CN110348553B - Laser marking method for random three-dimensional code - Google Patents
Laser marking method for random three-dimensional code Download PDFInfo
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- CN110348553B CN110348553B CN201910581641.3A CN201910581641A CN110348553B CN 110348553 B CN110348553 B CN 110348553B CN 201910581641 A CN201910581641 A CN 201910581641A CN 110348553 B CN110348553 B CN 110348553B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/362—Laser etching
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
- G06K19/06037—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking multi-dimensional coding
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Abstract
The invention discloses a laser marking method of a random three-dimensional code, which belongs to the field of laser processing and comprises the following steps: changing a black area of the two-dimensional code image into a color to generate a three-dimensional code color image; generating marking paths according to the three-dimensional code color image, classifying the marking paths according to colors, and acquiring classified storage information; marking random three-dimensional codes on the multilayer anti-counterfeiting module by adopting a laser according to the classified storage information; the multilayer anti-counterfeiting module is formed by overlapping materials with different colors, and the colors of the materials comprise the color types in the three-dimensional code color image. The marking time is fixed, the output power of the laser is modulated according to the received classified storage information, or the output power of the laser is fixed, the marking time is adjusted according to the received classified storage information, three-dimensional codes with different depths and concave-convex feeling can be quickly marked on the multilayer anti-counterfeiting module after one-pass processing path is completed, and the processing efficiency is greatly improved.
Description
Technical Field
The invention belongs to the field of laser processing, and particularly relates to a laser marking method of a random three-dimensional code.
Background
The two-dimensional code is a portable data file with high density and high information content, can encode digitalized information such as photos, fingerprints, palm prints, signatures, sounds, characters and the like, is easy to manufacture and low in cost, can be printed on paper, cards, PVC (polyvinyl chloride) and even metal surfaces by utilizing the existing printing technologies such as dot matrixes, lasers, ink jet, heat sensitive cards, card making machines and the like, and plays an increasingly important role as an information carrier in daily life.
The two-dimensional code processed on the common plane is easy to copy at present, and the anti-counterfeiting capability is poor, so that the random three-dimensional code is added with random color information on the basis of the two-dimensional code and is processed on a special multilayer anti-counterfeiting material, the random three-dimensional code has the characteristics of structure, three-dimensional property, uniqueness and no duplication, the two-dimensional code and the anti-counterfeiting are combined, the defect that the common two-dimensional code is easy to copy is overcome, and the random three-dimensional code can be widely applied to products needing strict anti-counterfeiting marks.
Since random three-dimensional codes have been proposed recently, the processing techniques thereof are not yet sufficiently mature. At present, the random three-dimensional code is processed by adopting a mechanical engraving method, and engraving different depths and different colors on the special multilayer anti-counterfeiting material by a graver.
The traditional mechanical processing method is contact processing, mechanical extrusion and mechanical stress are caused to a processing material, the processing is influenced by the physical property and the mechanical property of the material, the processing speed is low, the processing efficiency is low, and the requirement of random three-dimensional code processing cannot be met.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a laser marking method of a random three-dimensional code, and aims to solve the problem of low efficiency of the conventional mechanical processing of the random three-dimensional code.
In order to achieve the above object, the present invention provides a laser marking method for a random three-dimensional code, comprising:
(1) changing a black area of the two-dimensional code image into a color to generate a three-dimensional code color image;
(2) generating marking paths according to the three-dimensional code color image, classifying the marking paths according to colors, and acquiring classified storage information;
(3) marking random three-dimensional codes on the multilayer anti-counterfeiting module by adopting a laser according to the classified storage information;
the multilayer anti-counterfeiting module is formed by overlapping materials with different colors, and the colors of the materials comprise the color types in the three-dimensional code color image.
Preferably, step (1) specifically comprises:
dividing a black area of the two-dimensional code image into a plurality of cell blocks with equal areas, and setting the sizes of color blocks;
the size of the color block is integral multiple of the unit block;
dividing the two-dimensional code image according to color blocks, and if the two-dimensional code image is not an integral multiple of the color blocks, taking the remaining two-dimensional code image part after division as a color block;
and filling different colors randomly by taking the color blocks as units to generate a three-dimensional code color image.
Preferably, the step (2) specifically comprises:
(2.1) extracting vector outline data of the three-dimensional code image by using an edge process contour tracing method;
(2.2) generating a marking path according to the vector contour data;
(2.3) classifying the generated marking paths according to colors in the three-dimensional code color image to acquire classified storage information;
preferably, the method of generating the marking path includes a contour filling method and a spiral tracing method;
the contour filling method comprises the steps of marking by taking a scanning line as a unit, selecting the outermost circle vector contour of a two-dimensional code image, and then carrying out scanning line filling on the contour until a scanning line type marking path is generated;
the spiral tracking method uses a circle as a unit for marking, firstly extracts the outermost circle vector outline of the two-dimensional code image, changes the pixel points of the current outermost circle vector outline into background colors to update the two-dimensional code image, and then extracts the outermost circle vector outline of the updated two-dimensional code image until the two-dimensional code image is all the background colors, so that a spiral marking path is generated.
Preferably, the black area of the two-dimensional code image is randomly filled with three colors of red, green and blue in units of color blocks;
when the marking paths are classified, sequentially taking red, green and blue as foreground colors, and taking other colors as background colors, and obtaining marking paths corresponding to the three colors;
the first layer of material of the multilayer anti-counterfeiting module is a white coating layer; the second layer is green; the third layer of material is red; the fourth layer is blue;
the method for marking the multilayer anti-counterfeiting module by the laser in the step (3) comprises the following steps:
when the marking time is fixed, the output power of the laser is modulated according to the received classified storage information, and target color materials on the multilayer anti-counterfeiting module are marked;
or when the output power of the laser is fixed, the marking time is adjusted according to the received classified storage information, and the target color materials on the multilayer anti-counterfeiting module are marked.
Through the technical scheme, compared with the prior art, the invention has the following beneficial effects:
(1) according to the laser marking method of the random three-dimensional code, provided by the invention, firstly, a three-dimensional code color image is generated by adding various random colors on the basis of a black and white two-dimensional code image, so that the randomness of the three-dimensional code is ensured, and the anti-counterfeiting function is ensured; on the basis of the three-dimensional code color image, vector marking paths corresponding to different colors are obtained according to color information and are used as classified storage information; according to the classified storage information, a laser is adopted to output laser beams to mark random three-dimensional codes on the multilayer anti-counterfeiting module; the marking time is fixed, the output power of the laser is modulated according to the received classified storage information, or the output power of the laser is fixed, the marking time is adjusted according to the received classified storage information, three-dimensional codes with different depths and concave-convex feeling can be quickly marked on the multilayer anti-counterfeiting module after one processing path is completed, and the processing efficiency is greatly improved compared with that of the traditional mechanical processing. In the marking process, the method for modulating the output power of the laser in real time is higher in efficiency than the method for adjusting the marking time by using the output power to a certain extent.
(2) The method comprises the steps of extracting vector outline data of a two-dimensional code image by adopting a side process contour tracing method; two methods for generating the marking path are provided, including a contour filling method and a spiral tracing method; the spiral tracking method uses a circle as unit marking, the contour filling method uses a scanning line as unit marking, and compared with the contour filling method, the spiral tracking method has the advantages that the path of the obtained marking path in the marking process is shorter, and the marking efficiency is higher.
(3) The method comprises the steps of dividing a black area of a two-dimensional code image into a plurality of cell blocks with equal areas, and setting the size of a color block which is an integral multiple of the cell blocks; dividing the two-dimensional code image according to color blocks, wherein the size of each color block is equal, and if the two-dimensional code image is not an integral multiple of the color block, the remaining two-dimensional code image part after division is used as a color block; the color blocks are used as units, the color is randomly filled to obtain the three-dimensional code color image, and the problem that the complexity of subsequent classified storage data is higher due to the fact that the color blocks are different in size and irregular is solved.
(4) The method comprises the steps of filling three colors of red, green and blue into a black area of a two-dimensional code image at random; correspondingly, the multilayer anti-counterfeiting module is designed in such a way that the first layer of material is a white coating layer; the second layer is green; the third layer of material is red; the fourth layer of the anti-counterfeiting ink is blue, so that the feasibility of three-dimensional codes with different laser marking depths and concave-convex feeling is guaranteed, and meanwhile, the degree of distinction between three colors and white is high, so that the anti-counterfeiting ink is easier to distinguish while the anti-counterfeiting ink is guaranteed.
Drawings
FIG. 1 is a flow chart of laser marking a color image of a random three-dimensional code provided by the present invention;
FIG. 2 is a schematic diagram of generating a three-dimensional code color image from a black-and-white two-dimensional code image according to an embodiment;
fig. 3 is a schematic diagram of an embodiment of obtaining a marking path from a three-dimensional code color image.
Fig. 4 is a schematic structural diagram of a multilayer anti-counterfeiting module provided by the embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a laser marking method of a random three-dimensional code, which utilizes a laser marking machine to process the random, colorful and different-depth structural three-dimensional code on a special multilayer anti-counterfeiting module, fully exerts the advantages of high laser non-contact processing speed and high efficiency, and overcomes the defect of low efficiency of the traditional mechanical processing.
As shown in fig. 1, the present invention provides a laser marking method for a random three-dimensional code, including:
(1) changing a black area of the two-dimensional code image into a color to generate a three-dimensional code color image;
(2) generating marking paths according to the three-dimensional code color image, classifying the marking paths according to colors, and acquiring classified storage information;
(3) marking random three-dimensional codes on the multilayer anti-counterfeiting module by adopting a laser according to the classified storage information;
the multilayer anti-counterfeiting module is formed by overlapping materials with different colors, and the colors of the materials comprise the color types in the three-dimensional code color image.
Preferably, as shown in fig. 2, step (1) specifically includes:
(1.1) dividing a black area of the two-dimensional code image into a plurality of unit blocks with equal areas, and setting the sizes of color blocks;
the size of the color block is integral multiple of the unit block;
(1.2) dividing the two-dimensional code image according to color blocks, and if the two-dimensional code image is not an integral multiple of the color blocks, taking the rest two-dimensional code image part after division as one color block;
and (1.3) randomly filling different colors by taking the color blocks as units to generate a three-dimensional code color image.
Preferably, as shown in fig. 3, the step (2) includes:
(2.1) extracting vector outline data of the three-dimensional code image by using an edge process contour tracing method;
(2.2) marking according to the vector contour data to generate a marking path;
and (2.3) classifying the generated marking paths according to colors in the three-dimensional code color image to acquire classified storage information.
Preferably, the method of generating the marking path includes a contour filling method and a spiral tracing method;
as shown in fig. 3, the contour filling method uses a scanning line as a unit for marking, selects the vector contour of the outermost circle of the two-dimensional code image, and then performs scanning line filling on the contour until a scanning line type marking path is generated;
the spiral tracking method uses a circle as a unit for marking, firstly extracts the outermost circle vector outline of the two-dimensional code image, changes the pixel points of the current outermost circle vector outline into background colors to update the two-dimensional code image, and then extracts the outermost circle vector outline of the updated two-dimensional code image until the two-dimensional code image is all the background colors, so that a spiral marking path is generated.
Examples
(1) Changing a black area of the two-dimensional code image into a color to generate a three-dimensional code color image;
traversing the whole image on a black-white two-dimensional code image to obtain the size of a unit block which can form a black area of the image, defining the size of a color block according to the size of the unit block, wherein the size of the color block is integral multiple of the size of the unit block, dividing the whole black-white two-dimensional code image according to the size of the color block, if the size of the two-dimensional code image is not integral multiple of the color block, regarding the rest area as the color block, traversing the whole two-dimensional code image, randomly changing the black area corresponding to the same color block into one of three colors of red, green and blue (R, G, B), keeping a white area unchanged, and finally generating a random color three-dimensional code image;
the color disorder degree of the three-dimensional code color image can be controlled by setting the size of the color block, and the randomness of the three-dimensional code image is ensured due to the randomness of color information, so that the three-dimensional code is difficult to copy, and the anti-counterfeiting capability is improved;
the two-dimensional code is a QR code, and in this embodiment, the two-dimensional code may be any type of two-dimensional code currently existing, and the specific type of the two-dimensional code is not limited;
(2) generating marking paths according to the three-dimensional code color image, classifying the marking paths according to colors, and acquiring classified storage information;
extracting vector outline data of the two-dimensional code image by using a side process contour tracing method; further, a marking path is obtained, which is as follows:
after the outermost contour of the two-dimensional code image is obtained, changing the pixel points of the contour into a background color, then using a contour tracing method to obtain the outermost contour on the transformed image, repeating the operations in sequence until all the pixel points in the two-dimensional code image become the background color, and obtaining a spiral marking path;
as shown in fig. 3, in the process of obtaining the marking path, the marking path corresponding to the area with different colors is obtained by selecting the foreground color, which specifically includes: selecting green as a foreground color, and taking the areas of other colors as background colors to obtain a marking path corresponding to the green area; selecting red as a foreground color, and taking the areas of other colors as background colors to obtain a marking path corresponding to the red area; selecting blue as a foreground color, and taking the areas of other colors as background colors to obtain a marking path corresponding to the blue area;
(3) marking random three-dimensional codes on the multilayer anti-counterfeiting module by adopting a laser according to the classified storage information;
as shown in fig. 4, the first layer of material of the multi-layer anti-counterfeiting module is a white coating layer; the second layer is green; the third layer of material is red; the fourth layer is blue; in the marking process, the output power of the carbon dioxide laser is controlled in real time by changing the PWM output duty ratio of the laser, and different depths are marked at the same time on the multilayer anti-counterfeiting module by different output powers, so that different colors are presented; when marking a green area in the three-dimensional code, the PWM output duty ratio is minimum, so that the output power of laser can mark off the white coating layer of the first layer to present the green color of the second layer; when marking a red area in the three-dimensional code, increasing the PWM output duty ratio to enable the thickness of the marking to be larger than the sum of the first layer and the second layer and smaller than the sum of the first layer and the second layer, and showing the red color of the third layer; when marking a blue area in the three-dimensional code, the PWM output duty ratio is maximum, the thickness of marking is larger than the sum of the first three layers and smaller than the total thickness of the material, the blue color of the fourth layer is presented, and random, colored and different-depth structural three-dimensional codes can be obtained after one-time processing path is completed;
in summary, according to the laser marking method for the random three-dimensional code provided by the invention, firstly, a three-dimensional code color image is generated by adding various random colors on the basis of a black and white two-dimensional code image, so that the randomness of the three-dimensional code is ensured, and the anti-counterfeiting function is ensured; on the basis of the three-dimensional code color image, vector marking paths corresponding to different colors are obtained according to color information and are used as classified storage information; according to the classified storage information, a laser is adopted to output laser beams to mark random three-dimensional codes on the multilayer anti-counterfeiting module; the marking time is fixed, the output power of the laser is modulated according to the received classified storage information, or the output power of the laser is fixed, the marking time is adjusted according to the received classified storage information, three-dimensional codes with different depths and concave-convex feeling can be quickly marked on the multilayer anti-counterfeiting module after one processing path is completed, and the processing efficiency is greatly improved compared with that of the traditional mechanical processing. In the marking process, the method for modulating the output power of the laser in real time is higher in efficiency than the method for adjusting the marking time by using the output power to a certain extent.
The marking path generated by the spiral tracing method takes a circle as unit marking, the marking path generated by the contour filling method takes a scanning line as unit marking, and compared with the contour filling method, the spiral tracing method has the advantages that the marking path is obviously shortened, and the marking efficiency can be obviously improved.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. A laser marking method of a random three-dimensional code is characterized by comprising the following steps:
(1) changing a black area of the two-dimensional code image into a color to generate a three-dimensional code color image;
(2) generating marking paths according to the three-dimensional code color image, classifying the marking paths according to colors, and taking the marking paths corresponding to different colors as classified storage information;
(3) marking random three-dimensional codes on the multilayer anti-counterfeiting module by adopting a laser according to the classified storage information; the multilayer anti-counterfeiting module is formed by overlapping materials with different colors, and the colors of the materials comprise the color types in the three-dimensional code color image.
2. The laser marking method according to claim 1, wherein the step (1) specifically comprises:
(1.1) dividing a black area of the two-dimensional code image into a plurality of unit blocks with equal areas, and setting the sizes of color blocks;
the size of the color block is integral multiple of the unit block;
(1.2) dividing the two-dimensional code image by taking the color blocks as units, and if the two-dimensional code image is not an integral multiple of the color blocks, taking the rest two-dimensional code image part after division as a color block;
and (1.3) randomly filling different colors by taking the color blocks as units to generate a three-dimensional code color image.
3. The laser marking method according to claim 1 or 2, wherein the step (2) comprises:
(2.1) extracting vector outline data of the three-dimensional code image by using an edge process contour tracing method;
(2.2) generating a marking path according to the vector contour data;
and (2.3) classifying the generated marking paths according to colors in the three-dimensional code color image to obtain classified storage information.
4. The laser marking method according to claim 3, wherein the method of generating the marking path includes a contour filling method and a spiral tracing method;
the contour filling method comprises the steps of marking by taking a scanning line as a unit, obtaining the outermost circle of vector contour of a two-dimensional code image, and then filling the contour with the scanning line to generate a scanning line type marking path;
the spiral tracking method uses a circle as a unit for marking, firstly extracts the outermost circle vector outline of the two-dimensional code image, changes the pixel points of the current outermost circle vector outline into background colors to update the two-dimensional code image, and then extracts the outermost circle vector outline of the updated two-dimensional code image until the two-dimensional code image is all the background colors, so that a spiral marking path is generated.
5. The laser marking method according to claim 1, wherein the laser marking method on the multilayer anti-counterfeiting module in the step (3) comprises the following steps:
when the marking time is fixed, the output power of the laser is modulated according to the received classified storage information, and target color materials on the multilayer anti-counterfeiting module are marked;
or when the output power of the laser is fixed, the marking time is adjusted according to the received classified storage information, and the target color materials on the multilayer anti-counterfeiting module are marked.
6. The laser marking method according to any one of claims 1, 2, 4, and 5, wherein three colors of red, green, and blue are randomly filled in a black area of the two-dimensional code image in units of color blocks;
the first layer of material of the multilayer anti-counterfeiting module is a white coating layer; the second layer is green; the third layer of material is red; the fourth layer of material is blue.
7. The laser marking method as claimed in claim 6, wherein the marking paths are classified by sequentially using red, green and blue as foreground colors and other colors as background colors, and the marking paths corresponding to the three colors are obtained.
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| CN112276370B (en) * | 2020-11-27 | 2021-10-08 | 华中科技大学 | Three-dimensional code laser marking method and system based on spatial light modulator |
| CN113399841B (en) * | 2021-06-16 | 2023-03-14 | 广东职业技术学院 | Three-dimensional drawing evaluation method and system based on laser engraving printer |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205302817U (en) * | 2015-12-14 | 2016-06-08 | 李峰 | Multilayer colour material of construction |
| CN105787540A (en) * | 2016-02-01 | 2016-07-20 | 中国计量学院 | Fluorescence 3D code generating method, identifying method, identifying device and system |
| CN205487103U (en) * | 2016-01-15 | 2016-08-17 | 李峰 | Random distribution's unsmooth anti -fake structure |
| CN107092948A (en) * | 2017-05-16 | 2017-08-25 | 李峰 | A kind of anti-counterfeit structure and method for anti-counterfeit based on stereochemical structure three-dimension code |
| CN206892906U (en) * | 2017-05-16 | 2018-01-16 | 李峰 | A kind of stereochemical structure three-dimension code and anti-counterfeit structure |
| CN108664837A (en) * | 2018-05-11 | 2018-10-16 | 李峰 | Three-dimension code produces integrated system |
| CN109016907A (en) * | 2018-06-20 | 2018-12-18 | 深圳市科彩印务有限公司 | A kind of variable two-dimension code on line printing method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4570389B2 (en) * | 2004-04-26 | 2010-10-27 | アライ株式会社 | Method for forming two-dimensional code by laser marking and laser marking apparatus |
| WO2012174545A1 (en) * | 2011-06-17 | 2012-12-20 | I-Property Holding Corp. | 3d laser coding in glass |
| CN108694430B (en) * | 2018-05-11 | 2021-08-03 | 海南天鉴防伪科技有限公司 | Three-dimensional code generation and analysis method |
| CN109950162B (en) * | 2019-03-22 | 2020-12-22 | 中国电子科技集团公司第三十八研究所 | Laser surface treatment method for improving ultrasonic bonding quality of bonding pad |
-
2019
- 2019-06-30 CN CN201910581641.3A patent/CN110348553B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205302817U (en) * | 2015-12-14 | 2016-06-08 | 李峰 | Multilayer colour material of construction |
| CN205487103U (en) * | 2016-01-15 | 2016-08-17 | 李峰 | Random distribution's unsmooth anti -fake structure |
| CN105787540A (en) * | 2016-02-01 | 2016-07-20 | 中国计量学院 | Fluorescence 3D code generating method, identifying method, identifying device and system |
| CN107092948A (en) * | 2017-05-16 | 2017-08-25 | 李峰 | A kind of anti-counterfeit structure and method for anti-counterfeit based on stereochemical structure three-dimension code |
| CN206892906U (en) * | 2017-05-16 | 2018-01-16 | 李峰 | A kind of stereochemical structure three-dimension code and anti-counterfeit structure |
| CN108664837A (en) * | 2018-05-11 | 2018-10-16 | 李峰 | Three-dimension code produces integrated system |
| CN109016907A (en) * | 2018-06-20 | 2018-12-18 | 深圳市科彩印务有限公司 | A kind of variable two-dimension code on line printing method |
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