CN100590652C - Paper medium original copy script and copy anti-fake processing method - Google Patents
Paper medium original copy script and copy anti-fake processing method Download PDFInfo
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- CN100590652C CN100590652C CN200610014703A CN200610014703A CN100590652C CN 100590652 C CN100590652 C CN 100590652C CN 200610014703 A CN200610014703 A CN 200610014703A CN 200610014703 A CN200610014703 A CN 200610014703A CN 100590652 C CN100590652 C CN 100590652C
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Abstract
This anti-false method (AM) consists of: (1) the method to embed info into the paper medium, (2) the method to recognize the info embedded in the paper medium original (PMO) and its copies. The special point is that: The method to embed info into the paper medium (1) converts the anti-false info into the net screen codes (NSC); then (2) embeds them into the shading picture (SP) and (3) prints PMO.Here, SP consists of the shading pattern, the floating words and the file info. Thus the method to recognize the info embedded in the paper medium original and its copy (1) scans the paper medium; (2) recognizes the embedding NSC according to the scanning picture info head; (3) converts NSC into the computer data and (4) judges its true/ false. This invention completes AM of PMO and its copy on the common paper to save cost and reduce the using fare. It solves the anti-false problems not only on PMO, but also on its copies. This ensures the using of copies more safe and reliable.
Description
Technical field
The invention belongs to field of information processing, the anti-fake processing method of especially a kind of paper medium original and copy.
Background technology
Along with the technology of duplicating machine, printer, scanner etc. constantly develops, its printing or scanning resolution are more and more higher, use the said equipment can paper medium file be printed or duplicate, and its effect can reach the effect of mixing the spurious with the genuine fully; And by scanner paper medium file is scanned up to and forms data image in the computing machine, utilize image processing software in the computing machine that this image is made amendment to become possibility to reach the purpose of distorting.
Nowadays, the use of paper medium file more and more widely, not only the original paper as paper medium files such as certificate, certificates often is used, and the copy of various paper medium files is used especially in a large number.When doing examination, often require to provide the copy of various testimonial materials as relevant department, above-mentioned various paper medium files are easy to be forged or distort, and especially the modification to copy is more easy.Therefore, how to paper medium file carry out false proof, especially the copy to paper medium file carries out to be the big problem of pendulum in current society, to be necessary further to improve the false proof level of paper medium file and copy file false proof.
Carry out false proof to the paper medium file original paper, traditional method mainly is to adopt anti-duplicate special-purpose paper or ink special, use this anti-documentation of duplicating paper or ink special printing to duplicate and to lose efficacy, prevent bootlegging or the purpose of distorting thereby reach.But this disposal route need be used the paper or the anti-forgery ink of special material, problem such as therefore have processing cost height, popularization difference and cost an arm and a leg.Up-to-date anti-counterfeiting technology mainly is some characteristic informations to be embedded on the paper medium file in some way to realize in paper medium file, as the characteristic information that will imbed with the certain geometric shape such as the shape of pixel, the position, the difference of forms such as size is represented message code " 1 " or " 0 ", to superpose by information and the original information that this pixel is formed, at the file hiding that prints characteristic information, these characteristic informations are that being not easy of hiding revised, and through duplicating or scanning after can cause losing that feature hides Info, thereby reach false proof purpose, this method of imbedding information has solved to a certain extent prevents pseudo problem to paper medium original.This method mainly is that paper medium original is carried out false proof processing, in the false proof processing of paper medium duplicating machine, a subject matter that exists is: in to paper medium file duplicating process, some information in the paper medium original can cause in copy loses, thereby can not guarantee information integrity and accuracy in the copy, thereby also just can not judge its authenticity according to the information in the copy.Also do not find effective solution and how copy is carried out false proof processing.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, propose a kind of common paper of using and promptly the anti-counterfeiting information of proof paper medium file legitimacy can be embedded in the paper medium file content, to realize anti-fake processing method to paper medium original and copy.
The present invention solves its technical matters and takes following technical scheme to realize:
The anti-fake processing method of a kind of paper medium original and copy is included in the recognition methods of the method for imbedding and the paper medium original and the information that copy is imbedded of information in the paper medium, it is characterized in that:
In the paper medium information to imbed method step as follows:
(1) according to embedded mode the pattern of shading and the content production of floating word are comprised that the band burelage reaches the shading image of floating word content;
(2) read former document image, former document image is synthesized on shading image, produce and generate the shading image of band document content;
(3) read the anti-counterfeiting information that to imbed, and convert this anti-counterfeiting information to half-tone screen code;
(4) read the shading image of being with document content, with screen coding embedded appointed area to the anti-counterfeiting information that will imbed, if that is: the screen site value that will imbed this moment is " 1 ", then keep former pixel content, if the screen site value that will imbed this moment is " 0 ", then use the screen site of representative " 0 " to replace this pixel, repeat this step and all imbed until all screen sites;
(5) image of the anti-counterfeiting information that will imbed comes out by printer prints;
The recognition methods step of paper medium original and information that copy is imbedded is as follows:
(1) scanning paper medium original or copy generate scan image, and read in internal memory;
(2) read a pixel from internal memory, whether identification is the site of half-tone screen code, if deposit the half-tone screen code district in; This step is carried out in circulation, finishes until the whole processing of all pixels of scan image;
(3) half-tone screen code with the half-tone screen code district is converted to computer data;
(4) recognition result is exported.
And described embedded mode comprises embedded mode or the outer embedded mode of floating word in the floating word.
And described screen site comprises that the expression code is the dispersion site of " 0 " for the concentrated site and the expression code of " 1 ".
And the site in the appointed area of the anti-counterfeiting information that will imbed in the described shading image is for concentrating the site.
And described shading image is to use the background site to make burelage, concentrates the site to make the form of floating word.
And described shading image also is to use the form of concentrating the site to make burelage, the floating word of background site making.
And the shading image of described band document content is that former document image is directly overlayed on the shading image.
And the described anti-counterfeiting information content of imbedding comprises in file content, trace information, enciphered message, the secret writing information one or more.
And described trace information comprises one or more in time-write interval, printing person, the printer model.
Description of drawings
Fig. 1 be in the paper medium information imbed method flow diagram;
Fig. 2 is the recognition methods process flow diagram of paper medium original and information that copy is imbedded;
Fig. 3 is the diagram of background site;
Fig. 4 concentrates site and the diagram of disperseing the site;
Fig. 5 is the pattern of the former document image of paper medium;
Fig. 6 is that floating word content is the pattern of the shading image of background site for concentrating site, burelage;
Fig. 7 is that floating word content is that background site, burelage are the pattern of concentrating the shading image of site;
Fig. 8 is the pattern that adds the shading image of former document image in Fig. 6;
Fig. 9 is the pattern that adds the shading image of former document image in Fig. 7;
Figure 10 is a design sketch of imbedding anti-counterfeiting information in Fig. 8;
Figure 11 is a design sketch of imbedding anti-counterfeiting information in Fig. 9;
Figure 12 is the photocopying effect figure of Figure 10;
Figure 13 is Figure 11 photocopying effect figure.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the invention is further described, but embodiment of the present invention is illustrative, rather than determinate.
Pixel described in the present invention is the least unit of composing images, and the site is the pairing screen least unit of pixel with the least unit of composing images, and the site is by forming, and half-tone screen code is made up of the site.
Fig. 3 be present embodiment employed be the background site, can form burelage or form floating word by it.
Fig. 4 is employed concentrated site of present embodiment and the example that disperses the site, and what Fig. 4 (a) represented is to concentrate the site, and what Fig. 4 (b) represented is to disperse the site.The so-called site of concentrating is meant that all dot matrix in each site combine, and the so-called site that disperses is meant that the dot matrix in the site has at least a point to separate, and wherein, " 1 " can be represented in concentrated site, disperses the site can represent " 0 ".
In fact not only have only background site, the concentrated site of above-mentioned a kind of form and disperse the site, all site forms of forming according to similar type all belong in the scope of the present invention.
Narrate the process of the anti-fake processing method of paper medium original and copy below in conjunction with Fig. 1 and Fig. 2:
The anti-fake processing method of paper medium original and copy, form by screen coding embedded system and half-tone screen code recognition system, wherein screen coding embedded system is implemented in the method for imbedding of information in the paper medium, and the half-tone screen code recognition system realizes the recognition methods of paper medium original and information that copy is imbedded.
Screen coding embedded system is installed in the computing machine, by can realizing main frame and cooperating of equipment such as keyboard, display, printer, scanner making the shading image of the band document content that burelage, floating word and former document image are synthesized together, and can be implemented in the anti-counterfeiting information that will comprise file content, trace information (comprise time-write interval, printing person, printer model number), enciphered message, secret writing information in the shading image of band document content and be embedded in the appointed area of the anti-counterfeiting information that will imbed with the form of half-tone screen code.When screen coding embedded, above-mentioned anti-counterfeiting information can be embedded in the zone in the floating word of shading image, above-mentioned anti-counterfeiting information can also be embedded in the outer zone of floating word in the shading image.
The method of imbedding of anti-counterfeiting information in the paper medium, its process is as follows:
(1) parameter imbed is set: the form of content of the mode of imbedding (imbed in the floating word, floating word imbed), floating word (COPY, duplicate etc.) and pattern etc. outward.
(2) make the shading image comprise band burelage and floating word content, calculating will be imbedded the position of anti-counterfeiting information, and embedded mode and the position that will imbed anti-counterfeiting information is left in the appointed area of shading image as information header.This step is according to complete two types shading image of the mode imbedded, and a kind of being to use concentrated the site to generate floating word content, used the background site to generate the form of burelage, and this shading image is used for imbedding the mode of half-tone screen code in floating word; Another kind of mode is to use the background site to generate floating word content, uses the form of concentrating the site to generate burelage, and this shading image is used for imbedding the mode of half-tone screen code outside floating word.In case the shading image of this step that completes, the position of its concentrated site is fixed, because what be that this method adopts is to imbed half-tone screen code in the position of concentrating the site, say that therefore the position of the information of can imbedding fixes, can calculate and will imbed the position that anti-counterfeiting information is imbedded.
(3) read former document image, and former document image is synthesized on the shading image that generates in step 2, produce and generate the shading image of band document content, this step is that former document image is directly overlayed on the shading image.
(4) read the anti-counterfeiting information that to imbed, and this information translation is become half-tone screen code.
(5) will read in internal memory with the shading image of document content.
(6) read the half-tone screen code that to imbed, if this screen site value is 1, it is constant that then the pixel in the internal memory keeps content, if this screen site value is " 0 ", then use the screen site of representative " 0 " to replace this pixel, present embodiment uses and disperses the site to replace this pixel.
(7) judge whether whole half-tone screen codes are all imbedded, and are then to enter step 8, continue to imbed half-tone screen code otherwise go to step 6 circulation.
(8) image with imbedding anti-counterfeiting information comes out by printer prints.
5-12 is described further said process below in conjunction with accompanying drawing: Fig. 5 is the pattern of the former document that does not comprise burelage and floating word imbedded of the information of carrying out thereon.
Fig. 6 and Fig. 7 are that the two kinds of shading image that comprises burelage and floating word content: Fig. 6 are that floating word content uses concentrated site, burelage to use the shading image of background site; Fig. 7 is that floating word content uses background site, burelage to use the shading image of concentrating the site; Wherein a plurality of floating word (COPY) and the shading on the shading mixes, and carefully do not see the COPY printed words that are difficult to find out wherein.
Fig. 8 and Fig. 9 are that the shading image of two kinds of band document contents: Fig. 8 is at the shading image that covers the band document content that generates behind the former document image on the shading image shown in Figure 6; Fig. 9 is that wherein a plurality of floating word (COPY) and the shading on the shading mixes, and carefully do not see the COPY printed words that are difficult to find out wherein at the shading image that covers the band document content that generates behind the former document image on the shading image shown in Fig. 7.
The two kinds of design sketch of imbedding anti-counterfeiting information: Figure 10 of Figure 10 and Figure 11 are design sketchs of imbedding anti-counterfeiting information on the shading image of band document content shown in Figure 8, promptly imbed the design sketch of anti-counterfeiting information in floating word; Figure 11 is a design sketch of imbedding anti-counterfeiting information on the shading image of band document content shown in Figure 9, promptly imbeds the design sketch of anti-counterfeiting information outside floating word.Figure 10 and Figure 11 just will imbed anti-counterfeiting information is embedded to the shading of band document content with the form of half-tone screen code paper medium original, because it is minimum to the original image destructiveness to adopt this method to imbed anti-counterfeiting information, therefore make and with the naked eye be difficult to find out Figure 10 and Fig. 8, the difference of Figure 11 and Fig. 9
Figure 12 is that Figure 10 uses the design sketch after duplicating machine duplicates, because the anti-counterfeiting information of imbedding in the floating territory, block has adopted concentrated site and has disperseed the site, it is different with the size and the shape of background site in the shading zone, duplicating machine advances the sampling ability in two zones different, therefore when Figure 10 duplicates on duplicating machine, and most of pixel in floating territory, block is retained, and the most of Pixel Information in the background site in the shading zone is lost, and presents thereby will float word (COPY).
Figure 13 is that Figure 11 uses the design sketch after duplicating machine duplicates, because it is different having adopted the background site and adopted concentrated site and disperse the size and the shape of site with the anti-counterfeiting information of imbedding in the shading zone in the floating territory, block, it is different that duplicating machine advances the ability that two zones are adopted, therefore when Figure 11 duplicates on duplicating machine, and most of pixel of the background site in the floating territory, block is lost, and the most of pixel in the shading zone is retained, and presents in the mode of emptying thereby will float word (COPY).
Be retained though it should be noted that the half-tone screen code major part of imbedding, a part is also lost in the dispersion site in the half-tone screen code.This also is that other employing information are imbedded method and caused the problem place of duplicating back information dropout and can not guarantee information completely in the copy.In the present invention, although can occur the phenomenon that decentralized network in the half-tone screen code is pointed out active after duplicating, but the concentrated site in the half-tone screen code but can not lost, and, because information header has write down the information embedded mode and the position of the anti-counterfeiting information imbedded, the site of reading in imbedding the zone all can be considered and disperses the site if not concentrated site.In this way, not only on the paper medium original that prints, imbed anti-counterfeiting information, and on copy, also kept the anti-counterfeiting information of imbedding in the paper medium original, guaranteed information integrity and accuracy in the copy effectively.The difference of paper medium original and copy is: the floating word information in the copy can be shown significantly, and the floating word information in the original paper is mixed in the burelage, is difficult to be found.
The half-tone screen code recognition system is installed in the computing machine, can discern the half-tone screen code in paper medium original and the copy cooperating of equipment with keyboard, display, printer, scanner etc. by main frame.
The recognition methods step of paper medium original and information that copy is imbedded is as follows:
(1) scanning paper medium original or copy generate scan image, and read in internal memory.
(2) read the data of scan image information header specified region, does differentiating have half-tone screen code? have then to enter step 3, otherwise think that this image does not contain half-tone screen code information, enters step 10.
(3) read a pixel from internal memory, whether this pixel of position judgment of the anti-counterfeiting information that comprises according to information header imbeds the zone at anti-counterfeiting information, is that the site value of then this pixel being represented deposits the half-tone screen code district in, otherwise enters step 4.In this step, if the site of this pixel of taking out is for concentrating the site, then this site value is " 1 ", if the site of this pixel of taking out is for disperseing the site, then this site value is " 0 ", if the site of this pixel of taking out is a blank spot, then the paper medium file of explanation scanning is a copy, and also the value with this site is considered as " 0 ".
(4) non-anti-counterfeiting information is imbedded the processing of area pixel: judge that this pixel is the background site? be then this pixel to be bleached to filter, enter step 7, otherwise enter step 6.
(6) non-anti-counterfeiting information is imbedded the processing of area pixel: other pixels remain unchanged.
(7) all pixels of judging scan image whether processing finish, be then to enter step 8, otherwise go to step 3 circular treatment.
(8) half-tone screen code with the half-tone screen code district is converted to computer data.
(9) aforementioned calculation machine data and scan image are compared, judge the authenticity of file.
(10) recognition result is exported.
The measure that above-mentioned identifying is taked based on the method for imbedding of anti-counterfeiting information in the paper medium, the half-tone screen code of imbedding in can paper medium original identifies, also can with the half-tone screen code information imbedded in the copy by said method with its information completely identify, and differentiate its true and false.
Advantageous effect of the present invention is:
1. the present invention adopts and can prove that the anti-counterfeiting information of paper medium file legitimacy is with half-tone screen code information Be embedded on the paper medium, be embedded in the anti-counterfeiting information in the paper medium owing to can not be modified, therefore can be very Avoid well being tampered and forging of original paper; Adopt simultaneously this method also so that can keep paper on the copy The anti-counterfeiting information of imbedding in the medium original guarantees information integrity and accuracy in the copy effectively, Half-tone screen code information in the same copy can not be modified, and avoided copy to be tampered and forges Problem.
2. the present invention can arrange neatly the content of the mode imbedded, floating word and imbed the pattern of pattern, Therefore Method of printing is simple, easy to use.
3. the present invention uses common paper can realize that paper medium original and copy are false proof, has avoided using specially Therefore some drawbacks that paper using or ink special exist have saved cost greatly, have reduced cost of use.
4. print with the paper medium original of imbedding anti-counterfeiting information, in the copy that duplicates Floating word information shows significantly, therefore can clearly distinguish original paper and copy.
5. the present invention has effectively solved paper medium copy and has been tampered and the problem of forging, so that the paper medium The authenticity of copy is guaranteed, and can be more widely used for paper medium copy.
Claims (9)
1. the anti-fake processing method of paper medium original and copy is included in the recognition methods of the method for imbedding and the paper medium original and the information that copy is imbedded of information in the paper medium, it is characterized in that:
In the paper medium information to imbed method step as follows:
(1) according to embedded mode the pattern of shading and the content production of floating word are comprised that the band burelage reaches the shading image of floating word content;
(2) read former document image, former document image is synthesized on shading image, produce and generate the shading image of band document content;
(3) read the anti-counterfeiting information that to imbed, and convert this anti-counterfeiting information to half-tone screen code;
(4) read the shading image of being with document content, with screen coding embedded appointed area to the anti-counterfeiting information that will imbed, if that is: the screen site value that will imbed this moment is " 1 ", then keep former pixel content, if the screen site value that will imbed this moment is " 0 ", then use the screen site of representative " 0 " to replace this pixel, repeat this step and all imbed until all screen sites;
(5) image of the anti-counterfeiting information that will imbed comes out by printer prints;
The recognition methods step of paper medium original and information that copy is imbedded is as follows:
(1) scanning paper medium original or copy generate scan image, and read in internal memory;
(2) read a pixel from internal memory, whether identification is the site of half-tone screen code, if deposit the half-tone screen code district in; This step is carried out in circulation, finishes until the whole processing of all pixels of scan image;
(3) half-tone screen code with the half-tone screen code district is converted to computer data;
(4) recognition result is exported.
2. the anti-fake processing method of paper medium original according to claim 1 and copy is characterized in that: described embedded mode comprises embedded mode or the outer embedded mode of floating word in the floating word.
3. the anti-fake processing method of paper medium original according to claim 1 and copy is characterized in that: described screen site comprises that the expression code is the dispersion site of " 0 " for the concentrated site and the expression code of " 1 ".
4. the anti-fake processing method of paper medium original according to claim 1 and copy is characterized in that: the site in the appointed area of the anti-counterfeiting information that will imbed in the described shading image is for concentrating the site.
5. according to the anti-fake processing method of claim 1 or 4 described paper medium originals and copy, it is characterized in that: described shading image is to use the background site to make burelage, concentrates the site to make the form of floating word.
6. according to the anti-fake processing method of claim 1 or 4 described paper medium originals and copy, it is characterized in that: described shading image also is to use the form of concentrating the site to make burelage, the floating word of background site making.
7. the anti-fake processing method of paper medium original according to claim 1 and copy is characterized in that: the shading image of described band document content is that former document image is directly overlayed on the shading image.
8. the anti-fake processing method of paper medium original according to claim 1 and copy is characterized in that: the described anti-counterfeiting information content of imbedding comprises in file content, trace information, enciphered message, the secret writing information one or more.
9. the anti-fake processing method of paper medium original according to claim 8 and copy is characterized in that: described trace information comprises one or more in time-write interval, printing person, the printer model.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200610014703A CN100590652C (en) | 2006-07-04 | 2006-07-04 | Paper medium original copy script and copy anti-fake processing method |
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| CN200610014703A CN100590652C (en) | 2006-07-04 | 2006-07-04 | Paper medium original copy script and copy anti-fake processing method |
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| CN100590652C true CN100590652C (en) | 2010-02-17 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2010206433A (en) * | 2009-03-03 | 2010-09-16 | Zecang Gu | Information embedding device, information recognition device, information embedding method, information recognition method, information embedding program, information recognition program, and information embedding printing medium |
| CN103312914B (en) * | 2012-03-14 | 2019-04-23 | 天津阿波罗电子有限公司 | A kind of implementation method for forbidding copy function |
| CN103778454A (en) * | 2014-02-27 | 2014-05-07 | 深圳市法兰文化产业有限公司 | Anti-fake identification method of color images |
| CN105488500A (en) * | 2014-09-15 | 2016-04-13 | 天津市阿波罗信息技术有限公司 | Formation method of novel network taxation system |
| CN104573647B (en) * | 2014-12-30 | 2018-08-03 | 恒鸿达科技有限公司 | A kind of recognition methods of illegal identity certificate and device |
| CN111124318B (en) * | 2018-10-31 | 2024-04-30 | 株式会社理光 | Print file processing apparatus and print file processing method |
| CN111767011A (en) * | 2020-06-29 | 2020-10-13 | 袁迦萱 | Password printing method, tracing method and system based on black and white printing file |
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