CN103024245A - System and method for tracing sources of printed paper documents - Google Patents
System and method for tracing sources of printed paper documents Download PDFInfo
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- CN103024245A CN103024245A CN 201210585854 CN201210585854A CN103024245A CN 103024245 A CN103024245 A CN 103024245A CN 201210585854 CN201210585854 CN 201210585854 CN 201210585854 A CN201210585854 A CN 201210585854A CN 103024245 A CN103024245 A CN 103024245A
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Abstract
The invention discloses a system and a method for tracing sources of printed paper documents. The system comprises a printer, a scanner, a PC (personal computer) and a printer driver. The printer driver comprises a digital watermark embedding module and is used for driving the printer to complete the printing function of automatically embedding digital watermarks. The method includes the steps of firstly, submitting a printing task; secondly, capturing printing data; thirdly, embedding the digital watermarks; fourthly, printing paper documents; fifthly, scanning the paper documents; sixthly correcting digital images; seventhly, extracting the digital watermarks; and eighthly, determining document sources. While operation process of embedding the digital watermarks is effectively simplified for users and effect on digital watermark embedding algorithm during printing is effectively lowered, tracing the sources of the printed paper documents is achieved, copyrights of the documents are protected and leak ways are traced.
Description
Technical field
The present invention relates to the digital anti-counterfeiting technical field, further relate to and utilize printer, scanner, PC and printer driver structure to review the system and method for printing the paper document source.The present invention can obtain the information of author, document or printer by reviewing the source of printing paper document, the purpose that reaches by this protection document copyright and follow the trail of the approach of divulging a secret.
Background technology
Printer is computer system output peripheral equipment commonly used; development along with high accuracy input-output equipment; particularly precision surpasses the appearance of color jet-ink, laser printer and the high accuracy color copy machine of 1200dpi; so that becoming, the forgery of printed product is more prone to; the reduction of this infringement cost has brought dispute and the contradiction of a series of copyright protections; therefore, in the urgent need to a kind of system and method that can effectively identify, detect and review printing paper document source.
At present, temporarily without reviewing the system of printing the paper document source, and it is also few to review the method for printing the paper document source, sums up and gets up to be divided into two classes:
One class is used special material to realize printing the paper document source and is reviewed, and these class methods are used the special Paper Printing document of material, then directly review the document source according to the difference of paper material.The deficiency that these class methods exist is that used paper cost is high, has increased the printing cost.
Another kind of use encryption technology realization document source is reviewed, these class methods are used digital watermark technology more, be one of the most frequently used method of present digital anti-counterfeiting technical field, review but these class methods are applied to the electronic document source more, can not directly apply to printing paper document source and review.Such as people such as Weina J at " A novel least distortionlinear gain model for halftone image watermarking incorporating perceptual qualitymetrics " (Data Hiding and Multimedia Security, 2009, a kind of digital watermarking algorithm is proposed 4: 65～83), this algorithm comes embed digital watermark by the pixel value of revising on the fixed position, and the image after processing has preferably visual characteristic.But through printing, great changes will take place for pixel value, can not successfully extract due digital watermarking.Summary is got up, realize printing reviewing of paper document source if use digital watermark technology, then need to be before document delivery be printed to printer, the digital watermarking of using Digital Watermarking Embedded Algorithm with vision invisible but identifying author, document or Printer Information embeds document, when needs are reviewed printing paper document source, scan and obtain scan image printing paper document, then utilize the digital watermarking extraction algorithm to extract digital watermarking, review the source of printing paper document according to digital watermarking at last.Therefore the deficiency of this class methods existence is, the user need to realize embedding algorithm with specific software or the complicated program of operation before printed document, therefore increased user's operating process.And because the digital watermarking algorithm that these class methods are used does not have to consider or can not reduce the print procedure of printer to the impact of Digital Watermarking Embedded Algorithm from root, so the deficiency that these class methods also exist is not have the ability that anti-printing is attacked.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, solve printing cost height or the user's complex operation that prior art exists and can not resist the problem of attacking of printing, make up a cover and reviews the system of printing the paper document source and propose a kind of method of printing the paper document source of reviewing.
System of the present invention comprises printer, scanner, PC and printer driver.Printer is normal printer, is used for realizing basic printing function; Scanner is scanner, is used for realizing basic scan function; PC is ordinary PC, is used for connecting printer and scanner, finishes submission and the control of printing and scan task; Printer driver comprises print data trapping module, digital watermarking merge module and data-printing module, is installed in the common PC, is used for driving the printing function that printer is realized automatic embed digital watermark.
The concrete steps of the inventive method are as follows:
(1) submit print out task to: the user uses PC to submit print out task to printer;
(2) catch print data: the print data trapping module of printer driver, catch print data;
(3) embed digital watermark:
The digital watermarking merge module of printer driver is embedded into digital watermarking in the print data, and the print data after watermarked is sent to the data-printing module;
(4) print paper document:
The data-printing module of printer driver obtains printing paper document with the data-printing output that receives;
(5) scanning paper document:
The user uses scanner scanning to print paper document, obtains original scan image;
(6) correcting digital image:
Adopt method for correcting position, original scan image is proofreaied and correct, obtain correcting image;
(7) extract digital watermarking: extract the digital watermarking in the correcting image;
(8) determine the document source: determine the document source according to digital watermarking.
The present invention compared with prior art has the following advantages:
First; because the present invention uses normal printer and printing paper; review the technology of printing the paper document source based on special papery compared to existing technology; overcome the deficiency that required paper material is special and cost is higher, so that the present invention reduces greatly in order to protect copyright to review the required cost in document source.
Second, because the present invention uses the printer driver that comprises the digital watermarking merge module, can realize the printing function of automatic embed digital watermark, avoided compared to existing technology the user before printing, to use the troublesome operation of specific software or operation complicated process, so that the present invention has simplified user's operating process.
The 3rd, because the present invention uses the printer driver that comprises the digital watermarking merge module, in printer driver, finish digital watermarking and embed task, overcome compared to existing technology the impact of print procedure on watermark embedding effect, so that the present invention has better anti-printing attacking ability.
Description of drawings
Fig. 1 is entire system structural representation of the present invention;
Fig. 2 is the printer driver structural representation of system of the present invention;
Fig. 3 is the flow chart of the inventive method.
Embodiment:
The present invention will be further described below in conjunction with accompanying drawing.
With reference to accompanying drawing 1, system of the present invention comprises PC, printer driver, printer and scanner.PC is ordinary PC, is used for connecting printer and scanner, finishes submission and the control of printing and scan task; Printer driver is installed in the common PC, is used for the print data that reception and process user are submitted to, and the print data behind the embed digital watermark is sent to printer, drives the printing merit that printer is realized automatic embed digital watermark; Printer is normal printer, is used for realizing basic printing function; Scanner is scanner, is used for real
Now basic scan function generates scan image.
With reference to the accompanying drawings 2, printer driver of the present invention comprises print data trapping module, digital watermarking merge module and data-printing module.Wherein the print data trapping module is used for catching the print data that the user submits to; The digital watermarking merge module is used at the print data embed digital watermark; The data-printing module is used for the print data printout of embed digital watermark, obtains printing paper document.
Be described further below in conjunction with 3 pairs of methods of the present invention of accompanying drawing, its step is as follows:
Step 1. is submitted print out task to
The user uses PC to submit print out task to printer, and PC sends to printer driver with print data;
Step 2. is caught print data
The print data trapping module of printer driver is caught the print data that is sent by PC;
Step 3. embed digital watermark
The digital watermarking merge module of printer driver is embedded into digital watermarking in the print data, and the print data after watermarked is sent to the data-printing module;
Step 4. is printed paper document
The data-printing module of printer driver sends to printer with the data that receive, and the control printer obtains printing paper document with the printout of the print data after watermarked;
Step 5. scanning paper document
The user uses scanner scanning to print paper document, obtains original scan image;
Step 6. correcting digital image
The user adopts method for correcting position at PC, and original scan image is proofreaied and correct, and obtains correcting image;
Step 7. is extracted digital watermarking
Use the digital watermarking in the digital watermarking extraction algorithm extraction correcting image, obtain author, document or the Printer Information of digital watermarking sign;
Step 8. is determined the document source
Determine author or printer under the document to utilize author or Printer Information to determine to print the source of paper document according to the information that obtains, finish and print reviewing of paper document source, the purpose that reaches by this protection document copyright and follow the trail of the approach of divulging a secret.
Claims (4)
1. review the system of printing the paper document source for one kind, comprise printer, scanner, PC and printer driver, wherein:
Described printer is normal printer, is used for realizing basic printing function;
Described scanner is scanner, is used for realizing basic scan function;
Described PC is ordinary PC, is used for connecting printer and scanner, finishes submission and the control of printing and scan task;
Described printer driver is installed in the common PC, is used for driving printer, realizes the printing function of automatic embed digital watermark.
2. the system of printing the paper document source of reviewing according to claim 1, it is characterized in that: printer driver claimed in claim 1, comprise print data trapping module, digital watermarking merge module and data-printing module, wherein: described print data trapping module is used for catching the print data that the user submits to; Described digital watermarking merge module is used at the print data embed digital watermark; Described data-printing module is used for the print data printout of embed digital watermark, obtains printing paper document.
3. review the method for printing the paper document source for one kind, comprise the steps:
(1) submit print out task to: the user uses PC to submit print out task to printer;
(2) catch print data: the print data trapping module of printer driver, catch print data;
(3) embed digital watermark:
The digital watermarking merge module of printer driver is embedded into digital watermarking in the print data, and the print data after watermarked is sent to the data-printing module;
(4) print paper document:
The data-printing module of printer driver obtains printing paper document with the data-printing output that receives;
(5) scanning paper document:
The user uses scanner scanning to print paper document, obtains original scan image;
(6) correcting digital image:
Adopt method for correcting position, original scan image is proofreaied and correct, obtain correcting image;
(7) extract digital watermarking: extract the digital watermarking in the correcting image;
(8) determine the document source: determine the document source according to digital watermarking.
4. according to claim 3 reviewing printed the method that paper document is originated, and it is characterized in that: the method for correcting position described in the step (6) is as follows:
The first step, it is as a reference point to choose arbitrarily 2 of being on the same level line in step (4) gained is printed paper document;
Second step, with on step (5) the gained original scan image corresponding with reference point 2 as check point;
In the 3rd step, judge that whether two check points are on the same level line, if two check points are on the same level line, then do not proofread and correct; Otherwise, use the spinfunction of image editing software that original scan image is rotated operation, until two check points in the original scan image are when being on the same level line, whole original scan image is proofreaied and correct complete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210585854 CN103024245A (en) | 2012-12-14 | 2012-12-14 | System and method for tracing sources of printed paper documents |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201210585854 CN103024245A (en) | 2012-12-14 | 2012-12-14 | System and method for tracing sources of printed paper documents |
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| CN103024245A true CN103024245A (en) | 2013-04-03 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105842244A (en) * | 2016-03-25 | 2016-08-10 | 保定钞票纸业有限公司 | Paper identity recognition and tracing system through paper inherent information |
| CN110148100A (en) * | 2019-05-10 | 2019-08-20 | 腾讯科技（深圳）有限公司 | A kind of image conversion method, device, storage medium and computer equipment |
| US10387083B2 (en) | 2015-07-31 | 2019-08-20 | Hewlett-Packard Development Company, L.P. | Print format version with overlaid machine-readable link |
| CN110532210A (en) * | 2019-08-07 | 2019-12-03 | 北京数衍科技有限公司 | Safety obtains the bridging method of any output equipment data of operating system |
| CN111309672A (en) * | 2020-02-07 | 2020-06-19 | 重庆华谷科技有限公司 | Auxiliary management system for plan and pre-plan and intelligent law auxiliary service system |
-
2012
- 2012-12-14 CN CN 201210585854 patent/CN103024245A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10387083B2 (en) | 2015-07-31 | 2019-08-20 | Hewlett-Packard Development Company, L.P. | Print format version with overlaid machine-readable link |
| CN105842244A (en) * | 2016-03-25 | 2016-08-10 | 保定钞票纸业有限公司 | Paper identity recognition and tracing system through paper inherent information |
| CN110148100A (en) * | 2019-05-10 | 2019-08-20 | 腾讯科技（深圳）有限公司 | A kind of image conversion method, device, storage medium and computer equipment |
| US11908038B2 (en) | 2019-05-10 | 2024-02-20 | Tencent Technology (Shenzhen) Company Limited | Image transformation method and apparatus, storage medium, and computer device |
| CN110532210A (en) * | 2019-08-07 | 2019-12-03 | 北京数衍科技有限公司 | Safety obtains the bridging method of any output equipment data of operating system |
| CN110532210B (en) * | 2019-08-07 | 2021-10-22 | 北京数衍科技有限公司 | Bridging method for safely acquiring data of any output device of operating system |
| CN111309672A (en) * | 2020-02-07 | 2020-06-19 | 重庆华谷科技有限公司 | Auxiliary management system for plan and pre-plan and intelligent law auxiliary service system |
| CN111309672B (en) * | 2020-02-07 | 2023-11-17 | 重庆华谷科技有限公司 | Case-setting and case-pre-setting auxiliary management system and intelligent legal auxiliary service system |
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Application publication date: 20130403 |