CN109711514A - Hide the anti-fake two-dimension code of anti-pseudo-random information - Google Patents
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Abstract
A kind of anti-fake two-dimension code for hiding anti-pseudo-random information, the anti-fake two-dimension code is matched colors by metamerism, halftone screen and Information Hiding Techniques, pseudo-random information image is implanted in a width plain code image in 2 D code, it generates containing the special image in 2 D code for hiding pseudo-random information image, the image in 2 D code can read the information of plain code image in 2 D code under visible light, pseudo-random information image can then be shown under infrared light, it can be used to characterize whether printed matter is certified products by pseudo-random information image, if personation replicates this two dimensional code, because it loses the color characteristics of metamerism, pseudo-random information image will be lost, therefore it can identify marking label with this characteristic, bill, the brushes product such as marketable securities are with the presence or absence of personation infringement problem.
Description
Technical field:
The present invention relates to a kind of anti-counterfeiting printing technology, especially a kind of anti-fake two-dimension code for hiding anti-pseudo-random information, Ke Yiyong
In the anti-fake of various printed matters.
Background technique:
Method for anti-counterfeit relatively common at present has following several: the first is laser anti-false sign, with laser recessiveness ink fluorescent
The symbol of product or special identification icon are printed to the anti-fake label of product by ink-printing techniques, and same class product uses
Same labeling, because anti-fake label is easier to forge, and the anti-fake label forged is used on fake products, causes product
It is true and false to obscure, it is accordingly difficult to effectively anti-fake.Second is cipher counterfeit-proof labeling, and used method is that every product compiles one group
The coding of number, every product is different from, this number is printed on labeling and is covered, while can by this number deposit
For when consumer buys product, the number in mark is passed through phone or the meter that networks in the Computer Database of consumer query
Digital entering computer database in mark is compared identification by calculation machine, and identical is true, difference as vacation, method letter
Single, identification is easy, and is not easy to forge, but in actual use, prints labeling after generating because coded data is that computer is unified.It represents
The true and false coded data of product may be illegally duplicated fraud, meanwhile, the coding that coding also can be recycled on the product that do not inquire makes mark
And be attached on false pain product, antifalse effect it is difficult to ensure that.The third is texture anti-fake, anti-fake with the textural characteristics on its labeling, though
Right more difficult forgery, but the serial number due to being only marked with patch, and be plain code, every piece of mark can be inquired repeatedly, and fake producer can pass through warehouse
Phenomenon is copied the presence or absence of in the necessary textural characteristics i.e. grid reflected when administrator or shop-assistant are by serial number and inquiry on labeling
It is forged after attacking by this feature batch.4th kind is that metameric ink is anti-fake, and anti-fake metameric ink is based on metamerism
Identical color is presented using two kinds of substances in the anti-counterfeiting printing technology of phenomenon under a kind of light source, but under another light source,
But the phenomenon that presentation different colours, is realized anti-fake, but the ratio of metamerism is easier to measure, therefore antifalse effect is also difficult to
Guarantee.
In conclusion existing method for anti-counterfeit all has some disadvantages, thus cannot be from preventing fake products at all.
Summary of the invention:
In order to overcome existing various printed matter anti-counterfeiting printing technologies there are the shortcomings that, the present invention is anti-for existing printed matter
Deficiency existing for pseudo- printing technology improves the prior art, proposes a kind of anti-fake two dimension for hiding anti-pseudo-random information
Pseudo-random information image is implanted by code, the anti-fake two-dimension code by metamerism color matching, halftone screen and Information Hiding Techniques
Into a width plain code image in 2 D code, generate containing the special image in 2 D code for hiding pseudo-random information image, the two dimensional code figure
Information as that can read plain code image in 2 D code under visible light, can then show pseudo-random information image under infrared light, lead to
Crossing pseudo-random information image can be used to characterize whether printed matter is certified products, if personation replicates this two dimensional code, because it loses
The color characteristics of metamerism, pseudo-random information image will lose, therefore can be identified with this characteristic marking label, bill,
The brushes product such as marketable securities are with the presence or absence of personation infringement problem.
The yellow black four kinds of colors of green product are generally described with CMYK, and metamerism typically refers to tetra- color ink of CMYK of colored printing
Form one group of ratio match matches color ink, and the ink is under visible light it is seen that identical color, i.e., homochromy；And infrared
Under light, because tetra- color ink of CMYK match different generation chromatography differences, i.e., different spectrum, which can show different colors, this
Kind phenomenon is referred to as metamerism phenomenon.
The technical solution adopted by the present invention to solve the technical problems is: generating a width two dimensional code figure by two-dimensional barcode information
Two-dimensional barcode information encryption scramble is generated pseudo-random binary information flow, utilizes pseudorandom two by picture, referred to as plain code image in 2 D code
Color lump in the color lump figure of binary information stream generation pseudo-random information image, pseudo-random information image and plain code image in 2 D code is all
It is divided into black color lump and white two kinds of color lump, matches color ink for pseudo-random information image and plain code two dimensional code figure using metamerism
As in the completely overlapped image in 2 D code area for being printed on printed matter, so that pseudo-random information image and plain code image in 2 D code
Color lump coincides together correspondingly, and the color lump for corresponding coincidence can be divided into four classes, first kind color lump plain code two dimensional code
Image request shows white under visible light and pseudo-random information image request also shows white, the second class color under infrared light
Block plain code image in 2 D code require show black under visible light and pseudo-random information image request show under infrared light it is white
Color, third class color lump plain code image in 2 D code require to show under visible light white and pseudo-random information image request infrared
Show black under light, the 4th class color lump plain code image in 2 D code requires to show black and pseudo-random information image under visible light
It is required that also show black under infrared light,
Using tetra- color ink of CMYK, generate by tetra- member ink sets of CMYK at four groups of ratio match match color ink, first assembles
Four color ink ratios of color ink are C1M1Y1K1, and by ratio color matching make first assemble color ink under visible light with it is red
All show white under outer light, the second four color ink ratios for assembling color ink are C2M2Y2K2, and make second by ratio color matching
It assembles color ink and shows black under visible light, white is shown under infrared light, third assembles four color ink ratios of color ink
For C3M3Y3K3, and so that third is assembled color ink by ratio color matching and show white under visible light, show under infrared light black
Color, the 4th four color ink ratios for assembling color ink are C4M4Y4K4, and make the 4th to assemble color ink can by ratio color matching
All show black under light-exposed lower and infrared light,
Plain code image in 2 D code color lump is modulated using the color lump of pseudo-random information image, for pseudo-random information image and plain code two
Dimension code image assembles color ink printing using first with the correspondence color lump for requiring to show white under infrared light under visible light, bright
Code image in 2 D code needs to show under visible light black and pseudo-random information image needs to show under infrared light pair of white
Color lump is answered to assemble color ink printing using second, plain code image in 2 D code needs to show under visible light white and pseudo-random information
Image needs to show the correspondence color lump of black and assembles color ink printing using third under infrared light, pseudo-random information image and bright
Code image in 2 D code assembles color ink print using the 4th with the correspondence color lump for requiring to show black under infrared light under visible light
System can show plain code two in the region of pseudo-random information image and the overlapping printing of plain code image in 2 D code so under visible light
Code image is tieed up, and can scan and read plain code image in 2 D code information, pseudo-random information image can be shown under infrared light, is generated
The anti-fake two-dimension code image of hiding pseudo-random information image and plain code image in 2 D code.
Detailed description of the invention
The following further describes the present invention with reference to the drawings.
Fig. 1 hides the generation block diagram of the anti-fake two-dimension code of the anti-pseudo-random information of metamerism.
Fig. 2 hides the identification block diagram of the anti-fake two-dimension code of the anti-pseudo-random information of metamerism.
Fig. 3 hides the genuine/counterfeit discriminating block diagram of the anti-fake two-dimension code of the anti-pseudo-random information of metamerism.
Fig. 4 hides the anti-fake two-dimension code color modulation product process figure of anti-pseudo-random information.
Fig. 5 plain code image in 2 D code and the corresponding Local map of pseudo-random information image.
Specific embodiment
In Fig. 1, Fig. 4 and Fig. 5, a width image in 2 D code, referred to as plain code image in 2 D code are generated by two-dimensional barcode information, it will
Two-dimensional barcode information encrypts scramble and generates pseudo-random binary information flow, generates pseudo-random information using pseudo-random binary information flow
Color lump in the color lump figure of image, pseudo-random information image and plain code image in 2 D code is all divided into black color lump and white color lump two
Kind, using metamerism with color ink by pseudo-random information image and plain code image in 2 D code it is completely overlapped be printed on printed matter
Image in 2 D code area on so that the color lump of pseudo-random information image and plain code image in 2 D code is overlapped correspondingly one
It rises, the color lump for corresponding coincidence can be divided into four classes, and first kind color lump plain code image in 2 D code requires to show under visible light
White and pseudo-random information image request also show white under infrared light, and the second class color lump plain code image in 2 D code requires
Show black under visible light and pseudo-random information image request shows white, third class color lump plain code two dimensional code under infrared light
Image request shows white under visible light and pseudo-random information image request shows black, the 4th class color lump under infrared light
Plain code image in 2 D code require show black under visible light and pseudo-random information image request also show under infrared light it is black
Color,
Using tetra- color ink of CMYK, generate by tetra- member ink sets of CMYK at four groups of ratio match match color ink, first assembles
Four color ink ratios of color ink are C1M1Y1K1, and by ratio color matching make first assemble color ink under visible light with it is red
All show white under outer light, the second four color ink ratios for assembling color ink are C2M2Y2K2, and make second by ratio color matching
It assembles color ink and shows black under visible light, white is shown under infrared light, third assembles four color ink ratios of color ink
For C3M3Y3K3, and so that third is assembled color ink by ratio color matching and show white under visible light, show under infrared light black
Color, the 4th four color ink ratios for assembling color ink are C4M4Y4K4, and make the 4th to assemble color ink can by ratio color matching
All show black under light-exposed lower and infrared light,
Plain code image in 2 D code color lump is modulated using the color lump of pseudo-random information image, for pseudo-random information image and plain code two
Dimension code image assembles color ink printing using first with the correspondence color lump for requiring to show white under infrared light under visible light, bright
Code image in 2 D code needs to show under visible light black and pseudo-random information image needs to show under infrared light pair of white
Color lump is answered to assemble color ink printing using second, plain code image in 2 D code needs to show under visible light white and pseudo-random information
Image needs to show the correspondence color lump of black and assembles color ink printing using third under infrared light, pseudo-random information image and bright
Code image in 2 D code assembles color ink print using the 4th with the correspondence color lump for requiring to show black under infrared light under visible light
System, generates the anti-fake two-dimension code image of hiding pseudo-random information image and plain code image in 2 D code.
In figure 2 and figure 3, the region of printing is overlapped under visible light in pseudo-random information image and plain code image in 2 D code
Plain code image in 2 D code can be shown, and can scan and read plain code two-dimensional barcode information, pseudorandom letter can be shown under infrared light
Image is ceased, can be used to characterize whether printed matter is certified products by pseudo-random information image, if personation replicates this two dimensional code, because
Its color characteristics for losing metamerism, pseudo-random information image will be lost, therefore can identify marking with this characteristic
The brushes product such as label, bill, marketable securities are with the presence or absence of personation infringement problem.
Claims (1)
1. a kind of anti-fake two-dimension code for hiding anti-pseudo-random information, it is characterized in that: generating a width two dimensional code figure by two-dimensional barcode information
Two-dimensional barcode information encryption scramble is generated pseudo-random binary information flow, utilizes pseudorandom two by picture, referred to as plain code image in 2 D code
Color lump in the color lump figure of binary information stream generation pseudo-random information image, pseudo-random information image and plain code image in 2 D code is all
It is divided into black color lump and white two kinds of color lump, matches color ink for pseudo-random information image and plain code two dimensional code figure using metamerism
As in the completely overlapped image in 2 D code area for being printed on printed matter, so that pseudo-random information image and plain code image in 2 D code
Color lump coincides together correspondingly, and the color lump for corresponding coincidence can be divided into four classes, first kind color lump plain code two dimensional code
Image request shows white under visible light and pseudo-random information image request also shows white, the second class color under infrared light
Block plain code image in 2 D code require show black under visible light and pseudo-random information image request show under infrared light it is white
Color, third class color lump plain code image in 2 D code require to show under visible light white and pseudo-random information image request infrared
Show black under light, the 4th class color lump plain code image in 2 D code requires to show black and pseudo-random information image under visible light
It is required that also show black under infrared light,
Using tetra- color ink of CMYK, generate by tetra- member ink sets of CMYK at four groups of ratio match match color ink, first assembles
Four color ink ratios of color ink are C1M1Y1K1, and by ratio color matching make first assemble color ink under visible light with it is red
All show white under outer light, the second four color ink ratios for assembling color ink are C2M2Y2K2, and make second by ratio color matching
It assembles color ink and shows black under visible light, white is shown under infrared light, third assembles four color ink ratios of color ink
For C3M3Y3K3, and so that third is assembled color ink by ratio color matching and show white under visible light, show under infrared light black
Color, the 4th four color ink ratios for assembling color ink are C4M4Y4K4, and make the 4th to assemble color ink can by ratio color matching
All show black under light-exposed lower and infrared light,
Plain code image in 2 D code color lump is modulated using the color lump of pseudo-random information image, for pseudo-random information image and plain code two
Dimension code image assembles color ink printing using first with the correspondence color lump for requiring to show white under infrared light under visible light, bright
Code image in 2 D code needs to show under visible light black and pseudo-random information image needs to show under infrared light pair of white
Color lump is answered to assemble color ink printing using second, plain code image in 2 D code needs to show under visible light white and pseudo-random information
Image needs to show the correspondence color lump of black and assembles color ink printing using third under infrared light, pseudo-random information image and bright
Code image in 2 D code assembles color ink print using the 4th with the correspondence color lump for requiring to show black under infrared light under visible light
System can show plain code two in the region of pseudo-random information image and the overlapping printing of plain code image in 2 D code so under visible light
Code image is tieed up, and can scan and read plain code image in 2 D code information, pseudo-random information image can be shown under infrared light, is generated
The anti-fake two-dimension code image of hiding pseudo-random information image and plain code image in 2 D code.
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