CN101124589A - System and method for authenticating objects using multiple-level encoding and decoding - Google Patents
System and method for authenticating objects using multiple-level encoding and decoding Download PDFInfo
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Abstract
A method of producing a digital multiple-level encoded image is presented. The method comprises obtaining a digital authentication image, obtaining a first encoding parameter set comprising one or more encoding parameters, and constructing a first encoded image. The first encoded image is constructed using a first encoding methodology, the digital authentication image and the first encoding parameter set. The method further comprises obtaining a second encoding parameter set comprising one or more encoding parameters and constructing a second encoded image using a second encoding methodology, the first encoded image and the second encoding parameter set. The second encoded image may be decoded to reveal the first encoded image using a decoder having characteristics corresponding to at least a portion of the encoding parameters of the second encoding parameter set. The first encoded image may be decoded to reveal the authentication image using a decoder having characteristics corresponding to at least a portion of the encoding parameters of the first encoding parameter set.
Description
The cross reference of related application
The application requires the U.S. Provisional Application 60/600 according to submission on August 9th, 2004, the U. S. application 11/068 that on February 28th, 027 and 2005 submitted to, 350 (' 350 applications) enjoy priority, and these two parts of applications are all introduced with as a reference at this, wherein ' 350 applications require the U.S. Provisional Application of submitting to according on August 26th, 2,004 60/565,300 and enjoy priority.U. S. application 10/847,962 (' 962 applications that the application also relates on May 18th, 2004 and submits to) and the U. S. application of submitting on May 18th, 2,004 10/897,943 (' 943 application), wherein each part application is all introduced with as a reference at this.
Technical field
What the present invention related generally to is field of object security authentication, in particular by using coded image to come authentication of documents and other objects.
Background technology
Document is forged and the product personation is to be used the significant problem that several different methods is handled.Wherein a kind of potential or hidden image of using or being printed on institute's object of protection that is to use than successful method.Usually, these images can't be seen under the help that does not have the Special Equipment of its reproduction.
A kind of method that forms latent image is that image is carried out optical encoding, so that this image can only be checked by using corresponding decoding equipment when printing.This graphical encoded images can be used in and be close on any type of document printing, comprising law documentation, I.D. and proof of identification, label, cash, stamp or the like.In addition, they can also be applied in commodity or the commodity packaging that easily is forged.
Concerning the object of having used graphical encoded images, by coded data is decoded, and decoded picture compared with the expection authentication image, can authenticate these objects.This authentication image can comprise distinctive information of institute's authentication object or the information relevant with one group of analogical object (for example product of being produced by particular manufacturer or facility).The generation of coded image and use can Be Controlled is difficult for it is duplicated thus.In addition, by the configuration codes image, can also make the processing of distorting document or label information become very obvious.
For using graphical encoded images to prevent to forge or unauthorized generates the processing of document and other products, its efficient is to depend on software security and in order to the coding parameter of encoded authentication image.In addition, it also depends in order to final coded image is applied to the access control that system carried out of institute's authentication object.Concerning the coding parameter or authentication image that are used to produce coded image, its unauthorized known make the replica code image and be applied to incredible product or document becomes possibility.
Be necessary thus to take measures guaranteeing the security of encoding process, and this processing is difficult to or can't be subjected to reverse-engineering or be replicated.
Summary of the invention
One aspect of the present invention provides a kind of method that is used to produce digital multilevel coding image.This method comprises: obtain digital authentication image, obtain the first coding parameter collection that has comprised one or more coding parameters, and construct first coded image.First coded image is to use first coding method, digital authentication image and first coding parameter collection structure.This method also comprises: obtain the second coding parameter collection that has comprised one or more coding parameters, and use second coding method, first coded image and the second coding parameter collection to construct second coded image.The demoder that has at least a portion coding parameter corresponding characteristic of concentrating with second coding parameter by use second coded image of decoding can show first coded image.First coded image then can use have with first coding parameter in the demoder of at least a portion coding parameter corresponding characteristic decode so that show authentication image.
Another aspect of the present invention provides a kind of method that is used for decoded digital multilevel coding image, wherein this image is by using first coding method, authentication image and the first coding parameter collection to construct first digital coding image, and uses second coding method, first coded image and the second coding parameter collection to construct second digital coding image subsequently and produced.This method comprises: use at least a portion of the second coding parameter collection, second digital coding image of decoding, so that show first digital coding image.This method also comprises: use at least a portion of the first coding parameter collection, first digital coding image of decoding, so that show authentication image.
Description of drawings
Read detailed description hereinafter in conjunction with the drawings, can more fully understand the present invention, in the accompanying drawings, wherein used identical reference designator to indicate similar parts, and wherein:
The illustration of the graphical encoded images that Fig. 1 is to use optical decoder equipment to decode to be printed;
Fig. 2 is to use the grating moving method and forms the illustration of illustrative grating encoding image from the primary and secondary image;
Fig. 3 is to use the decode illustration of coded image of Fig. 2 of optical decoder device;
Fig. 4 is the illustration with blank image of periodically variable tonal density;
Fig. 4 of secondary image that Fig. 5 is embedded contrasts the illustration of image;
Fig. 6 is the coded image that forms from the primary image of Fig. 5 and contrast image;
Fig. 7 is the process flow diagram of constructing the method for digital multilevel coding image according to the embodiment of the invention;
Fig. 8 is the process flow diagram that comes the method for decoded digital multilevel coding image according to the embodiment of the invention;
Fig. 9 is the synoptic diagram of constructing the system of digital multilevel coding image according to the embodiment of the invention; And
Figure 10 is the synoptic diagram that is used for the system of authentication object.
Embodiment
What embodiments of the invention related to is by using visual coding or graphical encoded images to protect the method for document and other article.These images are embedded in background or the source images usually, and are printed on the article that are subject to change, forge or palm off.Term used herein " graphical encoded images " and " coded image " refer to by using a coding method and a set of encode parameters in that background field or second image are inner and handle and/or hide the image that first image is produced.Coded image produces in such a way, and wherein when being employed or print, if do not use decoding device, first image can not be discovered by human eye so.Some coded image has comprised the latent image of hiding, and is difficult to discover from background or primary image the existence that these images thus.Other coded images comprise the content of easily being found out owing to passed through systemic scrambling or the processing of other modes but can't reading.
Regulation of the present invention is applied to authentication image in order with one or more coding methods, so that produce the multilevel coding image.Each coding step can use different coding methods and/or different coding parameters to construct, thus can't be by using single decoding parts or by decoding the synthetic coded image of complete decoding, so that show authentication image based on the single of the demoder of software.
It should be understood by one skilled in the art that, term used herein " coded image " can be applied to the image printing or otherwise apply, and can be applied to the digital picture of being created by data processor or use digital camera or other image acquisition equipments and the digital picture obtained from print image.
For purposes of the invention, the coded image that acquires a special sense is that those are configured to use based on the decoding device of lens and by the image of optical decoder.The ability that this image has used the lens (for example biconvex lens) of some type to be had is so that come picture material is sampled according to its optical characteristics.For instance, biconvex lens can be used to come picture material is sampled and amplified according to the lenticule frequency of lens.Employed image is normally encoded by a certain in the some kinds of methods, these methods generally include: determine a frequency and the corresponding regularization periodic patterns of frequency as the biconvex lens of demoder, then introduce the corresponding pattern distortion of content with coded image then.Can make these distortions very little here, thereby be difficult to the naked eye from the regularization pattern, find out this image.This coded image both can look like at United States Patent (USP) 3,937, disclosedly in 565 produce with analog form like that by using special photographic goods, also can look like at United States Patent (USP) 5,708,717 (' 717 patents) disclosedly in produce with digital form like that, wherein these two parts of patents are all introduced with as a reference at this.
As disclosed in ' 350 applications, also can use with the optical mode image encoded and to decode based on the decoding device of software.This equipment will use in order to the coding parameter of coded image one or more decoding algorithms is applied to digital coding image.Its output then is a digital decoded result, this result can compare with original authentication image, in addition also can be from this information extraction as a result, so that compare with related Given information of the special object of having used coded image or the information of otherwise determining.
Digitally coded image can be embedded in background or other images, is difficult to perceive the individualism of coded image thus.With reference to figure 1, coded image 10 can use elementary or source images 20 and secondary image 40 are set up, and wherein said secondary image 40 is can only to be embedded in the primary image 20 by the mode that the decoding device 30 with preset frequency is checked with a kind of.Primary image can be blank gray scale or color background image as in the coded image of Fig. 1, and perhaps it also can comprise the visual image content, for example pattern, photograph or other forms of mark.This secondary image also can be any type of image or mark, and can comprise relevant with primary image in some aspects mark.In illustrative coded image 10, secondary image 40 is based on the repeat patterns of word " Department ofTransportation (traffic department) ".This secondary image can be encoded separately, then integrates then or is embedded in the primary image, and in addition, inline processed also can adopt a kind ofly like this to be finished its mode of encoding when embedded secondary image.As shown in Figure 1, by decoding device 40 being placed the correct orientation of coded image 10 tops, can view secondary image.In the example of Fig. 1, decoding device has transverse axis 32 and Z-axis 34, and coded image 10 has transverse axis 22 and Z-axis 24.When the orientation of the transverse axis 32 of decoding device 30 differs decoding angle α with respect to the transverse axis 22 of coded image 10, at this moment will show decoded picture.Decoding angle α is a coding parameter, and this parameter was determined before coding and embedded secondary image.
Can be divided into two kinds of method in common in order to method secondary image is embedded or that be incorporated in the primary image.In first method, wherein used preset frequency and on primary image, applied the cyclic behaviour of regularization.This is handled basically by finishing in preset frequency rasterisation primary image.Then, secondary image will be mapped to primary image, thus can with secondary image in the regularization behavior of the corresponding location change primary image in the position that comprises picture material.These changes are enough little, and human eye is difficult to it is differentiated out thus.But when having placed frequency and the corresponding biconvex lens of preset frequency above primary image, these lens will change the mode that forms potential secondary image and sample and amplify the primary image content by disclosing these with a kind of.
In second method, the cyclic behaviour of regularization at first puts on secondary image rather than primary image, wherein as long as there is content in secondary image, will change in the behavior so.Then, this secondary image is mapped to primary image, and the primary image content will be changed by pixel ground according to the secondary image content of encoding.
Will discuss the example of said method now in more detail.A simplified example of first method has been described in Fig. 2～3.What Fig. 2 showed is the zoomed-in view of optical encoding image 110.Coded image 10 is to construct from the secondary image of the primary image of people's face and letter " SI ".This primary image is rasterisation on characteristic frequency and grating angle α.Secondary image then is to be embedded within the primary image by introduce change in location (moving) in the raster element that is in the corresponding position of secondary image content.These move can be enough little, is the interior poly-image that is embedded in the primary image so that naked eyes can't be construed to it.Grating frequency is high more, and differentiation is moved and/or differentiated that embedded image is just difficult all the more.These existence of moving can further be pretended to the transfer of ground, shift position by carrying out as far as possible gently and smoothly from the not mobile stop position of image.What as shown in Figure 2, its result obtained is to be easy to check that primary image still is not easy to differentiate secondary image ground coded image 110.As shown in Figure 3, when the correct orientation above coded image 110 (grating angle α just) placed when having with the lenticular of the corresponding line frequency of raster element frequency decoding lens 120, at this moment can see secondary image (letter " SI ").
The existence of embedded image can further change by the tonal density than zonule or window in the compensation primary image to be pretended.This processing can be finished by the individual pixel that modification is moved in the image, and the average tonal density of each window all can keep identical with the respective window of mobile image not thus.
One of ordinary skill in the art will appreciate that said method can be used in combination with any type of point, symbol or line grating method.In addition, described in applying in common He ' 943, unsettled ' 962, this method and additive method can also be used for embedded a plurality of secondary image with different coding parameter.
Special circumstances of the disclosed method of ' 717 patent that said method can be considered to be.In the method, wherein at first used the method for scrambling of describing in the patent of ' 717 secondary image of encoding, the grid stroke of the primary image of then recombinating then is so that consistent with the pattern through the secondary image of coding.The coded image that finally obtains can use a lenticular decoding device to check, wherein this equipment have in order to the rasterisation primary image and in order to the coding secondary image same frequency.
If comparatively it is desirable to output image is continuous-tone image (opposite with the grating images that produces in the first method), can use so secondary image is embedded in second kind of universal method in the primary image.In the method, secondary image is to be embedded in " blank " contrast image, and wherein this image does not periodically have other guide the tonal variation except regularization.The contrast images of then, embedded secondary image will be mapped to primary image.
Discuss a simplified example of this method referring now to Fig. 4～6.What Fig. 4 showed is a blank image 210, and in this image, the tone value of image pixel changes as periodic function, and wherein this function can be square wave, sine wave, triangular wave or the like.The frequency of the frequency of this function and lenticular decoding lens is complementary.Described periodically variable angular range will be set up the angle that is used for decode encoded images.As shown in Figure 5, secondary image be by with secondary image in the phase place of corresponding any one the position moving period property function of location of content be embedded within the contrast image 210.So, in through the contrast image of revising 210, the tonal variation deviation of regularization is corresponding with the content of secondary image.
Then, be mapped to primary image 230 through the contrast image of revising 210 with will pursuing pixel.The pixel of primary image 320 then is illuminated or deepening, so that the tonal variation pattern of the corresponding pixel in the coupling contrast image 210.In Fig. 6, shown final coded image.Be illuminated or the primary image pixel of deepening for those, its actual quantity can use transforming function transformation function to determine, wherein this function is normally as the look-up table definition.These functions there are differences, and this point then depends on image applications.Give an example, this transforming function transformation function can be designed to special and specific print processing (for example ink-jet, dye sublimation, laser printing or the like) and be used in combination.
It will be understood by those skilled in the art that by using said method, can utilize as the different coding parameter of in the application of common He ' 943, unsettled ' 962, describing and come embedded a plurality of secondary image.Then, each secondary image can be carried out independent decoding by the demoder corresponding to the correlative coding parameter set.This method should not disturbed mutually with multilevel coding image of the present invention, and multilevel coding image wherein of the present invention need carry out the order decoding to each grade coded image.But should be appreciated that the coded image of the given level that any the method according to this invention produces can be introduced a plurality of secondary image.
The output of any said method both can be the coded image of printing (just being printed on the elementary and potential secondary image of the set on document or other article), it also can be digital coding image, wherein said digital coding image both can transmit, also can be embedded in the digital document, can also be saved, for later use.
The method of another kind of embedded image generally is used in banknote and the check.In the method, latent image is by creating with the direction of the corresponding position change optical grating element of hidden image content in visual image.Give an example, with the corresponding position of latent image, the vertical light grid line in the primary image can change horizontal line into.Usually, latent image can be by slight inclination banknote and in sight.But the skew in the primary image can use the optical decoder device to decode equally.This is because the grid stroke of primary image is to extend along the biconvex lens line length of demoder in the position that does not hide content, but exists the position that hides content then only to have a cross section.When checking by demoder, this difference can make hidden image more brighter than visual image.
Concerning above-mentioned all image encode methods and synthetic coded image thereof, their total modes are that they have all comprised deviation with the cyclic behaviour (for example locus, tonal density, grating angle) of rule.The cyclic behaviour of rule and the deviation that obtains thus can be determined according to employed coding method and predetermined coding parameter set.These deviations can have with the demoder of one or more coding parameter corresponding characteristic in sight by use.For instance, this one of them coding parameter can be the frequency of the cyclic behaviour of rule.Demoder (no matter being based on hardware or software) then must be configured according to this frequency.For example concerning biconvex lens,, the frequency of the cyclic behaviour of rule is equated with the multiple of lens frequency and even lens frequency by setting the lens frequency.Then, this biconvex lens can serve as content sampling device/amplifier, so that increase the weight of the deviation with the regularization behavior, and these deviations is integrated in the secondary image.
Except above-mentioned optical encoding method, the additive method that can be used in combination with the present invention comprises symbolic representation coding and digital coding method, for example digital watermarking.It should be understood that the characteristic of the coding parameter that is associated with the specific coding method depends in part on the characteristic of coding method at least.The example that is used for the coding parameter of grating method can comprise the orientation (decoding angle) that the resolution or the frequency of image and the lens of decoding must be in when showing authentication image.Another example is the designator that is used for determining specific rasterization process type.For instance, this rasterization process type parameter can be used for determining that it still is that other certain geometric configuratioies are come rasterisation that image is to use point, line, rhombus, elliptical dots.In addition, each rasterization process type can comprise specific characteristic, and these characteristics can be used as coding parameter equally and use.Wherein for instance, these parameters comprise elongation of rhombus and elliptical dots or the like.When checking by demoder, coding parameter can also comprise the value relevant with geometric configuration, position and the orientation of authentication image.In addition, coding parameter can also comprise following variable, for example print resolution or be used for producing from certification mark the duplication factor or the frequency of wallpaper pattern.
Described in the application of ' 943, single encoded image can be concentrated structure from a coding parameter, wherein this coding parameter collection has the one or more coding parameters that produced or selected by the user, and is not the one or more or additional code parameter of being selected or being produced or produce automatically under the situation that does not have the user to import by the user.As mentioned above, single encoded image can also be constructed from a plurality of authentication image, and wherein each image all has the correlative coding parameter set of oneself.In these embodiments, some or all the coding parameter collection that are used for first authentication image can be selected or generation by the user, some or all coding parameters that are used for second authentication image then can be can't help the user and selected or produce, or produce automatically under the situation that does not have the user to import.
The characteristic of coded image can depend on certain object or certain group objects.For example concerning document, the information content or graphical content, the coding parameter that is used for coded image can be according to object identity or characteristic and by unique or partly determine uniquely.The coded image characteristic can also the surrounding environment when producing object or structure/application coded image be determined.
Method of the present invention has strengthened the coding method of the previously known that comprises said method.In the method for the invention, first digital coding image is to use at least one authentication image and the first coding parameter collection and by using first coding method to produce.This first coded image can also comprise first background or source images, in described first background or the source images, has wherein used the coding parameter that first coding parameter concentrates and encodes and embedded authentication image.Then, first digital coding image will be used in combination with the second coding parameter collection and second coding method, so that produce second digital coding image.Second digital coding image can comprise second background or the source images of first digital coding image embedded.Described second digital coding image can preserve, be applied to object or transmit.In addition, described second digital coding image can also be used in combination with another (just the 3rd) coding parameter collection and the 3rd coding method, so that produce the 3rd coded image.It should be understood that in the coding of each grade previous other coded image of level is actual to be " authentication image " used in the process that produces current encoded image.Thus, these inter-coded pictures can be used for certain rank of whole coded image is authenticated.
Fig. 7 is the process flow diagram that produces the method M100 of multilevel coding image according to the present invention.This method starts from S100.At S110, obtained digital authentication image.This authentication image is an image that will produce when the multilevel coding image of decoding final.This digital authentication image can receive from independently supplying side, also can retrieve from storer.As an alternative, this digital authentication image can be created from sketch or be produced by scanning expection graph image.
Authentication image can comprise certification mark, and this mark then can be any visual display, comprising but be not limited to image that digitized image, computing machine generate and from the text string of document process program.By selecting certification mark, can provide about the object source or about user's information.For example, certification mark can comprise the corporate logo image or the Text Flag of government organs.As an alternative or replenish, this certification mark can also comprise the information relevant with the special object that will authenticate.For example, the certification mark that is used for particular document can comprise from the text of document self or with the text of the environmental correclation that produces text.This certification mark can also comprise the Text Flag of handling relevant environment with current authentication.For instance, if authentication method is to carry out when printing particular document, certification mark can comprise the text display of the time and date that will be associated with the document so.As an alternative or supplement, this certification mark can comprise processor or the relevant information of workstation with generation, processing or document printing.
Those of ordinary skills can be from above understanding, and for certain object or certain group objects, authentication image can be unique, and be can be general to certain user.In another alternative, under the situation that has or do not have from user's input, authentication image is to determine by authenticating soft licenser or supplier.
The first coding parameter collection obtains at S115.As discussed previously, when coded image was decoded, coding parameter can be used for determining the characteristic of coded image and/or the outward appearance of authentication image.The same with authentication image, the coding parameter collection can receive or retrieve from storer from independent provider.The coding parameter set that this coding parameter collection also can provide from a plurality of sources that ' 943 application is described.For example, the individual encoded parameter both might be customer-furnished, might not be customer-furnished also.The coding parameter that the user provides can be provided with interactive mode by the user, also can be provided and is stored by software, so that used afterwards.The coding parameter that non-user provides both can be programmed in the encoding software in advance, also can retrieve from data-carrier store.In addition, the coding parameter that provides of non-user can also be calculated according to processing environment or based on selecting at random by software.Wherein for instance, processing environment can comprise time or the characteristic of operating environment (for example producing the characteristic or the sign of the processor of document) that produces coded image.
By comprising the coding parameter that can't be controlled by the user, can prevent the use of specific user's execution error.The coding parameter that one or more non-users provide both can also can be provided with by the keeper of user group by software license or controlled entity setting.In addition, as mentioned above, one or more coding parameters that non-user provides can also be constructed by software under the situation that does not have the user to import.
At S120, wherein can obtain source or primary image according to employed coding method.Described source images is a visual context or the embedded image of encoded authentication image.In addition, this primary image also can be as the blank background image in the coded image 10 of Fig. 1, perhaps can comprise the visual image content in the coded image 110 of Fig. 2, for example pattern or photograph.The same with authentication image, primary image both can receive from independent provider, also can retrieve from storer, can also create with digital form.
At S125, wherein will use the digital authentication image and the first coding parameter collection to construct first digital coding image.As mentioned above, any method that is used for creating from authentication image coded image all is operable.According to described method, encoded authentication image can be embedded in first primary image, so that produce first digital coding image.If print first digital coding image, first primary image can with the naked eye be seen so.But, unless decode with demoder with the characteristic that is associated with the first coding parameter collection, authentication image can't be seen.
First digital encoded image has been represented the first order in the multilevel coding image.The second level then can use the second coding parameter collection that obtains at S130 to construct, and in the ideal case, according to employed coding method, will obtain second primary image at S135.In this second level encoding process, authentication image will be replaced by first coded image, and this image will use second parameter set to come recompile in S140.First coded image through coding can be embedded in second primary image, so that produce second coded image.It should be noted that the method for using in the coding method used in the encoding process of the second level and the first order encoding process may not be identical method.
If print second digital coding image, have only second primary image with the naked eye to see so.If will have collect the appropriate characteristic that is associated with second coding parameter decoder application in second digital coding image, can see first primary image so.But, unless use demoder to decode with the appropriate characteristic that is associated with the first coding parameter collection, authentication image still can't be seen.
This shows,, will need two lenticular units so if use hardware based optical decoder to handle second coded image of decoding.One of them lenticular unit has and the corresponding optical characteristics of the first coding parameter collection, and another lenticular unit then has and the corresponding optical characteristics of the second coding parameter collection.Authentication image then can only just can be in sight by the top that overlaps another lens with in these two lens.This processing both can use two lens that separate fully to realize, also can use as the compound lens of describing in the U.S. Patent application of submitting on June 6th, 2,002 10/165,162 and realize that wherein this application all is incorporated herein by reference at this.
In addition, by obtaining the printed encoded image of digital form, and the image that uses numeral (just based on software) demoder to decode and obtained, second decoded picture of the print form of can decoding equally.Digital decoder can be configured at first to use the second coding parameter collection and with second encoding process in the matched coding/decoding method of second coding method that the uses second level coding of decoding.Then, the output of this process of decoding for the first time will be used as the input of the process of decoding for the second time, and wherein in decoding for the second time, the first coding parameter collection will be used in combination with the coding/decoding method of code used method in suitable second encoding process.And the output of the process of decoding for the second time will comprise authentication image.
In addition, digital decoder also can be used for second digital coding image of never printing is decoded.Second digital coding image then only is used to replace the print image form of being obtained.
As shown in Figure 7, method M100 can comprise the 3rd code level, wherein will obtain the 3rd coding parameter collection in S145, will obtain the 3rd digital primary image alternatively at S150, and will construct the 3rd coded image at S155.What here be readily appreciated that is when printing the 3rd digital picture, to have only the 3rd primary image with the naked eye to see.If with one have collect the appropriate characteristic that is associated with the 3rd coding parameter decoder application in the coded image of being printed, can see second primary image so.By using second demoder (or decoding second time in the digital decoder) and the second coding parameter collection, can allow to check first primary image, in addition, by using the 3rd demoder (or the decoding for the third time in the digital decoder) and the first coding parameter collection, can allow to check authentication image.
At S190, method M100 will finish.But should be appreciated that, in method 100, can comprise additional step.Especially, can use any amount of coding grade here, so that produce final multilevel coding image.But,, be necessary to make coding parameter and coding grade fit in order to realize high quality results.For example, the grating frequency of encoding process can increase progressively along with each grade coding.In certain application of the present invention, this frequency can be doubled along with each code level, guarantees thus to obtain enough details in the before preceding rank, so that keep coded message.
In case constructed digital multilevel coding image, then it can have been stored, is sent to the requesting party or be applied to certain object.As an alternative, digital multilevel coding image also can directly insert digital document.Then, the document that has comprised coded image can be handled further, transmits or print.It should be understood that coded image in document inside with graphics mode coding, its can be printed simultaneously with document thus.When document printing, the multilevel coding image of being printed will produce with its coding form, unless thus by corresponding decoding device, otherwise can't see this image.
In addition, the coded image that has the coding grade more than three to using a plurality of hardware decoder parts to decode, this processing is always unfeasible.But software decoder can be acceptable equally, the multilevel coding image of can decoding simply as the single-stage coded image thus.Shown that in Fig. 8 one can be used illustration coding/decoding method M200 in conjunction with digital encoder.As shown, method M200 is provided with for three stages of digital coded images.But should be appreciated that method M200 is fit to have the digital picture of the code level of any amount equally.
Method M200 starts from S200.At S210, wherein will receive the multilevel coding image.This multilevel coding image both can receive from independent provider, also can retrieve from storer.This multilevel coding image both can be original not printing digital picture, also can be the printed encoded image of the digital form obtained.At S215, wherein will obtain the 3rd coding parameter collection (the coding parameter collection that just in third level encoding process, uses), wherein said the 3rd coding parameter collection both can receive from independent provider, also can retrieve to obtain from storer.
As described in the application of ' 350, some digital decoding method might need to understand embedded the primary image of secondary image.If the coding/decoding method in order to the third level in the decoding multilevel coding image has this demand, can obtain initial pictures at S220 so.At S225, the third level in the multilevel coding image is to use the 3rd coding parameter collected explanations or commentaries sign indicating number, also can use the 3rd digital primary image under the necessary situation, can produce first coding result thus.
Then, first decoded result will be used as the input of second level decoding processing.At S230, wherein will obtain the second coding parameter collection, if necessary, also can obtain second digital primary image at S235.S240 wherein will use decode the second level in the multilevel coding image of the second coding parameter collection, also can use second digital primary image if necessary, so that produce second decoded result.As mentioned above, the coding method of using in the different coding rank can be different.Equally, the coding/decoding method that uses in difference decoding rank also can change, and especially, coding/decoding method is the coding method that is adapted at each grade use.Thus, needn't be equal to coding/decoding method in order to the digital decoding method of decoding second level coded image in order to decoding third level coded image.
Second decoded result can be as the input of first order decoding processing.The first coding parameter collection obtains at S245, if necessary, also can obtain first digital primary image at S250.At S240, wherein will use decode the first order in the multilevel coding image of the first coding parameter collection, if necessary, also can use first digital primary image here, thereby produce the 3rd decoded result, wherein this result has comprised the authentication image of decoded form.At S290, this method finishes.
An aspect of above-mentioned coding/decoding method is: the coded image with a plurality of code level is to use the combination of hardware and software demoder to decode.For example, concerning the printed encoded image with first and second code level of using the generation of optical encoding method, this image can be decoded by the lens decoder that is suitable for the second code level coding parameter and the combination of the digital decoder of the coding parameter that provides first code level.This processing can realize by lenticular unit is oriented on the coded image, can make first coded image visual thus.Concerning first coded image that the scioptics parts are seen, its digital picture is to use the image acquisition equipment of scanner or digital camera and so on to catch.Then, this digital picture is decoded the digital decoder that use provides the coding parameter of first coded image.Decoded result provides then is to be used to encode the authentication image of first coded image.
The operation of Code And Decode method of the present invention can be distributed between several actors, can make it to be particularly suitable for the authentication and the safety approach of layering thus.For example, by limiting the coding parameter that potential decoding entities access is used for certain code level, will prevent this entity complete decoding multilevel coding image here.In hierarchical system, other examiner of lowermost level can have the authority visit only to be used for the decoding parametric of the highest coding grade, and it is enough that this ground floor to object authenticates.
In certain embodiments of the present invention, different entities can be added the safe floor for the coded image process.Each this type of entity can come coded image is carried out recompile with oneself coding parameter collection and/or primary image.So, by a series of generation or transmitting step, can arrive the path of the object such as document, wherein each this type of step all has the recompile that the is associated processing of carrying out at coded image.
Coding method of the present invention can use any automated data processing system to carry out.With reference to figure 9, the data handling system 300 that is used to construct the multilevel coding image can comprise the data processor 310 that links to each other with user interface and printer (not shown) or other equipment, so that image is offered certain object.This data processor 310 can be programmed with the software that is fit to execution method of the present invention.In the illustrated embodiment, data processor 310 can comprise an authentication image module 312, and this module receives or produces certification mark, and reproduces described mark when being necessary, so that form one or more digital authentication image.Described certification mark and/or coding parameter both can receive from the user via user interface 320, also can retrieve by data memory module 318 internally, also can from separate processor or data storage server, receive via the network that is connected with data processor 310 selectivity.
Automated system 300 can also comprise opertaing device 340, and this equipment can be used for control data processor 300 or be installed on the use of the encoding software of data processor 300.This opertaing device 340 can be independent processor, module or a data storage device, and encoding software then can obtain certification mark, coding parameter or the data relevant with processing environment from this equipment.
It should be understood that data handling system 300 both can comprise single processor, also can comprise a plurality of processors and/or server by one or more network interconnections.In addition, the function of the individual modules in the disposal system 300 can also be distributed in a plurality of processors.
With reference to Figure 10, the system 400 that is used for authentication object comprises an encode processor 410 that is configured to produce digital multilevel coding image, and one is configured to decoding processor 430 that digital multilevel coding image is decoded.This encode processor 410 can comprise authentication image module 412, coding parameter module 414 and coding module 416, and in all these modules, wherein any one module or all modules all can communicate with encoded information database 440.Coding module 416 is by adaptive or the coding parameter collection that uses authentication image that authentication image module 412 provides and coding parameter module 414 to provide is provided produces the multilevel coding image.Coding module 416 can also use primary image and at different code level embedded coding images.To authentication image or be included in wherein indication, and any primary image and/or some or all coding parameters, these information both can receive from encoded image requester 450, and wherein this requesting party is adapted to an interface is provided between user and encode processor 410.In addition, to authentication image or be included in wherein indication, and any primary image and/or some or all coding parameters, these information also can be retrieved from encoded information database 440 or other data memory modules and obtain.
Coding module 416 can be kept at the authentication image and the coding parameter collection of each code level in the encoded information database 440, so that use these information when afterwards expection being found that the digital picture of multilevel coding image is decoded.Coding module 416 can also be kept at the multilevel coding image in the database 440, and impels the multilevel coding image is put on certain object, and/or coded image is returned to encoded image requester 450.In certain embodiments, the multilevel coding image can be embedded in the digital document, and encoded image requester 450 can be preserved or return to the document then then.
Decoding processor 430 can comprise decoding request interface 432, coded message module 434 and decoder module 436.Decoding request interface 432 is adapted to and receive requires expection is comprised the request that the digital picture of multilevel coding image is decoded and/or authenticated.432 of request interfaces of decoding can be configured to 460 these requests of reception from authentication request side.Any one or all coding parameter that this request can comprise digital multi-level coded image and be used to produce one or more code level of coded image.It should be understood that digital multilevel coding image can be a unprinted image that produces with digital form, in addition it also can be one by using scanner, digital camera or other digital pictures to obtain the digital picture that is hunted down that equipment 462 obtains.
Decoding processor 430 can also comprise coded message module 434, and this module is configured to obtain coding parameter, and obtains where necessary and be used for producing the multilevel coding image that the expection meeting is found in the digital picture that is associated with request.Some or all coding parameters and/or primary image both can be retrieved from encoded information database 440, and also can derive from the information that receives with the decoding request obtain.434 of coded message modules can be assembled the needed information of each code level of decoding, and it is delivered to decoder module 436.This decoder module 436 can be adapted to carries out multistage coding/decoding method mentioned above, so that any one or all the decoding rank in the multilevel coding image of decoding in order.After having passed through each decode phase, authentication request side both can be stored, be returned to decoded result, also can offer the requesting party that another has been authorized to.
Decoder module 436 can also also be dealt into certified processor 470 with the decoded result from certain decode phase, so that compare with desired decoded result.Certified processor 470 can comprise the interface decoder module 472 that is adapted to from decoding processor 430 reception decoded results.Interface module 472 can also be adapted to from the decoding processor Receiving coded information or retrieve this type of information from encoded information database.Coded message can comprise multilevel coding image authentication image and/or any primary image of encoding that is used for expection.These images can be used by an authentication module 474, and wherein this module is adapted to the coding result that is received from decoding processor 430 is compared with the decoded result of expection.Especially, this authentication module can be adapted to compares authentication image with final decoded result, so that the decoded digital picture of authentication.
Authentication module 474 can also be adapted to and extract content from decoded result, and then, this content can be compared with Valuation Standard or the content of directly extracting from the digital document of having used the multilevel coding image.This authentication module 474 can comprise OCR software or bar-code interpretation software, and these softwares then can be used for from decoded result and/or digital document information extraction.
It should be understood that, encode processor 410, decoding processor 430 and certified processor 470 are actual can be independent data processor or server, and they also can be distributed in via network 420 and carry out in a plurality of data processors of selective communication in addition.Be also to be understood that in addition encode processor 410 and decoding processor 430 can comprise a plurality of processors, and the Code And Decode of different stage is handled and can be carried out on identical or different processor.In a particular embodiment, the coding in each stage is all carried out by different processor.So then allow to keep the coded message of each rank use by different coding entities.
To the general aspect of the possible embodiment of technical method of the present invention be described now.The distinct methods and the operating system embodiment of technology of the present invention have been described hereinbefore.What can expect is, the system of the present invention or the part of system of the present invention are to adopt the form of " processor " of multi-purpose computer and so on.Term used herein " processor " can be understood as that it is to have comprised at least one processor that uses at least one storer.Described at least one memory stores be one group of instruction.These instructions then can be forever or temporarily are kept in one or more storeies of processor.Processor is carried out the instruction of preserving in one or more storeies, so that data are handled.This instruction group then can comprise the different instruction of carrying out one or more particular tasks, for example above describing in process flow diagram of task.The instruction set that is used to carry out particular task can be characterized by program, software program or only be characterized by software.
As mentioned above, processor comes deal with data by the instruction that execution is kept in one or more storeies.Wherein for instance, described data processing both can be made response to the given order of one or more users of described processor, also can respond first pre-treatment, can also respond another processor and/or the given request of other inputs.
As discussed previously, being used to implement processor of the present invention can be multi-purpose computer.But, above-mentioned processor can also use any in the multiple other technologies, this is comprising special purpose computer, the computer system that has comprised microcomputer, small-size computer or large scale computer, the microprocessor of having programmed, microcontroller, peripheral integrated circuit components, CSIC (user's special IC), ASIC (special IC) or other integrated circuit, logical circuit, digital signal processor, the programmable logic device of FPGA, PLD, PLA or PAL and so on, or other any equipment or the apparatuss that can implement treatment step of the present invention.
It should be understood that the storer of processor and/or processor needn't be in same geographic location physically in order to put into practice inventive method mentioned above.That is to say that each processor of Shi Yonging can be in different geographic position with storer and can link to each other in the present invention, so that communicate with any suitable communication mode.Be also to be understood that in addition each processor and/or storer can comprise the different physical pieces of equipment.Correspondingly, it is the individual equipment that is in certain position that processor there is no need, and it is another specific installation that is in another position that storer also there is no need.That is to say that what can expect is that processor can be two equipment that are in two different physical locations here.These two distinct devices can adopt any suitable mode to connect.In addition, storer can comprise two or more memory portion at two or more physical locations.
In order to further specify, above-mentioned processing is carried out by different assemblies and different memory.But should be appreciated that according to another embodiment of the invention, the processing of being carried out by two different assemblies also can be carried out by an independent assembly as mentioned above.In addition, the processing of being carried out by different assemblies as mentioned above also can be carried out by two different assemblies.Equally, according to another embodiment of the invention, the memory stores of being carried out by two different memory portion also can partly be carried out by single memory as mentioned above.In addition, the memory stores of partly being carried out by a different memory as mentioned above also can be assigned to carry out by two memory section.
In addition, various technical methods all can be used for providing communication between different processor and/or storer, and these technical methods can also be used to allow processor of the present invention and/or storer and any other entity to communicate; That is to say, can obtain more multiple instruction or visit and the storage of use remote memory thus.Be used to provide the technology of this communication can comprise network, the Internet, in-house network, extranet, LAN, Ethernet, communication network (for example honeycomb or wireless network) or any client server system that communication is provided.These communication technologys can be used any appropriate protocol, for example TCP/IP, UDP or OSI.
As mentioned above, in processing of the present invention, used one group of instruction.This group instruction can be adopted the form of program or software.Described software can adopt the form such as system software or application software.In addition, for instance, this software can also adopt the form of stand-alone program set, is in than the form of the program module of large program inside or the form of a part of program module.Employed software can comprise the modularized program design of having adopted the Object oriented programming form.This software can inform what kind of processing is data carried out to processor.
It should be understood that the instruction used or instruction set are to adopt any appropriate format for the processor reading command in embodiments of the present invention and operation.For example, the instruction that forms certain program can be adopted the form of suitable programming language, and wherein said programming language will convert machine language or object identification code to, so that allow one or more processors to read these instructions.That is to say, call the turn that the writing line of program design code or source code is to use compiler, assembler or interpreter and is transformed into machine language at certain specific program design language.Described machine language is binary-coded machine instruction, and these instructions are that certain processor is peculiar, that is to say, described instruction is that certain computing machine is peculiar.This computing machine is then understood machine language.
Different embodiment according to the subject invention, any suitable programming language all is operable.As exemplary description, employed programming language can comprise assembly language, Ada, APL, Basic, C, C++, C#, COBOL, dBase, Forth, Fortran, Java, Modula-2, Pascal, Prolog, REXX, Visual Basic and/or Java Script.In addition, the programming language of instruction that here will single type or single type is used in combination with system and method operation of the present invention.In contrast, as required or the expection, any amount of distinct program design language all is operable.
In addition, instruction and/or the data of using in implementing process of the present invention can be used any compression or encryption technology or algorithm as required.Encrypting module can be used to enciphered data.In addition, for instance, file or other data can use suitable deciphering module to decipher.
As mentioned above, as illustration, the present invention can adopt the form of the processor that comprises computing machine or computer system to realize, wherein said processor comprises at least one storer.Can be contemplated that concerning the permission computer operating system such as software is carried out the instruction set of aforesaid operations these instruction set can be comprised among multiple medium or medium any as required.In addition, the data of being handled by instruction set can be included among multiple medium or medium any equally.That is to say that concerning the particular medium of the instruction set that is used for keeping using in the present invention and/or data, just the storer of processor, described medium can adopt any form in multiple physical form or the transmission.As illustration, this medium can adopt any medium or the data source that can be read by processor of the present invention of paper spare, lantern slide made of paper, compact disk, magnetic stripe, laser card, smart card, processor chips, memory chip, DVD, integrated circuit, hard disk, floppy disk, CD, mountain village card, tape, RAM, ROM, PROM, EPROM, circuit, cable, optical fiber, communication channel, satellite transmits or other remote transmission and other.
In addition, the one or more storeies that use in implementing processor of the present invention can adopt any in the various ways, so that allow storer to come hold instruction, data or other information as required.Thus, this storer can adopt the form of database to keep data.This database can adopt the file arrangements of any expection, and for example flat file is arranged or relational database is arranged.
In method and system of the present invention, wherein can use multiple " user interface " to allow the user and one or morely be used to implement processor of the present invention and connect.User interface used herein has comprised any hardware, software or the software and hardware set of using for allowing user and processor to carry out mutual processor.For instance, user interface can adopt the form of dialogue screen.In addition, user interface can also comprise that mouse, touch-screen, keyboard, phone (landline, honeycomb or wireless), voice reader, speech recognition device, dialogue screen, menu box, tabulation, checkbox, trigger switch, button or other any permission users receive the information relevant with processor operation and/or the equipment of information is provided for processor in processor processing instruction collection.Correspondingly, user interface can be anyly to provide the equipment of communicating by letter between user and processor.The user can adopt order, data to select or the form of some other input via the information that user interface offers processor.
As mentioned above, user interface can be used by the processor of execution command collection, so that processor is handled about user's data.In general, processor carries out alternately with the user by using user interface, so that transmit or receive the information from the user.But what can expect is that some embodiment of system and a method according to the invention, human eye are actually and there is no need to carry out mutual with the employed user interface of processor of the present invention.In contrast, what can expect is that user interface of the present invention can carry out alternately with another processor rather than human user, just transmits or reception information.Correspondingly, described other processors can be characterized by the user.Be also contemplated that in addition it is mutual that the user interface of Shi Yonging can carry out the part with other one or more processors in the system and method for the present invention, still carry out the part alternately simultaneously with human user.
What those skilled in the art were easy to expect is that the present invention allows to use widely and use.Under the situation that does not break away from the spirit and scope of the invention, except the embodiments described herein, a lot of embodiment of the present invention and accommodation mode and numerous variation, modification and equivalence all can obviously be found out from the present invention and previous the description or can be by its reasonable proposal.
Though illustration and described illustrative embodiments of the present invention should be appreciated that the present invention is not limited to structure disclosed herein hereinbefore.Under the situation that does not break away from essence or base attribute, the present invention can adopt other particular form to realize.
Claims (31)
1. method that is used to produce digital multilevel coding image, this method comprises:
Obtain digital authentication image;
Obtain the first coding parameter collection that has comprised one or more coding parameters;
Use first coding method, digital authentication image and the first coding parameter collection to construct first coded image;
Obtain the second coding parameter collection that has comprised one or more coding parameters; And
Use second coding method, first coded image and the second coding parameter collection to construct second coded image,
Wherein second coded image can use the demoder with at least a portion coding parameter corresponding characteristic of concentrating with second coding parameter to decode, so that show first coded image, and first coded image can use the demoder that has with at least a portion coding parameter corresponding characteristic of the first coding parameter collection to decode, so that show authentication image.
2. according to the automatic mode of claim 1, the operation of wherein constructing first coded image comprises the authentication image coding and is embedded in first primary image.
3. according to the automatic mode of claim 1, the operation of wherein constructing second coded image comprises first coded image is embedded in second primary image.
4. according to the process of claim 1 wherein that first coding method is identical with second coding method.
5. according to the automatic mode of claim 1, also comprise:
Obtain the 3rd coding parameter collection that has comprised one or more coding parameters; And
Use the 3rd coding method, second coded image and the 3rd coding parameter collection to construct the 3rd digital coding image,
Wherein the 3rd digital coding image can use the demoder that has with at least a portion coding parameter corresponding characteristic of the 3rd coding parameter collection to decode, so that show second coded image.
6. method that is used for decoded digital multilevel coding image, wherein said image produces by using first coding method, authentication image and the first coding parameter collection and constructing first digital coding image and use second coding method, first coded image and the second coding parameter collection to construct second digital coding image subsequently, and this method comprises:
Use at least a portion of the second coding parameter collection, second digital coding image of decoding, so that show first digital coding image; And
Use at least a portion of the first coding parameter collection, first digital coding image of decoding, so that show authentication image.
7. according to the method for claim 6, wherein should be applied to an object by numeral multilevel coding image, and the operation of wherein second digital coding image being decoded comprises:
First lenticular unit is placed the multilevel coding image top that is employed, so that can check the multilevel coding image that is employed by these parts, wherein this first lenticular unit has and the corresponding optical characteristics of at least a portion of the second coding parameter collection.
8. according to the method for claim 7, wherein first lens are biconvex lens parts, and these parts have comprised evenly spaced a plurality of lenticule, so that the lens frequency is set, and wherein the first coding parameter collection comprises a coding frequency, and this coding frequency is the multiple of lens frequency.
9. according to the method for claim 7, the operation of first digital coding image of wherein decoding comprises:
With above first lenticular unit places second lenticular unit under the situation of registration the multilevel coding image that is employed mutually, can check the multilevel coding image that is employed by described second lenticular unit thus, wherein said second lenticular unit has and the corresponding optical characteristics of at least a portion of the first coding parameter collection.
10. according to the method for claim 9, wherein second lenticular unit is a biconvex lens parts, these parts have comprised a plurality of evenly spaced lenticules, so that a lens frequency is set, the wherein said second coding parameter collection has comprised the coding frequency as coding parameter, and this coding frequency then is the multiple of lens frequency.
11. method according to claim 6, wherein digital multilevel coding image is applied to an object, and the operation of first and second digital coding images of decoding is by many parts decoder lens being placed the multilevel coding image top that is employed carry out, described many parts demoder comprises first lenticular unit that has with the corresponding optical characteristics of at least a portion of the second coding parameter collection, and has second lenticular unit with the corresponding optical characteristics of at least a portion of the first coding parameter collection.
12. method according to claim 11, wherein first lenticular unit is a biconvex lens parts, these parts have comprised evenly spaced a plurality of lenticule, so that set up the first lens frequency, second lenticular unit is a biconvex lens parts, these parts have comprised a plurality of evenly spaced lenticules, so that set up the second lens frequency, wherein at least a portion of the first coding parameter collection has comprised the first coding frequency, this frequency is the multiple of the second lens frequency, and at least a portion of the second coding parameter collection has comprised the second coding frequency, and this frequency is the multiple of the first lens frequency.
13. according to the method for claim 6, wherein the operation that second digital coding image is decoded is to use digital decoder to carry out, this operation comprises:
Receive digital multilevel coding image;
Obtain at least a portion of the second coding parameter collection; And
At least a digital decoding method has been applied to use the digital multilevel coding image of at least a portion that second coding parameter concentrates, so that produce first decoded result.
14. according to the method for claim 13, wherein the operation that first digital coding image is decoded is to use digital decoder to carry out, this operation comprises:
Obtain at least a portion of the first coding parameter collection; And
At least a digital decoding method has been applied to use first decoded result of at least a portion that first coding parameter concentrates, so that produce second decoded result.
15. according to the method for claim 6, wherein
Numeral multilevel coding image is applied to an object,
The operation of second digital coding image of decoding comprises first lenticular unit is placed the multilevel coding image top that is employed, so that can check the multilevel coding image that is employed by first lenticular unit, wherein first lenticular unit has and the corresponding optical characteristics of at least a portion of the second coding parameter collection, and
The operation of first digital coding image of decoding is to use digital decoder to carry out, and this operation comprises:
Obtain the digital picture of the first digital decoding image of first lenticular unit decoding,
Obtain at least a portion of the first coding parameter collection, and
The digital picture that has been applied to use at least a portion of the first coding parameter collection to obtain at least a digital decoding method is so that produce decoded result.
16. a system that is used to construct digital multilevel coding image, this system comprises:
Authentication image module, this module are adapted to obtains digital authentication image;
Coding parameter module, this module are adapted to a plurality of coding parameter collection of set, and wherein each coding parameter collection all comprises the coding parameter that at least one uses in the process of coded digital image; And
The coding module that communicates with authentication image module and coding parameter module, this coding module is adapted to the use first coding parameter collection and first coding method is applied to authentication image, so that coded image is provided, and with coded image recompile pre-determined number, so that produce digital multilevel coding image, the coding each time of described coded image all be to use can be identical with first coding method coding method and different coding parameter collection finish.
17. according to the system of claim 16, wherein coding module also is adapted to the primary image that makes the authentication image that coded image comprises coding form embedded.
18. according to the system of claim 16, wherein authentication module, coding parameter module and coding module and data memory module communicate, this data memory module then is configured to authentication storage image and a plurality of coding parameter collection.
19. according to the system of claim 18, wherein data memory module also is configured to store digital multilevel coding image.
20. the system according to claim 16 also comprises:
Be used for digital coding image is applied to the device of object.
21. according to the system of claim 16, wherein authentication image module is adapted to from one group of certification mark and constructs digital authentication image.
22. according to the system of claim 16, wherein the coding parameter module is adapted to from encoded image requester and receives at least one coding parameter.
23. according to the system of claim 16, wherein the coding parameter module be adapted to from the information of object association obtain at least one coding parameter.
24. according to the system of claim 16, wherein should to as if document, and the information that is associated with object is the document process environment.
25. system that is used for decoded digital multilevel coding image, wherein this image is to produce with the recompile that produces coded image and in order coded image is carried out pre-determined number by using the first coding parameter set pair digital authentication image to encode, each recompile rank all is to use different additional code parameter sets to finish, final recompile rank will provide digital multilevel coding image, and this system comprises:
Coded message module, this module are adapted to all additional code parameter sets that obtain the first coding parameter collection and be used to produce digital multilevel coding image; And
The decoder module that communicates with the coded message module, this decoder module is adapted at least a digital decoding method is applied to digital multilevel coding image, and described at least a digital decoding method can begin from final recompile rank by using other appropriate coding parameter of each recompile level to come repeatedly with reverse order each recompile rank of decoding.
26. the system according to claim 25 also comprises:
Decoding request module, this module are adapted to the request that receives digital multilevel coding image and require decoded digital multilevel coding image from the decoding requesting party.
27. the system according to claim 25 also comprises:
Digital picture is obtained equipment, and this equipment is adapted to and obtains digital multilevel coding image from the multilevel coding image that is applied to object.
28. one kind is used for the system that the object of multilevel coding image authenticates has been used in expectation, wherein this image is by using the first coding parameter collection to come the coded digital authentication image to produce coded image and in order coded image to be carried out the recompile of pre-determined number and produced, each recompile rank all is to use different additional code parameter sets to finish, final recompile rank then provides digital multilevel coding image, and this system comprises:
Encoded information database, this database are configured to all additional code parameter sets of storing digital authentication image, the first coding parameter collection and being used to produce digital multilevel coding image; And
Carry out the decoding processor of selective communication with encoded information database via first network, this decoding processor is received the request that require decoded digital test pattern via second network from the decoding requesting party by adaptive, receive this digital test image, retrieval is used to produce the coding parameter collection of digital multilevel coding image from encoded information database, and digital test image used at least a coding/decoding method, described at least a coding/decoding method will be repeated repeatedly, the number of times that wherein said multiplicity equals again coded image to be encoded adds 1, produces decoded result thus.
29. the system according to claim 28 also comprises:
Carry out the certified processor of selective communication with decoding processor and encoded information database via first network, this certified processor is adapted to key numbers authentication image from encoded information database, reception is from the decoded result of decoding processor, and decoded result compared with the certification mark in appearing at digital authentication image, thereby determine authentication result.
30. according to the system of claim 29, wherein certified processor also is configured to via the 3rd network authentication result is sent to the authentication result requesting party.
31. according to the system of claim 30, wherein first, second with the 3rd network in any one can be the network identical with one or two network of remainder.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103608763A (en) * | 2011-06-22 | 2014-02-26 | 惠普发展公司，有限责任合伙企业 | Systems and methods for tracing the source of printed pages |
| CN106060561A (en) * | 2010-04-13 | 2016-10-26 | Ge视频压缩有限责任公司 | Decoder, array reconstruction method, coder, coding method, and data flow |
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-
2005
- 2005-08-05 CN CNA2005800308948A patent/CN101124589A/en active Pending
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| US11910030B2 (en) | 2010-04-13 | 2024-02-20 | Ge Video Compression, Llc | Inheritance in sample array multitree subdivision |
| CN103608763A (en) * | 2011-06-22 | 2014-02-26 | 惠普发展公司，有限责任合伙企业 | Systems and methods for tracing the source of printed pages |
| CN115333735A (en) * | 2022-10-11 | 2022-11-11 | 浙江御安信息技术有限公司 | Safe data transmission method |
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