CN103802517A

CN103802517A - Grating anti-counterfeiting technology based on fractal

Info

Publication number: CN103802517A
Application number: CN201410055049.7A
Authority: CN
Inventors: 钟云飞; 胡垚坚; 朱志勇; 王勇; 谷祥华; 朱广怀
Original assignee: Hunan University of Technology
Current assignee: Hunan University of Technology
Priority date: 2014-02-19
Filing date: 2014-02-19
Publication date: 2014-05-21
Anticipated expiration: 2034-02-19
Also published as: CN103802517B

Abstract

The invention belongs to the field of anti-counterfeiting technologies, and particularly relates to a grating anti-counterfeiting method based on fractal. The method can be directly achieved in normal printing modes such as offset litho printing, flexographic printing, intaglio printing, silk-screen printing and digital printing, and can be used for the surface of any printing stock such as paper, paper boards, plastic film and tinplates. The anti-counterfeiting method is finished in image-text design before printing, no cost is added, and the method is simple, easy to conduct, practical, wide in application range, and capable of being used for surface decoration anti-counterfeiting of packaging products, anti-counterfeiting of negotiable securities, anti-counterfeiting of print and anti-counterfeiting of simulated artwork copies. The method relates to three layers of anti-counterfeiting recognition structures, namely the appearance recognition structure, the linear moire pattern recognition structure and the halftone moire pattern anti-counterfeiting recognition structure. Through the three anti-counterfeiting recognition structures, the anti-counterfeiting capability grade is increased, the method is suitable for recognition of people of different levels, and is wide in application range. The method has high update capacity, and the timely anti-counterfeiting effect can be achieved only by replacing parameters regularly.

Description

A kind of grating anti-counterfeiting technology based on fractal

Technical field

The invention belongs to products antifake technique field, particularly, it relates to a kind of grating anti-counterfeiting technology based on fractal.

Background technology

Along with the development of modern science and technology, universal more and more specialization, grouping of the world economy, systematization and the networking of manufacturer that make to fake of technology, produce counterfeit and shoddy goods in enormous quantities.The gesture of mix the spurious with the genuine, not false without institute, fake products is walked crosswise the world, produces and has formed serious threat normal enterprise.False smoke, fake wine, counterfeit drug, false food, false electrical equipment, false cosmetics, false chemical fertilizer etc., be too deep for tears the vast consumer who deeply hurts.According to the relevent statistics, the annual counterfeit goods in the whole world is worth up to 5,000 hundred million Euros, is equivalent to 7% of quantum of world trade.In China, counterfeit and shoddy goods cause economic losses more than 2,000 hundred million RMB every year.In order to be strictly on guard against the injury of counterfeit and shoddy goods to business and consumer; the numerous and confused dynamics of investment strengthening in brand establish and protection of each enterprise; strengthen anti-counterfeiting power, so the anti-counterfeiting technology of various difference in functionalitys arises, promoted the research and development of anti-counterfeiting technology.

At present anti-counterfeiting technology has become a hot issue brand-new and that constantly incorporate advanced theory and technology, and it generally can be divided into physics anti-counterfeiting technology, chemical anti-counterfeiting technology, biology anti-counterfeiting technology, computer anti-counterfeiting technology, packaging structure anti-counterfeiting technology etc.Current packages printing is false proof for meeting the need of market, its development trend is printed false proof from anti-fake material (false proof stock and anti-forgery ink), change to directions such as false proof, the information-based encode false-proof of design plate-making, false proof, the personalized coding of printing technology are false proof.

And existing technology has proposed to utilize moir Lou Lou patterns principle to add the method that hides Info and identify in image, but have the following disadvantages: because the disguise hiding Info of utilizing moir Lou Lou patterns principle to add in image is fine, consumer cannot identify by sense organ, must be by identifying with the corresponding lenticular lenses that hides Info of adding; For line style moir Lou Lou patterns, hiding Info of choosing is mostly word, symbol, figure and LOGO etc., and the security element designing is printed on product, disguised not good enough, is easily cracked imitated; Because the disguise hiding Info of utilizing moir Lou Lou patterns principle to add in image is fine; so need constantly to adjust the angle of corresponding with it lenticular lenses in the time of identification; could will hide Info and demonstrate optimum efficiency; this needs certain professional knowledge well to go to tell truth from falsehood, and to ordinary consumer, identification is made troubles; Consumer need to use lenticular lenses in the time of identification, and so each packaging product will add specific lenticular lenses, can increase cost.

Summary of the invention

In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of grating anti-counterfeiting technology with fractal effect of the multi-level security feature that is easy to outward appearance observation identification, specific lenticular lenses detection identification, and the method has better integrated anti-counterfeit effect.The security pattern that uses the present invention to design, has three layers of anti-counterfeit recognition structure: ground floor is outward appearance recognition structure, because unique shape and the color of fractal security pattern itself, only need, by visually observing, just can identify, method is simple, fast, be suitable for ordinary consumer identification; The second layer is linear moir Lou Lou patterns recognition structure, lenticular lenses is positioned over and hides top, position, demonstrate and hide Info, businessman, law enfrocement official only need have corresponding lenticular lenses and just can distinguish true from false, the method avoids in each packing, being furnished with corresponding lenticular lenses, has saved cost; The 3rd layer of halftoning moir Lou Lou patterns anti-counterfeit recognition structure, is placed on icon top by corresponding lenticular lenses, and by rotating to an angle, demonstrates and hide Info.This recognition structure, not only can identify by detection of concealed information, and the site characteristic parameter that can also embed position by observation is distinguish true from false, but this need to have the expert of professional knowledge to identify.This method for anti-counterfeit completes in text design before seal, does not need to increase any cost, simple and practical, has wide range of applications, the surface decoration that can be used for packing articles is false proof, false proof, the publication of marketable securities false proof, that simulation art work copies is false proof.The feature of three layers of anti-counterfeit recognition structure has not only increased false proof dynamics, is suitable for different levels crowd recognition simultaneously, applied widely.For addressing the above problem, the technical solution used in the present invention is as follows:

A kind of grating anti-counterfeiting technology based on fractal, comprise and there is colored fractal security pattern, be hidden in stripe shape moir Lou Lou patterns information in the fractal security pattern of this colour and halftoning moir Lou Lou patterns information and printing and realize, the fractal security pattern of described colour is that the program by independently writing realizes drafting, and need to set suitable scheme of colour according to appearance design, finally generate colored fractal pattern out; The described stripe shape moir Lou Lou patterns information being hidden in the fractal security pattern of this colour be the simple fractal contour patterns drawn of program by independently writing by deformation, rearrange the anti-counterfeiting information obtaining; The described halftoning moir Lou Lou patterns information being hidden in the fractal security pattern of this colour be as required and selected any figure, word, symbol and LOGO etc. as the information of hidden image; Described printing realizes the process realizing at any stock surface (paper, cardboard, plastic sheeting, tinplate etc.) by normal mode of printing (offset lithography, flexographic printing, intaglio printing, serigraphy, digital printing) that refers to.The designed grating anti-counterfeiting technology based on fractal of the present invention has multiple, the multi-level antifalse effect of outward appearance identification and tool detection simultaneously, compare the existing false proof means of utilizing moir Lou Lou patterns principle to add in image to hide Info many double antiforge function, can play better antifalse effect, adulterator is difficult to produce the product with this antifalse effect by common technology, thereby reached false proof object, therefore method for anti-counterfeit of the present invention has better antifalse effect.

The present invention is achieved through the following technical solutions, and comprises the following steps:

Step 1, draws fractal anti-counterfeiting image by the program of independently writing;

Step 2, makes and treats hidden image, i.e. halftoning moir Lou Lou patterns security pattern and linear moir Lou Lou patterns security pattern, and make lenticular lenses I according to the relevant parameter of linear moir Lou Lou patterns security pattern;

Step 3, by fractal the colour generating in step 1 anti-counterfeiting image color separation, obtains green grass or young crops, product, Huang, black four color separation files, and according to color separation file screening data creating lenticular lenses II;

Step 4, a color separation file in four color separation files that obtain in selecting step three, as false proof mother matrix, adopts phase control method, and the implicit pattern for the treatment of in step 2 is hidden in to the diverse location of selected false proof master file;

Step 5, together with three the color separation Piece file mergences of the color separation file that is concealed with anti-counterfeiting information and other that obtain in step 4, reformulates with the fractal anti-counterfeiting image of the colour hiding Info;

Step 6, is applied to the fractal anti-counterfeiting image of the colour with hiding Info obtaining in step 5 in anti-fake product, and uses the lenticular lenses II obtaining in the lenticular lenses I that obtains in step 2 and step 3 to carry out anti-dummy check.

The invention has the beneficial effects as follows: utilize moir Lou Lou patterns principle to embed respectively simple image and fractal graph in fractal false proof icon, be combined with moir Lou Lou patterns fractal, not only retain artistic feeling and moir Lou Lou patterns technique that fractal effect has simple, the feature that exclusivity is strong, reliability is high, and solved fractal pattern identification difficulty and moir Lou Lou patterns is identified inconvenient shortcoming, improve anti-counterfeiting power.Any anti-counterfeiting technology all exists the false proof time limit simultaneously, need upgrade, and this method for anti-counterfeit has good renewal, only need to revise some parameters wherein, as the making parameter of fractal pattern, Color scheme parameter, site characteristic parameters etc., are just updated to new false proof effect.

Accompanying drawing explanation

Fig. 1 is the concrete enforcement of Information hiding and checkout procedure schematic diagram.

Fig. 2 is the technology of the present invention realization flow schematic diagram.

In figure:

1: colored fractal pattern and green grass or young crops, product, Huang, black four color separation files

2: treat hiding information 3: phase place is adjusted processing procedure

4: reconfigure four color separation files 5: the colored fractal pattern that contains anti-counterfeiting information

6: the lenticular lenses 7 of checking security information: the anti-counterfeiting information that check demonstrates.

The specific embodiment

In order to make object, technical scheme and the advantage of invention clearer, below in conjunction with accompanying drawing and example, the present invention is described in more detail.Should be appreciated that specific embodiment described herein is only in order to explain the present invention, and be not used in restriction invention.

As shown in Figure 1, application implementation mode of the present invention specifically comprises the following steps:

Step 1, according to product design theme, draws respectively a fractal contour patterns A and one according to appearance design the need match colors fractal anti-counterfeiting image of colour (as shown in Fig. 1 1) of generation by the program of independently writing;

Step 2, by fractal the colour generating in step 1 anti-counterfeiting image (as shown in Fig. 1 1) process RIP(Raster Image Processor) explanation of processor screening, obtain four color separation files (as 1-green grass or young crops in Fig. 1,1-product, 1-Huang, shown in 1-is black), and according to the corresponding lenticular lenses II of RIP screening data creating of color separation file;

Step 3, according to design needs, hidden image five-pointed star (as shown in 2-1 in Fig. 1) is treated in selection, treat that hidden image can be the information such as any figure, word, symbol or LOGO, and by the fractal contour patterns A generating in step 1 through a series of deformation, obtain another after rearranging etc. and treat hidden image (as shown in 2-2 in Fig. 1), and treat that according to this relevant parameter of hidden image makes corresponding lenticular lenses I;

Step 4, a color separation file in four color separation files that obtain in selecting step three is as false proof mother matrix, set forth for convenience the present invention, here select cyan color separation file (as shown in 1-green grass or young crops in Fig. 1) as false proof mother matrix, be hidden in the diverse location of selected color separation file by phase place adjustment (as shown in Fig. 1 3) by processing the hidden image (as 2-1 in Fig. 1, shown in 2-2) for the treatment of obtaining in step 3;

Step 5, carries the color separation file hiding Info together with other three the color separation Piece file mergences of not hiding anti-counterfeiting information (as shown in Fig. 1 4) by what obtain in step 4, forms new colored fractal pattern (as shown in Fig. 1 5);

Step 6, is applied to the new colored fractal pattern (as shown in Fig. 1 5) obtaining in step 5 in product false proof design;

Step 7, realizes at stock (paper, cardboard, plastic sheeting, tinplate etc.) above by normal mode of printing (offset lithography, flexographic printing, intaglio printing, serigraphy, digital printing), is processed into formal product;

Step 8, use lenticular lenses I(as shown in 6-I in Fig. 1) and lenticular lenses II(as shown in 6-II in Fig. 1) check the antifalse effect of product, thereby demonstrate the five-pointed star (as shown in 7-1 in Fig. 1) and the fractal contour patterns (as shown in 7-2 in Fig. 1) that are hidden in image, and then reach the object of checking authenticity of products.

These are only preferred embodiment of the present invention and with, not with restriction the present invention, all any modifications of doing within the spirit and principles in the present invention, are equal to and replace and improvement etc., within all should being included in protection scope of the present invention.

Claims

1. the grating method for anti-counterfeit based on fractal, it is characterized in that at the upper product that carries the dual fractal anti-counterfeiting image of colour hiding Info that obtains by common printed mode (offset lithography, flexographic printing, intaglio printing, serigraphy, digital printing) of stock (paper, cardboard, plastic sheeting, tinplate etc.), and need to corresponding two lenticular lenses verify the dual antifalse effect hiding Info in product;

2. dual hiding Info as claimed in claim 1, it is characterized in that first, heavily to hide Info be the halftoning moir Lou Lou patterns information being formed by word, figure, mark etc., and second heavily hides Info is the linear moir Lou Lou patterns information that carries the fractal contour patterns of being drawn by the program of independently writing.