Method and device for generating anti-fake plate grain pattern

Abstract

The invention discloses a method and device for generating an anti-counterfeiting plate grain pattern, and the method comprises the following steps: generating a wire harness group which completely covers an anti-counterfeiting pattern region based on the pattern region; wherein the wire harness group comprises a plurality of lines which are different in thickness and shape; and fusing the wire harness group with the anti-counterfeiting pattern to form an anti-counterfeiting pattern. According to the method, the generated single wire harness group or the wire harness group formed by superposing a plurality of wire harness groups is mapped to the anti-counterfeiting pattern, the wire harness group in each unit area of the anti-counterfeiting pattern is adjusted to be an irregular wire harness layer, and the pattern color gradation adjustment is combined, so that the plate pattern is formed in a multi-specification pattern combination form, and the difficulty of counterfeiting the anti-counterfeiting pattern is improved.

Description

Technical Field

[0001] The present invention relates to the field of printing anti-counterfeiting technology, and in particular to a method and device for generating an anti-counterfeiting plate pattern. Background Art

[0002] Adding anti-counterfeiting labels to product packaging is a commonly used product anti-counterfeiting technology. At present, there are various ways to make anti-counterfeiting labels, such as using laser radiation to make patterns, logos and characters on reflective sheets, and each batch of anti-counterfeiting labels also contains production information for easy inspection and traceability. However, most of the existing anti-counterfeiting labels have very simple structures and single anti-counterfeiting patterns, which are very easy to be counterfeited or imitated, causing a lot of troubles to manufacturers and consumers, and even causing significant losses. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a method and device for generating anti-counterfeiting patterns that have diverse patterns and can avoid being imitated.

[0004] In order to solve the above technical problems, a technical solution adopted by the present invention is to provide a method for generating an anti-counterfeiting pattern, comprising the following steps:

[0005] S1. Based on the anti-counterfeiting pattern area, generate a wire group that completely covers the pattern area; wherein the wire group includes a plurality of lines of different thicknesses and shapes;

[0006] S2, fusing the wire harness group with the anti-counterfeiting pattern to form an anti-counterfeiting plate pattern.

[0007] By adopting the above method, a wire harness group formed by multiple standard wire harness groups is set, and a corresponding first adjustment is made according to the color scale of the pattern. Then, a second adjustment is made on the basis of the number of dots according to the pattern of the first adjustment, so as to achieve the method of expressing the level by irregular, coarse and fine wire harness groups instead of simply expressing the color scale by amplitude modulation or frequency modulation dots. The plate image information has more specifications and styles, which increases the difficulty of imitating the anti-counterfeiting pattern.

[0008] Specifically, the wiring harness group includes a first wiring harness group, and the step of generating the first wiring harness group includes:

[0009] S101, configuring a first edge line and a second edge line based on an anti-counterfeiting pattern area, respectively, wherein the first edge line and the second edge line extend beyond a first edge and a second edge of the anti-counterfeiting pattern area, respectively;

[0010] S102, respectively configuring line diameter parameters for the first edge line and the second edge line, and adjusting the parameter changes of amplitude and frequency, so that the first edge line and the second edge line form unequal shapes;

[0011] S103, mixing the first edge line and the second edge line to form the first line group that completely covers the pattern area, the amplitude and frequency of the first line beams in the first line group increase or decrease in sequence from the first edge to the second edge, so that the amplitude and frequency of each first line beam are different.

[0012] Next, in the step S2, the following sub-steps are specifically included:

[0013] S21. Read the color scale of the anti-counterfeiting pattern and convert it into data. The color scale parameters of the pattern are mapped to the first wire harness group, so that the wire diameter of each first wire harness in the first wire harness group is adaptively changed according to the color scale parameters to form the anti-counterfeiting pattern; wherein, when the color scale value is low, the wire diameter adaptability becomes smaller, and when the color scale value is high, the wire diameter adaptability becomes larger.

[0014] In addition, there is another form of generating a wire harness group, that is, the wire harness group also includes a second wire harness group, and a second wire harness in the second wire harness group has a predetermined angle with a first wire harness in the first wire harness group; after the step of generating the first wire harness group, a second wire harness group generating sub-step is also included,

[0015] S104, configuring a third edge line and a fourth edge line based on the anti-counterfeiting pattern area, respectively, wherein the third edge line and the fourth edge line extend beyond a third edge and a fourth edge of the anti-counterfeiting pattern area respectively;

[0016] S105, respectively configuring line diameter parameters for the third edge line and the fourth edge line, and adjusting the parameter changes of amplitude and frequency, so that the third edge line and the fourth edge line form unequal shapes;

[0017] S106, mixing the third edge line and the fourth edge line to form the second line group that completely covers the pattern area, wherein the amplitude and frequency of the second line beams in the second line group increase or decrease in sequence from the third edge to the fourth edge, so that the amplitude and frequency of each second line beam are different;

[0018] S107 , superimposing the first wire harness group and the second wire harness group to form the wire harness group.

[0019] Then, step S2 specifically includes the following sub-steps:

[0020] S21', reading the color scale of the anti-counterfeiting pattern and converting it into data, mapping the color scale parameters of the pattern to the superimposed wire harness group, so that the wire diameters of the first wire harness and the second wire harness in the wire harness group are adaptively changed according to the color scale parameters to form the anti-counterfeiting plate pattern; wherein, when the color scale value is low, the wire diameter adaptability becomes smaller, and when the color scale value is high, the wire diameter adaptability becomes larger.

[0021] After step S21 or step S21', the following sub-steps are also included:

[0022] S22. The plate pattern is exported and placed on the corresponding color channel. According to the color scale of the original pattern, the dot ratio of the plate pattern is locally adjusted by adding or subtracting the screen to perform a secondary effect adjustment.

[0023] The step S22 specifically includes the following sub-steps:

[0024] S221, reading the light and dark levels of the pattern and converting them into corresponding color scale data, and then mapping the corresponding color scale data in the pattern to the first line group based on baseline fusion or the line group after fusion and superposition, the light tone remains unchanged on the line group, and the dark tone is displayed in a bold display state on the line group;

[0025] S222. Parameters such as line thickness, relief height, and relief line width of each line bundle are configured to adjust the visual effect suitable for the naked eye, so as to further increase the difficulty of counterfeiting the anti-counterfeiting pattern.

[0026] Wherein, in the step S221, it also includes reducing the number of dots in the local area with a lower tone value to approach the tone contrast value of the original image.

[0027] At the same time, a corresponding anti-counterfeiting pattern generating device is also provided, including:

[0028] A wire group generation module is used to generate a wire group that completely covers the anti-counterfeiting pattern area based on the anti-counterfeiting pattern area; wherein the wire group includes a plurality of lines of different thicknesses and shapes;

[0029] The plate pattern generation module is used to merge the wire harness group with the anti-counterfeiting pattern to form an anti-counterfeiting plate pattern.

[0030] Beneficial effect: The present invention maps a generated single wire harness group or a wire harness group formed by superimposing multiple wire harness groups onto an anti-counterfeiting pattern, adjusts the wire harness groups within each unit area of ​​the anti-counterfeiting pattern into irregular wire harness layers, and combines the adjustment of the pattern color levels to form a plate pattern in the form of a combination of multiple specifications and styles, thereby increasing the difficulty of imitating the anti-counterfeiting pattern. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0032] Figure 1 This is a schematic diagram of an initial state of setting a baseline in an embodiment of the present invention.

[0033] Figure 2 This is a schematic diagram of setting the initial state of the upper and lower edge lines in an embodiment of the present invention.

[0034] Figure 3 This is a schematic diagram of the combination of the first wiring harness group.

[0035] Figure 4 A schematic diagram showing the effect of adjusting the line thickness by adjusting the color contrast in the first line group.

[0036] Figure 5 This is a schematic diagram of the combined effect of the second wiring harness group.

[0037] Figure 6 This is a schematic diagram of the effect of superimposing two harness groups.

[0038] Figure 7 A schematic diagram of the effect of adjusting the plate texture.

[0039] Figure 8 It is a schematic diagram of the manufacturing principle of the present invention.

[0040] Fig. 9 It is a structural block diagram of the device of the present invention. DETAILED DESCRIPTION

[0041] like Figures 1 to 8 As shown, the anti-counterfeiting pattern generation method in the present invention is:

[0042] First, the pattern content to be applied for anti-counterfeiting is determined according to the graphic layout of the printed piece, then the color level contrast of the pattern is adjusted, and the pattern is saved as a tif vector format file (such as tif format), and then a baseline is set in the mapping software of the anti-counterfeiting pattern generation device, and at least two edge line baselines are set on the two-dimensional plane. Specifically,

[0043] Example 1

[0044] Among them, firstly, the graphic format of the printed piece is analyzed to determine the pattern content that needs to be applied for anti-counterfeiting, then, the color level contrast of the pattern is adjusted, and the pattern is saved as a vector format file (such as tif format), and then, a baseline is set in the anti-counterfeiting pattern generation device, and at least two edge lines are set on the two-dimensional plane. Specifically, Figure 1As shown, the circle position is the range of the anti-counterfeiting pattern. A baseline is set as the first line bundle and is located in the middle of the pattern. The length of the baseline must completely cover the pattern. The baseline is within any angle (0°~180°) on the two-dimensional plane. Then the following parameters are set for the baseline, including copying and moving the baseline in the upper and lower directions beyond the size range of the pattern to form the first edge line and the second edge line, and hiding the baseline. The first edge line and the second edge line exceed the edge of the pattern by 5mm respectively, and the projection lengths of the two edge lines at the left and right ends exceed the edge of the pattern by 4mm respectively.

[0045] Then, if Figure 2 As shown, the wire diameter parameters are configured for the first edge line and the second edge line respectively, the wire diameter range is 0.06mm~0.2mm, and the changes in amplitude and frequency parameters are adjusted to make the first edge line and the second edge line form unequal shapes; preferably, the wire diameters of the first edge line and the second edge line are 0.15mm, and in addition, the amplitude of the first edge line is preferably 2mm, and the frequency is preferably 4; the amplitude of the second edge line is preferably 1.5mm, and the frequency is preferably 7.

[0046] Next, the first edge line and the second edge line are mixed to form a first line group (eg Figure 3 As shown in the left figure of ): During the mixing process, the spacing between the lines is greater than or equal to the wire diameter value of the first wire bundle. For example, the wire diameter is 0.15mm and the line spacing is 0.3mm. After mixing, the shape of the first wire bundle group at each position in the unit area is different (such as Figure 3 , that is, when the first wire group is covered in the pattern, the pattern formed has a different grid shape at each position within a unit area.

[0047] Subsequently, the pattern generated by a single wire group is imported into the anti-counterfeiting pattern generation device, and the color scale of the pattern is read and converted into data. The corresponding color scale data in the pattern is mapped to the wire group after mixing based on the edge line by calculation of the pattern generation module. The wires change in thickness according to the contrast of the color scale. When the color scale value is low, the wires become thinner, and when the color scale value is high, the wires become thicker. Figure 4 As shown, the baseline angle is 0°, the line bundle in the area with low gradation value (bright position) is 0.03mm, the line bundle in the area with high gradation value (dark position) is 0.26mm, the line bundle in the area with mid-tone value is formed by transitioning from 0.03mm to 0.26mm, and the line spacing of all lines is 0.3mm.

[0048] The above is a single wire group generated. In addition, a superimposed wire group can also be generated. Specifically,

[0049] Example 2

[0050] Different from Example 1, a new baseline is set within the pattern range as the second line bundle, and the length of the second line bundle also needs to completely cover the pattern. The second line bundle selects any angle except the angle of the first line bundle on the two-dimensional plane, and then sets parameters for the baseline. The second line bundle is copied and moved in the upper and lower directions beyond the size range of the pattern to form a third edge line and a fourth edge line, and the newly set second line bundle as the baseline is hidden, such as Figure 5 The effect is shown.

[0051] According to the corresponding steps in Example 1, the parameters of the third edge line and the fourth edge line are set, and it is still necessary to ensure that the spacing between the lines is greater than or equal to the line diameter value of the second line bundle. Specifically, the baseline angle is 90°, the line thickness of the third edge line and the fourth edge line is 0.15 mm, the third edge line, the amplitude is 1.6 mm, the frequency is 4, the fourth edge line, the amplitude is 1 mm, and the frequency is 6. Subsequently, the third edge line and the fourth edge line are mixed to generate a second line bundle group, and the first line bundle group and the second line bundle group are superimposed and covered in the pattern. The formed pattern is as shown in FIG. Figure 6 The effect shown,

[0052] Then, the second wire group formed in this way sets the color scale parameters differently from the parameters in Example 1. Specifically, the wire group in the area with low color scale value (bright position) is 0.04mm, the wire group in the area with high color scale value (dark position) is 0.2mm, and the wire group in the mid-tone area with color scale value is formed by a transition of 0.04mm to 0.2mm. The line spacing of all lines is 0.28mm, thereby forming a superimposed plate pattern.

[0053] In this way, the patterns generated by the two embodiments have rich visual effects, and the texture presents irregular, large amount of information, and anti-equipment scanning characteristics. At this time, the color scale of the pattern is transformed into that expressed by the thickness change of the line, instead of simply expressing the color scale by amplitude modulation or frequency modulation dots; especially the superimposed plate pattern, due to the difference in the initial data settings of each wire harness group, within each unit area, under the premise of different line styles, the formed wire harness group style is also different, which increases the difficulty of imitation.

[0054] Finally, export the plate pattern and place it on the corresponding color channel (CMYK mode or grayscale mode). Then, according to the color level of the original pattern, adjust the dot ratio of the local plate pattern by adding or subtracting the screen to make a secondary effect adjustment. Specifically, taking the grayscale mode as an example, for the local area with low color level value, reduce the dot ratio by 1% to 50%, so as to get close to the color level contrast value of the original image. Figure 7As shown in the figure, the dots in the bright area are reduced from solid (100%) to 10% dots (10%), and the dots in the dark reflective area on the lower right are reduced from solid to 50% dots (50%), and no changes are made to other places.

[0055] By analogy, multiple line bundle groups based on different baseline angles are superimposed, and then the line bundle groups are set according to the above operations. In this way, the overall pattern formed is manifested as an irregular linear cluster group with varying thicknesses, which can further increase the difficulty of imitating the anti-counterfeiting pattern.

[0056] The prepared pattern is saved and exported as a file, then transferred to the processor of the printing device and printed on the product.

[0057] It should be noted that the anti-counterfeiting pattern of this embodiment is set in grayscale mode, and can also be used and set under the conditions of monochrome or multi-color groups in CMYK mode. Since this application mainly involves the superposition formation of a single wire harness group or multiple wire harness groups and the changing combination of wire harness thickness, amplitude, and frequency settings to reflect an irregular pattern, it does not involve program adjustment of the CMYK mode and will not be repeated here.

[0058] Example 3

[0059] See also Figure 8 and Fig. 9 The present invention also discloses an anti-counterfeiting pattern generating device, which generates an anti-counterfeiting pattern based on the method described above. Correspondingly, the anti-counterfeiting pattern generating device includes:

[0060] A wire group generation module is used to generate a wire group that completely covers the anti-counterfeiting pattern area based on the anti-counterfeiting pattern area; wherein the wire group includes a plurality of lines of different thicknesses and shapes;

[0061] The plate pattern generation module is used to merge the wire harness group with the anti-counterfeiting pattern to form an anti-counterfeiting plate pattern.

Claims

1. A method for generating an anti-counterfeiting pattern, characterized in that: The following steps are involved: S1. Based on the anti-counterfeiting pattern area, generate a wire group that completely covers the pattern area; wherein the wire group includes a plurality of lines of different thicknesses and shapes; S2, fusing the wire harness group with the anti-counterfeiting pattern to form an anti-counterfeiting plate pattern.

2. The method for generating an anti-counterfeiting pattern according to claim 1, characterized in that: The wiring harness group includes a first wiring harness group, and the step of generating the first wiring harness group includes: S101, configuring a first edge line and a second edge line based on an anti-counterfeiting pattern area, respectively, wherein the first edge line and the second edge line extend beyond a first edge and a second edge of the anti-counterfeiting pattern area, respectively; S102, respectively configuring line diameter parameters for the first edge line and the second edge line, and adjusting the parameter changes of amplitude and frequency, so that the first edge line and the second edge line form unequal shapes; S103, mixing the first edge line and the second edge line to form the first line group that completely covers the pattern area, the amplitude and frequency of the first line beams in the first line group increase or decrease in sequence from the first edge to the second edge, so that the amplitude and frequency of each first line beam are different.

3. The method for generating an anti-counterfeiting pattern according to claim 2, characterized in that: In the step S2, the following sub-steps are specifically included: S21. Read the color scale of the anti-counterfeiting pattern and convert it into data. The color scale parameters of the pattern are mapped to the first wire harness group, so that the wire diameter of each first wire harness in the first wire harness group is adaptively changed according to the color scale parameters to form the anti-counterfeiting pattern; wherein, when the color scale value is low, the wire diameter adaptability becomes smaller, and when the color scale value is high, the wire diameter adaptability becomes larger.

4. The method for generating an anti-counterfeiting pattern according to claim 2, characterized in that: The wiring harness group further includes a second wiring harness group, wherein a second wiring harness in the second wiring harness group has a predetermined angle with a first wiring harness in the first wiring harness group; after the step of generating the first wiring harness group, the step of generating the second wiring harness group further includes a sub-step of generating the second wiring harness group. S104, configuring a third edge line and a fourth edge line based on the anti-counterfeiting pattern area, respectively, wherein the third edge line and the fourth edge line extend beyond a third edge and a fourth edge of the anti-counterfeiting pattern area respectively; S105, respectively configuring line diameter parameters for the third edge line and the fourth edge line, and adjusting the parameter changes of amplitude and frequency, so that the third edge line and the fourth edge line form unequal shapes; S106, mixing the third edge line and the fourth edge line to form the second line group that completely covers the pattern area, wherein the amplitude and frequency of the second line beams in the second line group increase or decrease in sequence from the third edge to the fourth edge, so that the amplitude and frequency of each second line beam are different; S107 , superimposing the first wire harness group and the second wire harness group to form the wire harness group.

5. The method for generating an anti-counterfeiting pattern as claimed in claim 4, characterized in that: In the step S2, the following sub-steps are specifically included: S21', reading the color scale of the anti-counterfeiting pattern and converting it into data, mapping the color scale parameters of the pattern to the superimposed wire harness group, so that the wire diameters of the first wire harness and the second wire harness in the wire harness group are adaptively changed according to the color scale parameters to form the anti-counterfeiting plate pattern; wherein, when the color scale value is low, the wire diameter adaptability becomes smaller, and when the color scale value is high, the wire diameter adaptability becomes larger.

6. A method for generating an anti-counterfeiting pattern as claimed in claim 3 or 5, characterized in that: After step S21 or step S21', the following sub-steps are also included: S22. The plate pattern is exported and placed on the corresponding color channel. According to the color scale of the original pattern, the dot ratio of the plate pattern is locally adjusted by adding or subtracting the screen to perform a secondary effect adjustment.

7. The method for generating an anti-counterfeiting pattern according to claim 6, characterized in that: The step S22 specifically includes the following sub-steps: S221, reading the light and dark levels of the pattern and converting them into corresponding color scale data, and then mapping the corresponding color scale data in the pattern to the first line group based on baseline fusion or the line group after fusion and superposition, wherein the light tone remains unchanged on the line group, and the dark tone is displayed in a bold display state on the line group; S222. Parameters such as line thickness, relief height, and relief line width of each line bundle are configured to adjust the visual effect suitable for the naked eye, so as to further increase the difficulty of counterfeiting the anti-counterfeiting pattern.

8. The method for generating an anti-counterfeiting pattern according to claim 7, characterized in that: In the step S221, it also includes reducing the dot ratio in the local area with a lower tone value to approach the tone contrast value of the original image.

9. An anti-counterfeiting pattern generating device, comprising: A wire group generation module is used to generate a wire group that completely covers the anti-counterfeiting pattern area based on the anti-counterfeiting pattern area; wherein the wire group includes a plurality of lines of different thicknesses and shapes; The plate pattern generation module is used to merge the wire harness group with the anti-counterfeiting pattern to form an anti-counterfeiting plate pattern.

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