CN104637025A - Butt joint forgery prevention method based on Moire pattern mechanism - Google Patents
Butt joint forgery prevention method based on Moire pattern mechanism Download PDFInfo
- Publication number
- CN104637025A CN104637025A CN201510042415.XA CN201510042415A CN104637025A CN 104637025 A CN104637025 A CN 104637025A CN 201510042415 A CN201510042415 A CN 201510042415A CN 104637025 A CN104637025 A CN 104637025A
- Authority
- CN
- China
- Prior art keywords
- hidden
- image
- info
- background color
- grating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 41
- 210000001503 joint Anatomy 0.000 title abstract 4
- 230000002265 prevention Effects 0.000 title abstract 2
- 238000000605 extraction Methods 0.000 claims abstract description 15
- 238000003032 molecular docking Methods 0.000 claims description 34
- 230000011218 segmentation Effects 0.000 claims description 11
- 238000012216 screening Methods 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 24
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000000638 solvent extraction Methods 0.000 abstract 1
- 239000003086 colorant Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Abstract
The invention discloses a butt joint forgery prevention method based on the Moire pattern mechanism. The method comprises the following steps of establishing a background color block, separating a green C passage, a magenta M passage, a yellow Y passage and a black K passage, and respectively processing the four passages by use of a user-defined net setting function, wherein the net point is round; manufacturing a hidden pattern which has the same size and resolution ratio with the background color block; partitioning the hidden pattern into two hidden pattern layers; respectively embedding the two partitioned hidden pattern layers into a green version and a magenta version, and combining the four passages, thereby finally forming a digital pattern containing hidden information; manufacturing a matched butt joint grating; and superposing the manufactured butt joint grating on the digital pattern and extracting the hidden information. According to the method, a contrast effect is generated during hidden information extraction, so that the definition of the hidden information extraction is obviously improved.
Description
Technical field
The invention belongs to antiforge technical field, be specifically related to a kind of docking method for anti-counterfeit based on moir patterns mechanism.
Background technology
Moir patterns is false proof is combine based on halftone screen technology and Moire effect to combine the anti-counterfeiting technology of generation.The method is simple and easy to do, does not have too high requirement to equipment and typography, can reach false proof object when not increasing production cost, and thus grating is false proof is very promising a kind of method for anti-counterfeit.But the extraction lack of defination that hides Info of this method for anti-counterfeit, need further promote at present, hide form in addition simple, need to strengthen it and forge difficulty, the final false proof quality improving moir patterns method for anti-counterfeit, makes it better apply in actual production.
Summary of the invention
The object of this invention is to provide a kind of docking method for anti-counterfeit based on moir patterns mechanism, solve hiding Info of existing moir patterns method for anti-counterfeit and extract lack of defination and hiding form simple question.
The technical solution adopted in the present invention is, a kind of docking method for anti-counterfeit based on moir patterns mechanism, specifically implements according to following steps:
Step 1, sets up background color lump, is separated, and processes by self-defined screening function respectively blue or green C, pinkish red M, yellow Y, black K four passages, and dot shape is circular;
Step 2, make hidden image, the size of image is all identical with background color lump with resolution;
Step 3, segmentation hidden image, forms two and hides Layers;
Step 4, hides Layers split two and is embedded in blue or green version and pinkish red version respectively, merged by four passages, is formed final containing the digital picture hidden Info;
Step 5, makes the docking grating of coupling;
Step 6, be superimposed on by the docking grating of making in digital picture that step 4 formed, will hide Info extraction.
Feature of the present invention is also,
Step 1 is set up background color lump and is set up in Photoshop, and image size is 1 ~ 10cm × 1 ~ 10cm, and resolution is 350dpi ~ 2800dpi, is cmyk color pattern, and foreground C, M, Y, K dot area percentage 20% ~ 60%; Be separated C, M, Y, K tetra-passages, and carry out screening to it respectively, wherein screen frequency is 80LPI ~ 200LPI, and dot shape is circular.
Step 2 makes hidden image: first in Coreldraw software, draw the figure that hides Info, canvas size is identical with the image size of background color lump, and save as AI form, then open in Photoshop, identical all with background color lump of the image size and resolution in rasterizing optimum configurations.
Step 3 splits hidden image: to the hidden image duplicate layer opened in Photoshop, the reference line of a newly-built segmentation image, choose former layer, use the part of rectangular marquee selection in reference line side, and delete, then choose duplicate layer, after anti-choosing, make rectangular marquee select the part of reference line opposite side, and delete, form two and hide Layers.
Step 4 is formed by following process containing the digital picture hidden Info: hide Layers one that is formed in step 3 through duplicate layer in a certain channel image file of background color lump, activate image constituency and then delete this layer, only remain the profile of hidden figure, again the scaling of picture is amplified to maximum, with Move tool, certain skew is carried out in constituency, define one containing the channel image hidden Info; After the same method another is hidden Layers in being embedded in all the other triple channel a certain channel image, form another and contain the channel image hidden Info; Then four passages are merged, finally formed containing the digital picture hidden Info.
The making that step 5 docks grating is the newly-built size with background color lump in Photoshop, the grayscale mode file that resolution is the same, the foreground dot area percentage of filling is 20% ~ 60%, to go forward side by side the screen screening of line linearity, screen frequency is identical with the screen frequency of background color lump, screen angle is according to the screen angle setting of two passages embedded that hide Layers, form the grating layer of two different screen angles, then according to the part that the stowed position determination respective channel grating hidden Layers in the passage of correspondence retains, non-concealed part deletes, raster pattern finally by corresponding for two passages is also laminated, form docking grating.
The invention has the beneficial effects as follows, the present invention is based on the docking method for anti-counterfeit of moir patterns mechanism, undertaken splitting by hiding Info and be hidden on different color versions, the docking grating finally by correspondence extracts complete hiding Info, and reaches the effect of slitless connection between different colours.The present invention is when extraction hides Info because producing contrast effect, and the sharpness extracted that makes to hide Info significantly improves; The present invention requires meticulous for the making of the embedding hidden Info and docking grating, and the position that false proof person can be split from main separation according to the feature hidden Info, and then make corresponding docking grating, thus the method needs accurately to split and docking technique, otherwise finally cannot see the effect of slitless connection between different colours, therefore improve the false proof quality of moir patterns.
Accompanying drawing explanation
Fig. 1 is the segmentation effect figure of complete hidden image in embodiment 1;
Fig. 2 is the segmentation hidden image embedding C-channel in embodiment 1;
Fig. 3 is the segmentation hidden image embedding M passage in embodiment 1;
Fig. 4 is C-channel concealment effect figure in embodiment 1;
Fig. 5 is M passage concealment effect figure in embodiment 1;
Fig. 6 is the concealment effect figure in embodiment 1 after four passages merging;
Fig. 7 docks grating effect in embodiment 1;
Fig. 8 is the extraction effect figure that hides Info in embodiment 1.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
The present invention is based on the docking method for anti-counterfeit of moir patterns mechanism, specifically implement according to following steps:
(1) background color lump is set up
In Photoshop, set up image size is 1 ~ 10cm × 1 ~ 10cm, and resolution is 350dpi ~ 2800dpi, is cmyk color pattern, and foreground C, M, Y, K dot area percentage 20% ~ 60%; Be separated C, M, Y, K tetra-passages, and carry out screening to it respectively, wherein screen frequency is 80LPI ~ 200LPI, and dot shape is circular.
(2) hidden image is made
First in Coreldraw software, draw the figure that hides Info, canvas size is identical with the image size of background color lump, and saves as AI form.Then open in Photoshop, identical all with background color lump of the image size and resolution in rasterizing optimum configurations.
(3) hidden image is split
To the hidden image duplicate layer opened in Photoshop, the reference line of a newly-built segmentation image; Choose former layer, use the part of rectangular marquee selection in reference line side, and delete, then choose duplicate layer, make rectangular marquee select the part of reference line opposite side after anti-choosing, and delete, form two and hide Layers.
(4) make containing the digital picture hidden Info
One that is formed in (3) is hidden Layers through duplicate layer in a certain channel image file of background color lump, activate image constituency and then delete this layer, only remain the profile of hidden figure, again the scaling of picture is amplified to maximum, with Move tool, certain skew is carried out in constituency, material is thus formed one containing the channel image hidden Info.After the same method another is hidden Layers in being embedded in all the other triple channel a certain channel image, form another and contain the channel image hidden Info.Then four passages are merged, finally formed containing the digital picture hidden Info.
(5) docking grating is made
The newly-built size with background color lump in Photoshop, the grayscale mode file that resolution is the same, the foreground dot area percentage of filling is 20% ~ 60%, to go forward side by side the screen screening of line linearity, screen frequency is identical with the screen frequency of background color lump, screen angle is according to the screen angle setting of two passages embedded that hide Layers, form the grating layer of two different screen angles, then according to the part that the stowed position determination respective channel grating hidden Layers in the passage of correspondence retains, non-concealed part deletes, raster pattern finally by corresponding for two passages is also laminated, form docking grating.
(6) extraction hides Info
The docking grating layer that (5) are made copy to that (4) formed containing in the digital picture hidden Info, will hide Info extraction.
Be distributed in because hide Info in different passages, for hidden area, its display be the color of respective channel, hiding Info of extracting is the result of two kinds of different colours figure slitless connections, for non-concealed region, its display be the complementary color of respective channel color, thus background color lump is then formed by another two kinds of color slitless connections, such generation contrast effect, final clear extraction hides Info, and reaches the effect of slitless connection.
The present invention is based on the docking method for anti-counterfeit of moir patterns mechanism, undertaken splitting and be hidden on different color versions by hiding Info, the docking grating finally by correspondence extracts complete hiding Info, and reaches the effect of slitless connection between different colours.The present invention is when extraction hides Info because producing contrast effect, and the sharpness extracted that makes to hide Info significantly improves; The present invention requires meticulous for the making of the embedding hidden Info and docking grating, and the position that false proof person can be split from main separation according to the feature hidden Info, and then make corresponding docking grating, thus the method needs accurately to split and docking technique, otherwise finally cannot see the effect of slitless connection between different colours, therefore improve the false proof quality of moir patterns.
Embodiment 1
Now to embed blue or green version and pinkish red version respectively, bright making of the present invention and operating process specifically after the segmentation that hides Info.
(1) background color lump is set up.In Photoshop, set up image size is 5cm × 5cm, and resolution is 2400dpi, and color mode is CMYK.Filling foreground C, M, Y, K dot area percentage are respectively 20%.Be separated four chrominance channels, perform " image/pattern/bitmap " process, optimum configurations is output resolution ratio 2400dpi, method uses and partly adjusts screen, frequency (screen frequency) is 175LPI, shape is circular, and C, M, Y, K tetra-passage screen angles are respectively 15 °, 75 °, 90 °, 45 °.Perform " image/pattern/gray scale " process after setting up again, conversion proportion is 1.
(2) hidden image is made.First in Coreldraw software, draw the figure that hides Info, canvas size is 50mm × 50mm, and saves as AI form.Then open in Photoshop, the image size in rasterizing optimum configurations is 5cm × 5cm, and resolution is 2400dpi.Complete hidden image effect as shown in Figure 1.
(3) hidden image is split.To opening hidden image and duplicate layer in Photoshop, new guide, " orientation " is vertical, and " position " is 2.5cm.Enable " view/alignment " function, choose former layer, use the part of rectangular marquee selection on the right side of reference line, and delete, form a segmentation hidden image, its effect as shown in Figure 2.Then choose duplicate layer, make the part on the left of rectangular marquee selection reference line, and delete after anti-choosing, form another segmentation hidden image, its effect as shown in Figure 3.
(4) make containing the digital picture hidden Info.By the b that hides Layers that formed in (3) through duplicate layer in background color lump C-channel image file, activate image constituency with magic wand menu and then delete this layer, only remain the profile of hidden figure, again the scaling of Photoshop is amplified to maximum (3200%), under the state of optional m igration instrument, on keyboard, make for 10 times the site in profile offset by " ↑ ", form the C-channel image embedding and split and hide Info, phase effect as shown in Figure 4.Make to use the same method and be embedded in M passage file by the c that hides Layers, form the M channel image embedding and split and hide Info, phase effect as shown in Figure 5.Merge four passages, formed final containing the digital picture hidden Info, its effect as shown in Figure 6.
(5) docking grating is made.In Photoshop, new image size is 5cm × 5cm, and resolution is 2400dpi, and color mode is gray scale.The foreground C filled, M, Y are 0, K is 55%, and perform " image/pattern/bitmap " process, optimum configurations is output resolution ratio 2800dpi, method uses and partly adjusts screen, and frequency (screen frequency) is 175LPI, and shape is straight line, angle is 15 °, forms the grating that C-channel is corresponding.Make to use the same method, except screen angle becomes 75 °, all the other optimum configurations are all the same, make and form grating corresponding to M passage.Then by grating layer duplicate layer corresponding for M passage in raster image file corresponding to C-channel, new guide, " orientation " is vertical, " position " is 2.5cm, enable " view/alignment " function, choose C-channel grating layer, use the part of rectangular marquee selection on the right side of reference line, and delete.Choose M passage grating layer again, make the part on the left of rectangular marquee selection reference line after anti-choosing, and delete, then Merge Visible, namely obtain docking grating, its effect as shown in Figure 7.
(6) extraction hides Info.The docking grating layer that (5) are made copy to step 4 formed containing in the digital image file hidden Info, extraction hides Info, and effect is as shown in Figure 8.Can be seen by Fig. 8, hidden figure is docked by the cyan of the passage embedded and magenta to form, and in non-concealed region, then formed by the red and green docking of complementary color of cyan and magenta, complete the hiding Info of final extraction, and under the contrast in hidden area and non-concealed region, make the clear extraction that hides Info.
Claims (6)
1. based on a docking method for anti-counterfeit for moir patterns mechanism, it is characterized in that, specifically implement according to following steps:
Step 1, sets up background color lump, is separated, and processes by self-defined screening function respectively blue or green C, pinkish red M, yellow Y, black K four passages, and dot shape is circular;
Step 2, make hidden image, the size of image is all identical with background color lump with resolution;
Step 3, segmentation hidden image, forms two and hides Layers;
Step 4, hides Layers split two and is embedded in blue or green version and pinkish red version respectively, merged by four passages, is formed final containing the digital picture hidden Info;
Step 5, makes the docking grating of coupling;
Step 6, be superimposed on by the docking grating of making in digital picture that step 4 formed, will hide Info extraction.
2. the docking method for anti-counterfeit based on moir patterns mechanism according to claim 1, it is characterized in that, step 1 is set up background color lump and is set up in Photoshop, image size is 1 ~ 10cm × 1 ~ 10cm, resolution is 350dpi ~ 2800dpi, cmyk color pattern, and foreground C, M, Y, K dot area percentage 20% ~ 60%; Be separated C, M, Y, K tetra-passages, and carry out screening to it respectively, wherein screen frequency is 80LPI ~ 200LPI, and dot shape is circular.
3. the docking method for anti-counterfeit based on moir patterns mechanism according to claim 1, it is characterized in that, step 2 makes hidden image: first in Coreldraw software, draw the figure that hides Info, canvas size is identical with the image size of background color lump, and save as AI form, then open in Photoshop, identical all with background color lump of the image size and resolution in rasterizing optimum configurations.
4. the docking method for anti-counterfeit based on moir patterns mechanism according to claim 1, it is characterized in that, step 3 splits hidden image: to the hidden image duplicate layer opened in Photoshop, and the reference line of a newly-built segmentation image, chooses former layer, use the part of rectangular marquee selection in reference line side, and delete, then choose duplicate layer, after anti-choosing, make rectangular marquee select the part of reference line opposite side, and delete, form two and hide Layers.
5. the docking method for anti-counterfeit based on moir patterns mechanism according to claim 1, it is characterized in that, step 4 is formed by following process containing the digital picture hidden Info: hide Layers one that is formed in step 3 through duplicate layer in a certain channel image file of background color lump, activate image constituency and then delete this layer, only remain the profile of hidden figure, again the scaling of picture is amplified to maximum, with Move tool, certain skew is carried out in constituency, define one containing the channel image hidden Info; After the same method another is hidden Layers in being embedded in all the other triple channel a certain channel image, form another and contain the channel image hidden Info; Then four passages are merged, finally formed containing the digital picture hidden Info.
6. the docking method for anti-counterfeit based on moir patterns mechanism according to claim 1, it is characterized in that, the making that step 5 docks grating is the newly-built size with background color lump in Photoshop, the grayscale mode file that resolution is the same, the foreground dot area percentage of filling is 20% ~ 60%, to go forward side by side the screen screening of line linearity, screen frequency is identical with the screen frequency of background color lump, screen angle is according to the screen angle setting of two passages embedded that hide Layers, form the grating layer of two different screen angles, then according to the part that the stowed position determination respective channel grating hidden Layers in the passage of correspondence retains, non-concealed part deletes, raster pattern finally by corresponding for two passages is also laminated, form docking grating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510042415.XA CN104637025B (en) | 2015-01-28 | 2015-01-28 | A kind of docking method for anti-counterfeit based on moir patterns mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510042415.XA CN104637025B (en) | 2015-01-28 | 2015-01-28 | A kind of docking method for anti-counterfeit based on moir patterns mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104637025A true CN104637025A (en) | 2015-05-20 |
| CN104637025B CN104637025B (en) | 2018-04-20 |
Family
ID=53215734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510042415.XA Expired - Fee Related CN104637025B (en) | 2015-01-28 | 2015-01-28 | A kind of docking method for anti-counterfeit based on moir patterns mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104637025B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104859329A (en) * | 2015-05-22 | 2015-08-26 | 陕西科技大学 | Moire pattern anti-fake method 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 |
| 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 |
| CN106926599A (en) * | 2017-02-20 | 2017-07-07 | 陕西科技大学 | A kind of preparation method for printing interleave and false proof dynamic moire line |
| CN108621534A (en) * | 2018-05-09 | 2018-10-09 | 上海紫恩数码科技有限公司 | Network detecting method is hit before the plate-making of different resolution mixed printing |
| CN108773222A (en) * | 2018-06-06 | 2018-11-09 | 合肥信亚达智能科技有限公司 | A kind of improved phase modulation based on moir patterns effect |
| CN108833734A (en) * | 2018-06-06 | 2018-11-16 | 合肥思博特软件开发有限公司 | A method of the prefabricated anti-counterfeiting information in host image |
| 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 |
| 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 |
| CN111402706A (en) * | 2020-04-29 | 2020-07-10 | 广东聚航新材料研究院有限公司 | Film with rasterization encryption pattern on surface and preparation method thereof |
| CN111462258A (en) * | 2020-03-31 | 2020-07-28 | 上海大学 | Texture line image vectorization method and system for manufacturing printed film |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1207818A (en) * | 1995-11-29 | 1999-02-10 | 图形安全系统公司 | Digital anti-counterfeiting software method and apparatus |
| US20030038974A1 (en) * | 2001-08-14 | 2003-02-27 | Huver Hu | Security document manufacturing method and apparatus using halftone dots that contain microscopic images |
| CN103903216A (en) * | 2014-03-11 | 2014-07-02 | 陕西科技大学 | Determination method based on raster anti-fake concealed image vector diagram line width |
| CN104268821A (en) * | 2014-09-02 | 2015-01-07 | 西安西正印制有限公司 | Graphic and text information hiding method based on combined screening technology |
-
2015
- 2015-01-28 CN CN201510042415.XA patent/CN104637025B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1207818A (en) * | 1995-11-29 | 1999-02-10 | 图形安全系统公司 | Digital anti-counterfeiting software method and apparatus |
| US20030038974A1 (en) * | 2001-08-14 | 2003-02-27 | Huver Hu | Security document manufacturing method and apparatus using halftone dots that contain microscopic images |
| CN103903216A (en) * | 2014-03-11 | 2014-07-02 | 陕西科技大学 | Determination method based on raster anti-fake concealed image vector diagram line width |
| CN104268821A (en) * | 2014-09-02 | 2015-01-07 | 西安西正印制有限公司 | Graphic and text information hiding method based on combined screening technology |
Non-Patent Citations (3)
| Title |
|---|
| 刘喆灿等: ""基于网点位置的半色调加网及信息隐藏算法"", 《北京信息科技大学学报》 * |
| 赵小梅等: ""基于莫尔效应的半色调图像处理防伪方法"", 《天津科技大学学报》 * |
| 钟云飞等: ""彩色印刷品莫尔纹防伪技术研究"", 《光学技术》 * |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104859329A (en) * | 2015-05-22 | 2015-08-26 | 陕西科技大学 | Moire pattern anti-fake method 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 |
| 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 |
| CN106926599A (en) * | 2017-02-20 | 2017-07-07 | 陕西科技大学 | A kind of preparation method for printing interleave and false proof dynamic moire line |
| CN108621534B (en) * | 2018-05-09 | 2020-02-14 | 上海紫恩数码科技有限公司 | Method for detecting screen collision before mixed printing platemaking with different resolutions |
| CN108621534A (en) * | 2018-05-09 | 2018-10-09 | 上海紫恩数码科技有限公司 | Network detecting method is hit before the plate-making of different resolution mixed printing |
| CN108773222A (en) * | 2018-06-06 | 2018-11-09 | 合肥信亚达智能科技有限公司 | A kind of improved phase modulation based on moir patterns effect |
| CN108833734A (en) * | 2018-06-06 | 2018-11-16 | 合肥思博特软件开发有限公司 | A method of the prefabricated anti-counterfeiting information in host image |
| 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 |
| 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 |
| CN111462258A (en) * | 2020-03-31 | 2020-07-28 | 上海大学 | Texture line image vectorization method and system for manufacturing printed film |
| CN111462258B (en) * | 2020-03-31 | 2023-09-15 | 上海大学 | Texture line image vectorization method and system for manufacturing printing film |
| CN111402706A (en) * | 2020-04-29 | 2020-07-10 | 广东聚航新材料研究院有限公司 | Film with rasterization encryption pattern on surface and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104637025B (en) | 2018-04-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104637025A (en) | Butt joint forgery prevention method based on Moire pattern mechanism | |
| CN104859329B (en) | A kind of moir patterns method for anti-counterfeit based on linear grating | |
| CN103903216B (en) | Determination method based on raster anti-fake concealed image vector diagram line width | |
| CN104268821B (en) | A kind of graph text information hidden method based on combination screening technology | |
| CN106891632A (en) | The preparation method of printed matter grating and the combined and spliced anti-fake mark of image-carrier | |
| CN104143199B (en) | Image processing method for color laser marking | |
| CN103400121A (en) | License plate locating method based on colorful binary image | |
| CN103839260A (en) | Method for matching simulation grating based on hidden image lattice point area ratio | |
| CN102930497A (en) | Halftone watermarking method based on pixel block odd-even check and pixel block error dispersion | |
| CN103489204A (en) | Method for automatically drawing two-dimensional color pencil drawings | |
| CN105118016A (en) | Graphics and text information hiding method based on visual interference | |
| CN108038903B (en) | Three-dimensional digital model generation method for building rock core model | |
| CN110120005A (en) | A kind of halftoning hidden image 3-D effect shows hidden method | |
| CN110120006B (en) | Amplified halftone hidden image based stereoscopic display and hiding method | |
| CN109118418A (en) | A kind of anti-counterfeiting mark embedding grammar based on dual-encryption channel | |
| CN109003220A (en) | A kind of image false-proof method based on Background Fractal process | |
| CN108898544A (en) | One kind being based on twin-channel grating method for anti-counterfeit | |
| CN106971384A (en) | A kind of image processing method and device | |
| CN108961143A (en) | A kind of grating application method with anti-copying function | |
| CN107067360B (en) | Robust steganography method based on textures synthesis | |
| CN110086956A (en) | A kind of halftoning hidden image relief effect shows hidden method | |
| CN109040512A (en) | A kind of grating anti-counterfeiting information based on color value hides and extracting method | |
| TW201732732A (en) | Method of deploying heterogeneous anti-counterfeit mesh points and virtual grey balance based on image segmentation for utilizing different high-frequency and low-frequency mesh point distributions in a colored image of a valuable security to facilitate authenticity verification | |
| CN108995433A (en) | A kind of anti-counterfeiting information based on phase modulation hides and recognition methods | |
| CN109035127A (en) | A kind of key setting method based on original image textural characteristics |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180420 |