CN103903216B - Determination method based on raster anti-fake concealed image vector diagram line width - Google Patents
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Abstract
The invention discloses a determination method based on a raster anti-fake concealed image vector diagram line width. The method includes the steps that a vector diagram with a certain line width is manufactured, a background color lump of the same size with the vector diagram is established, four channels are separated and are screened respectively, and the shape of screen dots is round; the vector diagram is embedded into a certain channel of the background color lump to form a concealed layer; a screen spot mathematic relation of the vector diagram line width and the background color lump is established; a line width is selected to make the embedded vector diagram with the corresponding width according to the mathematic relation, the embedded vector diagram with the corresponding width is embedded into the certain channel of the background color lump to form the concealed layer, and the four channels are combined, and a concealed image containing concealed information is finally formed. A simulation raster layer matched with the background color lump is added into the Photoshop, and concealed information in the concealed image of the background color lump is shown.
Description
Technical field
The invention belongs to image concealing technology field is and in particular to a kind of be based on the false proof hidden image of grating in antiforge
The determination method of polar plot line thickness.
Background technology
Grating is false proof, and method is simple, does not have too high requirement to equipment and typography, does not increase production cost
In the case of can reach false proof purpose, thus grating false proof be a kind of very promising method for anti-counterfeit.
It to be to combine the anti-counterfeiting technology of generation based on halftone screen technology and grating optical characteristics that grating is false proof.Wherein scheme
The hiding skew that can be by site of picture is realizing, and will be related to the embedded of hiding information among these, works as introducing
Be line type polar plot when, the width of lines affects less on the concealment effect of image, but it can affect hidden image
Manifest effect, especially when lines width ratio is relatively fine, can cause finally to be hidden the unintelligible or letter that information manifests
How the loss of breath, select to hide polar plot line thickness, have important production meaning, institute for the quality improving antiforge
Extremely it is necessary with the determination method finding the polar plot line thickness in hidden image.
Content of the invention
It is an object of the invention to provide a kind of determination method based on grating false proof hidden image polar plot line thickness, make
Grating false proof in embedded manifesting of polar plot hiding information reach preferable effect.
The technical solution adopted in the present invention is, a kind of determination based on grating false proof hidden image polar plot line thickness
Method, specifically implements according to following steps:
Step 1, sets the lines of one fixed width, makes the polar plot that will embed background color lump；
Step 2, sets up the background color lump equivalently-sized with polar plot, and blue or green c, pinkish red m, yellow y, tetra- passages of black k are entered
Row separates, and is processed with self-defined screening function respectively, and dot shape is circular；
Step 3, forms in a certain passage of the embedded background color lump of polar plot that step 1 is made and hides Layers；
Step 4, makes vector graph line and the site of background color lump be in same interface, then to polar plot line thickness and the back of the body
Mathematical relationship is set up in the site of scenery block；
Step 5, selects line thickness according to the mathematical relationship in step 4, makes the embedded polar plot of respective width；
Step 6, with step 3, the polar plot that step 5 is made is embedded into be formed in a certain passage of background color lump hides figure
Layer, four passages are merged, and form the final hidden image containing hiding information；
Step 7, middle in photoshop adds the simulation grating figure layer that matches with background color lump so as to hidden image
In hiding information manifest.
The feature of the present invention also resides in,
The polar plot that step 1 makes: be that 0.1mm～0.5mm makees an arrow first in coreldraw software line thickness
Spirogram, canvas size is 1～10cm × 1～10cm, and to save as ai form be to open in photoshop, to embed hidden
Hide figure layer.
It is to set up a background color lump as polar plot size in photoshop that step 2 sets up background color lump, point
Resolution is 350dpi～2800dpi, is cmyk color mode, and foreground c, m, y, k dot area percentage 20%～60%；To c, m,
Tetra- passages of y, k carry out separating, and respectively it are carried out with screening, and wherein screen frequency is 80lpi～200lpi, and dot shape is
Circular.
Hide Layers in step 3 is formed by following process: the polar plot that step 1 is made is in photoshop
In open, rasterizing parameter is consistent with the relevant parameter of Background, activate image constituency, be dragged into background color lump c, m, y, k its
In in a passage figure layer and again activate constituency, then delete this figure layer, only remain the profile of polar plot, then by picture
Scaling is amplified to maximum, with mobile instrument, constituency is carried out certain skew, material is thus formed hiding of a certain passage
Figure layer.
The mathematical relationship process setting up polar plot line thickness in step 4 with the site of background color lump is: with level as base
Standard, the direction of vector line thickness and the angle of level are α, and screen angle is β, then the direction of vector line thickness and screening side
To angle γ be β-α；Then with γ for one jiao, set up in the right angled triangle of a width of right-angle side of lines line thickness d with
On screening direction, the relation apart from d is
d=dcosγ=dcos(β-α)
And in order that its continuity of manifesting after plus simulation grating, then require
d≥2a=2×25.4/l
There is a=25.4/l again
Wherein, a is the length of side that mesh adjusts unit, and l is screen frequency, and 25.4 are one inch is equal to 25.4mm；
And then have d >=2 × 25.4/l cos γ.
When selecting polar plot line thickness it is contemplated that the lines differing with horizontal direction angle will be ensured in step 5
Can be continuous when width finally shows, then here takes the maximum of cos γ is 1, and then at this moment line thickness is:
d≥2×25.4/l.
In step 7, simulation grating makes size, the resolution ratio one being mainly newly-built in photoshop and background color lump
The grayscale mode file of sample, the foreground dot area percentage of filling is 20%～60%, the screen screening of line of going forward side by side, and screening
Line number is the same with the screen frequency of background color lump, activates black netting twine constituency, is dragged to hidden image file with mobile instrument
In, form new figure layer, hiding information is manifested.
The invention has the beneficial effects as follows, the determination side based on grating false proof hidden image polar plot line thickness for the present invention
Method, by determining polar plot line thickness and background color lump by hiding of the false proof middle hidden image of grating with the principle manifesting
The mathematical relationship of site, and finally to determine polar plot line thickness with reference to the relevant parameter of site；Present invention determine that polar plot
The mathematic(al) representation of line thickness intuitively easily calculates, and can quickly determine corresponding result according to different situations, so that light
During grid are false proof, embedded manifesting of polar plot hiding information can reach preferable effect, improves the false proof quality of grating.
Brief description
Fig. 1 is the mathematics geometrical analysis figure of polar plot line thickness and the site of background color lump；
Fig. 2 is the scaling that the hidden image that embodiment 1 polar plot embeds manifests is 10% design sketch；
Fig. 3 is the scaling that the hidden image that embodiment 1 polar plot embeds manifests is 150% design sketch.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and detailed description.
The present invention based on the false proof hidden image of grating embed polar plot line thickness determination method, specifically according to
Lower step is implemented:
(1) make polar plot.It is that 0.1mm～0.5mm does a vector first in coreldraw software line thickness
Figure, canvas size is (1-10) cm × (1-10) cm, and to save as ai form be to open in photoshop, to embed hidden
Hide figure layer.
(2) set up a background color lump in photoshop.As polar plot size, resolution ratio is its size
350dpi～2800dpi, is cmyk color mode, and foreground c, m, y, k dot area percentage 20%～60%.It is carried out c, m,
The separation of tetra- passages of y, k, and each passage is carried out with screening, wherein screen frequency is 80lpi～200lpi, and dot shape is
Circular.
(3) make and hide Layers.The polar plot that (1) is made is opened in photoshop, rasterizing parameter and Background
Relevant parameter consistent, activate image constituency, and drag it in some the passage figure layer in background color lump with movement instrument,
Activation constituency, and delete this figure layer, retain the profile of polar plot.Again the scaling of photoshop is amplified to maximum, with moving
Constituency is carried out certain skew by power driven tools, material is thus formed hiding Layers of a certain passage.
(4) according to the manufacturing process hiding Layers, set up the mathematics of vector graph line and the relation of site of background color lump
Geometric figure, as shown in figure 1, on the basis of level, the direction of vector line thickness and the angle of level are α, and screen angle is
β, then the direction of vector line thickness and the angle γ in screening direction are β-α；Then with γ for one jiao, a width of right-angle side of lines
Right angled triangle in set up the relation apart from d on line thickness d and screening direction and be
d=dcosγ=dcos(β-α)
And in order that its continuity of manifesting after plus simulation grating, then require
d≥2a=2×25.4/l
There is a=25.4/l (mm) again
Wherein, a is the length of side that mesh adjusts unit, and l is screen frequency, and 25.4 are one inch is equal to 25.4mm；
And then have d >=2 × 25.4/l cos γ.
(5) line thickness is selected according to the mathematical relationship in step 4, make the embedded polar plot of respective width；
Select during polar plot line thickness it is contemplated that will ensure that the line thickness being differed with horizontal direction angle is finally shown
Can be continuous when showing, then here takes the maximum of cos γ is 1, and then at this moment line thickness is:
d≥2×25.4/l.
(6) with (3), a certain passage that the polar plot that (5) are made is embedded in background color lump forms stealthy figure layer, by four
Individual passage merges, and forms the final hidden image containing hiding information.
(7) simulation grating figure layer is added on the hidden image being formed to be manifested.Newly-built and background in photoshop
The same grayscale mode file of the size of color lump, resolution ratio, the foreground dot area percentage of filling is 20%～60%, line of going forward side by side
Property screen screening, and the screen frequency of screen frequency and background color lump is the same.Activation black netting twine constituency, with mobile work
Tool is dragged in hidden image file, forms new figure layer, hiding information is manifested.
The determination method based on grating false proof hidden image polar plot line thickness for the present invention, by by grating false proof in
The mathematical relationship to determine polar plot line thickness and background color lump site for the principle hidden and manifest of hidden image, and combine
The relevant parameter of site finally to determine polar plot line thickness；Present invention determine that the mathematic(al) representation of polar plot line thickness is straight
See and easily calculate, corresponding result can quickly be determined according to different situations, so that embedded polar plot is hidden during grating is false proof
Manifesting of information can reach preferable effect, improves the false proof quality of grating.
Embodiment 1
Now by Information hiding in version and as a example dot area percentage is 25%, the specifically making of the bright present invention and behaviour
Make process.
(1) in coreldraw software with 0.353mm(coreldraw software in system default several line thickness it
One) line thickness makees polar plot, and size is 5cm × 5cm, saves as ai form.
(2) set up a background color lump in photoshop.Wherein this color lump is the size of 5cm × 5cm, resolution ratio
2800dpi.Filling foreground c, m, y, k dot area percentage are respectively 25%.Separate four chrominance channels, execute " image/pattern/position
Figure " is processed, and parameter is set to output resolution ratio 2800dpi, and method adjusts screen using half, and frequency (screen frequency) is 175lpi,
Generally circular in shape, tetra- passage screen angles of c, m, y, k are respectively 15 °, 75 °, 90 °, 45 °.Execute again after setting up " image/
Pattern/gray scale " is processed, and conversion proportion is 1.
(3) polar plot making (1) is opened in photoshop, a size of 5cm～5cm in rasterizing parameter, differentiates
Rate 2800dpi.Activate image constituency with magic wand menu, and drag it in the black print figure layer in background color lump with mobile instrument,
Activation constituency, and delete this figure layer, retain the profile of polar plot.Again the scaling of photoshop is amplified to maximum
(3200%), press on keyboard in the state of selecting mobile instrument " ↑ " make the site in profile enter line displacement, so under 11
It is the formation of hiding Layers in version.
(4) computing formula according to polar plot line thickness:
d≥2×25.4/l cos(β-α)
But considering can be continuous when will ensure that the line thickness being differed with horizontal direction angle is finally shown, then cos
(β-α) takes maximum is 1, then the formula of the computing formula of polar plot line thickness is:
d≥2×25.4/l
Wherein l is 175lpi, calculates d >=0.29mm
(5) according to result of calculation, select the polar plot line thickness of 0.3mm.Do before opening in coreldraw now
Good polar plot, execution " editor/search and replace/replace object ", select " replacing profile pen attribute ", the profile width in lookup
Spend for 0.353mm, replace with 0.3mm.Save as ai form.
(6) black print that the polar plot being done with 0.3mm lines is embedded in background color lump forms stealthy figure layer, is then combined with
Cmyk passage, forms the final hidden image containing hiding information.
(7) in photoshop, newly-built a size of 5cm × 5cm, resolution ratio are the grayscale mode file of 2800dpi, filling
Foreground c, m, to be 0, k be 55% to y, and executes " image/pattern/bitmap " and processes, parameter is set to output resolution ratio
2800dpi, method adjusts screen using half, and frequency (screen frequency) is 175lpi, is shaped as straight line, and angle is 45 °.Parameter setting
After complete, execution " image/pattern/gray scale " is processed, and conversion proportion is 1.Activation black netting twine constituency, is dragged to hiding with mobile instrument
In image file, form new figure layer, hiding information is manifested.Its display effect is as shown in Figures 2 and 3.
Fig. 2 is to be 0.3mm in embedded line thickness, and the resolution ratio of background color lump is 2800dpi and its screen frequency is
175lpi, the gray scale of simulation grating manifests design sketch by the hiding information being presented after three's superposition under the conditions of 55%, its pantograph ratio
Example is 10%, so can represent its overall effect；The scaling of Fig. 3 is 150%, so then it is observed that it is trickleer
Feature.
Claims (6)
1. a kind of determination method based on grating false proof hidden image polar plot line thickness it is characterised in that specifically according to
Lower step is implemented:
Step 1, sets the lines of one fixed width, makes the polar plot that will embed background color lump；
Step 2, sets up the background color lump equivalently-sized with polar plot, blue or green c, pinkish red m, Huang y, tetra- passages of black k is carried out point
From, and processed with self-defined screening function respectively, dot shape is circular；
Step 3, forms in a certain passage of the embedded background color lump of polar plot that step 1 is made and hides Layers；
Step 4, makes vector graph line and the site of background color lump be in same interface, then to polar plot line thickness and background colour
Mathematical relationship is set up in the site of block；
The mathematical relationship process setting up polar plot line thickness with the site of background color lump is: on the basis of level, vector lines
The direction of width and the angle of level are α, and screen angle is β, then the angle γ in the direction of vector line thickness and screening direction
For β-α；Then on γ for one jiao, setting up line thickness d and screening direction in the right angled triangle of a width of right-angle side of lines
Relation apart from d is
D=dcos γ=dcos (β-α)
And in order that its continuity of manifesting after plus simulation grating, then require
D >=2a=2 × 25.4/l
There is a=25.4/l again
Wherein, a is the length of side that mesh adjusts unit, and l is screen frequency, and 25.4 are one inch is equal to 25.4mm；
And then have d >=2 × 25.4/l cos γ；
Step 5, selects line thickness according to the mathematical relationship in step 4, makes the embedded polar plot of respective width；
Step 6, with step 3, the polar plot that step 5 is made is embedded into be formed in a certain passage of background color lump and hides Layers,
Four passages are merged, forms the final hidden image containing hiding information；
Step 7, adds in photoshop and the simulation grating figure layer that matches of background color lump is so as to hidden in hidden image
Tibetan information manifests.
2. the determination method based on grating false proof hidden image polar plot line thickness according to claim 1, its feature
It is, the polar plot that step 1 makes: be that 0.1mm～0.5mm does a vector first in coreldraw software line thickness
Figure, canvas size is (1～10) cm × (1～10) cm, and to save as ai form be to open in photoshop, to embed
Hide Layers.
3. the determination method based on grating false proof hidden image polar plot line thickness according to claim 1, its feature
It is, it is to set up a background color lump as polar plot size in photoshop that step 2 sets up background color lump, differentiate
Rate is 350dpi～2800dpi, is cmyk color mode, and foreground c, m, y, k dot area percentage 20%～60%；To c, m,
Tetra- passages of y, k carry out separating, and respectively it are carried out with screening, and wherein screen frequency is 80lpi～200lpi, and dot shape is
Circular.
4. the determination method based on grating false proof hidden image polar plot line thickness according to claim 1, its feature
It is, hide Layers in step 3 is formed by following process: the polar plot that step 1 is made is beaten in photoshop
Open, rasterizing parameter is consistent with the relevant parameter of Background, activate image constituency, be dragged into c, m, y, k wherein of background color lump
In individual passage figure layer and again activate constituency, then delete this figure layer, only remain the profile of polar plot, then the scaling by picture
Scaling to maximum, with mobile instrument, constituency is carried out certain skew, material is thus formed hiding Layers of a certain passage.
5. the determination method based on grating false proof hidden image polar plot line thickness according to claim 1, its feature
It is, when selecting polar plot line thickness it is contemplated that the line thickness differing with horizontal direction angle will be ensured in step 5
Can be continuous during final display, then here takes the maximum of cos γ is 1, and then at this moment line thickness is:
d≥2×25.4/l.
6. the determination method based on grating false proof hidden image polar plot line thickness according to claim 1, its feature
It is, in step 7, simulation grating makes mainly in photoshop newly-built size with background color lump, as resolution ratio
Grayscale mode file, the foreground dot area percentage of filling is 20%～60%, the screen screening of line of going forward side by side, and screening
Line number is the same with the screen frequency of background color lump, activates black netting twine constituency, is dragged to hidden image file with mobile instrument
In, form new figure layer, hiding information is manifested.
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| CN104637025B (en) * | 2015-01-28 | 2018-04-20 | 陕西科技大学 | A kind of docking method for anti-counterfeit based on moir patterns mechanism |
| CN104859329B (en) * | 2015-05-22 | 2017-06-23 | 陕西科技大学 | A kind of moir patterns method for anti-counterfeit based on linear grating |
| CN105118016A (en) * | 2015-06-23 | 2015-12-02 | 暨南大学 | Graphics and text information hiding method based on visual interference |
| CN106803118A (en) * | 2016-12-30 | 2017-06-06 | 广东壮丽彩印股份有限公司 | Anti-counterfeiting mark and recognition methods based on stealthy private mark technology |
| JP6810895B2 (en) * | 2017-08-24 | 2021-01-13 | 京セラドキュメントソリューションズ株式会社 | Image forming device |
| CN109040512A (en) * | 2018-05-25 | 2018-12-18 | 合肥康之恒机械科技有限公司 | A kind of grating anti-counterfeiting information based on color value hides and extracting method |
| CN108717681A (en) * | 2018-05-25 | 2018-10-30 | 合肥市闵葵电力工程有限公司 | A kind of raising concealed host image processing method anti-fake for grating |
| CN108932690A (en) * | 2018-07-04 | 2018-12-04 | 合肥信亚达智能科技有限公司 | A method of improving middle tone and shadow image raster anti-counterfeiting performance |
| CN111967557B (en) * | 2020-07-16 | 2023-04-21 | 金邦达有限公司 | Encryption smart card and manufacturing method thereof, decryption smart card and manufacturing method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1675072A (en) * | 2002-08-09 | 2005-09-28 | 德国捷德有限公司 | Data carrier |
| CN102205753A (en) * | 2011-01-31 | 2011-10-05 | 传虹科技(天津)有限公司 | Method for manufacturing implicit image for anti-counterfeit printing |
| CN102490508A (en) * | 2011-12-20 | 2012-06-13 | 天津环球磁卡股份有限公司 | Method for manufacturing anti-counterfeiting printing product |
| CN102831567A (en) * | 2012-07-02 | 2012-12-19 | 湖北联合天诚防伪技术股份有限公司 | Multilayer Moire encryption method for anti-counterfeiting images |
-
2014
- 2014-03-11 CN CN201410088591.2A patent/CN103903216B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1675072A (en) * | 2002-08-09 | 2005-09-28 | 德国捷德有限公司 | Data carrier |
| CN102205753A (en) * | 2011-01-31 | 2011-10-05 | 传虹科技(天津)有限公司 | Method for manufacturing implicit image for anti-counterfeit printing |
| CN102490508A (en) * | 2011-12-20 | 2012-06-13 | 天津环球磁卡股份有限公司 | Method for manufacturing anti-counterfeiting printing product |
| CN102831567A (en) * | 2012-07-02 | 2012-12-19 | 湖北联合天诚防伪技术股份有限公司 | Multilayer Moire encryption method for anti-counterfeiting images |
Non-Patent Citations (1)
| Title |
|---|
| 调幅加网技术在光栅防伪技术中的应用;刘真 等;《包装工程》;20111130;第32卷(第21期);90-93 * |
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