CN107578079A - A kind of method for anti-counterfeit that high-fidelity is carried out in information code region and hides figure - Google Patents
A kind of method for anti-counterfeit that high-fidelity is carried out in information code region and hides figure Download PDFInfo
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- CN107578079A CN107578079A CN201710841997.7A CN201710841997A CN107578079A CN 107578079 A CN107578079 A CN 107578079A CN 201710841997 A CN201710841997 A CN 201710841997A CN 107578079 A CN107578079 A CN 107578079A
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Abstract
The present invention provides a kind of method for anti-counterfeit that high-fidelity is carried out in information code region and hides figure, is related to anti-counterfeiting printing technology field.This method includes：By the table figure being partially or fully adjusted to for the suitable Tibetan figure after the optimization of specific print system in information code region, as graph region is hidden, obtain comprising the information code table figure for hiding graph region；Hiding base map will be needed to carry out false proof Tibetan figure linked network and printing with the specific print system in the Tibetan graph region；When carrying out color separation, linked network, printing, graph region at least one color separation in Tibetan is partially or fully halftoning.The method of the present invention, does not influence the recognition and detection of information code barcode scanning machine or mobile phone etc., while can enter one or more layers base map in information code region Xia Zang.The information code of table figure can be distinguished with conventional meanses, and base map can be detected with hiding the corresponding optical instrument of figure, scanning means or mobile phone recognition, so as to reach false proof purpose.
Description
Technical field
The present invention relates to anti-counterfeiting printing technology field, more particularly to a kind of high-fidelity that carried out in information code region to hide the anti-of figure
Fake method.
Background technology
Information code refers to that the printing comprising information that each class set coding, printing, identification, data acquisition and processing (DAP) are integrated is compiled
Code, including common bar code, Quick Response Code and other associated code classes.
Bar code or bar code (barcode) are to arrange the multiple secret notes and blank of width not etc. according to certain coding rule
Row, to express the graphical identifier of a group information.General commodity bar code is typically by prefix part, manufacturer's code, business
Product code and check code composition.
Quick Response Code (2-dimensional barcode) is according to certain rules in plane with certain specific geometric figure
The chequered with black and white figure of (on two-dimensional directional) distribution, for record data symbolic information；Composition meter is utilized on coding
" 0 ", the concept of " 1 " bit stream on calculation machine internal logic basis, carry out table using several geometrical bodies corresponding with binary system
Show word numerical information, by image input device or photoelectric scanning device automatically identifying and reading to realize that information automatically processes, it has
There are some general character of barcode technology, every kind of code system has its specific character set；Each character occupies certain width；With certain
Verifying function etc..Also there is the information automatic identification function and the processing rotationally-varying point of figure to not going together simultaneously.
The application of information code is very universal, be currently widely used for product packaging, product identification, link redirection, file,
Certificate, bill etc..Therefore, false proof protection is carried out to information code region if can realize, it is possible to accompanying by information code
Packaging, product, file, certificate, bill etc. carry out false proof protection.
Information code (mainly including bar code, Quick Response Code at present) itself has very strong false proof demand, as mobile communication is set
The popularization of standby, mobile Internet, novel interactive communication modes, barcode scanning is unlocked, barcode scanning links, barcode scanning link redirects, barcode scanning branch
Paying turns into a part for daily life, but the information code (bar code, Quick Response Code) that these barcode scanning behaviors may be all counterfeited is taken advantage of
Deceive.The figure of information code optimizes for machine recognition, and ordinary person can not understand.Be not added with protection information code be very likely replaced,
Distort, so as to be used to user cheating.Therefore, the false proof protection to information code in itself, that is, the letter carried to information code
The protection of breath, it is more significant.
The existing considerably long history of technology of other images or information is hidden in the Biao Tuli of printing, is widely used in
Anti-counterfeit field.The image for the actual displayed that observer can see is referred to as table figure；By particular technology be hidden in it is under table figure,
Image that is that naked eyes can not be differentiated and just can see by corresponding detection means, information or information code are referred to as base map；By base map
It is hidden in the process under table figure and is referred to as Tibetan figure.Existing Tibetan diagram technology is varied, and most of is to be based on digital linked network, there is net
Shield angle modulated, site frequency modulation(PFM), network cable frequency modulation, dot shape modulation, netting twine phase-modulation, site phase-modulation,
The methods of two-way site (netting twine) phase-modulation, dynamic mole line.The general principle of these methods is：The reference initial from one
Net point net screen system structure starts, and is required according to figure is hidden, and according to the figure for hiding figure, the system architecture with reference to site screen is carried out
Modulation, size of the modulator approach including site, shape, black and white, position, phase, density, frequency, angle etc..High-fidelity hides figure side
Method hides the bottom of one or more layers high definition in the case where keeping table figure high-fidelity under the black and white of high-quality or color table figure
Figure, most representational high-fidelity, which hides diagram technology, includes the SI technologies of Graphics Security System companies, JURA public affairs
The high-fidelity that the ICI technologies and number of patent application of department are 201610519053.3 and 201610518384.5, which is hidden, schemes digital linked network skill
Art.
The purpose of conventional antiforge is anti-emulation, that is, prevents puppet from producing similar or the same printed matter, therefore, it stresses
Point replicates in anti-copy, anti-high definition scan rebuilding, anti-counterfeiting.The characteristic of Tibetan figure anti-counterfeiting technology determines it in anti-emulation and anti-letter
The double dominant distorted is ceased, is also a very effective method to preventing information code information to be tampered or illegally changing, but
Its technology is limited in that Tibetan figure is only applicable to the half-tone regions of table figure.The information codes such as bar code, Quick Response Code, in order to detect
It is general using maximum contrast with the convenience of recognition, it is imprinted on white (or the blank base of light color with black (or pure dark color)
Material) background on.Therefore, generally, the information code such as conventional bar code, Quick Response Code area can not be used directly in by hiding diagram technology
Domain.
The content of the invention
The technical problem to be solved in the present invention is to be directed to above-mentioned the deficiencies in the prior art, there is provided one kind is entered in information code region
Row high-fidelity hides the method for anti-counterfeit of figure, does not influence the recognition and detection of information code barcode scanning machine or mobile phone etc., while can be
Information code region Xia Zang enters one or more layers base map.The information code of table figure can be distinguished with conventional meanses, base map can with Tibetan
Corresponding optical instrument, scanning means or mobile phone recognition detection are schemed, so as to reach false proof purpose.
In order to solve the above technical problems, the technical solution used in the present invention is：
A kind of method for anti-counterfeit that high-fidelity is carried out in information code region and hides figure, this method includes, in information code region table figure
Partially or fully region carry out false proof Tibetan figure linked network and printing, hide one or more layers base map, the Tibetan graph region be included in
Halftoning area coverage in a few color separation is more than or equal to the 1%, region less than or equal to 99%.
Further, the Tibetan graph region includes partial information code background area, full detail code background area, part letter
Cease code darker regions, full detail code darker regions or whole information code region.
Further, if the Tibetan graph region includes part or all of information code background area, described information code table
Figure is table figure of the background containing base map, and the context table figure during part or all of information code darker regions difference with printing, context table figure
Printing be prior to or subsequent to the printings of information code darker regions, the printings of information code darker regions and context table figure close to or again
It is folded.
Further, described information code table figure, a certain background or background image are divided into depth by using information code pattern
Color area and light area, dark area and light area are then subjected to different images respectively and convert acquisition；Described image conversion includes
But a kind of conversion or the combination of a variety of conversion being not limited in color transformed, greyscale transformation and the adjustment of tone or replacement.
Further, the base map includes the character string information or pattern characteristics of at least a portion information code.
Further, the base map is when being detected recognition, detect the information of base map and the information code information of table figure or
Information code pattern is compared.
Further, if base map includes the pattern characteristics of at least a portion information code, the base map is being detected knowledge
During reading, the information code pattern of table figure and at least a portion information code pattern of base map show simultaneously, and formation compares simultaneously.
Further, if base map includes the pattern characteristics of at least a portion information code, the base map is being detected knowledge
During reading, the information code pattern of table figure and at least a portion information code pattern of base map close to or contact, form geometric proportion pair, it is described
Geometry alignments include but is not limited in translation, mirror image, symmetrical, inverting, rotation, scaling, shearing, distortion it is a kind of convert or
The combination of a variety of conversion.
Further, the detection reading method of the base map includes but is not limited to optical instrument recognition, takes pictures or scan and know
Read, machine recognition or mobile phone are distinguished.
Further, described Tibetan figure is using the height based on the high-fidelity Tibetan figure net hanging method directly corrected or based on screen
Fidelity hides figure net hanging method.
It is using beneficial effect caused by above-mentioned technical proposal：It is provided by the invention a kind of in the progress of information code region
High-fidelity hides the method for anti-counterfeit of figure, by carrying out the optimization of image procossing to the figure in information code region and immediate area, makes it
It is suitable for false proof Tibetan figure, while ensures that the information code of its table figure can be distinguished by conventional method；Further hidden base map is carried out
Optimization, according to the content and pattern of table figure information code, by creating or converting, make have partial graphical or content and table figure in base map
Form association or compare, form the one-to-one corresponding of table figure and base map, further strengthen false proof effect.Information code provided by the invention
Method for anti-counterfeit be a kind of information code antiforge mode, do not influence information code barcode scanning machine or mobile phone etc. normal recognition and
Detection, while one or more layers base map can be entered in information code region Xia Zang, can be with hiding the corresponding optical instrument of figure, scanning
Means detect or mobile phone recognition base map, so as to reach false proof purpose.
Brief description of the drawings
Fig. 1 is the method for anti-counterfeit flow chart provided in an embodiment of the present invention that high-fidelity is carried out in information code region and hides figure.
Embodiment
With reference to the accompanying drawings and examples, the embodiment of the present invention is described in further detail.Implement below
Example is used to illustrate the present invention, but is not limited to the scope of the present invention.
A kind of method for anti-counterfeit that high-fidelity is carried out in information code region and hides figure, as shown in figure 1, specific method is as described below.
Step 1：The information that arrangement information code is included, including but not limited to station address, web site url, public number
One or more in location, public number link, telephone number, variable code, spelling words intellectual and numeral combination etc., above- mentioned information is led to
Cross information code generator (such as bar code, two-dimension code generator) generation information code (such as bar code, Quick Response Code) pattern.
Step 2：The information code pattern of generation is carried out into respective image to handle to obtain the information code table figure and one for being adapted to Tibetan figure
Layer or multilayer base map.
Obtain being adapted to the method for information code table figure of Tibetan figure be：
Step a：The information code pattern of generation is divided into information code pattern black region and information code patterned background region, its
Middle black region can also be other darker regions, contain the feature of information code, be that can distinguish part；Background area is generally
White；
Step b：Information code pattern black region is entered into line translation, line translation is entered into information code patterned background region, is converted
Method includes but is not limited to the combination of greyscale transformation, a kind of color transformed, in image conversion mode or various ways；After conversion
Information code pattern black region be changed into darker regions pattern, the information code patterned background region after conversion is changed into light areas figure
Case；
Step c：Darker regions pattern and light areas pattern are synthesized, obtain the information code table figure halftoning for being adapted to Tibetan figure
Pattern.
Hidden image or information are generally modulated come real by pressing certain specific mode to the halftone screen of printed matter
Existing, therefore, the supporting body of hiding image or information is halftone dot (or line).Can only be in printing that is, hiding figure
Realize that color area can not hide figure by site modulation in clear area or on the spot, in very close blank in halftone dot area
Or on the spot in the color of color, figure effect (contrast) is hidden also by a definite limitation.
Conventional most of print systems do not possess real intrinsic expressing gradation ability, can only realize black or inkless two
Individual color range, such as offset printing, flexo etc., in order to a width be there is the chart of gray scale now on certain base material (such as paper), the skill of linked network
Art makes possibility.Pure color on the spot, black area coverage are 100%.White space, completely inkless, black area covers
Lid rate is 0%.Gray-level between then needs to realize by the change of halftone screen dot coverage, such as 1% arrives
99%.Therefore, macroscopical gray scale is reached by the area coverage of microcosmic upper halftone dot.
Such as conventional four colors print, with tetra- kinds of basic colors of cmyk, pass through the combination of four kinds of colors and its halftoning
Superposition, it is possible to print out all colours in the colour gamut of the system.But some regions of the wherein colour gamut are unsuitable
Figure is hidden, such as clear area, pure cmyk areas and pure color are superimposed area c+m, m+y, c+y etc..Such as spot color printing again, in spot color
Color region can not realize Tibetan figure on the spot.Therefore, combined for specific print system, including the color of its ink, before print
Color separation method etc., can all have some color areas or scope (color on the spot, clear area, very dark color for being not suitable for Tibetan figures
Deng).If the region that the whole of image or most region are all not suitable for Tibetan figure by these forms, Tibetan figure will be unable to reality
Existing, ineffective or antiforge function is lost.
Therefore, the main criterion of the table figure Optimization Steps is exactly to predict during follow-up linked network Plate making printing, the letter
Cease whether the halftoning (size, the intensity of halftoning, superposition of color separation etc.) in code image-region is adapted to hide figure, together
When, the information code pattern of guarantee table figure has enough contrast and uniformity again, passes through machine recognition.
For hiding diagram technology, dot area coverage can be realized between 1% to 99%.Wherein, close to semi-tone
Contrast is most strong when (close to 50%).For machine recognition, such as scan, take a picture, the graphical analysis means such as handset identity, recognition
The ability of detection base map can expand to very wide halftoning scope, such as whole 1% to 99% halftoning.
With reference to several instance analysis in specific implementation, to obtain the optimization for being adapted to the information code table figure of Tibetan figure to carry out
Processing.
Table figure optimal enforcement example one
Halftoning is used in information code background area, figure is hidden in the halftoning background.Preferably light background, Ke Yishi
It is colored.The printing of information and background can be completed once, can also it is first printed containing hide figure background, in due course, then
Information code etc. is stamped in the information code area of background out of the press.This method printed twice especially suitable for variable information code i.e.
When input spray printing or printing.Background printing in advance can only be imprinted on the information code background area being expected in advance, leave information
Code black or darker regions, used to the second printing.Background in advance, which is printed, can also cover whole information code region, and second
During secondary printing, another layer of mass colour is superimposed with information code darker regions.
Table figure optimal enforcement example two
The dark color on the spot of information code is replaced, is printed with the halftoning of dark color, entered in the halftoning area
Conduct figure.For example, bar code is printed with the halftoning of 80% black, in the case where not influenceing machine recognition completely, to dark color
The halftoning of lines is modulated Tibetan figure, just has enough spaces to hide the Arabic number into whole bar code in a thick line of bar code
Word.
Table figure optimal enforcement example three
The darker regions and light areas of information code are not necessarily intended to the color of Seeking Truth substantially uniformity, under certain condition, only
Dark area and light area is wanted to keep enough contrasts, while (darker regions and light areas) keeps low in respective region
Contrast, the recognition of information code would not be caused to upset.For example, dark area's tonal range is 60%~100% image,
Light areas tonal range is 0%~30% image.For another example background is the halftoning of shallow mass colour, such as Y (Huang)
70%, the halftoning of dark area's raven, such as the 50% of K (black).Further, can be from the color table figure of a width independence
Start, information code is overlapping up to its subregion progress image procossing, to the color burn in the dark area of information code, to light area
The color dodge in domain, so as to form an information code image for there are enough contrasts, reach the requirement of suitable false proof Tibetan figure.
To ensure the authenticity of information code, the further copy table figure information digital content in base map of the invention, for follow-up step
Rapid 5 comparison lays the first stone.In order to compare accurately and easily, when detecting base map, ensure that base map and Biao Tu show simultaneously as far as possible
It is existing, corresponding comparison figure text overlays or close to, with reach simultaneously, complete Determination together.
The method for obtaining base map is：
The information code pattern of generation is entered into line translation, mapping mode includes but is not limited to translation, shearing, scaling, mirror image etc.
The combination of a kind of mode or various ways in mode, together with the image hiding with other needs of the information code pattern after conversion
Form one or more layers base map.
With reference to several instance analysis in specific implementation, to strengthen the base map optimization that antiforge function is carried out.
Base map optimal enforcement example one
Information compares.The information code information that can be distinguished to ordinary person, such as the Arabic numerals under bar code, can be in base map
In replicate a, ensconce in information code area.For the information, different font, size etc. can be used in base map table figure,
It is exactly that figure is not necessarily the same or similar, but content is consistent or part is consistent.
Base map optimal enforcement example two
Figure compares.The information that can not be distinguished to ordinary person, such as when hiding figure to the graph image of Quick Response Code, bar code, can be with
Ensconce the immediate area of its corresponding table figure, during detection, Biao Tu and Tibetan figure show simultaneously, and close to, it is easy to carry out pattern ratio
It is right, so as to discern the false from the genuine.Such as bar code, can with bar shaped immediately above or lower section, hide in translation in background area (or
Under) come bar paten duplicating image.Such as Quick Response Code again, can be raw using a line of Quick Response Code black region as reflected ray
Into the Quick Response Code mirror image as base map, hide the light areas into Quick Response Code.During detection, table figure pattern and base map pattern are same
When occur with ground with mirror image, formed it is perfect compare, particularly leaning on symmetry close to the periphery of reflected ray, the contrast judgement of image
Can is very clear.
Two kinds of convenient figure alignments, other geometry deformations, for example, translation, inverting, rotation are simply illustrated above
Turn, scaling, mirror image, a variety of conversion such as distortion and its comprehensive comparison for using, may serve to optimize Tibetan figure and base map, reach fast
Fast Determination exactly.
Step 3：The table figure of the information code of suitable Tibetan figure and one or more layers base map are subjected to high-fidelity and hide figure linked network, print
Brush, obtains the printed matter containing base map.The high-fidelity hides diagram technology and includes but is not limited to existing Tibetan diagram technology, such as based on straight
Connect amendment the digital net hanging method of high-fidelity Tibetan figure and system (application number 201610519053.3), based on high-fidelity hide figure screen
Digital net hanging method and system (application number 201610518384.5), the SI skills of Graphics Security System companies
Art, ICI technologies of JURA companies etc..
Step 4：The Biao Tuli of Tibetan figure printed matter containing information code hidden when containing linked network into one or more stealthy bottoms
Figure, the detection means corresponding with hiding graphic operation is selected to carry out the base map of detection of concealed；Detection means includes but is not limited to mobile phone knowledge
Reading, machine recognition, scanning, special lighting, special observation angle or special optical instrument etc., most commonly seen Tibetan figure and detection side
Method is with a kind of transparent optical film or plate, is covered on table figure, rotating transparent optical film or plate, when position angle is suitable, i.e.,
Can detection Tibetan figure.
Step 5：The Tibetan figure of detection is compared with former table figure information code, and the information of comparison includes but is not limited to information word
Symbol, pattern and/or shape, if compared successfully, the carrier with the information code is genuine piece, the information of the information code not by
Change, if comparison is unsuccessful, the carrier with the information code has been altered for the information of adulterant or the information code.
The present invention provides the antiforge mode of a kind of information code (including but is not limited to bar code, Quick Response Code), does not influence to believe
The recognition and detection of code machine or mobile phone are ceased, while one or more layers base map can be entered in information code region Xia Zang.Table figure
Information code can be distinguished with conventional meanses, such as scanning machine or mobile phone, base map can with hide the corresponding optical instrument of figure, including
But Scanning Detction or mobile phone recognition are not limited to, so as to reach false proof purpose.The present invention can not only differentiate with the information code
Carrier it is true and false, but also can verify whether the information of the information code true in itself.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, either which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from the claims in the present invention and limited
Fixed scope.
Claims (10)
- A kind of 1. method for anti-counterfeit that high-fidelity is carried out in information code region and hides figure, it is characterised in that：This method includes, in information code The partially or fully region of region table figure carries out false proof Tibetan figure linked network and printing, hides one or more layers base map, the Tibetan graph region The halftoning area coverage being included at least one color separation is more than or equal to the 1%, region less than or equal to 99%.
- 2. the method for anti-counterfeit according to claim 1 that high-fidelity is carried out in information code region and hides figure, it is characterised in that：It is described Hiding graph region includes partial information code background area, full detail code background area, partial information code darker regions, full detail Code darker regions or whole information code region.
- 3. the method for anti-counterfeit according to claim 2 that high-fidelity is carried out in information code region and hides figure, it is characterised in that：It is described If hiding graph region includes part or all of information code background area, described information code table figure is table figure of the background containing base map, For the context table figure with being printed during part or all of information code darker regions difference, the printing of context table figure is prior to or subsequent to information code The printing of darker regions, the printings of information code darker regions and context table figure close to or it is overlapping.
- 4. the method for anti-counterfeit according to claim 1 that high-fidelity is carried out in information code region and hides figure, it is characterised in that：It is described Information code table figure, a certain background or background image are divided into dark area and light area by using information code pattern, then will be deep Color area and light area carry out different image conversion and obtained respectively；Described image converts including but not limited to color transformed, gray scale Conversion and a kind of conversion or the combination of a variety of conversion in the adjustment or replacement of tone.
- 5. the method for anti-counterfeit according to claim 1 that high-fidelity is carried out in information code region and hides figure, it is characterised in that：It is described Base map includes the character string information or pattern characteristics of at least a portion information code.
- 6. the method for anti-counterfeit according to claim 5 that high-fidelity is carried out in information code region and hides figure, it is characterised in that：It is described Base map detects that the information of base map is compared with the information code information of table figure or information code pattern when being detected recognition.
- 7. the method for anti-counterfeit according to claim 6 that high-fidelity is carried out in information code region and hides figure, it is characterised in that：If Base map includes the pattern characteristics of at least a portion information code, then the base map is when being detected recognition, the information code pattern of table figure At least a portion information code pattern for being hidden with base map while show, formation compares simultaneously.
- 8. the method for anti-counterfeit according to claim 6 that high-fidelity is carried out in information code region and hides figure, it is characterised in that：If Base map includes the pattern characteristics of at least a portion information code, then the base map is when being detected recognition, the information code pattern of table figure With at least a portion information code pattern of base map close to or contact, form geometric proportion pair, the geometry alignments are included but not It is limited to the combination of translation, mirror image, symmetrical, inverting, rotation, scaling, shearing, a kind of conversion in distortion or a variety of conversion.
- 9. the method for anti-counterfeit that high-fidelity is carried out in information code region and hides figure according to claim 6,7 or 8, its feature exist In：The detection reading method of the base map includes but is not limited to optical instrument recognition, takes pictures or scans recognition, machine is distinguished or hand Machine is distinguished.
- 10. the method for anti-counterfeit according to claim 1 that high-fidelity is carried out in information code region and hides figure, it is characterised in that：Institute The Tibetan figure stated is using the high-fidelity Tibetan figure net hanging method based on the high-fidelity Tibetan figure net hanging method directly corrected or based on screen.
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| CN111739407B (en) * | 2020-06-12 | 2022-05-31 | 珠海市蓝海防伪包装科技有限公司 | Anti-fake medicine packing carton of data ization printing |
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