CN104010195A - Anti-copying coded image, anti-copying coded image system and application - Google Patents
Anti-copying coded image, anti-copying coded image system and application Download PDFInfo
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- CN104010195A CN104010195A CN201410108074.7A CN201410108074A CN104010195A CN 104010195 A CN104010195 A CN 104010195A CN 201410108074 A CN201410108074 A CN 201410108074A CN 104010195 A CN104010195 A CN 104010195A
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Abstract
The invention relates to an anti-copying coded image. The anti-copying coded image comprises a coded image body arranged on a base image of printed matter, and a digital watermark added to the coded image body. Coding information of the printed matter is contained in the coded image, and a semi-fragile digital watermark technology is adopted for the digital watermark. The invention further provides an anti-copying coded image system and application of the anti-copying coded image system. Through the anti-copying coded image, the anti-copying coded image system and the application, not only can the channel conflict prevention function and the source tracing function of printed matter be achieved, but also the anti-fake function of the printed matter can be achieved.
Description
technical field
The present invention relates to image code domain, relate in particular to a kind of anti-replica code image, anti-replica code picture system and application based on digital watermark technology and coding techniques.
background technology
Because Quick Response Code, color code can be stored more information in very little plane, and utilize the equipment such as mobile phone, scanner just can read fast the information in Quick Response Code, color code, therefore, existing commodity are used the labels such as Quick Response Code, color code to indicate the information of commodity conventionally.But along with scientific and technical fast development, counterfeit merchandise and commodity on these labels be very easy to, this just makes the more and more true and false of indistinguishable commodity of consumer, to consumer, has brought very large inconvenience, also to market, has caused very large puzzlement.Therefore, study and a kind ofly can prevent that the coded image copying becomes the focus of the research of professional in recent years.
summary of the invention
The invention reside in a kind of anti-replica code image, anti-replica code picture system and application are provided, that can realize printed matter prevents falsifying and the function of tracing to the source, but also can realize the antiforge function to printed matter.
For reaching above-mentioned purpose, the invention provides a kind of anti-replica code image, comprise the coded image on the base map of being located at printed matter and add the digital watermarking in coded image to, containing the coded message of printed matter in coded image, digital watermarking adopts Semi-fragile digital watermarking.
In one embodiment of the invention, coded image can or form by image block coded system for bar code, Quick Response Code, color code.
In one embodiment of the invention, image block coded system is utilized the chromatic characteristic coding of image, can be for initiatively encoding or passive coding, first described active coded system for being divided into image N*M piece, according to the coded message of design in advance, each piecemeal of image is carried out to active accommodation again, if needing the coded message of adding is 1, change the average gray of piecemeal, brightness, contrast or acutance etc., make it to be greater than threshold value, if needing the coded message of adding is 0, change the average gray of piecemeal, brightness, contrast or acutance etc., make it to be less than threshold value, by that analogy, until N*M piece all completes Image Adjusting by the coding of prior design, passive coding does not carry out any change to image, image is divided into after N*M piece, calculate respectively average gray, brightness, contrast, acutance of each piecemeal etc., and utilize these information to calculate each block encoding, finally obtain the image coding information of N*Mbit.
In one embodiment of the invention, identical printed matter, corresponding to different coded images, is added with different or identical digital watermarking in different coded images; Or identical printed matter, corresponding to identical coded image, is added with same or different digital watermarking in identical coded image.
The present invention also proposes a kind of anti-replica code picture system, comprise remote server, remote data base, image coding module, digital watermarking interpolation module, image decoding module, digital watermarking detection module, client and sense terminals, wherein remote server is for the request of customer in response end and sense terminals; Remote data base is for coded message, printed matter information, detection history information and the digital watermark information of memory print product; The formation coded image of encode on the base map of image coding module for the printed matter that sends in client; Digital watermarking interpolation module forms anti-replica code image for adding digital watermarking to the coded image forming; Image decoding module decodes to obtain decoded information for the coded image of anti-replica code image that sense terminals is read; Digital watermarking detection module is for detection of the digital watermarking in anti-replica code image, and carries out the true and false of verifying digital watermark.
In one embodiment of the invention, remote data base can index by the coded image of printed matter printed matter information, detection history information and digital watermark information; Wherein, printed matter information comprises the printed matter information relevant with printed matter such as title, the place of production, production time, the term of validity, price of printed matter; Digital watermark information comprises the watermark parameters information such as the watermark size, watermark location, watermark content, watermark strength of coded image; Detection history information comprises the detection information such as the detected number of times of coded image, detection time, detection site, checkout equipment, testing result.
In one embodiment of the invention, digital watermarking is added the discontinuity zone of module in coded image and is added digital watermarking.
The present invention further proposes a kind of application of anti-replica code image, comprise the following steps: (1) Image Coding, the base map of the printed matter that remote server reception client sends over, by encoding software, on the base map of printed matter, encode and form coded image, then remote server stores the information of printed matter and coded message in remote data base into; (2) add digital watermarking, add software on coded image, add digital watermarking and form anti-replica code image by digital watermarking, remote server stores digital watermark information in remote data base into; (3) image decoding, user reads anti-replica code image by sense terminals, and anti-replica code image is sent to remote server, remote server is decoded and is obtained decoded information the coded image in anti-replica code image by decoding software, and judge according to decoded information whether printed matter is registered, and whether inquiry request is legal; (4) detect digital watermarking, remote server is transferred the digital watermark information in remote data base on the basis that printed matter has been registered and inquiry request is legal, and compares with the digital watermark information detecting, the checking true and false; (5) send printed matter testing result, the authenticity verification information that remote server is transferred coded message, printed matter information and printed matter in remote data base sends to user.
In one embodiment of the invention, the decode procedure of the decoding software of image decoding process is: in image decoding process, the decode procedure of decoding software is: (1) obtains the coded image in anti-replica code image; (2) coded image is carried out to geometric correction; (3) coded image is divided into N*M piecemeal; (4) calculate average gray, brightness, contrast or the acutance of each piecemeal, compare with threshold value, the average gray of piecemeal, brightness, contrast or acutance be greater than threshold value piecemeal be encoded to 1, be less than threshold value piecemeal be encoded to 0, obtain the data of N*Mbit.
In one embodiment of the invention, user can inquire about printed matter information in remote server, realizes the anti-channel conflict of printed matter and traces to the source; Remote server can be added up all detection history information of printed matter, for enterprise marketing and the reference of cracking down on counterfeit goods, remote server is according to the detected detection information such as number of times, detection time, detection site, checkout equipment and testing result of coded message index printed matter, when the detected number of times of printed matter is for once, tell this printed matter of user for detecting for the first time; When the detected number of times of printed matter is twice, remote server sends to user by detection information such as the printed matter indexing primary detection time, detection site and checkout equipments; When the detected number of times of printed matter surpasses twice, tell that the detected number of times of user's printed matter is more, careful use.
Compared to prior art, anti-replica code image of the present invention, anti-replica code picture system and application, that not only can realize printed matter prevents falsifying and the function of tracing to the source, but also can realize the antiforge function to printed matter.And coded image and digital watermarking overlap in the plane and can reduce the space that anti-replica code image takies, and increase operation rate; In the shading of coded image, with digital watermarking, make coded image itself also can prevent copying; Coded image and digital watermarking be in conjunction with setting, can also reduce the operating procedure in the application process of anti-replica code image.
Accompanying drawing explanation
Figure 1 shows that the structural representation of anti-replica code image of the present invention.
Figure 2 shows that the structural representation with coded image region of anti-replica code image of the present invention.
Figure 3 shows that the structural representation of anti-replica code image of the present invention based on Quick Response Code stack digital watermarking.
Figure 4 shows that anti-replica code image of the present invention adds the structural representation of digital watermarking on Quick Response Code.
Figure 5 shows that the structural representation of anti-replica code image of the present invention based on active coded image block encoding mode.
Figure 6 shows that the active coded image coding piecemeal schematic diagram of anti-replica code image of the present invention.
Figure 7 shows that the structural representation of anti-replica code image of the present invention based on passive coding.
Figure 8 shows that the structural representation of anti-replica code picture system of the present invention.
Figure 9 shows that the applicating flow chart of anti-replica code image of the present invention.
Figure 10 shows that anti-replica code image watermark checking schematic flow sheet of the present invention.
Figure 11 shows that making and the testing process schematic diagram of anti-replica code image of the present invention.
Figure 12 shows that anti-replica code image of the present invention based on smart mobile phone applicating flow chart.
Figure 13 shows that the flow chart of the decode procedure in anti-replica code image applications process of the present invention.
Embodiment
For further setting forth the present invention, reach technological means and the effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing and preferred embodiment, embodiment, structure, feature and effect thereof to proposing according to the present invention, be described in detail as follows.
Figure 1 shows that the structural representation of anti-replica code image of the present invention; Figure 2 shows that the structural representation with coded image region of anti-replica code image of the present invention.Please refer to Fig. 1 and Fig. 2, anti-replica code image of the present invention comprises the coded image 2 on the base map 1 of being located at printed matter and adds the digital watermarking 3 in coded image 2 to.The coded message that contains printed matter in coded image 2, and digital watermarking 3 adopts semi-fragile watermarking.Semi-fragile watermarking is a kind ofly by computer, predefined character, icon, image digital information to be converted to binary data and be hidden in image, when bootlegging or printing, the binary data embedding can be subject to heavy damage, thereby the integrality of semi-fragile watermarking will change.Therefore, the coded image 2 in anti-replica code image of the present invention not only can realize to printed matter prevent falsifying and the function of tracing to the source, and digital watermarking 3 can also realize the antiforge function to printed matter.And digital watermarking 3 is added in coded image 2, but not arrange in addition, both are incorporated into one, thereby, on the one hand, coded image 2 and digital watermarking 3 overlap in the plane and can reduce the space that anti-replica code image takies, and improve plane utilance; On the other hand, both can also reduce anti-replica code image of the present invention operating procedure in use in conjunction with setting; Moreover, in the shading of coded image 2, with digital watermarking 3, make coded image 2 itself also can prevent copying, thereby can further strengthen the antiforge function of anti-replica code image of the present invention.
Figure 3 shows that the structural representation of anti-replica code image of the present invention based on Quick Response Code stack digital watermarking; Figure 4 shows that anti-replica code image of the present invention adds the structural representation of digital watermarking on Quick Response Code.Please refer to Fig. 1, Fig. 3 and Fig. 4, coded image 2 can be existing conventional bar code, Quick Response Code or color code, and digital watermarking 3 is for adding the semi-fragile watermarking in corresponding Quick Response Code or color code to.
Figure 5 shows that the structural representation of anti-replica code image of the present invention based on active coded image block encoding mode; Figure 6 shows that the active coded image coding piecemeal schematic diagram of anti-replica code graphical design of the present invention; Figure 7 shows that the structural representation of anti-replica code image of the present invention based on passive coding.Please refer to Fig. 5 to Fig. 7, preferred, coded image 2 is for to form by image block coded system, image block coded system is utilized the chromatic characteristic coding of image, can be for initiatively encoding or passive coding, first described active coded system is divided into image N*M piece, according to the coded message of design in advance, each piecemeal of image is carried out to active accommodation again, if needing the coded message of adding is 1, change the average gray of piecemeal, brightness, contrast or acutance etc., make it to be greater than threshold value, if needing the coded message of adding is 0, change the average gray of piecemeal, brightness, contrast or acutance etc., make it to be less than threshold value, by that analogy, until N*M piece all completes Image Adjusting by the coding of prior design, passive coding does not carry out any change to image, image is divided into after N*M piece, calculate respectively average gray, brightness, contrast, acutance of each piecemeal etc., and utilize these information to calculate each block encoding, finally obtain the image coding information of N*Mbit, by the distinctive image block coded system of the present invention, form coded image like this, can further increase the anti-print effect of anti-replica code image of the present invention.
In the present invention, during for the negligible amounts of printed matter, such as some luxury goods, each part printed matter in identical printed matter is all corresponding to an independent different coded image 2, in each different coded image 2, be added with different digital watermarking 3, form the printed matter of product watermark more than many yards; More for printed matter quantity, false proof situation of having relatively high expectations, such as medicine, high-grade tobacco and wine etc., can make each the part printed matter in identical printed matter use different coded image 2, in different coded images 2, be added with identical digital watermarking 3, form the printed matter of many yards of watermarks of product; Quantity for printed matter is more, the situation that false proof requirement is lower, such as books, food etc., can make each the part printed matter in identical printed matter all use identical coded image 2, in identical coded image 2, be added with identical digital watermarking 3, form the printed matter of a product one yard one watermark; It will be appreciated by those skilled in the art that, while being printed by a plurality of printing houses for printed matter or when printed matter will circulate in a plurality of areas, can be so that printed matter has identical coded image 2, and for different printing houses corresponding to different digital watermarkings, or the printed matter circulating for different regions is corresponding to different digital watermarkings, form the printed matter of the many watermarks of a product one yard, when finding fake products, can find that rapidly the source of fake products is which printing house or area according to digital watermark information like this.
The coded message containing in coded image 2 can be in database index printed matter information, watermark parameters information and detection history information.Same class printed matter is used one and same coding image, or each part printed matter is used different coded images; When same class printed matter is used same coded image, the historical detection statistics of this coded image index printed matter information, watermark parameters information and this commodity; When each part printed matter all carries out different codings, this coded message is the information such as the detected number of times of a certain printed matter of index, detection time, detection site, checkout equipment simultaneously also, for user, tell truth from falsehood, for example, when the detected number of times of printed matter is for once, tell this printed matter of user for detecting for the first time; When the detected number of times of printed matter is twice, remote server can send to user to carry out reference the detection information such as the printed matter indexing primary detection time, detection site and checkout equipment; When the detected number of times of printed matter surpasses twice, tell that the detected number of times of user's printed matter is more, please the careful selection of user.And watermark information is used for verifying the coded image true and false, computer converts predefined character, icon, image digital information in the digital picture that binary data is hidden in printed matter to, when bootlegging printed matter, the digital information embedding can be subject to heavy damage, cannot be by the integrity detection of fetch equipment.
Figure 8 shows that the structural representation of anti-replica code picture system of the present invention.Please refer to Fig. 8, anti-replica code picture system of the present invention, comprises remote server, remote data base, image coding module, digital watermarking interpolation module, image decoding module, digital watermarking detection module, client and sense terminals.
Wherein, remote server, for the request of customer in response end and sense terminals, is realized communication connection with client, sense terminals and remote data base.
Remote data base is for coded message, printed matter information, digital watermark information and the detection history information of memory print product.Wherein coded message refers to coding that can unique identification printed matter, can be for index printed matter information, digital watermark information and detection history information; Printed matter information refers to the printed matter information relevant with printed matter such as the title, the place of production, production time, the term of validity, price of printed matter; Digital watermark information refers to the watermark parameters information such as the watermark size, watermark location, watermark content, watermark strength of coded image; Detection history information comprises when user detects printed matter, the information such as number of times, detection time, detection site, checkout equipment and testing result that coded image is detected.
The formation coded image of encode on the base map of image coding module for the printed matter that sends in client.
Digital watermarking interpolation module forms anti-replica code image for adding digital watermarking to the coded image forming.In the present embodiment, digital watermarking is added the discontinuity zone of module in coded image and is added digital watermarking, thereby can improve precision and the accuracy of digital watermarking.That is to say, the base map of printed matter is rectangular area, and size does not limit, but the minimum size that is not less than coded image region, four jiaos of the watermark areas anchor point that is useful on location, watermark information is just added in base map, and base map is generally continuum, but be subject to the restriction of coded system, such as Quick Response Code coding, can be also non-continuum, when adding watermark information in discontinuous region, need to, by watermark location information recording in database, during for watermark detection, call.
Image decoding module decodes to obtain decoded information for the coded image of anti-replica code image that sense terminals is read.
Digital watermarking detection module is for detection of the digital watermarking in anti-replica code image, and carries out the true and false of verifying digital watermark.
Sense terminals refers to and can read mobile phone, panel computer, the scanner of anti-replica code image or the first-class equipment of making a video recording.
In a specific embodiment of the present invention; in remote server and remote data base, be also provided with the access control apparatus such as fire compartment wall, security gateway; make remote server and remote data base be subject to high-intensity protection, thereby can effectively prevent that fake producer from faking by the data of distorting the program in remote server or steal in remote data base.
Figure 9 shows that the applicating flow chart of anti-replica code image of the present invention; Figure 10 shows that anti-replica code image watermark checking schematic flow sheet of the present invention; Figure 11 shows that making and the testing process schematic diagram of anti-replica code image of the present invention; Figure 12 shows that anti-replica code image of the present invention based on smart mobile phone applicating flow chart.Please refer to Fig. 9 to Figure 12, the application flow of anti-replica code image of the present invention comprises the following steps: (1) Image Coding; (2) add digital watermarking; (3) image decoding; (4) detect digital watermarking; (5) send printed matter testing result.
Wherein, Image Coding process is, the base map of the printed matter that remote server reception client sends over, encodes on the base map of printed matter by encoding software and forms coded image, and then remote server stores the information of printed matter and coded message in remote data base into.Wherein coded image Quick Response Code or color code if, adopts conventional Quick Response Code coding techniques software or color code coding techniques software to carry out Image Coding; If coded image is the base map by printed matter some or all ofly carries out that Image Coding forms or carry out Image Coding by the picture of separately establishing forms, can adopt active coded system or passive coded system in the present invention to encode.
Adding digital watermarking process is, adds software on the coded image of formation, add digital watermarking and form anti-replica code image by digital watermarking, and meanwhile, remote server stores digital watermark information in remote data base into.
Image decoding process is, user reads anti-replica code image by sense terminals, and anti-replica code image is sent to remote server, remote server is decoded and is obtained decoded information the coded image in anti-replica code image by decoding software, and judge according to decoded information whether printed matter is registered, and whether inquiry request is legal.Image decoding is the inverse process of Image Coding, if use bar code, and Quick Response Code, the open coded system such as color code, is used corresponding mode to decode; If the image block coded system of using the present invention to propose is carried out Image Coding, need to use the distinctive image decoding mode of the present invention to decode.Figure 13 shows that the flow chart of the decode procedure in anti-replica code image applications process of the present invention.Please refer to Figure 13, the process of the decoding software in image decoding process is: (1) obtains the coded image in anti-replica code image; (2) coded image is divided into N*M piecemeal; (3) coded image is carried out to geometric correction; (4) calculate average gray, brightness, contrast or the acutance of each piecemeal, compare with threshold value, the average gray of piecemeal, brightness, contrast or acutance be greater than threshold value piecemeal be encoded to 1, be less than threshold value piecemeal be encoded to 0, obtain the decoded data of N*Mbit.By to image encoding/decoding, can in remote server, inquire about the relevant information of printed matter, realize the anti-channel conflict of printed matter and trace to the source; Simultaneously remote database record each printed matter detect the information such as number of times, detection time, checkout equipment geographical position, testing result, server can be according to these information, add up the information such as the detection number of times of similar printed matter and the true and false, for enterprise product, sell and the reference of cracking down on counterfeit goods
Detect digital watermarking, remote server is transferred the digital watermark information in remote data base on the basis that printed matter has been registered and inquiry request is legal, and with digital watermark information detected and compare, the checking true and false, when the digital watermark information detecting identical with the digital watermark information in database, judge that printed matter is true, different from the digital watermark information in database when the digital watermark information detecting, judge that printed matter is false;
Send printed matter testing result, the authenticity verification information that remote server is transferred coded message, printed matter information and printed matter in remote data base sends to user.
In addition, user can inquire about printed matter information in remote server, realizes the anti-channel conflict of printed matter and traces to the source; Remote server can be added up all detection history information of printed matter, for enterprise marketing and the reference of cracking down on counterfeit goods, remote server is according to the detected information such as number of times, detection time, detection site, checkout equipment and testing result of coded message index printed matter, and, the detected information of printed matter can also cross index arriving when the true and false of checking printed matter, for example, in the situation that each part printed matter has different coding, when the detected number of times of printed matter is for once, tell this printed matter of user for detecting for the first time; When the detected number of times of printed matter is twice, remote server can send to user to carry out reference the detection information such as the printed matter indexing primary detection time, detection site and checkout equipment; When the detected number of times of printed matter surpasses twice, tell that the detected number of times of user's printed matter is more, please the careful selection of user.Thereby, according to the detection history information of digital watermark information and printed matter, comprehensively judge, can improve the accuracy of judged result.
In sum, anti-replica code image of the present invention, anti-replica code picture system and application, that not only can realize printed matter prevents falsifying and the function of tracing to the source, but also can realize the antiforge function to printed matter.And coded image and digital watermarking overlap in the plane and can reduce the space that anti-replica code image takies, and increase operation rate; In the shading of coded image, with digital watermarking, make coded image itself also can prevent copying; Coded image and digital watermarking be in conjunction with setting, can also reduce the operating procedure in the application process of anti-replica code image.
The above, it is only preferred embodiment of the present invention, not the present invention is done to any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet not in order to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, when can utilizing the technology contents of above-mentioned announcement to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be not depart from technical solution of the present invention content, any simple modification of above embodiment being done according to technical spirit of the present invention, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (10)
1. an anti-replica code image, is characterized in that: comprise the coded image on the base map of being located at printed matter and add the digital watermarking in coded image to, containing the coded message of printed matter in coded image, digital watermarking adopts Semi-fragile digital watermarking.
2. anti-replica code image as claimed in claim 1, is characterized in that: coded image can or form by image block coded system for bar code, Quick Response Code, color code.
3. anti-replica code image as claimed in claim 2, it is characterized in that: image block coded system is utilized the chromatic characteristic coding of image, can be for initiatively encoding or passive coding, first described active coded system for being divided into image N*M piece, according to the coded message of design in advance, each piecemeal of image is carried out to active accommodation again, if needing the coded message of adding is 1, change the average gray of piecemeal, brightness, contrast or acutance etc., make it to be greater than threshold value, if needing the coded message of adding is 0, change the average gray of piecemeal, brightness, contrast or acutance etc., make it to be less than threshold value, by that analogy, until N*M piece all completes Image Adjusting by the coding of prior design, passive coding does not carry out any change to image, image is divided into after N*M piece, calculate respectively average gray, brightness, contrast, acutance of each piecemeal etc., and utilize these information to calculate each block encoding, finally obtain the image coding information of N*Mbit.
4. anti-replica code image as claimed in claim 1, is characterized in that: identical printed matter, corresponding to different coded images, is added with different or identical digital watermarking in different coded images; Or identical printed matter, corresponding to identical coded image, is added with same or different digital watermarking in identical coded image.
5. an anti-replica code picture system, it is characterized in that: comprise remote server, remote data base, image coding module, digital watermarking interpolation module, image decoding module, digital watermarking detection module, client and sense terminals, wherein remote server is for the request of customer in response end and sense terminals; Remote data base is for coded message, printed matter information, detection history information and the digital watermark information of memory print product; The formation coded image of encode on the base map of image coding module for the printed matter that sends in client; Digital watermarking interpolation module forms anti-replica code image for adding digital watermarking to the coded image forming; Image decoding module decodes to obtain decoded information for the coded image of anti-replica code image that sense terminals is read; Digital watermarking detection module is for detection of the digital watermarking in anti-replica code image, and carries out the true and false of verifying digital watermark.
6. anti-replica code picture system as claimed in claim 5, is characterized in that: remote data base can index by the coded image of printed matter printed matter information, detection history information and digital watermark information; Wherein, printed matter information comprises the printed matter information relevant with printed matter such as title, the place of production, production time, the term of validity, price of printed matter; Digital watermark information comprises the watermark parameters information such as the watermark size, watermark location, watermark content, watermark strength of coded image; Detection history information comprises the detection information such as the detected number of times of coded image, detection time, detection site, checkout equipment, testing result.
7. anti-replica code picture system as claimed in claim 6, is characterized in that: digital watermarking is added the discontinuity zone of module in coded image and added digital watermarking.
8. an application for anti-replica code image, is characterized in that, comprises the following steps:
(1) Image Coding, the base map of the printed matter that remote server reception client sends over, by encoding software, on the base map of printed matter, encode and form coded image, then remote server stores the information of printed matter and coded message in remote data base into;
(2) add digital watermarking, add software on coded image, add digital watermarking and form anti-replica code image by digital watermarking, remote server stores digital watermark information in remote data base into;
(3) image decoding, user reads anti-replica code image by sense terminals, and anti-replica code image is sent to remote server, remote server is decoded and is obtained decoded information the coded image in anti-replica code image by decoding software, and judge according to decoded information whether printed matter is registered, and whether inquiry request is legal;
(4) detect digital watermarking, remote server is transferred the digital watermark information in remote data base on the basis that printed matter has been registered and inquiry request is legal, and compares with the digital watermark information detecting, the checking true and false;
(5) send printed matter testing result, the authenticity verification information that remote server is transferred coded message, printed matter information and printed matter in remote data base sends to user.
9. the application of anti-replica code image as claimed in claim 8, is characterized in that, in image decoding process, the decode procedure of decoding software is: (1) obtains the coded image in anti-replica code image; (2) coded image is carried out to geometric correction; (3) coded image is divided into N*M piecemeal; (4) calculate average gray, brightness, contrast or the acutance of each piecemeal, compare with threshold value, the average gray of piecemeal, brightness, contrast or acutance be greater than threshold value piecemeal be encoded to 1, be less than threshold value piecemeal be encoded to 0, obtain the data of N*Mbit.
10. the application of anti-replica code image as claimed in claim 8, is characterized in that:
User can inquire about printed matter information in remote server, realizes the anti-channel conflict of printed matter and traces to the source;
Remote server can be added up all detection history information of printed matter, for enterprise marketing and the reference of cracking down on counterfeit goods, remote server is according to the detected detection information such as number of times, detection time, detection site, checkout equipment and testing result of coded message index printed matter, when the detected number of times of printed matter is for once, tell this printed matter of user for detecting for the first time; When the detected number of times of printed matter is twice, remote server sends to user by detection information such as the printed matter indexing primary detection time, detection site and checkout equipments; When the detected number of times of printed matter surpasses twice, tell that the detected number of times of user's printed matter is more, careful use.
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| CN201410108074.7A CN104010195A (en) | 2014-03-21 | 2014-03-21 | Anti-copying coded image, anti-copying coded image system and application |
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| CN201410108074.7A CN104010195A (en) | 2014-03-21 | 2014-03-21 | Anti-copying coded image, anti-copying coded image system and application |
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Cited By (3)
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