CN101082957B - Halftone screen encoded certificate false proof processing method - Google Patents
Halftone screen encoded certificate false proof processing method Download PDFInfo
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- CN101082957B CN101082957B CN200610013990A CN200610013990A CN101082957B CN 101082957 B CN101082957 B CN 101082957B CN 200610013990 A CN200610013990 A CN 200610013990A CN 200610013990 A CN200610013990 A CN 200610013990A CN 101082957 B CN101082957 B CN 101082957B
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Abstract
The invention discloses a false proof processing method of gauze screen coded certification in the information processing domain, which is composed of gauze screen coded certification false proof embedding system and gauze screen coded certification false proof identifying system, wherein the gauze screen coded certification false proof embedding system buries the certification content code and acoustic code into the background out of the certification content; the gauze screen coded certification false proof identifying system judges the legal property of the certification according to the buried information in the certification, which makes illegal person not change the content of certification surface through paper dielectric information processing equipment due to burying acoustic code. The invention solves the fabricating and changing problem of certification effectively because the buried information in the certification can't be modified, which can be applied in the certification false proof information safety domain widely.
Description
Technical field
The invention belongs to field of information processing, especially a kind of halftone screen encoded certificate false proof processing method.
Background technology
In this year, along with the technology of paper medium information treatment facility (as equipment such as printer, duplicating machine, integral machine, scanners) constantly develops, its printing or scanning resolution are more and more higher.Use equipment such as printer, duplicating machine, all-in-one can certificate be printed or duplicate, its effect can reach the effect of mixing the spurious with the genuine fully, and by scanner certificate is scanned up to and forms data image in the computing machine, utilize image processing software in the computing machine to make amendment and reach the purpose of distorting, so the said equipment is used for certificate is forged or distorted to reach its illegal objective by lawless people sometimes this image.How certificate is carried out the false proof problem that presses for solution that is treated as.
At present, the state-of-the-art technology of handling for certificate false proof is to adopt the technology of the information of imbedding on certificate to realize, existing information embedded mode main method is exactly: the information that will imbed is 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 directly superpose by information and the original information that this pixel is formed, or adopt with the fine difference information of carrying out of the pixel of different sizes at gray-scale value different in the image and to imbed, because the small variation of geometric shape is difficult to identification, even reference point need be set or imbed information repeatedly, therefore cause and imbed inefficiency, imbed problems such as capacity is little.
Adopting the above-mentioned method of imbedding mainly is that information and the original information that will imbed directly superposes, cause the information imbedded destruction to the certificate content, the hidden danger that in certificate identification, has mistake identification, more since its to imbed capacity little, the bulk information of certificate content information or other provable certificate legitimacies can not be embedded in the certificate, still there is the problem that is cracked in its information of imbedding, thereby does not fundamentally solve the problem that certificate is forged, is distorted.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, propose a kind of do not destroy former certificate content and can prove the certificate content code of certificate legitimacy and background that the sound code all is embedded to the certificate content on halftone screen encoded certificate false proof processing method.
The present invention solves its technical matters and takes following technical scheme to realize:
A kind of halftone screen encoded certificate false proof processing method, it is characterized in that: imbed method and the halftone screen encoded certificate false proof recognition methods is formed by halftone screen encoded certificate false proof, the screen coding anti-counterfeiting certificate is imbedded method certificate content code and sound code all is embedded in the background outside the certificate content, the halftone screen encoded certificate false proof recognition methods is imbedded the legitimacy that information is judged certificate by the identification additional clause, wherein, halftone screen encoded certificate false proof is imbedded method and is comprised the steps:
(1) input certificate content and generate view data and the certificate content code;
(2) receive the sound-content line data compression of going forward side by side, generate the sound code;
(3) be the half-tone screen code data with certificate content code and sound code conversion;
(4) reads image data information and carry out pixel analysis, judging whether this pixel is blank pixel, is that replace the site of then carrying out half-tone screen code, carries out imbedding of half-tone screen code data, otherwise continue to carry out this step, circular treatment is until all being embedded to the half-tone screen code data in the certificate image;
(5) certificate image that will imbed half-tone screen code is printed by print engine;
The halftone screen encoded certificate false proof recognition methods comprises the steps:
(1) certificate image that receives scanister scanning is also preserved;
(2) reading the certificate image pixel discerns half-tone screen code and the half-tone screen code that identifies is converted to certificate content code and sound code;
(3) certificate content and certificate content code are analyzed and the sound code is discerned, differentiate the true and false of certificate;
(4) analysis result is shown or printout.
And the certificate content code is the computer code that comprises literal, form, mark and image.
Description of drawings
Fig. 1 is that halftone screen encoded certificate false proof is imbedded process flow diagram;
Fig. 2 is halftone screen encoded certificate false proof identification process figure;
Fig. 3 is that halftone screen encoded certificate false proof is imbedded the information flow block diagram;
Fig. 4 is a halftone screen encoded certificate false proof identifying information stream block diagram;
Fig. 5 is a certificate design sketch of having imbedded half-tone screen code.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the invention is further described.
The present invention with reference to the patent of the half-tone screen code control method of a large amount of record data " can be on the paper " (application number: 200410020318.2), the notion of half-tone screen code is described:
The half-tone screen code definition: a kind of form that has at least in image, literal, mark, the background form is printed on the recording medium, has more than one pixel at least in its printing content in the media, replace the site of being arranged according to the physical form that comprises geometry, but this site logger computer information, this site according to the physical form logger computer information that comprises geometry is arranged and is defined as half-tone screen code.The most frequently used a kind of form of half-tone screen code with frequency-modulation halftone dot as message code 0, the amplitude modulation site is as message code 1, frequency-modulation halftone dot also can be described as and disperses site, amplitude modulation site also to can be described as the set site, realizes computer code to be embedded on the print media by printing with this.
Can represent by computer code as information such as literal, form, mark and images, even sound can carry out digitizing, also can be transformed into computer code, therefore comprise that contents such as literal, form, mark, image and sound can be represented that all the arrangement of numerous half-tone screen codes can constitute printable image by half-tone screen code.
The process of halftone screen encoded certificate false proof processing method is described below in conjunction with Fig. 1 and Fig. 2:
Halftone screen encoded certificate false proof processing method, comprise that halftone screen encoded certificate false proof imbeds method and halftone screen encoded certificate false proof recognition methods, this disposal route is imbedded in system and the halftone screen encoded certificate false proof recognition system at halftone screen encoded certificate false proof and is realized, halftone screen encoded certificate false proof is imbedded system certificate content code and sound code all is embedded in the background outside the certificate content, and the halftone screen encoded certificate false proof recognition system is imbedded the legitimacy that information is judged certificate by the identification additional clause.
Halftone screen encoded certificate false proof is imbedded system and is formed by being installed in certificate receiving processing module in the computing machine, certificate image processing module, half-tone screen code modular converter, the synthetic processing module of information, printout processing module, by realizing main frame and cooperating of equipment such as keyboard, display, acoustic input dephonoprojectoscope, printer that certificate content code and sound code all are embedded to function in the background outside the certificate content.
Wherein, the certificate content code is the computer code that comprises sound, literal, form, mark and image, and at least a above form in its literal, form, mark and the image and sound code can imbedded simultaneously.
It is as follows that halftone screen encoded certificate false proof is imbedded process:
(1) the certificate receiving processing module receives the certificate content of wanting accreditation, generates the certificate content code, and is kept at corresponding data field;
(2) the certificate receiving processing module according to the requirement of accreditation generate the certificate image data with and be kept at corresponding data field;
(3) the certificate receiving processing module receives the sound-content that will imbed, and by the A/D conversion equipment simulated data is converted to numerical data and carries out data compression simultaneously, generates the sound code;
(4) the half-tone screen code modular converter will be the half-tone screen code data by the certificate content code of step 1 generation and by the code conversion of step 3 generation sound, and be kept at corresponding data field;
(5) the certificate image processing module reads a pixel from the view data that step 2 generates, carry out the gray-scale value analysis, and judge that this pixel is a blank pixel? be then to enter step 6, otherwise continue to carry out this step;
(6) the synthetic processing module of information is carried out the replacement of half-tone screen code to this pixel, realizes the information of half-tone screen code data is imbedded;
(7) the synthetic processing module of information judges whether the half-tone screen code data that will imbed are all imbedded, and are then to enter step 8, continues to handle otherwise go to step 5;
(8) the synthetic processing module of information will be finished the view data that data are replaced, and promptly imbed the view data of certificate content code and sound code and will have preserved, and deliver to the printout processing module;
(9) printout processing module is synthetic data, and promptly certificate image is sent to print engine and prints.
Judge in step 5 in the said process that pixel for empty method is: a pixel is as the criterion by 16 dot matrix, is a blank pixel if gray-scale value, is then judged this pixel less than 4.
By above-mentioned processing procedure, certificate content code and sound code can be embedded in the background outside the certificate content on the certificate.
Halftone screen encoded certificate false proof is imbedded process and also can be represented as the information flow chart that Fig. 3 represents:
The information flow that halftone screen encoded certificate false proof is imbedded process mainly be the certificate content code of information B guiding, certificate image that the sound code leads with information A through half-tone screen code conversion back by screen coding embedded processing after, certificate image and certificate content code, synthetic the converting to of sound code had the certificate image of imbedding certificate false proof information, by the process of print engine output information C.
To have the screen coding embedded of certificate content code and sound code and arrive actual effect of additional clause as shown in Figure 5, the stain in the background is the screen site of certificate content code and sound code.
The halftone screen encoded certificate false proof recognition system by be installed in certificate scanning load module in the computing machine, half-tone screen code identification module, certificate content analysis module and as a result output module forms, by cooperating of main frame and equipment such as keyboard, scanning input device, display, voice output, printer judging the function of certificate legitimacy by discerning certificate content code and sound code in the certificate.
The halftone screen encoded certificate false proof identifying is as follows:
(1) certificate scanning load module receives the certificate image of scanning and preserves corresponding data field;
(2) the half-tone screen code identification module reads the certificate image pixel and carries out half-tone screen code identification, is judgement a half-tone screen code? be then to go to step 3 to handle, otherwise continue to carry out this step;
(3) the half-tone screen code identification module is saved to corresponding data field with the half-tone screen code that identifies, and judges whether certificate image all finishes dealing with, and is then to go to step 4 to handle, and continues to handle otherwise go to step 2;
(4) the certificate content analysis module is converted to certificate content code and sound code with the half-tone screen code that step 3 generates;
(5) the certificate content analysis module is analyzed certificate image and certificate content code and the sound code is discerned, and differentiates the true and false of certificate;
(6) output module shows or printout analysis result as a result.
The halftone screen encoded certificate false proof identifying also can be represented as the information flow chart that Fig. 4 represents:
The information flow of halftone screen encoded certificate false proof identifying mainly is that the certificate image that scanning generates is discerned through half-tone screen code, this certificate image is exported as former certificate image and comprises the information of imbedding two parts of certificate content code, sound code, to certificate image and the certificate content code is analyzed and the sound code discerned the process of judging the certificate true and false.
Advantage of the present invention and good effect are:
The present invention all is embedded to certificate content code and sound code on the certificate in the background outside the certificate content, certificate image is not produced any destroying infection, when identification, has higher discrimination, simultaneously owing in certificate, imbedded certificate content code and sound code, even unauthorized person uses some paper medium information treatment facilities that the content of document surface is distorted or forged, but imbedding the additional clause true content can not revise, especially sound is not easy to be tampered especially, therefore, in order to identify the certificate true and false or no being tampered, only need the halftone screen encoded certificate false proof recognition system that the information of imbedding on the certificate is identified, read certificate content code and sound code in the information of imbedding, can determine the true and false or no being tampered of certificate. Forge the problem of distorting by adopting this method can effectively solve certificate, can be widely used for the certificate information security fields, this development in science and technology for the certificate false proof information security field is significant.
Claims (2)
1. halftone screen encoded certificate false proof processing method, it is characterized in that: imbed method and the halftone screen encoded certificate false proof recognition methods is formed by halftone screen encoded certificate false proof, the screen coding anti-counterfeiting certificate is imbedded method certificate content code and sound code all is embedded in the background outside the certificate content, the halftone screen encoded certificate false proof recognition methods is imbedded the legitimacy that information is judged certificate by the identification additional clause, wherein, halftone screen encoded certificate false proof is imbedded method and is comprised the steps:
(1) input certificate content and generate view data and the certificate content code;
(2) receive the sound-content line data compression of going forward side by side, generate the sound code;
(3) be the half-tone screen code data with certificate content code and sound code conversion;
(4) reads image data information and carry out pixel analysis, judging whether this pixel is blank pixel, is that replace the site of then carrying out half-tone screen code, carries out imbedding of half-tone screen code data, otherwise continue to carry out this step, circular treatment is until all being embedded to the half-tone screen code data in the certificate image;
(5) certificate image that will imbed half-tone screen code is printed by print engine;
The halftone screen encoded certificate false proof recognition methods comprises the steps:
(1) certificate image that receives scanister scanning is also preserved;
(2) reading the certificate image pixel discerns half-tone screen code and the half-tone screen code that identifies is converted to certificate content code and sound code;
(3) certificate content and certificate content code are analyzed and the sound code is discerned, differentiate the true and false of certificate;
(4) analysis result is shown or printout.
2. halftone screen encoded certificate false proof processing method according to claim 1 is characterized in that: the certificate content code is the computer code that comprises literal, form, mark and image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610013990A CN101082957B (en) | 2006-06-01 | 2006-06-01 | Halftone screen encoded certificate false proof processing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610013990A CN101082957B (en) | 2006-06-01 | 2006-06-01 | Halftone screen encoded certificate false proof processing method |
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| CN101082957A CN101082957A (en) | 2007-12-05 |
| CN101082957B true CN101082957B (en) | 2010-05-12 |
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| CN200610013990A Expired - Fee Related CN101082957B (en) | 2006-06-01 | 2006-06-01 | Halftone screen encoded certificate false proof processing method |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102673220A (en) * | 2008-05-27 | 2012-09-19 | 北京华旗资讯数码科技有限公司 | Anti-counterfeiting certificate capable of distinguishing truth and falsity through checking micro image codes and verification codes |
| CN102673221A (en) * | 2008-05-27 | 2012-09-19 | 北京华旗资讯数码科技有限公司 | Miniature image code printed on surface of anti-counterfeiting certificate for representing article to be inspected |
| CN104717441A (en) * | 2014-12-30 | 2015-06-17 | 上海孩子国科教设备有限公司 | Method and system for loading voices in image data |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6526155B1 (en) * | 1999-11-24 | 2003-02-25 | Xerox Corporation | Systems and methods for producing visible watermarks by halftoning |
| CN1424690A (en) * | 2003-01-20 | 2003-06-18 | 天津市阿波罗信息技术有限公司 | Network screen encoded anti-fakery method |
| CN1598873A (en) * | 2004-08-17 | 2005-03-23 | 顾泽苍 | Network screen coding control method capable of recording mass data on paper |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6526155B1 (en) * | 1999-11-24 | 2003-02-25 | Xerox Corporation | Systems and methods for producing visible watermarks by halftoning |
| CN1424690A (en) * | 2003-01-20 | 2003-06-18 | 天津市阿波罗信息技术有限公司 | Network screen encoded anti-fakery method |
| CN1598873A (en) * | 2004-08-17 | 2005-03-23 | 顾泽苍 | Network screen coding control method capable of recording mass data on paper |
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