CN100363946C - Safety file printing method suitable for multi printing devices - Google Patents
Safety file printing method suitable for multi printing devices Download PDFInfo
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- CN100363946C CN100363946C CNB2005101343207A CN200510134320A CN100363946C CN 100363946 C CN100363946 C CN 100363946C CN B2005101343207 A CNB2005101343207 A CN B2005101343207A CN 200510134320 A CN200510134320 A CN 200510134320A CN 100363946 C CN100363946 C CN 100363946C
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Abstract
The present invention relates to a safety file printing method suitable for a plurality of printing devices, which belongs to the technical field of file print. In the existing copy-proof basal striation printing technique, background basal striation is sometimes covered by a large-area white region in certain cases, which severely affects the printing effect of the copy-proof basal striation. The method of the present invention comprises: when a printer is driven to analyze and interpret file content, dot matrix data of the copy-proof basal striation in a size of a page is generated simultaneously, and all the image areas in the file are recognized. Besides, a union set of the areas is obtained. Subsequently, the corresponding part in the dot matrix data of the copy-proof basal striation is filled with white color according to the area scope represented by the union set. Finally, the dot matrix data of basal striation and the dot matrix data of the normal file are superposed and printed to obtain output. With the method of the present invention, the defect that the large area of the copy-proof basal striation is covered by the white area is perfectly compensated. As a consequence, the present invention greatly raises the printing effect of the copy-proof basal striation under any printing environment.
Description
Technical field
The invention belongs to the document printing techniques field, relate to a kind of Method of printing of security document of anti-duplicating, relate in particular to a kind of Method of printing that is applicable to the security document of multiple printing device.
Background technology
Paper is the important carrier that information is propagated, and it is particularly important that the function of keeping secret of printed text also just shows, and for example classified papers have just become problem with testimonial improper duplicating, and this has promoted the development of antiforge technology to a certain extent.Be worth causing that what pay special attention to and pay attention to is duplicating machine in the office automation utility appliance, it is the most indispensable utility appliance in the business automation equipment.No matter modern duplicating machine has all reached very high level on the function or on printing quality.What have has an intelligent editing ability, can also realize that many duplicating machine connect mutual transmission information.The duplicating machine that some are more senior even can also realize color photocopying, the banknote that prints off can reach the degree of looking genuine.This ability of duplicating machine make it efficiently high texture print various documentations, alleviated clerical workforce's the labor capacity of copying widely, improved office efficiency, be subjected to clerical workforce's very big welcome.But simultaneously, it also makes to maintain secrecy takes precautions against the new problem that faces, and the confidential document data is easy to be copied in transmittance process and causes out of controlly, and duplicating machine becomes the instrument that makes things convenient for of letting out, stealing secret information.Intercepting and capturing the confidential document data overwhelming majority who takes the border out of from customs in recent years is that the situation of copy just can be seen the serious of this problem.Address this problem, except strengthening that duplicating machine is duplicated the management and control of confidential document data, the anti-reprography of confidential document data is used in also necessary research.
In order to stop the improper duplicating of document, occurred by below normal document data, printing the technology of the false proof shading of one deck simultaneously, imbed printed words such as " forbid duplicate ", " COPY " that are difficult to recognize, " VOID " in this shading in advance, when document during by improper duplicating, these literal just observably display, and can clearly be judged as copy in view of the above.But many times, when containing large-area white space in the data of document, most of shading-duplication preventing of document printing is covered by white portion, thereby had a strong impact on the anti-photocopying effect of security document, such as by instrument document printing such as PowerPoint, Acrobat, IE browser, outlook the time, normal document data is interpreted into the dot matrix image data by print drive, thereby makes shading add the White-opalescent zone.Can also be construed to one deck dot array data to false proof shading in advance this moment, be provided with then be placed on after the transparent attribute normal data above, can solve the problem that shading-duplication preventing is covered by the zone of white like this.But this method is not optimal, because when shading-duplication preventing sees through white portion, also influenced the image-region in the document data greatly, white and grey color part have added a lot of extra sites in the image-region, so grievous injury the raw data of image, also influenced the visual effect of normal picture data simultaneously greatly.
Technical scheme
The objective of the invention is at the defective that exists in the prior art, propose a kind of Method of printing that is applicable to the security document of multiple printing device.This method can be under the prerequisite that does not influence picture material in the document, remedy the defective that the shading-duplication preventing large tracts of land is covered by white portion well, the background shading data can be discerned by any printing device simultaneously, thereby solve the printing effect problem of shading-duplication preventing under any printing environment.
For reaching above purpose, the technical solution used in the present invention is:
A kind of Method of printing that is applicable to the security document of multiple printing device may further comprise the steps:
(1) reads the page size information of document, thereby call the linked network module is laid first gray scale in the described page site generation background pattern dot array data, obtain the dot array data of each caution literal and call the linked network module is laid second gray scale in each caution text profile site, be added on the background patterns dot array data according to the wide and high dot array data of the dot array data of predetermined rule and described caution literal described caution literal, obtain the dot array data of interference pattern, thereby gather φ according to the wide and high dot array data of the dot array data of predetermined rule and the described interference pattern dot array data of acquisition shading-duplication preventing that is added on the background patterns dot array data that is superimposed with caution word lattice data with described interference pattern;
(2) explanation and analytical documentation content identify image-region Ω all in the document space of a whole page
1
(3) with image-region Ω
1With the overlapping and alignment placement of described shading-duplication preventing dot array data set φ, according to image-region Ω
1Represented scope, the value of all picture elements of appropriate section is set to 0 in the dot array data set φ of described shading-duplication preventing, thereby obtains new dot array data set φ
1
(4) with new dot array data set φ
1Overlay normal document dot array data above, and with described new dot array data set φ
1Attribute be set to transparent.
When middle explanation of step (2) and analytical documentation content, printer driver identifies image-region Ω all in the document space of a whole page
1, calculate each image-region Ω
1Boundary rectangle, and calculate the union of all boundary rectangles.
Further, image-region Ω in the step (3)
1Pixel value under the dot matrix image zone under covering is 1 the direct negate of point, is that 0 picture element is constant.
Further, the new dot array data set φ of step (4) generation
1Through merging with normal document data again after the data compression process, to reduce data volume.
For reaching above purpose, another technical scheme that the present invention adopts is: a kind of Method of printing that is applicable to the security document of multiple printing device may further comprise the steps:
(1) explanation and analytical documentation content identify all images object in the document, and calculate the circumscribed rectangular region that each image object surrounds, and the union of getting all described circumscribed rectangular region then is as image-region Ω
1
(2) calculate layout area Ω subtracted image zone Ω
1Difference set Ω
2, with difference set Ω
2Represented Region Segmentation is a plurality of mutually disjoint rectangular areas, calls the linked network module is laid first gray scale in each independently described rectangular area site, image-region Ω
1Thereby directly be filled white and obtain the background patterns dot array data, obtain dot array data and the dot array data of interference pattern and the site of calling linked network module laying second gray scale in each caution text profile of each caution literal, from the lower left corner in background patterns zone is starting point, judges successively whether each picture element drops on difference set Ω
2In the scope, if then the dot array data of described caution literal and the dot array data and the background patterns dot array data of interference pattern are superposeed, otherwise do not superpose, thereby the dot array data that obtains shading-duplication preventing is gathered φ;
(3) with new dot array data set φ
1Overlay normal document dot array data above, and with described new dot array data set φ
1Attribute be set to transparent, described new dot array data set φ
1Be according to image-region Ω
1Corresponding partially filled dot array data set for obtaining after the white among the φ is gathered with dot array data in the zone of expression.
Effect of the present invention is: adopt method of the present invention, can be under the prerequisite that does not influence picture material in the document, remedy the defective that the shading-duplication preventing large tracts of land is covered by white portion well, the background shading data can be discerned by any printing device simultaneously, thereby solve the unfavorable problem of printing effect of shading-duplication preventing under any printing environment.
The method of the invention is applicable to any one multi-function peripheral MFP (MultifunctionalPrinter) and common printer apparatus, and the hardware of printing device is had no requirement, thereby has market application foreground very widely.
Description of drawings
Fig. 1 is the content synoptic diagram of original document
Fig. 2 is the effect synoptic diagram that prior art is printed
Fig. 3 is that the shading-duplication preventing dot array data is placed on the printing effect synoptic diagram above the document data
Fig. 4 is the effect synoptic diagram after the local amplification of Fig. 3
Fig. 5 is the linked network effect synoptic diagram of page dot matrix
Fig. 6 is a caution word lattice synoptic diagram
Fig. 7 is an interference pattern dot matrix synoptic diagram
Fig. 8 is one deck dot array data synoptic diagram after background shading merges
Fig. 9 is the effect synoptic diagram after the inventive method is printed
Figure 10 is the effect synoptic diagram after the local amplification of Fig. 9
Figure 11 is a schematic flow sheet of the present invention
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
Embodiment 1:
At first select representative document synoptic diagram, as shown in Figure 1.In Fig. 1, mainly comprise the piece image of the document first half, opaque rectangle frame that has black surround and a string literal " this is the test specimen page about shading-duplication preventing ".As seen from Figure 1, the moon in the image also is the opaque and white zone.When select adding shading-duplication preventing and print, the background shading data can be attached to automatically the document normal data below, printing effect is as shown in Figure 2.Obviously this is not desirable printing effect, and it is understandable fully that the background shading data below the image-region are capped, because image itself is exactly opaque, and can not arbitrarily change the content of view data in the process of printing.But the phenomenon of background shading data is to be difficult to receive below covering for the rectangular area of White-opalescent, because white portion itself does not have too big meaning, if white portion is excessive, have a strong impact on the effect of shading-duplication preventing on the contrary, do not had the purpose that prevents that document from illegally being duplicated; And this situation is also more common; such as the opaque attribute that graphics primitive object is set through regular meeting in Word document; when also having by PowerPoint printing PPT document; usually can be construed to a bitmap file to document data earlier; deliver to the enterprising line output of printer then, at this moment the bottom of document printing has been added extra white portion.Similar phenomenon shown in Figure 2 can appear during especially by instrument print file such as Outlook, IE browser, Acrobat.We must seek new solution for this reason.
In existing technology, the shading-duplication preventing data are usually located at the front of normal document data, thus in the document of printout, shading-duplication preventing be in normal document content below.We can consider earlier shading-duplication preventing is construed to dot array data for this reason, and it is transparent that its attribute is set, be placed on then normal document content above.Normal document content will reveal out that the effect after the printing as shown in Figure 3 by the white portion in the shading-duplication preventing.The phenomenon of large tracts of land White-opalescent zone covering background shading has obtained very big improvement in so normal document.But simultaneously also with the negative influence of another one, be exactly among Fig. 1 the first half image-region content be subjected to damage, increased a lot of extra sites above.Influence for white portion in the picture is more obvious, and the effect synoptic diagram after the subregion of picture is amplified as shown in Figure 4.In the moon part 40 among Fig. 4 should be white, and what appropriate section can be seen in Fig. 1 is very clear, but has increased very heavy one deck site in month bright area this moment, has had a strong impact on the visual effect of picture.When if image content is important, this result can not receive especially.
At present way be received within the background shading document normal content below, do not need to be provided with transparent attribute, can adopt page-description language commonly used (PS, PCL or PDF) that such shading data description is become data file, the normal data with document merges back printout simultaneously then.
Connect down concrete the introduction and solve the problem that the White-opalescent zone covers shading, also do not influence the content of picture in the document simultaneously by the method for the invention.In the method, background shading be placed on the document normal content above, transparent attribute is set then, so just require to be placed on the dot array data that top content must be one deck, otherwise the overlapping situation in site can occur.Mainly comprise three parts in the background shading data: background patterns zone, caution literal and interference pattern.In the present embodiment, the background patterns zone is the dot array data that has after a kind of linked network of gray-scale value, and the caution text profile is the site that is filled with another kind of gray scale in the zone, and interference pattern is that white lines are formed.Describe three layers of object below in detail and merge into the process of one deck dot array data.
(1) at first read the page size information of document, call the linked network module with page area as the linked network zone, lay a kind of site of gray scale, after the effect after the linked network is amplified as shown in Figure 5, thereby form the background patterns zone, this zone is in orlop;
(2) api function by Windows obtains the BMP view data that each warns the literal object, such as the BMP data that provided " C " among Fig. 6, obtains the dot array data of other any literal equally; Call the linked network module, successively with each text profile as the linked network zone, lay the site of another gray scale; Calculate the position that each caution literal superposes according to certain queueing discipline in background patterns, and wide and high according to the BMP view data of each literal object, calculate the zone that this object covers in background patterns, carry out of the stack of literal object then with the background patterns zone, with " C " is that example is specifically set forth additive process: the dot matrix object data of " C " that will obtain earlier carries out inversion operation, also be that view data in the text profile zone becomes 0, the outer view data of contour area becomes 1; Dot array data after will changing again carries out and operation with the pixel point value of relevant position in the background linked network zone; Last again with the view data after the linked network in the text profile with through with the background patterns of operation in the picture element of relevant position do or operation.
(3) obtain the BMP view data of interference pattern by the api function of Windows, interference pattern is the lines of white, but for convenience of description, the color of lines is made as black, as shown in Figure 7.Because interference pattern does not need to carry out the linked network operation, directly calculate position in the dot matrix that each interference pattern unit obtains in (2), utilize the width of interference pattern dot array data and the All Ranges that the high computational interference pattern is covered again according to certain queueing discipline.In each zone, do following operation: earlier with the dot array data negate of interference pattern, then according to from top to bottom, from left to right order, successively the picture element in the dot matrix that obtains in each picture element and (2) is done and operation.
Through the effect synoptic diagram behind the above-mentioned union operation as shown in Figure 8.In order to reduce the size of dot array data, to the image compression operation that carries out shown in Figure 8, obtain image point matrix data set φ, thereby improve the explanation efficient of print control unit.
Next in the process of explanation and analytical documentation content, identify all images object in the document, and calculate the rectangular area that each image-region surrounds, and then calculate the union Ω of all rectangular areas
1
Search for Ω among the view data dot matrix set φ after compression
1The zone of representative, and all view data in should the zone all are changed to 0, the image in just should the zone becomes white, thereby obtains new image point matrix data set φ
1
At last with φ
1Append in the back of normal document data, and transparent attribute is set.Data file after merging is printed, and the effect after the output as shown in Figure 9.As seen from Figure 9, method of the present invention has solved the problem of large tracts of land white portion covering background shading in the document well, brings any damage for simultaneously the image data in the document, does not also influence the visual effect of document normal content.Clearer in order to see ground, as shown in figure 10,100 moon part was without any the interference more than the site after the part of Fig. 9 amplified, and other parts have also kept the integrality of original image data, thereby have intactly solved the printing problem that is embedded with shading-duplication preventing.
Figure 11 is an overall flow synoptic diagram of the present invention.
Embodiment 2:
The embodiment of another technical scheme that the present invention adopts is: a kind of Method of printing that is applicable to the security document of multiple printing device may further comprise the steps:
(1) explanation and analytical documentation content, all image-region Ω in the identification document space of a whole page
1
With the recognition methods among the embodiment 1: at first identify all images object in the document, and calculate the circumscribed rectangular region that each image-region surrounds, and then calculate the union Ω of all rectangular areas
1In the shading-duplication preventing that generates, Ω
1Be blank in the represented zone, when the dot array data that carries out shading-duplication preventing follows the normal dot array data of document to merge, the situation of picture material in the document can not occur influencing like this.
(2) calculate layout area Ω and deduct Ω
1Difference set Ω
2, and at Ω
2Generate the dot array data set φ of shading-duplication preventing in the zone;
At first with difference set Ω
2Represented Region Segmentation is a plurality of mutually disjoint rectangular areas, and the summation of all rectangular areas after cutting apart is with Ω
2Identical;
Then call the linked network module and independently lay a kind of site of gray scale in the rectangular area at each, and image-region Ω
1Then directly be filled to be white, so the regional Ω after the linked network
2Regional Ω with white
1Just formed the background patterns zone, this zone is in orlop equally;
The acquisition process of the dot array data in caution character area and interference pattern zone is with embodiment 1, it is different that but the dot array data additive process has a bit: when stack caution word lattice data and interference pattern are regional on the background patterns dot array data, the lower left corner of at first selecting the background patterns zone is starting point, judges successively whether each pixel drops on Ω
2In the represented regional extent.If then the stacked system according to two kinds of dot array datas carries out identical operations; Otherwise directly skip over.Until all zones are disposed.
(3) with φ
1Overlay normal document dot array data above, and its transparent attribute is set.
Above-mentioned steps is an embodiment preferred for this invention.Those skilled in the art be not difficult to draw other implementation method and without prejudice to overall thought of the present invention.
Such as, choose different caution literal and interference pattern;
Such as, adopt diverse ways to merge background patterns, caution literal and interference pattern.
Claims (6)
1. Method of printing that is applicable to the security document of multiple printing device may further comprise the steps:
(1) reads the page size information of document, thereby call the linked network module is laid first gray scale in the described page site generation background pattern dot array data, obtain the dot array data of each caution literal and call the linked network module is laid second gray scale in each caution text profile site, be added on the background patterns dot array data according to the wide and high dot array data of the dot array data of predetermined rule and described caution literal described caution literal, obtain the dot array data of interference pattern, thereby gather φ according to the wide and high dot array data of the dot array data of predetermined rule and the described interference pattern dot array data of acquisition shading-duplication preventing that is added on the background patterns dot array data that is superimposed with caution word lattice data with described interference pattern;
(2) explanation and analytical documentation content identify image-region Ω all in the document space of a whole page
1
(3) with image-region Ω
1With the overlapping and alignment placement of described shading-duplication preventing dot array data set φ, according to image-region Ω
1Represented scope, the value of all picture elements of appropriate section is set to 0 in the dot array data set φ of described shading-duplication preventing, thereby obtains new dot array data set φ
1
(4) with new dot array data set φ
1Overlay normal document dot array data above, and with described new dot array data set φ
1Attribute be set to transparent.
2. a kind of Method of printing that is applicable to the security document of multiple printing device as claimed in claim 1 is characterized in that: when middle explanation of step (2) and analytical documentation content, printer driver identifies image-region Ω all in the document space of a whole page
1, calculate each image-region Ω
1Boundary rectangle, and calculate the union of all boundary rectangles.
3. a kind of Method of printing that is applicable to the security document of multiple printing device as claimed in claim 1 or 2 is characterized in that: image-region Ω in the step (3)
1Pixel value under the dot matrix image zone under covering is 1 the direct negate of point, is that 0 picture element is constant.
4. a kind of Method of printing that is applicable to the security document of multiple printing device as claimed in claim 1 or 2 is characterized in that: the new dot array data set φ that step (4) generates
1Through merging with normal document data again after the data compression process.
5. a kind of Method of printing that is applicable to the security document of multiple printing device as claimed in claim 4 is characterized in that:
Image-region Ω in the step (3)
1Pixel value under the dot matrix image zone under covering is 1 the direct negate of point, is that 0 picture element is constant;
The new dot array data set φ that step (4) generates
1Through merging with normal document data again after the data compression process.
6. Method of printing that is applicable to the security document of multiple printing device may further comprise the steps:
(1) explanation and analytical documentation content identify all images object in the document, and calculate the circumscribed rectangular region that each image object surrounds, and the union of getting all described circumscribed rectangular region then is as image-region Ω
1
(2) calculate layout area Ω subtracted image zone Ω
1Difference set Ω
2, with difference set Ω
2Represented Region Segmentation is a plurality of mutually disjoint rectangular areas, calls the linked network module is laid first gray scale in each independently described rectangular area site, image-region Ω
1Thereby directly be filled white and obtain the background patterns dot array data, obtain dot array data and the dot array data of interference pattern and the site of calling linked network module laying second gray scale in each caution text profile of each caution literal, from the lower left corner in background patterns zone is starting point, judges successively whether each picture element drops on difference set Ω
2In the scope, if then the dot array data of described caution literal and the dot array data and the background patterns dot array data of interference pattern are superposeed, otherwise do not superpose, thereby the dot array data that obtains shading-duplication preventing is gathered φ;
(3) with new dot array data set φ
1Overlay normal document dot array data above, and with described new dot array data set φ
1Attribute be set to transparent, described new dot array data set φ
1Be according to image-region Ω
1Corresponding partially filled dot array data set for obtaining after the white among the φ is gathered with dot array data in the zone of expression.
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|---|---|---|---|
| CNB2005101343207A CN100363946C (en) | 2005-12-14 | 2005-12-14 | Safety file printing method suitable for multi printing devices |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101343207A CN100363946C (en) | 2005-12-14 | 2005-12-14 | Safety file printing method suitable for multi printing devices |
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| CN100363946C true CN100363946C (en) | 2008-01-23 |
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| CN103198345A (en) * | 2013-04-01 | 2013-07-10 | 深圳市银之杰科技股份有限公司 | Method of preventing copy of two-dimension code and two-dimension printer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040184065A1 (en) * | 2002-12-19 | 2004-09-23 | Haike Guan | Method and apparatus for preventing reproduction of copy-inhibited documents |
| CN1542672A (en) * | 2003-04-30 | 2004-11-03 | 四川大学 | Articles false proof multi-image hiding and fabricating method |
| US20050078993A1 (en) * | 2003-10-10 | 2005-04-14 | Canon Kabushiki Kaisha | Information processing apparatus and information processing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040184065A1 (en) * | 2002-12-19 | 2004-09-23 | Haike Guan | Method and apparatus for preventing reproduction of copy-inhibited documents |
| CN1542672A (en) * | 2003-04-30 | 2004-11-03 | 四川大学 | Articles false proof multi-image hiding and fabricating method |
| US20050078993A1 (en) * | 2003-10-10 | 2005-04-14 | Canon Kabushiki Kaisha | Information processing apparatus and information processing method |
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| CN1776718A (en) | 2006-05-24 |
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