CN109740712B - Two-dimensional code for hiding anti-counterfeiting mark image - Google Patents
Two-dimensional code for hiding anti-counterfeiting mark image Download PDFInfo
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- CN109740712B CN109740712B CN201811567965.3A CN201811567965A CN109740712B CN 109740712 B CN109740712 B CN 109740712B CN 201811567965 A CN201811567965 A CN 201811567965A CN 109740712 B CN109740712 B CN 109740712B
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Abstract
一种隐藏防伪标识图像的二维码，将防伪标识图像植入到一幅明码二维码图像中，生成一种含有防伪标识图像的特殊二维码图像，该二维码图像在可见光下可以读取二维码图像的信息，在红外光下则显现可读取防伪标识图像，通过防伪标识图像，可以用来表征印刷品是否为正品,若假冒复制这种二维码，因其失去了同色异谱的颜色特性，防伪标识图像将丢失，因此可以用这种特性来鉴别印标签、票据、有价证券等刷品是否存在假冒侵权问题。
A two-dimensional code with a hidden anti-counterfeiting logo image, the anti-counterfeiting logo image is implanted into a clear code two-dimensional code image, and a special two-dimensional code image containing the anti-counterfeiting logo image is generated, and the two-dimensional code image can be displayed under visible light. Read the information of the two-dimensional code image, and the readable anti-counterfeiting logo image will appear under infrared light. Through the anti-counterfeiting logo image, it can be used to indicate whether the printed matter is genuine. If the two-dimensional code is counterfeited and copied, it will lose the same color. Due to the color characteristics of different spectrums, the anti-counterfeiting logo image will be lost, so this characteristic can be used to identify whether there is a problem of counterfeiting and infringement on printed labels, bills, securities and other printed products.
Description
Belongs to the technical field of:
the invention relates to an anti-counterfeiting printing technology, in particular to a two-dimensional code for hiding an anti-counterfeiting identification image, which can be used for anti-counterfeiting of various printed products.
Background art:
at present, the common anti-counterfeiting methods comprise the following methods: the first one is laser anti-fake mark, which is one kind of anti-fake label printed with laser invisible ink and fluorescent ink. The second is a cipher anti-fake label, the method is that each product is coded with a group of digital codes, the codes of each product are different, the digital codes are printed on the label and covered, and the digital codes are stored in a computer database which can be inquired by consumers, when the consumers buy the products, the digital codes on the labels are input into the computer database by telephone or network computer to compare and identify, the same is true, the different is false, the method is simple, the identification is easy, the label is not easy to forge, but in the actual use, the coded data is printed on the label after the coded data is generated uniformly by the computer. The coded data representing the true and false of the product can be illegally copied and counterfeited, and meanwhile, the code can also be used for recovering the code making label on the product which is not inquired and is pasted on the false product, so that the anti-counterfeiting effect is difficult to ensure. The third one is texture anti-fake, which is anti-fake with the texture characteristic on the label, but it is difficult to forge, because only the sequence number of the label is set and the label is a plain code, each label can be inquired repeatedly, and the counterfeiter can forge in batches according to the characteristic after copying the sequence number on the label and the necessary texture characteristic reflected in the inquiry, i.e. whether there is a phenomenon in the square by the warehouse keeper or salesperson. The fourth one is metamerism ink anti-counterfeiting, which is an anti-counterfeiting printing technology based on metamerism phenomenon, i.e. the anti-counterfeiting is realized by utilizing the phenomenon that two substances present the same color under one light source but different colors under the other light source, but the proportion of metamerism is easy to measure, so the anti-counterfeiting effect is difficult to guarantee.
In summary, the existing anti-counterfeit methods have certain disadvantages, and thus cannot prevent counterfeit products from being radically.
The invention content is as follows:
aiming at overcoming the defects of the prior anti-counterfeiting printing technology of various printed products, the invention improves the prior art aiming at the defects of the prior anti-counterfeiting printing technology of the printed products, provides a two-dimensional code for hiding an anti-counterfeiting mark image, the anti-counterfeiting mark image is implanted into a clear code two-dimensional code image through metamerism color matching algorithm, halftone screening and information hiding technology to generate a special two-dimensional code image containing the anti-counterfeiting mark image, the two-dimensional code image can read the information of the two-dimensional code image under visible light, the readable anti-counterfeiting mark image can be displayed under infrared light, the anti-counterfeiting mark image can be used for representing whether the printed product is a genuine product, if the two-dimensional code is copied by counterfeiting, the anti-counterfeiting mark image is lost because the color characteristic of metamerism is lost, and therefore, a printed label and a printed label can be identified by the characteristic, The problem of counterfeit infringement exists in the printed matters such as bills and securities.
Cyan, yellow and black, four colors are generally described by CMYK, metamerism generally means that color printed CMYK four color inks form a set of matched color matching inks that are perceived as the same color under visible light, i.e., the same color; under infrared light, the CMYK four-color ink shows different colors due to different mixture ratios, namely, heterochromatism, and the phenomenon is called metamerism phenomenon.
The technical scheme adopted by the invention for solving the technical problems is as follows: a two-dimensional code image is formed by clear code information, the two-dimensional code image is called a clear code two-dimensional code image, an anti-counterfeiting mark image is formed by mark image information, in order to hide the anti-counterfeiting mark image in the clear code two-dimensional code image, the anti-counterfeiting mark image and the clear code two-dimensional code image are printed on the same position of a page in a completely overlapped mode, color blocks of the anti-counterfeiting mark image and color blocks of the clear code two-dimensional code image are overlapped in a one-to-one corresponding mode, the color blocks overlapped in one-to-one mode can be divided into four types, the first type of color block clear code two-dimensional code image requires to display white under visible light, the anti-counterfeiting mark image requires to display white under infrared light, the second type of clear code two-dimensional code image requires to display black under visible light, the anti-counterfeiting mark image requires to display white under infrared light, the third type of color block clear code two-dimensional code image requires to display white under visible light and the anti-counterfeiting mark image requires to display black under infrared light, the fourth kind of color block plain code two-dimensional code image requires black color under visible light and the anti-counterfeiting mark image requires black color under infrared light,
adopting CMYK four-color ink to generate four groups of color matching ink with matched proportion, wherein the four-color ink proportion of the first group of color matching ink is C1M1Y1K1And the first group of color matching ink shows white under visible light and infrared light through proportion color matching, and the second group of color matching ink has the four-color ink proportion of C2M2Y2K2And the second group of color matching ink shows black under visible light and white under infrared light through proportional color matching, and the fourth group of color matching ink has a four-color ink proportion of C3M3Y3K3And the third group of color matching ink shows white under visible light and black under infrared light through proportional color matching, and the fourth group of color matching ink has a four-color ink proportion of C4M4Y4K4And the fourth group of color matching ink shows black under visible light and infrared light through proportional color matching,
the method comprises the steps of modulating the color blocks of a plain code two-dimensional code image by using black and white color blocks of an anti-counterfeiting label image, printing the corresponding color blocks of the anti-counterfeiting label image and the plain code two-dimensional code image which need to show white under visible light and infrared light by adopting a first group of color matching inks, printing the corresponding color blocks of the plain code two-dimensional code image which need to show black under visible light and the anti-counterfeiting label image which need to show white under infrared light by adopting a second group of color matching inks, printing the corresponding color blocks of the plain code two-dimensional code image which need to show white under visible light and the anti-counterfeiting label image which need to show black under infrared light by adopting a third group of color matching inks, printing the corresponding color blocks of the anti-counterfeiting label image and the plain code two-dimensional code image which need to show black under visible light and infrared light by adopting a fourth group of color matching inks, and displaying the plain code two-dimensional code image in an area where the anti-counterfeiting label image and the plain code two-dimensional code image are printed in an overlapping way, and the clear code two-dimensional code image information can be scanned and read, the anti-counterfeiting identification image is displayed under infrared light, and the two-dimensional code image hiding the anti-counterfeiting identification image is generated.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a block diagram of an anti-counterfeit two-dimensional code with a hidden special identification image.
FIG. 2 is a block diagram of an anti-counterfeit two-dimensional code recognition process for hiding a special identification image.
FIG. 3 is a block diagram of an anti-counterfeit two-dimensional code authenticity judgment hiding a special identification image.
FIG. 4 is a flow chart of color modulation of an anti-counterfeit two-dimensional code with a hidden special identification image.
Fig. 5 is a partial diagram corresponding to the clear code two-dimensional code image and the anti-counterfeiting mark image.
Detailed Description
In fig. 1, 4 and 5, a two-dimensional code image is formed by clear code information, which is called a clear code two-dimensional code image, and an anti-counterfeiting label image is formed by label image information, in order to hide the anti-counterfeiting label image in the clear code two-dimensional code image, the anti-counterfeiting label image and the clear code two-dimensional code image are printed on the same position of a page in a completely overlapped manner, and color blocks of the anti-counterfeiting label image and the clear code two-dimensional code image are overlapped one by one, the color blocks which are overlapped one by one can be divided into four types, the first type color block 1 clear code two-dimensional code image requires to show white under visible light and the anti-counterfeiting label image requires to show white under infrared light, the second type color block 2 clear code two-dimensional code image requires to show black under visible light and the anti-counterfeiting label image requires to show white under infrared light, the third type color block 3 clear code two-dimensional code image requires to show white under visible light and the anti-counterfeiting label image requires to show black under infrared light, the fourth kind of color block 4 plain code two-dimensional code image requires black color under visible light and the anti-counterfeiting mark image requires black color under infrared light,
adopting CMYK four-color ink to generate four groups of color matching ink with matched proportion, wherein the four-color ink proportion of the first group of color matching ink is C1M1Y1K1And the first group of color matching ink shows white under visible light and infrared light through proportion color matching, and the second group of color matching ink has the four-color ink proportion of C2M2Y2K2And the second group of color matching ink shows black under visible light and white under infrared light through proportional color matching, and the fourth group of color matching ink has a four-color ink proportion of C3M3Y3K3And the third group of color matching ink shows white under visible light and black under infrared light through proportional color matching, and the fourth group of color matching ink has a four-color ink proportion of C4M4Y4K4And the fourth group of color matching ink shows black under visible light and infrared light through proportional color matching,
the method comprises the steps of modulating the color blocks of a plain code two-dimensional code image by using black and white color blocks of an anti-counterfeiting mark image, printing the corresponding color blocks of the anti-counterfeiting mark image and the plain code two-dimensional code image which need to show white under visible light and infrared light by adopting a first group of color matching inks, printing the corresponding color blocks of the plain code two-dimensional code image which need to show black under visible light and the anti-counterfeiting mark image which need to show white under infrared light by adopting a second group of color matching inks, printing the corresponding color blocks of the plain code two-dimensional code image which need to show white under visible light and the anti-counterfeiting mark image which need to show black under infrared light by adopting a third group of color matching inks, printing the corresponding color blocks of the anti-counterfeiting mark image and the plain code two-dimensional code image which need to show black under visible light and infrared light by adopting a fourth group of color matching inks, and generating a special two-dimensional code image containing the anti-counterfeiting mark image,
in fig. 2 and 3, the special two-dimensional code image can show and read information of the plain code two-dimensional code image under visible light, the anti-counterfeiting identification image is shown under infrared light, the anti-counterfeiting identification image can be used for representing whether a printed matter is a genuine product, if the two-dimensional code is copied in a counterfeit mode, the anti-counterfeiting identification image is lost due to the fact that the two-dimensional code loses the color characteristic of metamerism, and therefore the characteristic can be used for identifying whether printed matters such as printed labels, bills and securities have counterfeit infringement problems.
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| CN107766681A (en) * | 2017-11-24 | 2018-03-06 | 深圳劲嘉集团股份有限公司 | A kind of alignment technique of printed matter black ink prediction spectrum |
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| US8211490B2 (en) * | 2009-03-17 | 2012-07-03 | Xerox Corporation | Double layer UV variable data text |
| US20110001314A1 (en) * | 2009-07-01 | 2011-01-06 | Xerox Corporation | Security codes within scratch-off layers and method of embedding thereof |
| US8261988B2 (en) * | 2009-11-30 | 2012-09-11 | Xerox Corporation | Phase locked IR encoding for peened 2D barcodes |
| CN102156896A (en) * | 2011-01-27 | 2011-08-17 | 北京广微积电科技有限公司 | Anti-counterfeiting identifier and identifying method thereof |
| CN105131718B (en) * | 2015-09-16 | 2016-08-17 | 永发印务(东莞)有限公司 | Anti-counterfeiting metamerism ink and preparation method and printing method thereof |
| TWI609331B (en) * | 2016-11-22 | 2017-12-21 | 陳叁豪 | A multi-spectral digital watermark image and manufacturing method therefor |
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