CN111882746A - Porcelain product body copyright protection method embedded with invisible identification image - Google Patents
Porcelain product body copyright protection method embedded with invisible identification image Download PDFInfo
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- CN111882746A CN111882746A CN202010748297.5A CN202010748297A CN111882746A CN 111882746 A CN111882746 A CN 111882746A CN 202010748297 A CN202010748297 A CN 202010748297A CN 111882746 A CN111882746 A CN 111882746A
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- 229910052573 porcelain Inorganic materials 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 38
- 230000000694 effects Effects 0.000 claims abstract description 11
- 239000002131 composite material Substances 0.000 claims description 59
- 238000001354 calcination Methods 0.000 claims description 42
- 239000002344 surface layer Substances 0.000 claims description 30
- 239000003086 colorant Substances 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 13
- 238000002955 isolation Methods 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000003837 high-temperature calcination Methods 0.000 claims description 6
- 239000010410 layer Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 230000004927 fusion Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000003672 processing method Methods 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/003—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using security elements
- G07D7/0034—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using security elements using watermarks
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Abstract
A porcelain product body copyright protection method for embedding invisible identification images comprises the steps of embedding the copyright identification images into a porcelain work body with copyright, forming the invisible images to be hidden on the surface of porcelain, observing the embedded position through auxiliary equipment, judging whether works or products have copyright information according to whether the invisible images can be obtained or not, and judging whether the works or the products have the copyright or not according to whether the works or the products have the copyright information, wherein the copyright identification images used by the method are portraits or LOGO of copyright owners, so that transmitted information is clear and intuitive, and the observation method is simple and clear at a glance; the invisible image is attached to the porcelain body and can not be separated; the invisible image is invisible to eyes, has copy resistance and high reliability of identification conclusion. The method can effectively solve the problem of copyright infringement identification of the artware such as the porcelain, is suitable for porcelain works or products with different processes, different types, different shapes, different curved surfaces and different sizes, and does not influence the effect due to the difference of the shapes, the curved surfaces and the sizes.
Description
Technical Field
The invention discloses a porcelain product body copyright protection method embedded with an invisible identification image, and belongs to the field of porcelain product body copyright protection methods.
Background
Copyright infringement problems occur at times, and the fields of porcelain crafts and porcelain living goods are no exception. The porcelain industry is an creative industry, the artistic creative is the maximum value of the porcelain industry, but the copyright infringement seriously infringes the interests of originators, and the normal development of the industry is restricted. In order to solve the problem, the industry starts to implement a copyright registration system of porcelain works, and non-copyright owners are prohibited from plagiarizing works or products of other people, and the implementation of the system can inhibit the spread of copyright infringement phenomenon. However, infringement still cannot be completely prohibited due to the openness of the market, and one of the main problems is that effective identification of the copyright of the porcelain works cannot be performed. It is common practice to apply anti-counterfeiting technical measures to the packaging of the works or products, which is expected to be protective, but the protective effect is limited because the packaging is separable from the body of the work or product.
To better address such problems, some researchers have proposed solutions to the use of watermarking technology. The watermark is applied on the image by taking the art image attached to the surface of the porcelain as a base, and whether the watermark can be successfully extracted is taken as a mark for judging whether the porcelain has copyright or not. However, in this method, the balance between the effectiveness of extracting the watermark and the copy resistance of the watermark needs to be considered, so that on one hand, effective extraction of watermark information needs to be satisfied, and on the other hand, copy resistance needs to be considered, and both requirements are mutually exclusive and difficult to be considered. On the other hand, in actual operation, the robustness of the watermark extraction algorithm is also challenged due to the individual difference of the colors presented by the high-temperature ink in the calcining process. Therefore, the technical scheme is not successfully put into practical application. It should be noted that the patterns of the partial porcelain works or products are randomly generated and not manually designed in advance, so that the watermark algorithm cannot be applied on the patterns in advance. Such as jun porcelain, the pattern formed by the jun porcelain during calcination is random and unknown.
Disclosure of Invention
The invention is realized by the following technical scheme: a porcelain product body copyright protection method embedded with invisible identification images comprises the following steps:
step S1, determining a surface layer image and designing a copyright identification image;
step S2, making the surface layer image and the copyright identification image into a composite image, and in the composite image, visually hiding the copyright identification image;
step S3, making the composite image into stained paper by printing;
step S4, pasting stained paper on the surface of the porcelain;
step S5, calcining the porcelain with the stained paper, wherein in the calcining process, the composite image ink on the stained paper is fused with the surface of the porcelain, and finally, the composite image is firmly attached to the porcelain body and cannot be separated, so that an unremovable composite image is formed;
step S6, adopting a discrimination device to read the composite image on the porcelain;
step S7, manually observing whether the identification device presents the copyright identification image hidden in the composite image, or automatically judging whether the copyright identification image exists by the image identification software in the identification device, and giving out the judgment result;
step S8, if there is no copyright identification image, the copyright infringement is suspected;
and step S9, if the copyright identification image exists, the copyright infringement is not suspected.
Further, the manufacturing method comprises the following steps:
the image composition is automatically realized by a computer by adopting a composition algorithm, and before composition, the copyright identification image and the image data of the surface layer image are read into the computer;
overlapping the copyright identification image and the surface layer image, respectively processing the overlapped parts of the two images, and representing the copyright identification image in an A-class image channel by adopting infrared sensitive color; representing the surface layer image in a B-type image channel by adopting primary-color metamerism colors, and performing metamerism color conversion of overlapped colors on the overlapped part so as to eliminate the influence of superposition of copyright identification images on color value deviation of the composite image;
the A-type image channel is provided with one or more independent image channels, and when the A-type image channel is required to be sensitive to a plurality of infrared lights with different wavelengths, the A-type image channel is additionally provided with the independent image channels;
when two infrared sensitive colors that separate wavelengths greater than X4 are used, two different latent images can be hidden; when two invisible images are hidden, cancellation processing and metamerism color conversion are carried out according to the superposed images of the two invisible images;
the B-type image channel is provided with one or more independent image channels, the finally formed image color is close to the primary color of the original surface layer image through the allocation of different primary color colors of a plurality of channels, and the color allocation adopts a public common metamerism color model;
the comprehensive gray value X5 of the A-channel image is adjustable, the starting point of the gray value which can be effectively presented by the printing screen dots is the lower limit of X5, and the overall composite image and the harmony of the peripheral colors of the overall composite image, the hiding performance of the invisible image and the presentation effect of the copyright identification image are balanced and are all optimal by adjusting the comprehensive gray value;
and storing the generated composite image as a computer image file in a CMYK + special channel mode, wherein during storage, corresponding relations exist among the A-type image channel, the B-type image channel and the CMYK + special channel.
Further, step S3 includes the following sub-steps:
step S31, the surface layer image in the composite image is a two-dimensional code or a seal image, when the surface layer image is attached to the independent space at the bottom of the porcelain, stained paper is independently made, and the stained paper is unrelated to other position images of the porcelain; the two-dimensional code or the stamp image can be monochrome or color;
step S32, the surface layer image in the composite image is a local pattern in the porcelain art design pattern, and the whole pattern is made into stained paper with a complete pattern;
step S33, reading out the composite image data from the composite image file, converting the CMYK + special channels into channel data of two different processing methods of an A-type image channel and a B-type image channel according to the corresponding relation, and respectively printing on stained paper by using stained paper ink;
step S34, for the A-type image channel and the B-type image channel, an isolation layer is needed to be used for isolation between the ink of the A-type image channel and the ink of the B-type image channel during printing, so as to avoid the mutual color interference caused by the melting of the ink during calcination and influence on the original design effect; in the A-type channel, if two different invisible images need to be formed, the respective channels of the two invisible images also need to be isolated; isolation is achieved by adding an isolation oil layer;
step S35, selecting low-temperature, medium-temperature and high-temperature printing ink and stained paper base materials with different temperature value sections according to different color values of the composite image, and manufacturing the low-temperature, medium-temperature and high-temperature stained paper to balance the reduction degree of the image quality and the fusion firmness of the printing ink and the porcelain body;
step S36, the temperature of the printing ink and the stained paper refers to the calcining temperature, the medium temperature is 800 ℃ and the high temperature is more than 100O ℃, and when the low-temperature stained paper is adopted, the low-temperature stained paper is 300 ℃ and 150 ℃;
step S37, the stained paper is printed by adopting a silk screen or flat plate mode of more than X6 meshes to ensure the stable quality of the invisible images, and when two invisible images need to be formed, the stained paper is printed by adopting a silk screen or flat plate mode of more than X7 meshes;
and step S38, the stained paper printing adopts common stained paper printing ink and does not adopt special invisible printing ink.
Further, the calcination method comprises:
the manufactured stained paper is attached to the surface of the porcelain, and the image on the stained paper is integrated with the porcelain and can not be separated through calcination, so that the body attachment of a composite image (including a copyright identification image) on the porcelain is realized;
the stained paper is attached to a non-glazed surface, or attached to a glazed surface after glazing and drying;
the calcination process is completed by one-time calcination in the process of calcination of the porcelain for the high-temperature stained paper; for the medium-temperature stained paper, the calcination is completed once in the process of the calcination of the porcelain, or the secondary calcination is carried out after the high-temperature calcination is completed; for the low-temperature stained paper, secondary calcination is required after high-temperature calcination is finished.
Furthermore, the identification equipment comprises a mobile terminal and an infrared camera device with X1 nanometer wavelength, when in identification, the infrared camera device collects images and transmits the images to the mobile terminal, and when two invisible images are hidden, two infrared light sections with different wavelengths are adopted for respective observation.
Furthermore, the reduction of the color contrast of the black and white code elements of the two-dimensional code in the composite image caused by the composition can be controlled to be below X2 percent, so that the color contrast is far higher than a threshold value X3 required by the normal identification of the two-dimensional code, and the normal identification of the two-dimensional code is not influenced.
Further, the copyright identification image is an image of a producer, a production unit, or the like of the work (such as a portrait of an author, a LOGO, or the like).
Furthermore, the copyright identification image can also be a digital code or a character code, when the copyright identification image is a code, the invisible code of one object and one code of the porcelain works can be realized, and different individuals of the same kind of works can have different codes.
Furthermore, the invention is suitable for works or products with different processes, different shapes, different curved surfaces and different sizes, and the effect is not influenced by the difference of the shapes, the curved surfaces and the sizes.
The invention has the beneficial effects that: the copyright identification image is placed in a porcelain work body with copyright to form an invisible image hidden on the surface of the porcelain, the placed position is observed through auxiliary equipment, whether works or products have copyright information or not can be judged according to whether the invisible image can be obtained or not, whether the works or products have the copyright or not is judged according to whether the works or products have the copyright identification image information or not, the copyright identification image used in the method is a portrait or LOGO of a copyright owner, transmitted information is clear and intuitive, and the observation method is simple and clear at a glance; the invisible image is attached to the porcelain body and can not be separated; the invisible image is invisible to eyes, has copy resistance and high reliability of identification conclusion. The method can effectively solve the problem of copyright infringement identification of the artware such as the porcelain, is suitable for porcelain works or products with different processes, different types, different shapes, different curved surfaces and different sizes, and does not influence the effect due to the difference of the shapes, the curved surfaces and the sizes.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic flow structure diagram of the porcelain product body copyright protection method embedded with invisible identification images.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Referring to fig. 1, the present invention provides a porcelain product body copyright protection method with invisible identification images, comprising: the method comprises the following steps:
step S1, determining a surface layer image, and designing a copyright identification image, wherein the copyright identification image is a portrait or LOGO or any image of a copyright owner;
step S2, making the surface layer image and the copyright identification image into a composite image, and in the composite image, visually hiding the copyright identification image; the copyright identification image and the surface layer image can be consistent or inconsistent in size, when the sizes are inconsistent, the surface layer image needs to be larger than the identification image, the two images are represented by adopting a CMYK mode, and the generated composite image is represented by adopting a CMYK + special channel mode;
step S3, making the composite image into stained paper by printing;
step S4, pasting stained paper on the surface of the porcelain;
step S5, calcining the porcelain with the stained paper, wherein in the calcining process, the composite image ink on the stained paper is fused with the surface of the porcelain, and finally, the composite image is firmly attached to the porcelain body and cannot be separated, so that an unremovable composite image is formed;
step S6, adopting a discrimination device to read the composite image on the porcelain;
step S7, manually observing whether the identification device presents the copyright identification image hidden in the composite image, or automatically judging whether the copyright identification image exists by the image identification software in the identification device, and giving out the judgment result;
step S8, if there is no copyright identification image, the copyright infringement is suspected;
and step S9, if the copyright identification image exists, the copyright infringement is not suspected.
Further, the manufacturing method comprises the following steps:
the image composition is automatically realized by a computer by adopting a composition algorithm, and before composition, the copyright identification image and the image data of the surface layer image are read into the computer;
overlapping the copyright identification image and the surface layer image, respectively processing the overlapped parts of the two images, and representing the copyright identification image in an A-class image channel by adopting infrared sensitive color; representing the surface layer image in a B-type image channel by adopting primary-color metamerism colors, and performing metamerism color conversion of overlapped colors on the overlapped part so as to eliminate the influence of superposition of copyright identification images on color value deviation of the composite image;
the A-type image channel is provided with one or more independent image channels, and when the A-type image channel is required to be sensitive to a plurality of infrared lights with different wavelengths, the A-type image channel is additionally provided with the independent image channels;
when two infrared sensitive colors that separate wavelengths greater than X4 are used, two different latent images can be hidden; when two invisible images are hidden, cancellation processing and metamerism color conversion are carried out according to the superposed images of the two invisible images;
the B-type image channel is provided with one or more independent image channels, the finally formed image color is close to the primary color of the original surface layer image through the allocation of different primary color colors of a plurality of channels, and the color allocation adopts a public common metamerism color model;
the comprehensive gray value X5 of the A-channel image is adjustable, the starting point of the gray value which can be effectively presented by the printing screen dots is the lower limit of X5, and the overall composite image and the harmony of the peripheral colors of the overall composite image, the hiding performance of the invisible image and the presentation effect of the copyright identification image are balanced and are all optimal by adjusting the comprehensive gray value;
and storing the generated composite image as a computer image file in a CMYK + special channel mode, wherein during storage, corresponding relations exist among the A-type image channel, the B-type image channel and the CMYK + special channel.
Step S3 includes the following sub-steps:
step S31, the surface layer image in the composite image is a two-dimensional code or a seal image, when the surface layer image is attached to the independent space at the bottom of the porcelain, stained paper is independently made, and the stained paper is unrelated to other position images of the porcelain; when the porcelain is observed visually, the color of the composite image is similar to that of a common bottom-money seal of the porcelain without the invisible image, the identification and the use of the common bottom-money are not influenced, and when the porcelain is observed by equipment, copyright identification images such as the portrait of a work author, LOGO and the like are observed;
step S32, the surface layer image in the compound image is a local pattern in the porcelain art design pattern, the whole pattern is made into a stained paper with a complete pattern, the local pattern is visually seen and is integrated with the peripheral pattern to form a complete picture composition, and when the compound image is observed by equipment, copyright identification images such as the portrait of a work writer, LOGO and the like are seen;
step S33, reading out the composite image data from the composite image file, converting the CMYK + special channels into channel data of two different processing methods of an A-type image channel and a B-type image channel according to the corresponding relation, and respectively printing on stained paper by using stained paper ink;
step S34, for the A-type image channel and the B-type image channel, an isolation layer is needed to be used for isolation between the ink of the A-type image channel and the ink of the B-type image channel during printing, so as to avoid the mutual color interference caused by the melting of the ink during calcination and influence on the original design effect; in the A-type channel, if two different invisible images need to be formed, the respective channels of the two invisible images also need to be isolated; isolation is achieved by adding an isolation oil layer;
step S35, selecting low-temperature, medium-temperature and high-temperature printing ink and stained paper base materials with different temperature value sections according to different color values of the composite image, and manufacturing the low-temperature, medium-temperature and high-temperature stained paper to balance the reduction degree of the image quality and the fusion firmness of the printing ink and the porcelain body;
step S36, the temperature of the printing ink and the stained paper refers to the calcining temperature, the medium temperature is 800 ℃ and the high temperature is more than 100O ℃, and when the low-temperature stained paper is adopted, the low-temperature stained paper is 300 ℃ and 150 ℃;
step S37, the stained paper is printed by adopting a silk screen or flat plate mode of more than X6 meshes to ensure the stable quality of the invisible images, and when two invisible images need to be formed, the stained paper is printed by adopting a silk screen or flat plate mode of more than X7 meshes;
and step S38, the stained paper printing adopts common stained paper printing ink and does not adopt special invisible printing ink.
The calcination method comprises the following steps:
the manufactured stained paper is attached to the surface of the porcelain, and the image on the stained paper is integrated with the porcelain and can not be separated through calcination, so that the body attachment of a composite image (including a copyright identification image) on the porcelain is realized;
the stained paper is attached to a non-glazed surface, or attached to a glazed surface after glazing and drying;
the calcination process is completed by one-time calcination in the process of calcination of the porcelain for the high-temperature stained paper; for the medium-temperature stained paper, the calcination is completed once in the process of the calcination of the porcelain, or the secondary calcination is carried out after the high-temperature calcination is completed; for the low-temperature stained paper, secondary calcination is carried out after high-temperature calcination is finished;
the identification equipment comprises a mobile terminal and an infrared camera device with X1 nanometer wavelength, wherein during reading, the infrared camera device collects images and transmits the images to the mobile terminal, and when two invisible images are hidden, two infrared light sections with different wavelengths are required to be respectively observed;
due to the reduction of the color contrast of the black and white code elements of the two-dimensional code in the composite image caused by the composition, the color contrast can be controlled below X2 percent, so that the color contrast is far higher than a threshold value X3 required by the normal identification of the two-dimensional code, and the normal identification and reading of the two-dimensional code are not influenced;
the copyright identification image is an image (such as a writer portrait, a LOGO and the like) of a work producer or a production unit, the copyright identification image can also be a digital code and a character code, when the copyright identification image is a code, the invisible code of one object and one code of a porcelain work can be realized, and different individuals of the same kind of work can have different codes;
the invention is suitable for works or products with different processes, different shapes, different curved surfaces and different sizes, and the effect is not influenced by the difference of the processes, the shapes, the curved surfaces and the sizes.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A porcelain product body copyright protection method embedded with invisible identification images is characterized by comprising the following steps:
step S1, determining a surface layer image and designing a copyright identification image;
step S2, making the surface layer image and the copyright identification image into a composite image, and in the composite image, visually hiding the copyright identification image;
step S3, making the composite image into stained paper by printing;
step S4, pasting stained paper on the surface of the porcelain;
step S5, calcining the porcelain with the stained paper, wherein in the calcining process, the composite image ink on the stained paper is fused with the surface of the porcelain, and finally, the composite image is firmly attached to the porcelain body and cannot be separated, so that an unremovable composite image is formed;
step S6, adopting a discrimination device to read the composite image on the porcelain;
step S7, manually observing whether the identification device presents the copyright identification image hidden in the composite image, or automatically judging whether the copyright identification image exists by the image identification software in the identification device, and giving out the judgment result;
step S8, if there is no copyright identification image, the copyright infringement is suspected;
and step S9, if the copyright identification image exists, the copyright infringement is not suspected.
2. The composite image produced in step S2 of claim 1, wherein the production method comprises:
the image composition is automatically realized by a computer by adopting a composition algorithm, and before composition, the copyright identification image and the image data of the surface layer image are read into the computer;
overlapping the copyright identification image and the surface layer image, respectively processing the overlapped parts of the two images, and representing the copyright identification image in an A-class image channel by adopting infrared sensitive color; representing the surface layer image in a B-type image channel by adopting primary-color metamerism colors, and performing metamerism color conversion of overlapped colors on the overlapped part so as to eliminate the influence of superposition of copyright identification images on color value deviation of the composite image;
the A-type image channel is provided with one or more independent image channels, and when the A-type image channel is required to be sensitive to a plurality of infrared lights with different wavelengths, the A-type image channel is additionally provided with the independent image channels;
when two infrared sensitive colors that separate wavelengths greater than X4 are used, two different latent images can be hidden; when two invisible images are hidden, cancellation processing and metamerism color conversion are carried out according to the superposed images of the two invisible images;
the B-type image channel is provided with one or more independent image channels, the finally formed image color is close to the primary color of the original surface layer image through the allocation of different primary color colors of a plurality of channels, and the color allocation adopts a public common metamerism color model;
the comprehensive gray value X5 of the A-channel image is adjustable, the starting point of the gray value which can be effectively presented by the printing screen dots is the lower limit of X5, and the overall composite image and the harmony of the peripheral colors of the overall composite image, the hiding performance of the invisible image and the presentation effect of the copyright identification image are balanced and are all optimal by adjusting the comprehensive gray value;
the generated composite image is stored as a computer image file by adopting a CMYK + special channel mode, and when the computer image file is stored,
there is a correspondence between the type a image channels, the type B image channels, and the CMYK + dedicated channels.
3. Step S3, according to claim 1, comprising the sub-steps of:
step S31, the surface layer image in the composite image is a two-dimensional code or a seal image, when the surface layer image is attached to the independent space at the bottom of the porcelain, stained paper is independently made, and the stained paper is unrelated to other position images of the porcelain; the two-dimensional code or the stamp image can be monochrome or color;
step S32, the surface layer image in the composite image is a local pattern in the porcelain art design pattern, and the whole pattern is made into stained paper with a complete pattern;
step S33, reading out the composite image data from the composite image file, converting the CMYK + special channels into channel data of two different processing methods of an A-type image channel and a B-type image channel according to the corresponding relation, and respectively printing on stained paper by using stained paper ink;
step S34, for the A-type image channel and the B-type image channel, an isolation layer is needed to be used for isolation between the ink of the A-type image channel and the ink of the B-type image channel during printing, so as to avoid the mutual color interference caused by the melting of the ink during calcination and influence on the original design effect; in the A-type channel, if two different invisible images need to be formed, the respective channels of the two invisible images also need to be isolated; isolation is achieved by adding an isolation oil layer;
step S35, selecting low-temperature, medium-temperature and high-temperature printing ink and stained paper base materials with different temperature value sections according to different color values of the composite image, and manufacturing the low-temperature, medium-temperature and high-temperature stained paper to balance the reduction degree of the image quality and the fusion firmness of the printing ink and the porcelain body;
step S36, the temperature of the printing ink and the stained paper refers to the calcining temperature, the medium temperature is 800 ℃ and the high temperature is more than 100O ℃, and when the low-temperature stained paper is adopted, the low-temperature stained paper is 300 ℃ and 150 ℃;
step S37, the stained paper is printed by adopting a silk screen or flat plate mode of more than X6 meshes to ensure the stable quality of the invisible images, and when two invisible images need to be formed, the stained paper is printed by adopting a silk screen or flat plate mode of more than X7 meshes;
and step S38, the stained paper printing adopts common stained paper printing ink and does not adopt special invisible printing ink.
4. Calcination in step S5, according to claim 1, characterized in that the calcination method comprises:
the manufactured stained paper is attached to the surface of the porcelain, and the image on the stained paper is integrated with the porcelain and can not be separated through calcination, so that the body attachment of a composite image (including a copyright identification image) on the porcelain is realized;
the stained paper is attached to a non-glazed surface, or attached to a glazed surface after glazing and drying;
the calcination process is completed by one-time calcination in the process of calcination of the porcelain for the high-temperature stained paper; for the medium-temperature stained paper, the calcination is completed once in the process of the calcination of the porcelain, or the secondary calcination is carried out after the high-temperature calcination is completed; for the low-temperature stained paper, secondary calcination is required after high-temperature calcination is finished.
5. The authentication apparatus in step S6, according to claim 1, wherein: the identification equipment comprises a mobile terminal and an infrared camera device with X1 nanometer wavelength, and when in recognition, the infrared camera device collects images and transmits the images to the mobile terminal. When two invisible images are hidden, two infrared light sections with different wavelengths are needed to be respectively observed.
6. A surface layer image in step S31 of claim 3, which is a two-dimensional code, wherein: the reduction of the color contrast of the black and white code elements of the two-dimensional code in the composite image caused by the composition can be controlled below X2 percent, so that the color contrast is far higher than a threshold value X3 required by normal identification of the two-dimensional code, and the normal identification and reading of the two-dimensional code are not influenced.
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| CN202010748297.5A CN111882746A (en) | 2020-07-30 | 2020-07-30 | Porcelain product body copyright protection method embedded with invisible identification image |
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| CN202010748297.5A CN111882746A (en) | 2020-07-30 | 2020-07-30 | Porcelain product body copyright protection method embedded with invisible identification image |
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| CN202010748297.5A Pending CN111882746A (en) | 2020-07-30 | 2020-07-30 | Porcelain product body copyright protection method embedded with invisible identification image |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113052745A (en) * | 2021-04-25 | 2021-06-29 | 景德镇陶瓷大学 | Digital watermark model training method, ceramic watermark image manufacturing method and ceramic |
| CN113379585A (en) * | 2021-06-23 | 2021-09-10 | 景德镇陶瓷大学 | Ceramic watermark model training method and embedding method for frameless positioning |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113052745A (en) * | 2021-04-25 | 2021-06-29 | 景德镇陶瓷大学 | Digital watermark model training method, ceramic watermark image manufacturing method and ceramic |
| CN113052745B (en) * | 2021-04-25 | 2022-01-07 | 景德镇陶瓷大学 | Digital watermark model training method, ceramic watermark image manufacturing method and ceramic |
| CN113379585A (en) * | 2021-06-23 | 2021-09-10 | 景德镇陶瓷大学 | Ceramic watermark model training method and embedding method for frameless positioning |
| CN113379585B (en) * | 2021-06-23 | 2022-05-27 | 景德镇陶瓷大学 | Ceramic watermark model training method and embedding method for frameless positioning |
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Application publication date: 20201103 |