CN109697492A - Page stealth invalid code complementation identifies anti-counterfeit method of credentials - Google Patents
Page stealth invalid code complementation identifies anti-counterfeit method of credentials Download PDFInfo
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- CN109697492A CN109697492A CN201811566159.4A CN201811566159A CN109697492A CN 109697492 A CN109697492 A CN 109697492A CN 201811566159 A CN201811566159 A CN 201811566159A CN 109697492 A CN109697492 A CN 109697492A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
- G06K19/06046—Constructional details
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
- G06K19/06037—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking multi-dimensional coding
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Credit Cards Or The Like (AREA)
- Inspection Of Paper Currency And Valuable Securities (AREA)
Abstract
A kind of page stealth invalid code complementation identification anti-counterfeit method of credentials, image in 2 D code is divided into two parts by the method for anti-counterfeit, by first part's printing image after segmentation on a piece of thin plate key piece, fill invalid code image in blank area after first part's image is divided away from image in 2 D code, so that second part image and one width of invalid code the image construction pseudo- image in 2 D code identical with former image in 2 D code shape and area after segmentation, using metamerism with color ink by pseudo- image in 2 D code on certificate former writings and image overlapping printing together with, show the former writings and image on certificate under visible light, show the pseudo- image in 2 D code being printed on certificate under infrared light, the invalid code image on pseudo- image in 2 D code is replaced to generate a width completely former two dimensional code using first part's image on thin plate key piece under infrared light Image, this method can identify certificate with the presence or absence of personation infringement.
Description
Technical field:
The present invention relates to a kind of anti-counterfeit method of credentials, especially a kind of page stealth invalid code complementation identifies anti-counterfeit method of credentials,
The anti-counterfeit method of credentials can be used in the anti-counterfeit printing of various certificates.
Background technique:
Certificate serves to demonstrate how the certificate and file of identity, experience etc., such as resident identification card, passport, employee's card, student's identity card, finishes
Industry card etc., the fraud of various forms of certificates has given society and the people to bring serious threat, and certificate false proof technology is main
There are digital encryption, digital watermarking, laser anti-false sign, cipher counterfeit-proof labeling, texture anti-fake, biological identification technology etc., with
The development of science and technology, certificate forge means also in the continuous improvement, and simple certificate false proof technology is no longer satisfied certificate
Anti-fake needs, it is necessary to constantly promote certificate false proof technology, society and the legitimate interests of the people could be protected, maintain the steady of society
Fixed and safety.
Summary of the invention:
In order to improve the reliability and safety of certificate false proof, the present invention is for deficiency existing for existing certificate false proof to existing card
Part anti-counterfeiting technology is improved, and a kind of page stealth invalid code complementation identification anti-counterfeit method of credentials, the method for anti-counterfeit are proposed
A width image in 2 D code is made of two-dimension code anti-counterfeit information, the image in 2 D code is then divided into two parts, and a part is known as
Short in size image, another part are known as complement code image, the complete former two dimension of one width of composition that short in size image and complement code image can be complementary
Code image, complement code image leaves a blank area after dividing away in former image in 2 D code, in order to by short in size image and complement code figure
Size, the size and shape Information hiding of picture are got up, in the blank that complement code image leaves after dividing away in image in 2 D code
Invalid code image is filled in area, so that short in size image and one width of invalid code image construction and former image in 2 D code shape and area phase
With pseudo- image in 2 D code, since the filling of invalid code is so that effective short in size image information contained is hidden, Wu Fatong
It crosses pseudo- image in 2 D code observation to judge, complement code image and its information contained can not be inferred to by pseudo- image in 2 D code,
By complement code printing image on a thin plate key piece, selection one is identical with image in 2 D code size and shape on certificate
Color ink is matched for the former writings and image of certificate on pseudo- image in 2 D code and the region using metamerism on the area in region
Overlapping printing together, generate it is a kind of stealth in the pseudo- image in 2 D code on certificate, in the original text of pseudo- image in 2 D code and certificate
Word and image are overlapped printing zone, show the former writings and image of printing on the area under visible light, show under infrared light
Now print pseudo- image in 2 D code on the area, it is clear that by pseudo- image in 2 D code and thin plate key piece only under infrared light
Upper complement code image merge constitute a width completely former image in 2 D code when, can just be obtained by scanning correct two dimensional code
Information, can be by pseudo- image in 2 D code stealth in any one region on certificate using this method, and this method can identify
Certificate is with the presence or absence of personation infringement problem.
Metamerism typically refers to yellow black four member ink sets of green product into one group of ratio match with color ink, this group of ink exists
It is seen that identical color, i.e., homochromy under visible light；And under infrared light because yellow black four color ink of green product match different productions
The spectral difference that adds lustre to is different to show different colors, i.e., different spectrum, this 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 two-dimensional barcode information, so
The image in 2 D code is divided into two parts afterwards, a part is known as short in size image, and another part is known as complement code image, short in size image
One width of composition that can be complementary with complement code image completely divide away from former image in 2 D code by former image in 2 D code, complement code image
After leave a blank area, in order to which the size of short in size image and complement code image, size and shape Information hiding are got up, in complement code figure
Invalid code image is filled on the blank area that picture leaves after dividing away in image in 2 D code, so that short in size image and invalid code figure
As constituting width puppet image in 2 D code identical with former image in 2 D code shape and area, for will be on pseudo- image in 2 D code and certificate
The overlapping of former writings and image be printed on certificate, adjust the color matching ratio of yellow black four color ink of green product, generate two kinds it is homochromy different
Spectrum matches color ink, the first shows white with color ink under visible light, black is shown under infrared light, second with color ink
Showing black under visible light, white is shown under infrared light, the site for constituting the former writings and image on certificate is divided into two kinds,
One is black site, another kind is white site, and the site for constituting pseudo- image in 2 D code and complement code image is also classified into two kinds, one
Kind is black site, and another kind is white site,
Using color ink is matched by complement code printing image on a thin plate key piece, pseudo- image in 2 D code is printed using color ink is matched
It brushes on a region identical with image in 2 D code size and shape on certificate, generates an image overlapping region, so that
Pseudo- image in 2 D code on the area makes together with the former writings and image overlapping printing on the region certificate
The site of pseudo- image in 2 D code and former writings and image on the image overlapping region coincides together correspondingly, and one is a pair of
The site that should be overlapped can be divided into four classes, and first kind site original text word and image request show white and puppet two under visible light
Dimension code image request also shows white under infrared light, and the second class site original text word and image request show black under visible light
And pseudo- image in 2 D code requires to show white under infrared light, and third class site original text word and image request are shown under visible light
Existing white and pseudo- image in 2 D code requires to show black under infrared light, and the 4th class site original text word and image request are visible
Show black under light and pseudo- image in 2 D code requirement also show black under infrared light, on image overlapping region visible
Former writings and image needs to show white under light and pseudo- image in 2 D code is also required to show the correspondence site of white under infrared light,
Printed using ordinary white ink, on image overlapping region under visible light former writings and image need to show black and
Pseudo- image in 2 D code is also required to show the correspondence site of black under infrared light, is printed using general black ink, for image weight
On folded region former writings and image need to show white under visible light and pseudo- image in 2 D code need to show under infrared light it is black
The correspondence site of color is printed using the first with color ink, and writings and image former on image overlapping region is needed under visible light
Show black and pseudo- image in 2 D code is needed to show white correspondence site under infrared light and printed using second with color ink
Brush.
In truth identification, the complement code image on pseudo- image in 2 D code and thin plate key piece is merged one under infrared light
It rises and constitutes a width completely former image in 2 D code, be then obtained by scanning correct two-dimensional barcode information, this method can reflect
Other certificate is with the presence or absence of personation infringement problem.
Detailed description of the invention
The following further describes the present invention with reference to the drawings.
Fig. 1 image in 2 D code.
Former writings and image on Fig. 2 image overlapping region.
Fig. 3 short in size image.
Fig. 4 complement code image.
Fig. 5 puppet image in 2 D code.
Fig. 6 thin plate key piece and short in size image.
Fig. 7 puppet image in 2 D code Local map corresponding with former writings and image.
Specific embodiment
In Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, a width image in 2 D code 1 is made of two-dimensional barcode information, then
Image in 2 D code 1 is divided into two parts, a part is known as short in size image 3, and another part is known as complement code image 4, short in size image 3
The complementary complete image in 2 D code 1 of one width of composition, complement code image 4 are divided away from former image in 2 D code 1 with complement code image 4
After leave a blank area 5, in order to which the size of short in size image 3 and complement code image 4, size and shape Information hiding are got up, in sky
Invalid code image 6 is filled on white area 5, so that short in size image 3 and invalid code image 6 constitute 1 shape of a width and former image in 2 D code
Puppet image in 2 D code 7 identical with area, for the overlapping of former writings and image 2 on pseudo- image in 2 D code 7 and certificate to be printed on
On certificate, the color matching ratio of yellow black four color ink of green product is adjusted, two kinds is generated and matches color ink, the first is with color ink in visible light
Under show white, show black under infrared light, show black under visible light with color ink second, show under infrared light
White, the site for constituting the former writings and image 2 on certificate are divided into two kinds, and one is black site, another kind is white site,
The site for constituting pseudo- image in 2 D code 7 is also classified into two kinds, and one is black site, another kind is white site.
Complement code image 4 is printed on a piece of thin plate key piece 8 using common ink, using with color ink by pseudo- two dimensional code
On the region identical with 1 size and shape of image in 2 D code that image 7 is printed on certificate, an image overlay region is generated
Domain, so that the overlapping of the former writings and image 2 of pseudo- image in 2 D code 7 on the area and certificate on the area is printed on one
It rises, and the site of pseudo- image in 2 D code 7 and former writings and image 2 on the image overlapping region is overlapped correspondingly
Together, the site for corresponding coincidence can be divided into four classes, and the former writings and image 2 in first kind site 9 requires under visible light
Show white and pseudo- image in 2 D code 7 requires also to show white under infrared light, the former writings and image 2 in the second class site 10 is wanted
It asks and shows white under visible light and pseudo- image in 2 D code 7 requires to show black, 11 original text of third class site under infrared light
Word and image 2 require to show black under visible light and pseudo- image in 2 D code 7 requires to show white, the 4th class under infrared light
The former writings and image 2 in site 12 requires to show black under visible light and pseudo- image in 2 D code 7 requires also to show under infrared light
Existing black.Need to show white and pseudo- image in 2 D code 7 under visible light for the former writings and image 2 on image overlapping region
It is also required to show the first kind site 9 of white under infrared light, be printed using ordinary white ink, on image overlapping region
Former writings and image 2 need to show black under visible light and pseudo- image in 2 D code 7 is also required to show black under infrared light
The 4th class site 12, printed using general black ink, under visible light for writings and image 2 former on image overlapping region
It needs to show white and pseudo- image in 2 D code 7 needs to show the second class site 10 of black using the first color matching under infrared light
Ink printing needs to show under visible light black and pseudo- image in 2 D code 7 for writings and image 2 former on image overlapping region
It is printed using second with color ink the third class site 11 for needing to show white under infrared light.
It is overlapped printing zone in the former writings and image 2 of pseudo- image in 2 D code 7 and certificate, shows be printed under visible light
Former writings and image 2 on the region shows the pseudo- image in 2 D code 7 of printing on the area under infrared light, utilizes the party
Method can be stealthy in any one region on certificate by pseudo- image in 2 D code 7.
In truth identification, complement code image 4 on pseudo- image in 2 D code 7 and thin plate key piece 8 is merged under infrared light
The complete image in 2 D code 1 of a width is constituted together, is then obtained by scanning correct two-dimensional barcode information, and this method can reflect
Other certificate is with the presence or absence of personation infringement problem.
Claims (5)
1. a kind of page stealth invalid code complementation identifies anti-counterfeit method of credentials, it is characterized in that: will be made of two-dimension code anti-counterfeit information
One width image in 2 D code is divided into two parts, and a part is known as short in size image, and another part is known as complement code image, short in size image and
The complete image in 2 D code of one width of composition of complement code image complementation, leaves after dividing away in image in 2 D code in complement code image
Blank area on fill invalid code image so that short in size image and one width of invalid code image construction and former image in 2 D code shape and
The identical pseudo- image in 2 D code of area selects one and two by complement code printing image on a piece of thin plate key piece on certificate
The identical region of code image size and shape is tieed up, by pseudo- image in 2 D code and is somebody's turn to do using metamerism with color ink on the area
On region the former writings and image overlapping printing of certificate together, generate it is a kind of stealthy in the pseudo- image in 2 D code on certificate,
The former writings and image of pseudo- image in 2 D code and the page is overlapped printing zone, shows the original of printing on the area under visible light
Writings and image shows the pseudo- image in 2 D code of printing on the area under infrared light, can be by pseudo- two dimension using this method
Code Invisible Image is in any one region on certificate.
2. page stealth invalid code complementation according to claim 1 identifies anti-counterfeit method of credentials, it is characterized in that: in complement code figure
Invalid code image is filled on the blank area that picture leaves after dividing away in image in 2 D code, so that short in size image and invalid code figure
As constituting a width pseudo- image in 2 D code identical with former image in 2 D code shape and area, since the filling of invalid code is so that effectively
Short in size image size, size, shape and information contained be hidden, can not by pseudo- image in 2 D code observe judge
Come, size, size, shape and the information contained of complement code image can not be inferred to by pseudo- image in 2 D code.
3. page stealth invalid code complementation according to claim 1 identifies anti-counterfeit method of credentials, it is characterized in that: adjusting green product
The color matching ratio of yellow black four color ink generates two kinds of metamerisms with color ink, the first shows under visible light with color ink
White, shows black under infrared light, shows black under visible light with color ink second, shows white under infrared light.
4. page stealth invalid code complementation according to claim 1 identifies anti-counterfeit method of credentials, it is characterized in that: utilizing color matching
On the region identical with image in 2 D code size and shape that pseudo- image in 2 D code is printed on certificate by ink, one is generated
A image overlapping region, so that the former writings and image weight of pseudo- image in 2 D code on the area and certificate on the area
Double exposure brush together, and makes one a pair of site of the pseudo- image in 2 D code and former writings and image on the image overlapping region
That answers coincides together, and the site for corresponding coincidence can be divided into four classes, first kind site original text word and image request can
Show white under light-exposed and pseudo- image in 2 D code requirement also shows white, the second class site original writings and image under infrared light
It is required that showing black under visible light and pseudo- image in 2 D code requirement shows white, third class site original text word under infrared light
Show white under visible light with image request and pseudo- image in 2 D code requirement shows black, the 4th class site under infrared light
Original text word and image request show black under visible light and pseudo- image in 2 D code requirement also shows black under infrared light.
5. anti-counterfeit method of credentials is identified with page stealth invalid code complementation according to claim 3 according to claim 1,
Be characterized in: first kind site is printed using ordinary white ink, and the second class site is printed using second with color ink, third class
Site is printed using the first with color ink, and the 4th class site is printed using general black ink.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811566159.4A CN109697492A (en) | 2018-12-21 | 2018-12-21 | Page stealth invalid code complementation identifies anti-counterfeit method of credentials |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811566159.4A CN109697492A (en) | 2018-12-21 | 2018-12-21 | Page stealth invalid code complementation identifies anti-counterfeit method of credentials |
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| CN107206829A (en) * | 2015-02-19 | 2017-09-26 | 特洛伊集团公司 | The method for protecting invisible 2D bar codes and print image |
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2018
- 2018-12-21 CN CN201811566159.4A patent/CN109697492A/en active Pending
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|---|---|---|---|---|
| US20060022059A1 (en) * | 2004-08-02 | 2006-02-02 | Scott Juds | Coaligned bar codes and validation means |
| CN204440410U (en) * | 2014-12-23 | 2015-07-01 | 江苏工程职业技术学院 | A kind of splitting type two-dimension code anti-counterfeit structure |
| CN107206829A (en) * | 2015-02-19 | 2017-09-26 | 特洛伊集团公司 | The method for protecting invisible 2D bar codes and print image |
| CN106097882A (en) * | 2016-03-25 | 2016-11-09 | 立德高科（昆山）数码科技有限责任公司 | With interference layer combination mark and generate method with generate system |
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