CN109726788A - The hiding light and shade dicode two dimensional code of metamerism - Google Patents
The hiding light and shade dicode two dimensional code of metamerism Download PDFInfo
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- CN109726788A CN109726788A CN201811567952.6A CN201811567952A CN109726788A CN 109726788 A CN109726788 A CN 109726788A CN 201811567952 A CN201811567952 A CN 201811567952A CN 109726788 A CN109726788 A CN 109726788A
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Abstract
A kind of light and shade dicode two dimensional code that metamerism is hiding, the two dimensional code passes through metamerism matching algorithm, halftone screen and Information Hiding Techniques, one width private mark image in 2 D code is implanted in another width plain code image in 2 D code, generate a kind of special image in 2 D code of dicode containing light and shade, the image in 2 D code can read the information of plain code image in 2 D code under visible light, private mark image in 2 D code information then can be read under infrared light, pass through light and shade two-dimensional barcode information comparative analysis, it can be used to characterize whether printed matter is certified products, if personation replicates this image in 2 D code, because it loses the color characteristics of metamerism, private mark image in 2 D code will be lost, to not read private mark image in 2 D code information, marking label can be identified 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, the hiding light and shade dicode two dimensional code of especially a kind of metamerism, 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.
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 light and shade dicode two dimension that metamerism is hiding
Code, the two dimensional code is by metamerism matching algorithm, halftone screen and Information Hiding Techniques, by a width private mark image in 2 D code
It is implanted in another width plain code image in 2 D code, generates a kind of special image in 2 D code of dicode containing light and shade, the image in 2 D code
Private mark image in 2 D code information then can be read in the information that plain code image in 2 D code can be read under visible light under infrared light,
By light and shade two-dimensional barcode information comparative analysis, can be used to characterize whether printed matter is certified products, if personation replicates this two dimensional code
Image, because it loses the color characteristics of metamerism, private mark image in 2 D code will be lost, to can not read private mark two dimensional code figure
As information, the brushes product such as marking label, bill, marketable securities can be identified with this characteristic 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: a width image in 2 D code is made of plain code information,
Referred to as plain code image in 2 D code is made of a width image in 2 D code, referred to as private mark image in 2 D code, private mark two dimensional code private mark information
Color lump in the color lump figure of image and plain code image in 2 D code all contains black color lump and white two kinds of color lumps of color lump, for by private mark
Image in 2 D code is hidden in plain code image in 2 D code, we are completely overlapped by private mark image in 2 D code and plain code image in 2 D code
Be printed on the same position of the page, and keep the color lump of private mark image in 2 D code and plain code image in 2 D code one-to-one
It coincides together, the color lump for corresponding coincidence can be divided into four classes, and first kind color lump plain code image in 2 D code is required visible
Show white under light and the requirement of private mark image in 2 D code also shows white, the second class color lump plain code two dimensional code figure under infrared light
Picture requires to show black under visible light and the requirement of private mark image in 2 D code shows white under infrared light, and third class color lump is bright
Code image in 2 D code requires to show white under visible light and the requirement of private mark image in 2 D code shows black under infrared light, the
Four class color lump plain code image in 2 D code require to show black and the requirement of private mark image in 2 D code under visible light under infrared light
Also show black,
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
It is seen that identical white, the second four color ink ratios for assembling color ink are C under outer light2M2Y2K2, and matched by ratio
Color makes second to assemble color ink under visible light it is seen that black, under infrared light it is seen that white, and the color matching of third group is oily
Four color ink ratios of ink are C3M3Y3K3, and by ratio color matching so that third is assembled color ink under visible light it is seen that
White, it is seen that black, the 4th four color ink ratios for assembling color ink are C under infrared light4M4Y4K4, and pass through ratio
Example color matching make the 4th assemble color ink under visible light under infrared light it is seen that identical black,
Plain code image in 2 D code color lump is modulated using private mark image in 2 D code black and white color lump, so that private mark image in 2 D code and plain code
Image in 2 D code assembles color ink printing using first with the correspondence color lump for requiring to show white under infrared light under visible light,
Plain code image in 2 D code needs to show under visible light pair for needing to show white under black and private mark image in 2 D code infrared light
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 private mark two dimensional code
Image needs to show the correspondence color lump of black and assembles color ink printing using third under infrared light, private mark image in 2 D code 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 shows plain code two dimension in this way in the region of private mark image in 2 D code and the overlapping printing of plain code image in 2 D code under visible light
Code image, and can scan and read plain code image in 2 D code information, private mark image in 2 D code is shown under infrared light, and reading can be scanned
Private mark image in 2 D code information out generates metamerism light and shade dicode image in 2 D code.
Detailed description of the invention
The following further describes the present invention with reference to the drawings.
The generation block diagram of Fig. 1 metamerism light and shade dicode image in 2 D code.
The identification block diagram of Fig. 2 metamerism light and shade dicode image in 2 D code.
The genuine/counterfeit discriminating block diagram of Fig. 3 metamerism light and shade dicode image in 2 D code.
The product process figure of Fig. 4 metamerism light and shade dicode image in 2 D code.
Fig. 5 plain code image in 2 D code and the corresponding Local map of private mark image in 2 D code.
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 made of plain code information, by dark
Code information one width image in 2 D code of composition, referred to as private mark image in 2 D code, private mark image in 2 D code and plain code image in 2 D code
Color lump in color lump figure all contains two kinds of color lumps of black color lump and white color lump, for private mark image in 2 D code is hidden in plain code two
It ties up in code image, our same positions for being printed on the page that private mark image in 2 D code and plain code image in 2 D code is completely overlapped
On, and private mark image in 2 D code and the color lump of plain code image in 2 D code is made to coincide together correspondingly, correspond weight
The color lump of conjunction can be divided into four classes, and 1 plain code image in 2 D code of first kind color lump requires to show white and private mark under visible light
Image in 2 D code requires also to show white under infrared light, and 2 plain code image in 2 D code of the second class color lump requires to show under visible light
Existing black and private mark image in 2 D code require to show white under infrared light, the requirement of 3 plain code image in 2 D code of third class color lump
Show white under visible light and the requirement of private mark image in 2 D code shows black, 4 plain code two of the 4th class color lump under infrared light
Dimension code image request shows black under visible light and the requirement of private mark image in 2 D code also shows 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
It is seen that identical white, the second four color ink ratios for assembling color ink are C under outer light2M2Y2K2, and matched by ratio
Color makes second to assemble color ink under visible light it is seen that black, under infrared light it is seen that white, and the color matching of third group is oily
Four color ink ratios of ink are C3M3Y3K3, and by ratio color matching so that third is assembled color ink under visible light it is seen that
White, it is seen that black, the 4th four color ink ratios for assembling color ink are C under infrared light4M4Y4K4, and pass through ratio
Example color matching make the 4th assemble color ink under visible light under infrared light it is seen that identical black,
Plain code image in 2 D code color lump is modulated using private mark image in 2 D code black and white color lump, so that private mark image in 2 D code and plain code
Image in 2 D code assembles color ink printing using first with the correspondence color lump for requiring to show white under infrared light under visible light,
Plain code image in 2 D code needs to show under visible light pair for needing to show white under black and private mark image in 2 D code infrared light
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 private mark two dimensional code
Image needs to show the correspondence color lump of black and assembles color ink printing using third under infrared light, private mark image in 2 D code 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 a kind of special image in 2 D code of dicode containing light and shade,
In figure 2 and figure 3, which can read the information of plain code image in 2 D code under visible light, red
Private mark image in 2 D code information then can be read under outer light, by light and shade two-dimensional barcode information comparative analysis, be for characterizing printed matter
No is certified products, if personation replicates this special image in 2 D code, because it loses the color characteristics of metamerism, private mark two dimensional code
Image will be lost, to can not read private mark image in 2 D code information, can identify marking label, bill, valuable with this characteristic
The brushes product such as security are with the presence or absence of personation infringement problem.
Claims (1)
1. a kind of hiding light and shade dicode two dimensional code of metamerism, it is characterized in that: a width image in 2 D code is made of plain code information,
Referred to as plain code image in 2 D code is made of a width image in 2 D code, referred to as private mark image in 2 D code, private mark two dimensional code private mark information
Color lump in the color lump figure of image and plain code image in 2 D code all contains black color lump and white two kinds of color lumps of color lump, for by private mark
Image in 2 D code is hidden in plain code image in 2 D code, we are completely overlapped by private mark image in 2 D code and plain code image in 2 D code
Be printed on the same position of the page, and keep the color lump of private mark image in 2 D code and plain code image in 2 D code one-to-one
It coincides together, the color lump for corresponding coincidence can be divided into four classes, and first kind color lump plain code image in 2 D code is required visible
Show white under light and the requirement of private mark image in 2 D code also shows white, the second class color lump plain code two dimensional code figure under infrared light
Picture requires to show black under visible light and the requirement of private mark image in 2 D code shows white under infrared light, and third class color lump is bright
Code image in 2 D code requires to show white under visible light and the requirement of private mark image in 2 D code shows black under infrared light, the
Four class color lump plain code image in 2 D code require to show black and the requirement of private mark image in 2 D code under visible light under infrared light
Also show black,
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
It is seen that identical white, the second four color ink ratios for assembling color ink are C under outer light2M2Y2K2, and matched by ratio
Color makes second to assemble color ink under visible light it is seen that black, under infrared light it is seen that white, and the color matching of third group is oily
Four color ink ratios of ink are C3M3Y3K3, and by ratio color matching so that third is assembled color ink under visible light it is seen that
White, it is seen that black, the 4th four color ink ratios for assembling color ink are C under infrared light4M4Y4K4, and pass through ratio
Example color matching make the 4th assemble color ink under visible light under infrared light it is seen that identical black,
Plain code image in 2 D code color lump is modulated using private mark image in 2 D code black and white color lump, so that private mark image in 2 D code and plain code
Image in 2 D code assembles color ink printing using first with the correspondence color lump for requiring to show white under infrared light under visible light,
Plain code image in 2 D code needs to show under visible light pair for needing to show white under black and private mark image in 2 D code infrared light
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 private mark two dimensional code
Image needs to show the correspondence color lump of black and assembles color ink printing using third under infrared light, private mark image in 2 D code 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 shows plain code two dimension in this way in the region of private mark image in 2 D code and the overlapping printing of plain code image in 2 D code under visible light
Code image, and can scan and read plain code image in 2 D code information, private mark image in 2 D code is shown under infrared light, and reading can be scanned
Private mark image in 2 D code information out generates metamerism light and shade dicode image in 2 D code.
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| CN201811567952.6A CN109726788B (en) | 2018-12-21 | 2018-12-21 | Light and shade double-code two-dimensional code with hidden metamerism |
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| IT201900020967A1 (en) * | 2019-11-12 | 2021-05-12 | Tecnoalimenti S C P A | Authentication device for a retail product |
| CN113269289A (en) * | 2021-05-14 | 2021-08-17 | 北京印刷学院 | Method for generating multispectral composite anti-counterfeiting image and printed matter |
| CN113762446A (en) * | 2021-08-13 | 2021-12-07 | 北京印刷学院 | Multicolor spectrum-multispectral composite anti-counterfeiting two-dimensional code based on CMYK common ink |
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