CN110120006A - A kind of halftoning hidden image solid based on amplification shows hidden method - Google Patents
A kind of halftoning hidden image solid based on amplification shows hidden method Download PDFInfo
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- CN110120006A CN110120006A CN201910424367.9A CN201910424367A CN110120006A CN 110120006 A CN110120006 A CN 110120006A CN 201910424367 A CN201910424367 A CN 201910424367A CN 110120006 A CN110120006 A CN 110120006A
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- color
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- hiding information
- halftoning
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T1/00—General purpose image data processing
- G06T1/0021—Image watermarking
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Abstract
The present invention discloses a kind of halftoning hidden image solid based on amplification and shows hidden method, when carrying out halftone screen to image, two color versions are chosen as anti-fake main color version and are embedded in hiding information, and the hiding information in one of color version is amplified, the combination grating that production matches with two anti-fake main color versions simultaneously, it is covered on the image containing hiding information, can show the stereoscopic effect of hidden image；Combination grating show hidden effect under, hiding information is showed with stereoscopic effect, improves eye recognition degree；Image processing techniques is combined with anti-counterfeiting printing technology before printing, and is not easy to be copied by criminal, enhances the antiforge function of packaging product.
Description
Technical field
The invention belongs to the half tone image field of anti-counterfeit technology of printed matter, and in particular to a kind of halftoning based on amplification
Hidden image solid shows hidden method.
Background technique
Miscellaneous printing packaging product is flooded with our life, is greatly promoted the circulation of commodity, tobacco and wine, change
The packaging of cosmetic etc. is easily imitated, and profit is higher, occurs serial fake products gradually.To hit these personation phenomenons, printing
Anti-counterfeiting technology should be needed and be given birth to.Previous printing anti-counterfeiting technology is realized by materials such as ink, paper, since material is easily ground
Damage, reduces the anti-counterfeiting performance of product, therefore needs a kind of superior technology of anti-counterfeiting performance to improve this phenomenon.
With the development of screening reproduction technology and printing machinery, the phenomenon that anti-counterfeiting performance is realized by image processing techniques by
It is gradually universal.It is embedded in hiding information in packaging using printing image procossing, the reproduction of hiding information is realized using lenticular lenses, it should
Technology is also referred to as halftoning sub-image anti-counterfeiting technology, and initial anti-fake thought is one color of selection during color reproduction image
Version complete, this method show it is hidden the effect is not very satisfactory, identify it is more difficult.
Summary of the invention
It is an object of that present invention to provide a kind of, and the halftoning hidden image solid based on amplification shows hidden method, and this method is not easy
It is copied by criminal, the antifalse effect of printed matter image information can not only be enhanced, and can be realized hiding information three-dimensional
It has been shown that, improves eye recognition degree.
To achieve the above object, the technical solution adopted by the present invention is that:
A kind of halftoning hidden image solid based on amplification shows hidden method, comprising the following steps:
Step 1, piece image is made, using the image as the bottom layer image of Information hiding after Fill Color；
Step 2, the bottom layer image made in step 1 is separated into four color color versions, and halftoning is carried out to each color version respectively and is added
Net；
Step 3, the image or text for selecting a width to remove background layer are translated into grayscale image as hiding information
Picture；
Step 4, select green version (C) and black print (K) as anti-fake mass-tone in four color versions to complete in step 2
Version is embedded in hiding information simultaneously in the two anti-fake main color versions；
Step 5, the hiding information in black print (K) is amplified；
Step 6, the hiding information region in green version (C) and black print (K) is chosen, it is displaced after deleting layer；
Step 7, merge four color color versions, complete hiding for information；
Step 8, the display grating layer to match with two the green version (C) in step 4, black print (K) anti-fake main color versions is made,
The two grating layers are merged, as the combination grating layer that hiding information is carried out to stereoscopic display；
Step 9, combination grating layer made of step 8 is overlapped on four color hidden images after merging in step 7, display
Hiding information.
Further, the bottom layer image size of the step 1 is (1-15) cm × (1-15) cm, resolution ratio 500-
2100dpi, color mode are CMYK mode, and background colour is white.
Further, when step 1 Fill Color, the Fill Color value of each color version is between 20-80%.
Further, the screening operation of the step 2, is carried out using circular shaped lattice point to four color versions under pattern bitmap
Screening, the screen angle of green black (CMYK) four color versions of product Huang select 18.4 ° respectively, and 71.6 °, 0 °, 45 °, screen frequency is
Between 150lpi-175lpi.
Further, the hiding information of the step 3 is having a size of (1-5) cm × (1-5) cm.
Further, insertion hiding information described in the step 4 is the hiding information layer point that will be completed in step 3
Do not copy to green version (C), black print (K) two color versions same position on.
Further, the step 5 amplifies hiding information, is with the upper left corner in hidden image region in black print (K)
On the basis of it is amplified, and the enlargement ratio of image is between 1/10-1/50.
Further, the displacement operation of the step 6 is the constituency chosen where hiding information, deletes the figure layer where it,
Displacement operation is carried out to hiding information using displacement formula, displacement is determined by following equation:
Wherein: X, Y are respectively horizontal and vertical displacement, PlFor image lateral resolution, PcFor image longitudinal resolution
Rate, L are screen density, and α is screen angle.
Further, the merging color version of the step 7 is to merge in Photoshop according to the sequence of tetra- color double exposure of CMYK
Color version.
Further, the combination grating layer in the step 8 refers to the screen angle, screen frequency, site shape of single layer grating
The anti-fake main color version of shape, resolution ratio corresponding thereto matches, and gray value is set as its corresponding anti-fake main color version gray value
50%.
The beneficial effects of the present invention are:
The present invention is based on the halftoning hidden image solids of amplification to show hidden method, when carrying out halftone screen to image, choosing
It takes two color versions to be embedded in hiding information as anti-fake main color version, and the hiding information in one of color version is amplified, together
When the combination grating that matches with two anti-fake main color versions of production, be covered on the image containing hiding information, Ji Kexian
Show the stereoscopic effect of hidden image.
Half tone image is hidden in Packaging Printing Product, by the way that hiding information is added simultaneously in two color versions, and
One of hiding information is amplified, combination grating show hidden effect under, hiding information is showed with stereoscopic effect,
Improve eye recognition degree.This method does not change existing printing technology, image processing techniques and anti-counterfeiting printing technology before printing
It combines, is applied in half tone image, is not easy to be copied by criminal, enhance the antiforge function of packaging product.
Detailed description of the invention
Fig. 1 is that the solid of halftoning hidden image of the present invention shows hidden flow chart
Fig. 2 is hiding information 1
Fig. 3 is the concealment effect figure of hiding information 1
Fig. 4 is the stereoscopic display figure of hiding information 1
Fig. 5 is hiding information 2
Fig. 6 is the concealment effect figure of hiding information 2
Fig. 7 is the stereoscopic display figure of hiding information 2
Specific embodiment
Present invention is further described in detail combined with specific embodiments below, but not as a limitation of the invention.
A kind of halftoning hidden image solid based on amplification of the present invention shows hidden method, and flow chart is as shown in Figure 1, specifically press
Implement according to following steps:
Step 1, the bottom layer image for making Information hiding, the new files in Photoshop: image size is (1-15) cm
× (1-15) cm, resolution ratio 500-2100dpi, color mode is CMYK mode, and background colour is white；
Step 2, the bottom layer image made in step 1 is subjected to color filling, filling rate is arranged between 20-80%；
Step 3, under pattern bitmap, image is separated into four color color versions, and is used for circular shaped lattice point respectively and carries out half color
Screening is adjusted, the screen angle of green black (CMYK) four color versions of product Huang selects 18.4 ° respectively, and 71.6 °, 0 °, 45 °, screen frequency is
Between 150lpi-175lpi；
Step 4, the image or text for selecting a width to remove background layer are as hiding information, having a size of 6cm × 6cm,
It is translated into gray level image；
Step 5, green version (C) and black print (K) are regard as anti-fake main color version, the same position insertion in the two main color versions
The hiding information of made completion in step 4；
Step 6, to be amplified on the basis of the upper left corner in hidden image region to it in black print (K), enlargement ratio setting
Between 1/10-1/50；
Step 7, the constituency in two color versions where hiding information is chosen, the figure layer where it is deleted, uses displacement formula
Displacement operation is carried out to hiding information, displacement is determined by following equation:
Wherein: X, Y are respectively horizontal and vertical displacement, PlFor image lateral resolution, PcFor image longitudinal resolution
Rate, L are screen density, and α is screen angle；
Step, 8, merge four color color versions, merge color version according to the sequence of tetra- color double exposure of CMYK in Photoshop, completes
Information is hidden；
Step 9, the display grating layer to match with two green version (C), black print (K) anti-fake main color versions, single layer grating are made
Parameter include that the anti-fake main color version of screen angle, screen frequency, dot shape corresponding thereto matches, color filling value is set
It is set to the 50% of its corresponding anti-fake main color version gray value；
Step 10, the two grating layers are merged, as the group that hiding information is carried out to stereoscopic display after removal background layer
Light combination grid layer；
Step 11, combination grating layer made of step 10 is overlapped on four color hidden images after merging in step 8, i.e.,
It can show the stereoscopic effect of hiding information.
Embodiment 1
Step 1, the bottom layer image for making Information hiding, the new files in Photoshop: image size be 15cm ×
15cm, resolution ratio 2100dpi, color mode are CMYK mode, and background colour is white；
Step 2, the bottom layer image made in step 1 is subjected to color filling, filling rate is set as 30%；
Step 3, under pattern bitmap, image is separated into four color color versions, and is used for circular shaped lattice point respectively and carries out half color
Screening is adjusted, the screen angle of tetra- color versions of CMYK selects 18.4 ° respectively, and 71.6 °, 0 °, 45 °, screen frequency 175lpi；
Step 4, using Fig. 2 as hiding information 1, it is translated into gray level image；
Step 5, green version (C) and black print (K) are regard as anti-fake main color version, the same position insertion in the two main color versions
The hiding information of made completion in step 4；
Step 6, to be amplified on the basis of the upper left corner in hidden image region to it in black print (K), enlargement ratio setting
It is 1/15；
Step 7, the constituency in two color versions where hiding information is chosen, the figure layer where it is deleted, uses displacement formula
Displacement operation is carried out to hiding information, displacement is determined by following equation:
Wherein: Pl=Pc=2100dpi, L=175lpi, α=18.4 ° of green version (C), α=45 ° of black print (K) are passed through
It is calculated: the lateral displacement amount X=2 of green version (C), length travel amount Y=6；The displacement X=4 of black print (K), length travel
Measure Y=4；
Step 8, merge four color color versions, merge color version according to the sequence of tetra- color double exposure of CMYK in Photoshop, complete letter
Breath is hidden, and four colors of hiding information 1 hide figure such as Fig. 3；
Step 9, the display grating layer to match with two green version (C), black print (K) anti-fake main color versions, single layer grating are made
Parameter specifically: screen frequency 175lpi, dot shape are round, resolution ratio 2100dpi, and color filling rate is
15%, grating screen angle corresponding with green version (C) is 18.4 °, and grating screen angle corresponding with black print (K) is 45 °；
Step 10, remove background layer after two grating layers that step 9 completes being merged, carried out as by hiding information
The combination grating layer of stereoscopic display；
Step 11, combination grating layer made of step 10 is superimposed on Fig. 3, can shows hiding information, hiding information 1
Stereoscopic effect such as Fig. 4；
Embodiment 2
Step 1, the bottom layer image for making Information hiding, the new files in Photoshop: image size be 15cm ×
15cm, resolution ratio 2100dpi, color mode are CMYK mode, and background colour is white；
Step 2, the bottom layer image made in step 1 is subjected to color filling, filling rate is set as 30%；
Step 3, under pattern bitmap, image is separated into four color color versions, and is used for circular shaped lattice point respectively and carries out half color
Screening is adjusted, the screen angle of tetra- color versions of CMYK selects 18.4 ° respectively, and 71.6 °, 0 °, 45 °, screen frequency 175lpi；
Step 4, using Fig. 5 as hiding information 2, it is translated into gray level image；
Step 5, green version (C) and black print (K) are regard as anti-fake main color version, the same position insertion in the two main color versions
The hiding information of made completion in step 4；
Step 6, to be amplified on the basis of the upper left corner in hidden image region to it in black print (K), enlargement ratio setting
It is 1/10；
Step 7, the constituency in two color versions where hiding information is chosen, the figure layer where it is deleted, uses displacement formula
Displacement operation is carried out to hiding information, displacement is determined by following equation:
Wherein: Pl=Pc=2100dpi, L=175lpi, α=18.4 ° of green version (C), α=45 ° of black print (K) are passed through
It is calculated: the lateral displacement amount X=2 of green version (C), length travel amount Y=6；The displacement X=4 of black print (K), length travel
Measure Y=4；
Step 8, merge four color color versions, merge color version according to the sequence of tetra- color double exposure of CMYK in Photoshop, complete letter
Breath is hidden, and four colors of hiding information 2 hide figure such as Fig. 6；
Step 9, the display grating layer to match with two green version (C), black print (K) anti-fake main color versions, single layer grating are made
Parameter specifically: screen frequency 175lpi, dot shape are round, resolution ratio 2100dpi, and color filling rate is
15%, grating screen angle corresponding with green version (C) is 18.4 °, and grating screen angle corresponding with black print (K) is 45 °；
Step 10, remove background layer after two grating layers that step 9 completes being merged, carried out as by hiding information
The combination grating layer of stereoscopic display；
Step 11, combination grating layer made of step 10 is superimposed on Fig. 6, can shows hiding information, hiding information 2
Stereoscopic effect such as Fig. 7.
Finally it should be noted that: the above examples are only used to illustrate the technical scheme of the present invention rather than its limitations, to the greatest extent
Pipe is described the invention in detail referring to above-described embodiment, it should be understood by those ordinary skilled in the art that: still may be used
With modifications or equivalent substitutions are made to specific embodiments of the invention, and repaired without departing from any of spirit and scope of the invention
Change or equivalent replacement, should all cover in present claims range.
Claims (10)
1. a kind of halftoning hidden image solid based on amplification shows hidden method, it is characterised in that the following steps are included:
Step 1, piece image is made, using the image as the bottom layer image of Information hiding after Fill Color；
Step 2, the bottom layer image made in step 1 is separated into four color color versions, and halftone screen is carried out to each color version respectively；
Step 3, the image or text for selecting a width to remove background layer are translated into gray level image as hiding information；
Step 4, select green version (C) and black print (K) as anti-fake main color version in four color versions to complete in step 2,
Hiding information is embedded in the two anti-fake main color versions simultaneously；
Step 5, the hiding information in black print (K) is amplified；
Step 6, the hiding information region in green version (C) and black print (K) is chosen, it is displaced after deleting layer；
Step 7, merge four color color versions, form four chromatic graphs containing hiding information；
Step 8, the display grating layer to match with two the green version (C) in step 4, black print (K) anti-fake main color versions is made, by this
Two grating layers merge, as the combination grating layer that hiding information is carried out to stereoscopic display；
Step 9, combination grating layer made of step 8 is overlapped on four color hidden images after merging in step 7, display is hidden
Information.
2. the halftoning hidden image solid according to claim 1 based on amplification shows hidden method, it is characterised in that: described
The bottom layer image size of step 1 is (1-15) cm × (1-15) cm, and resolution ratio 500-2100dpi, color mode is CMYK mould
Formula, background colour are white.
3. the halftoning hidden image solid according to claim 2 based on amplification shows hidden method, it is characterised in that: described
When step 1 Fill Color, the Fill Color value of each color version is between 20-80%.
4. the halftoning hidden image solid according to claim 1 based on amplification shows hidden method, it is characterised in that: described
The screening of step 2 operates, and is to carry out screening to four color versions using circular shaped lattice point, green product Huang is black (CMYK) under pattern bitmap
The screen angle of four color versions selects 18.4 ° respectively, and 71.6 °, 0 °, 45 °, screen frequency is between 150lpi-175lpi.
5. the halftoning hidden image solid according to claim 2 based on amplification shows hidden method, it is characterised in that: described
The hiding information of step 3 is having a size of (1-5) cm × (1-5) cm.
6. the halftoning hidden image solid according to claim 1 based on amplification shows hidden method, it is characterised in that: described
Insertion hiding information described in step 4 is that the hiding information layer that will be completed in step 3 copies to green version (C), black print respectively
(K) on the same position of two color versions.
7. the halftoning hidden image solid according to claim 1 based on amplification shows hidden method, it is characterised in that: described
Step 5 amplifies hiding information, be to be amplified on the basis of the upper left corner in hidden image region to it in black print (K),
And the enlargement ratio of image is between 1/10-1/50.
8. the halftoning hidden image solid according to claim 1 based on amplification shows hidden method, it is characterised in that: described
The displacement operation of step 6 is the constituency chosen where hiding information, deletes the figure layer where it, using displacement formula to hiding
Information carries out displacement operation, and displacement is determined by following equation:
Wherein: X, Y are respectively horizontal and vertical displacement, PlFor image lateral resolution, PcFor image longitudinal resolution, L is
Screen density, α are screen angle.
9. the halftoning hidden image solid according to claim 1 based on amplification shows hidden method, it is characterised in that: described
The merging color version of step 7 is to merge color version according to the sequence of tetra- color double exposure of CMYK in Photoshop.
10. the halftoning hidden image solid according to claim 1 based on amplification shows hidden method, it is characterised in that: institute
The combination grating layer in step 8 is stated, refers to the screen angle of single layer grating, screen frequency, dot shape, resolution ratio corresponding thereto
The anti-fake main color version answered matches, and gray value is set as the 50% of its corresponding anti-fake main color version gray value.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110086956A (en) * | 2019-05-21 | 2019-08-02 | 温州立可达印业股份有限公司 | A kind of halftoning hidden image relief effect shows hidden method |
| CN111583090A (en) * | 2020-05-14 | 2020-08-25 | 陕西科技大学 | Hiding and displaying method based on half-tone image hidden information |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130215472A1 (en) * | 2012-02-21 | 2013-08-22 | Ecole Polytechnique Federale De Lausanne (Epfl) | Synthesis of authenticable color multi-halftone images |
| CN106891632A (en) * | 2015-12-21 | 2017-06-27 | 深圳市科彩印务有限公司 | The preparation method of printed matter grating and the combined and spliced anti-fake mark of image-carrier |
-
2019
- 2019-05-21 CN CN201910424367.9A patent/CN110120006B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130215472A1 (en) * | 2012-02-21 | 2013-08-22 | Ecole Polytechnique Federale De Lausanne (Epfl) | Synthesis of authenticable color multi-halftone images |
| CN106891632A (en) * | 2015-12-21 | 2017-06-27 | 深圳市科彩印务有限公司 | The preparation method of printed matter grating and the combined and spliced anti-fake mark of image-carrier |
Non-Patent Citations (1)
| Title |
|---|
| 郭凌华等: "基于网点式光栅的半色调图像防伪技术研究", 《陕西科技大学学报(自然科学版)》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110086956A (en) * | 2019-05-21 | 2019-08-02 | 温州立可达印业股份有限公司 | A kind of halftoning hidden image relief effect shows hidden method |
| CN110086956B (en) * | 2019-05-21 | 2020-12-04 | 增和包装股份有限公司 | Display and hiding method for halftone hidden image floating effect |
| CN111583090A (en) * | 2020-05-14 | 2020-08-25 | 陕西科技大学 | Hiding and displaying method based on half-tone image hidden information |
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