texture.
In one embodiment, the paper detection device collects the integral natural texture of the paper, and the comparison time is longer when the integral natural texture of the paper is collected for comparison; therefore, in this embodiment, the detection device for the paper only collects partial natural textures of the paper, that is, the partial natural textures of the paper serving as the anti-counterfeit label are used as preset textures, different detection areas are set for different papers to enhance the counterfeit difficulty of the anti-counterfeit label, the natural textures in the detection areas are used as the preset textures, and information of the detection areas, the preset textures and identification information corresponding to the preset textures are associated.
After the detection device of the paper obtains the identification information, the detection area of the paper can be determined according to the identification information, and each point on the transmission image of the paper corresponds to each point on the paper one by one, so that a target area (the target area is a projection area of the detection area) corresponding to the detection area can be determined in the transmission image, and a natural texture is extracted from the target area, wherein the natural texture is the target natural texture, therefore, whether the target natural texture has a matched preset texture or not is judged, and if the target natural texture is matched with the preset texture, an article corresponding to the paper is a genuine article.
In the technical scheme provided by this embodiment, after the detection device for the paper obtains the identification information of the paper, the detection area of the paper can be determined according to the identification information, so that the target area corresponding to the detection area is determined in the transmission image, the target natural texture is extracted from the target area, the target natural texture is compared with the preset texture, and the counterfeit difficulty of the anti-counterfeit label is increased.
The invention also provides a paper detection device, which is provided with a light source, an image acquisition module, a processor, a memory and a paper detection program stored on the memory and capable of running on the processor, wherein the paper detection program is executed by the processor to realize the steps of the paper detection method in the embodiment.
The present invention also provides a computer-readable storage medium storing a paper sheet detection program that, when executed by the processor, implements the steps of the paper sheet detection method according to the above embodiment.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a computer-readable storage medium (such as ROM/RAM, magnetic disk, optical disk) as described above, and includes several instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The paper detection method is applied to a paper detection device, the paper detection device is provided with a light source and an image acquisition module, and the paper detection method comprises the following steps:
acquiring identification information of paper, and acquiring a transmission image of light emitted by a light source after the light penetrates through the paper according to the identification information;
extracting a target natural texture of the paper from the transmission image, and determining a preset texture corresponding to the paper according to the identification information;
judging whether the target natural texture is matched with a preset texture or not;
and when the target natural texture is matched with the preset texture, judging that the article corresponding to the paper is a genuine article.
2. The paper detection method of claim 1, wherein the step of collecting the transmission image of the light source after transmitting through the paper according to the identification information comprises:
determining the target luminous intensity of the light source according to the identification information;
and controlling the light source to emit light towards the paper according to the target luminous intensity so as to acquire a transmission image of the paper.
3. The method for inspecting paper according to claim 1, wherein said step of extracting the target natural texture of the paper from the transmission image comprises:
determining a detection area of the paper according to the identification information;
determining a target area corresponding to the detection area in the transmission image;
extracting a natural texture at the target region of the transmission image, and taking the extracted natural texture as a target natural texture.
4. The paper detection method of claim 1, wherein the step of acquiring the identification information corresponding to the paper comprises:
scanning the graphic code in the paper;
and acquiring identification information corresponding to the paper according to the graphic code.
5. The paper detection method of claim 1, wherein the step of acquiring the identification information corresponding to the paper comprises:
controlling the light source to emit preset light to the paper to transmit the paper;
extracting identification information in the transmitted paper.
6. The paper sheet detection method according to claim 1, wherein the step of determining whether the natural texture matches a preset texture comprises:
and calculating the similarity between the target natural texture and the preset texture, wherein when the similarity is greater than a preset threshold value, the target natural texture is judged to be matched with the preset texture.
7. The method for inspecting paper according to any of claims 1 to 6, wherein the target natural texture includes a texture of a surface of the paper and a texture of an interior of the paper.
8. The method for inspecting paper sheets according to any of claims 1 to 6, wherein the step of determining that the article corresponding to the paper sheet is a genuine article further comprises:
and outputting prompt information that the article corresponding to the paper is a genuine article.
9. A paper sheet detection apparatus, characterized in that the paper sheet detection apparatus is provided with a light source, an image acquisition module, a processor, a memory and a paper sheet detection program stored on the memory and executable on the processor, the paper sheet detection program, when executed by the processor, implementing the steps of the paper sheet detection method according to any one of claims 1-8.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a paper detection program that realizes the steps of the paper detection method according to any one of claims 1 to 8 when executed by the processor.
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| CN201910264616.2A CN111766254A (en) | 2019-04-01 | 2019-04-01 | Paper detection method and device and computer readable storage medium |
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| CN201910264616.2A CN111766254A (en) | 2019-04-01 | 2019-04-01 | Paper detection method and device and computer readable storage medium |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023142183A1 (en) * | 2022-01-29 | 2023-08-03 | 浙江大学 | Method and apparatus for generating digital rights proof of physical artwork |
| CN116978003A (en) * | 2023-09-22 | 2023-10-31 | 支付宝(杭州)信息技术有限公司 | Texture detection processing method and device for food material commodity |
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