CN102034127A - Novel high-capacity two-dimensional barcode and system, encoding and decoding methods and applications thereof - Google Patents

Novel high-capacity two-dimensional barcode and system, encoding and decoding methods and applications thereof Download PDF

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CN102034127A
CN102034127A CN2009101966155A CN200910196615A CN102034127A CN 102034127 A CN102034127 A CN 102034127A CN 2009101966155 A CN2009101966155 A CN 2009101966155A CN 200910196615 A CN200910196615 A CN 200910196615A CN 102034127 A CN102034127 A CN 102034127A
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information
data
code
dimension code
algorithm
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赵辉
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SHANGHAI YIYOU COMMUNICATION TECHNOLOGIES Co Ltd
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SHANGHAI YIYOU COMMUNICATION TECHNOLOGIES Co Ltd
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Abstract

The invention discloses a novel high-capacity two-dimensional barcode and a system suitable for mobile phones and special equipment, and encoding and decoding methods and applications thereof. The high-capacity two-dimensional barcode is composed of a positioning area, a positioning interval area and a data area, wherein the positioning area is composed of a positioning dotted outline border, positioning points, a positioning information unit and a timing unit; the data area is composed of a header file area and a code information area; the information compression technology, the information coding technology and the information encryption technology are used in the two-dimensional barcode; the two-dimensional barcode can control the error correction level of error correction encoding, the amount of encoding information, the compression method of the information and the encryption method of the information; and in the process of decoding, the dynamic decoding can be performed according to the header file information of the two-dimensional barcode. The two-dimensional barcode is high in capacity, can be positioned quickly so as to carry out all-round code reading, can encrypt information, and can read the information of the two-dimensional barcode by designated special decryption keys or designated decryption devices.

Description

Novel high-capacity two-dimensional barcode and system and decoding method thereof and application
Technical field
High-capacity two-dimensional barcode disclosed in this invention, relate to a kind of 2D bar code technology that is adapted to sector application and mobile value-added service, the sign indicating number type and the codeword structure that relate to two-dimensional bar code, relate to the error correction information coding and decoding technology, information encryption and decryption technology, Information Compression and decompression technique, image recognition and image processing techniques.
Background technology
Two-dimensional bar grows up on the bar code basis, is tens of times of common bar code information amount, even hundreds of times.Two-dimensional bar is included on the basis of traditional one-dimensional bar code coding principle, stack two-dimensional bar code that a plurality of one dimension sign indicating numbers are produced at vertical stack and the matrix two-dimensional bar code of encoding by the different distributions of black and white unit in matrix at a coffin.
Development had been widely used in every field rapidly since bar code came out from the seventies in 20th century.The characteristics of bar code are that the data capacity that is contained is less, just as a kind of means for retrievals such as article, need to rely on the support of background data base.Bar code is not supported Chinese character, and size is bigger, can't encrypt.Two-dimensional bar code has appearred in the deficiency at bar code.The information capacity that two-dimensional bar code stores is bigger, can encrypt and increases processing such as Error Correction of Coding for information, makes the confidentiality of information and error correcting capability etc. be able to great raising.
The feature of two-dimensional bar is to be that base unit is expressed information specific with dark unit and light unit.Two-dimensional bar code typical case code word has QR code, DataMatrix, VeriCode, CODE16k, PDF417, CODE49, MaxiCode, CodeOne etc. hundreds of, one-dimensional bar code generally with the horizontal direction expressing information, by increasing width, increases printing area and comes the expansion capacity.In contrast to this, two-dimensional bar is to come expressing information with two yuan of directions in length and breadth, and the quantity of information that is write down in the picture of the same area but is hundreds of times of one-dimensional bar code.And common bar code uses as identification code, therefore need be by the online external information such as actual detailed data information of calling.Compare with one-dimensional bar code, two-dimensional bar density of data storage height, identical quantity of information can be stored by less area.Therefore, the parts that one-dimensional bar code can't print, two-dimensional bar code but can, such as, electronic unit, small parts.Also may be applied to production, management is sold in the warehouse.Two-dimensional bar code is used respectively and various field, comprises semiconductor, automobile, electronics industry, iron and steel small articles, medicine equipment, medicine, military affairs, production management, logistics field, information management (document management), mobile phone application etc.The appearance of two-dimensional bar code itself just has very big capacity holding actual detailed data information, does not just need as one-dimensional bar code online use or calls external information.Abroad, the sector application of two-dimension code is being popularized, and two-dimension code mainly is that all one's effort by the mobile operator of Japan and Korea S and value added service provider advances and obtains greatly universal as the application of mobile phone value-added service.Even one of mobile operator three big main businesses in mobile value-added service have been become in Japanese two-dimension code value-added service.
China Mobile released the two-dimensional bar code business in 2006, and had determined the two-dimension code that QR sign indicating number and DM sign indicating number are used as mobile value-added service.These two kinds of two-dimensional bar codes are not as the pressure standard, but promoted as proposed standard.State UNICOM and China Telecom all are illustrated respectively in and release the two-dimensional bar code mobile value-added service in 2009 in 2009 2 months simultaneously.
From the practical application request of two-dimension code, mainly comprise the application of sector application and mobile phone.
The mobile phone two-dimensional bar code is two-dimensional bar code combines utilization with communication terminal (mobile phone) a product.In recent years, along with take pictures, the expansion popularization of multimedia message mobile phone and the quick growth of mobile communication value-added service, the 2D bar code technology that can be applicable on the mobile phone is arisen at the historic moment.The mobile phone two-dimensional bar code is meant encodes relevant information with two-dimensional bar code, make two-dimensional barcode information store in mobile phone, read, propagate with the form of multimedia message.The carrier that mobile phone both can be used as two-dimensional barcode information is applied in conjunction with the two-dimensional bar code recognizing apparatus, also can in mobile phone, identify by two-dimensional bar code built-in or that download two-dimensional bar code recognition engine is distinguished on commodity, the magazine, thereby obtain effective information implicit in the two-dimensional bar code, carry out the exploitation of related application.At present, the mobile phone two-dimensional bar code is in developed country and the regional market application that all has than maturation such as America and Europe, Japan and Korea S.Development along with China's mobile communication industry, the arrival in 3G epoch, mobile phone two-dimensional bar code will be dissolved into people clothing, food, live, every aspect such as row, change our habits and customs deeply, Chinese information service ten big first places of using have been climbed up in the application of mobile phone two-dimension code in 2008.
In industry and departments such as civil aviaton, railway, movie theatre, stadiums, tourist attractions, the application of papery ticketing service is also in occupation of absolute main status at present.With respect to electronic bill, traditional papery ticketing service as air ticket, train ticket, film ticket, various admission tickets etc., exists apparent in view several deficiencies in applied links: higher as printing cost, be replicated easily, counterfeit, easily damaged etc.; Concerning ticket unit of operation, be faced with the puzzlement of problems such as the high enterprise of human cost of ticketing, the safety verification that prevents false tickets, ticketing service use that information can not be retained.Concerning the consumer, exist and will reach ticket to the ticketing place in person, also to wait in line, be cheated, preserve inconveniences such as ticket sometimes by false tickets.Along with the expansion of mobile phone two-dimensional bar code electronic bill application market, can effectively solve the problem that traditional ticketing service field exists.In ticketing service market, the electronization of papery ticket will progressively be realized, facility, safety, fashion, efficient.The implementation of electronic ticket is that website (corresponding to computer and mobile phone), the ticketing information promulgating platform in conjunction with ticketing unit finished jointly.During the consumer wants booking, can search relevant ticket information, and land relevant ticketing website with computer or surfing Internet with cell phone, the ticket information that retrieval is relevant, and by the ticketing service of online E-commerce transaction platform order, and finish online payment.After payment was finished, ticket sale system can send to the form of electronic bill with two-dimensional bar code in ticket-holder's the mobile phone, finishes the booking flow process.When consumption, after the ticket checking equipment of process terminal is tested, can enjoy corresponding service.Need invoice, the civil aviaton of the voucher of boarding, occasions such as railway can be on the airport or the self-aided terminal of the printing ticketing service that is provided with of railway station, prints the ticketing service voucher behind the scanning barcode, realizes above-mentioned functions.
The application of two-dimensional code electronic ticketing service will expand following every field to:
■ moves ticket booking: this form became traditional ticket into electronic ticket to first electronic motion picture ticket of China, and logistics is become electron stream, the cost-effective while, had improved efficient by China Mobile's release in 2005.
The ■ accumulated point exchanging: after adopting the accumulated point exchanging mode of mobile phone two-dimension code, the user can propose to exchange application whenever and wherever possible, and exchanges gift to convertibility point nearby.
■ electronic VIP: substitute traditional entity vip card with two-dimension code VIP electronic cards,, just can enjoy service as long as VIP client carries mobile phone.The system that present Global Link VIP easily boards has removed the Hong Kong, Macao and Taiwan in the whole nation 62 tame main airports install.
The ■ electronic coupons: electronic coupons is achieved with no paper at all, directly is dealt in the user mobile phone, and the user only need carry the various discounts that mobile phone can be enjoyed food and drink, amusement, tourism, general merchandise shopping service.
■ electronics delivery of cargo certificate: the form with electronic certificate substitutes traditional delivery of cargo certificate, and the bar code voucher has been widely applied to aspects such as material object is marketed, material object is sent with charge free, greatly facilitates businessman and consumer.
■ plane ticket train tickets etc.: after the passenger buys electronic passenger ticket, land related web site, information such as input identification card number and flight of being correlated with or train number just can be selected the seat voluntarily, finish self-help ticket-buying.Afterwards, the passenger only need with mobile phone on the airport or the special-purpose Possum scanning in railway station exchange the air ticket or the train ticket of entity for, just can board or ride by safety check.
■ electronics hospital guide: the user can register by the mobile phone terminal reservation, goes to the directly number of getting of hospital with the two-dimensional code electronic voucher at subscription time, has significantly reduced the time that stands in the queue to register, waits to see the doctor, for the user provides a kind of novel pattern of seeking medical advice.
The ■ electronics is registered: meeting, exhibition, activity notification and register are used for the visitor of enterprise registration and arrange.
■ mobile phone decoding Application in Anti-counterfeiting: two-dimensional bar code has the multiple anti-fake characteristic, and it is false proof that it can adopt cipher counterfeit-proof, encryption anti-counterfeiting and information that utilization comprised such as fingerprint, photo etc. to carry out, and therefore has extremely strong security and antiforge purpose performance.
Typing of ■ data and decoding online: it is a kind of software of supporting mobile telephone scanning, identification two-dimensional bar code that the mobile phone two-dimensional bar code is read engine.After the mobile phone of band camera needs only built-in or downloads two-dimensional bar code and read engine, just can understand the interior information that is implied of two-dimensional bar code, the facility of freely enjoying two-dimensional bar code and being brought by the two-dimensional bar code on the scan articles.
For example: mobile phone two-dimension code can be applied on aviation ticketing service and the train ticket clothes.The numeral of publication in the Civil Aviation Administration of China website shows that domestic operator's Passenger Traffic in 2008 reaches 1.91 hundred million person-times.And Ministry of Railways statistics in 2009 during spring transportation passenger traffic volume just reach 1.88 hundred million, annually estimate that passenger traffic volume reaches billions of.Wherein as long as 10% passenger uses the two-dimensional code electronic ticketing system, just can be billions of yuans of whole Civil Aviation System and Railway System savings; Next is the human cost that can save logistics distribution in the air ticket agency fee, and the 3rd can reduce the shared fund of sales process, also helps to solve capital settlement and withdrawal of currency from circulation problem between airline and railroad and the ticket agent merchant simultaneously.Save a large amount of printing cost, human cost, reduce the wasting of resources, environment-friendly high-efficiency.Bring consumer's facility, booking process freely.Meet the informatization requirement of industry, promote enterprise management level, enhance the competitiveness.
Still there are various weak points in existing two-dimensional bar code on using, be included in the two-dimensional bar code that prints on the planar medium, stain or damage can occur in circulation and keeping, causes and can't correctly distinguish.Therefore increase Error Correction of Coding, and introduced in order to discern the two-dimensional bar code figure identification figure of usefulness.And the identification figure can occupy bigger area, make the shared area of actual information of two-dimensional bar reduce, simultaneously, owing to be subjected to the restriction of specification standards and practical application effect, the information capacity of existing two-dimensional bar is also little, and a code word can not meet the demands when needing to represent bigger quantity of information.In addition, in order to hold information as much as possible on the area of regulation, existing two-dimensional bar is for different information, and as numeral, letter, and the different coding method of the literal of country variant employing are so that compressed information increases capacity.And thisly adopt the method for different encoding compression to cause a two-dimension code to carry out the two-dimension code coding can not be for various information of same the time for different information.
Summary of the invention
At the existing deficiency of existing two-dimensional bar code, solve the existing existing problem of two-dimensional bar code, the invention discloses a kind of novel high-capacity two-dimensional barcode.Different with the realization technology of other two-dimensional bar codes.Two-dimensional bar code of the present invention is directly encoded for binary information data and is handled, no matter the raw information of coding is numeral, letter, various literal (comprise English, Chinese character, identical text, Korean, and other various countries' literal), or music, sound, photo, image, two-dimensional bar code coding can be directly carried out in the mixing of all binary messages such as code, and can encrypt for information when carrying out two-dimensional bar code coding as required and compress.Simultaneously for the contained quantity of information size of each two-dimensional bar code figure, the matrix shape of dimension of picture size and two-dimension code, error-correction level etc. can dynamically be set according to user's demand.
The present invention discloses the sign indicating number type and the codeword structure of above-mentioned two-dimensional bar code, and the Error Correction of Coding of codeword information and decoding, the encryption and decryption of information, the implementation method of the compression and decompression of information.
In order to realize purpose of the present invention, the technology that the present invention taked is as follows.
This patent disclosure of the Invention a kind ofly brand-new have high capacity and be suitable for mobile phone and two-dimensional bar code and system that industry equipment uses, and the Code And Decode method of this two-dimensional bar code.This high capacity two-dimension code is located spacer region by positioning area, and the data field is formed.And positioning area by the location dashed-line outer box, anchor point, locating information unit, timing unit is formed.The data field is made up of header file data field and coding information data district.Used Information Compression in this two-dimensional bar code, information coding, and information encryption.The error-correction level of this two-dimensional bar code may command Error Correction of Coding, the size of may command information encoded amount, the compression method of may command information, and the encryption method of may command information, the code length of this two-dimensional bar code, contained quantity of information, compression method, encryption method and intensity, error correction/encoding method and error-correction level, and sign indicating number type size can be set according to application demand.
When decoding, can carry out dynamic decoder according to the header file information of this two-dimension code.It is big that this two-dimension code has a capacity, can locate fast, and the comprehensive sign indicating number of reading, and can be to the characteristics of information encryption and compression, the two-dimensional bar code that not only is suitable for mobile phone moves applied business, also is suitable for specialized equipment and is applied to all kinds of fixing and various sector applications fields.
Two-dimensional bar code of the present invention is made up of a plurality of message unit of arranged, is characterized in:
Four limits that are positioned at described matrix are useful on the two-dimensional bar code figure and seek, identification, location and dashed-line outer box unit 101 regularly;
Be arranged in the dark positioning pattern message unit 102 partly of the dashed-line outer box cell mesh of described matrix;
Be arranged in the timing information unit 103 of light-colored part of the dashed-line outer box cell mesh of described matrix;
Be positioned at the upper left corner of described matrix, three difform positioning units in the upper right corner and the lower left corner; Be respectively Initial fix 110, the second location and decide 111, and the 3rd anchor point 112; The order that specified data writes and reads;
Be positioned at the location isolated area 201 of light color of the dashed-line outer box inboard of described matrix;
Be positioned at the data field 210 of isolated area inboard, location of the dashed-line outer box light color of described matrix, and data message unit 130 dark and light color;
Be arranged in described data area by moving to second anchor point since first anchor point, the sequential system that moves to the 3rd anchor point again, the data cell of every nXn rectangular array constitutes a data unit 220,221; N equals 7,8,9,10, the integer of 11,12,13 grades;
The L that to be positioned at described first anchor point be starting point (L=1,2,3, ,) and individual data unit is header file information unit 220, includes header file information, remaining data unit 221 is for encrypting the information unit behind compression and the coding;
Needs according to the client can be adjusted for the value of L.As setting L=1,2 generally speaking.
The coded system of two-dimension code of the present invention, the information coding comprises following steps.
1) raw information is encrypted;
2) original encryption Information Compression;
3) original encryption compressed information Error Correction of Coding;
4) coded message length computation, coded message length are less than the customizing messages of supplying of specified length, as the fixed data or the repetition of a certain partial data;
5) header file generates; Comprise coded message length, encryption method and grade, compression method and grade, the relevant information of error correction/encoding method and grade etc. in the header file;
6) header file Error Correction of Coding;
7) raw information behind header file behind the coding and the coding is converted to pattern in 2 D code;
The identification of two-dimension code of the present invention and decoding process, information decoding comprises following steps.
1) gathering the image in 2 D code signal by image capture device, is digital signal output with the analog signal conversion that collects;
2) binary conversion treatment of image in 2 D code: convert the digital signal of image to the gray-scale value signal; With the image restoring of coloured image or many gray-scale values for having only black and Bai Erse, respectively with gray-scale value with 0 and gray-scale value represent with 255; Finishing binary image handles;
3) image in 2 D code detects: from the image of binary conversion treatment, by the dotted border judgment rule of two-dimension code, judge whether contain two-dimension code in the captured image; And determine the housing position of two-dimension code by four dotted border of two-dimension code; If do not detect the image of two-dimension code, abandon this width of cloth image, reenter image acquisition;
4) affirmation and the recovery of image in 2 D code distortion: by above-mentioned 3) detection of image in 2 D code dashed-line outer box position, can detect two-dimension code figure, and can detect this two-dimension code and whether produce linearity or nonlinear deformation, when linearity or nonlinear deformation take place, it is reverted to matrix two-dimension code figure;
5) the data read position probing in the image in 2 D code: after detecting the position of two-dimension code four limit housings, find out the position of three difform anchor points again, determine the Initial fix in the two-dimension code bianry image, and the initial sum during definite reading of data stops direction and position; If detect three anchor points, or can not determine Initial fix, or stop direction and position, then abandon this width of cloth image, reenter image acquisition less than two-dimension code;
6) two color images of the black and white in the data field are corresponding binary data by the message unit size conversion: two color images of the black and white in the data field are pressed the message unit size, and in same mode of when coding, respectively with binary zero, 1 or 1,0 represents;
7) information unit grouping: after the initial sum when determining reading of data stops direction and position, because two-dimension code four limit housings are made up of the line of dark color and the dotted line of light color, determine the housing dotted line each light color point centre for the grouping point, by the parallel picture dotted line of the grouping point of two-dimension code four limit housings with the housing on four limits, data field in the two-dimension code is divided into MXN information unit, and each information unit is made up of nXn binary data; M, N are equal to or greater than 2 integer.
8) header file information reverting: read the data of the header file length in first and second information unit by the initial direction of reading of data, and it is decoded with corresponding error correction decode algorithm, the gained data are the information of header file;
9) header file information reads; From the beginning in the fileinfo, obtain the size of two-dimension code raw information, the pairing code of the cryptographic algorithm of two-dimension code raw information and grade, the pairing code of compress mode and grade, the pairing code of error correction/encoding method and grade, and whether information such as cutoff information need link are arranged;
10) error correction method error correction decoding: according to above-mentioned 8) and error-correction level information are partly carried out corresponding error correction decoding for the information data in the two-dimension code data field;
11) compress mode and grade decompression: according to above-mentioned 8), corresponding compression algorithm of obtaining from header file and the pairing code information of grade decompress accordingly for the data in the two-dimension code data field;
12) decrypts information: according to above-mentioned 8) cryptographic algorithm and grade, corresponding cryptographic algorithm of obtaining from header file and the pairing code information of grade are deciphered accordingly for the information data in the two-dimension code data field;
13) Info Link is handled: according to 8) information in the header file of decoding gained, confirm whether to have cutoff information to need link, when needing link, will be from 11) corresponding information that obtained is saved in the corresponding chained file; When not required will be from 11) corresponding information that obtained is saved in the file, finishes the decode procedure of two-dimension code;
Two-value for two-dimension code is handled, and its detailed process is as follows.
1) partly carries out binary conversion treatment for the two-dimension code digital picture that collects: convert the digital signal of image to the gray-scale value signal; And carry out Signal Pretreatment: comprise histogram equalization, denoising, sharpening, the edge strengthens;
2) will carry out pretreated entire image and be divided into the rectangular image that equalization is divided into JXK zone, J, K are equal to or greater than 1 integer;
3) grey scale pixel value of adding up in each zone distributes, and calculates two peak values in the grey scale pixel value distribution plan in each zone again,
4) again by two peak values in each zone, calculate the threshold values between two peak values in each zone.
5) gray values of pixel points less than this zone threshold values in each zone is represented with 0, will be represented with 255 greater than the gray values of pixel points of this zone threshold values; Finish binary conversion treatment;
For the image in 2 D code deformation processing method in the information decoding process:
The data that deform of housing unit by a dotted line, calculate the deformation coefficient of each row and each column position, position with each point of image in 2 D code dashed-line outer box, and the position of each data cell of data field reverts to matrix two-dimension code figure respectively with linearity or nonlinear deformation multiplication with it;
The advantage of two-dimensional bar code of the present invention
1, different with the realization technology of other two-dimension codes, two-dimension code of the present invention, directly encode and handle for binary information data, no matter the raw information of encoding is numeral, letter, various literal (comprise English, Chinese character, Japanese, Korean, and other various countries' literal), or music, sound, photo, image, information such as code can directly be carried out two-dimensional bar code coding for binary message, and can encrypt for information before carrying out two-dimensional bar code coding as required and compress.
2, the ordinary two dimensional bar code has been fixed data structure, and fault processing, and shape, size are all restricted.And the shape and size of two-dimension code disclosed in this invention are unrestricted, the user can set the data structure of two-dimension code as required, the grade of fault processing is encrypted and compression method etc., thereby can freely change shape and size and the compression and the encryption method of two-dimension code.Therefore two-dimension code of the present invention can be suitable for the demand of different industries and field and different application purpose because parameter can freely be set by the client.Both can be used as the QR sign indicating number public sign indicating number (two-dimension code that opening of bid accurate) the same and used, and also can be used as private sign indicating number (two-dimension code of non-public standard) and use with the DM sign indicating number.
3, do not need special-purpose two-dimensional bar code printer, only need the laser printer or the ink-jet printer of sale on the market, and use common printer paper just can print two-dimensional bar code disclosed in this invention.Also can use the label machine of selling on the market.
4, do not need specialized equipment to print and distinguish.Can use the desktop scanners of selling on the market, digital camera, or the mobile phone of band shooting camera function just can be for the two-dimensional bar code disclosed in this invention reading images that scans or take pictures, and the information that is read in the two-dimension code to be comprised by the two-dimension code decoding software, and is favourable to the saving cost.And in specialty use field, can with existing two-dimensional barcode recognition equipment compatibility.As long as the decoding software of the two-dimension code of this motion is joined in the existing two-dimensional barcode recognition equipment.
Two-dimension code of the present invention can be applied to following every field.
The ■ mobile phone is used: as long as have the mobile phone of camera, and the decoding software of corresponding two-dimension code of the present invention is installed on mobile phone, just can be discerned and read the represented corresponding contents of two-dimension code of the present invention; And can further enrich by the surfing Internet with cell phone function and to obtain content corresponding.
■ authenticates (false proof, product quality): off-line and online double authentication function can be provided.
Be applied to offline authentication: encrypt and error correction because two-dimension code sign indicating number of the present invention has bigger information capacity and has, in sign indicating number, can add the false proof and needed full detail of product quality certification, but and can add the safety that information is guaranteed on encryption and error correction maximum limit ground.
Be applied to on-line authentication: all information during off-line shows can also surfing Internet with cell phone, note, and mode interactive authentication such as Help by Phone is confirmed the true and false of shown information.Guarantee the true and reliable of information.
The ■ logistics, stock control and production management: all information are all weaved into two-dimension code of the present invention and are printed on the outside of article, to guarantee identification automatically and to confirm.
■ notes of securities (train ticket, air ticket, music, film ticket etc., and various coupon): can be printed as papery two-dimension code sign indicating number, also can be stored in the mobile phone as bill evidence, check when confirming by taking or downloading,
Confirm just can to use as long as decode for two-dimension code sign indicating number of the present invention.
■ information management (file, book publishing and preservation): a large amount of paper document information can be printed on the paper media by two-dimension code coding of the present invention, dwindle the number of paper of preservation greatly, can narrow down to about 1/50th to 1/100th.Dwindle the amount that file is preserved greatly, saved cost and storage space.
The ■ information encryption: two-dimension code of the present invention has encryption function, can encrypt for the information of document, and the two-dimension code demoder that only has (or download) corresponding deciphering parameter could correctly be understood content corresponding.
The ■ medicine equipment, medicine, and hospital's medical record management: information directly can be printed on the outer bag of article or medicine by two-dimension code of the present invention, the user can directly take pictures by corresponding mobile phone decoding software and understand the information content in the two-dimension code, guarantees the correct of medicine and content.And the content in patient's the case record can be preserved and print in patient's the case record by two-dimension code of the present invention, and patient or doctor can read medical record information by mobile phone or special-purpose code reader.And the present used IC case record of hospital, many contents are to be stored in the computer, are not easy to patient oneself and read information, what also be not easy to have a power failure etc. in emergency circumstances carries out corresponding medical treatment to patient.
■ government, public security, military affairs, area of security: the maintaining secrecy of file, maintaining secrecy of personal information comprises certificate, passport, the information in the I.D., and corresponding file document.
■ old man and children's safety is guaranteed: the two-dimension code of the present invention of printing special inks (watermark etc.) by the specific position on old man or children's clothes, make these crowds that certain message identification arranged, and the DS sign indicating number that this special inks is printed has only particular decoder to decode, just in case after these personnel missings, specific groups such as public security officer can use special demoder to read and discern.Same principle, this method also can be used for the combatant's of army of army sign.
The content of general A4 one page paper is calculated with 1000 Chinese characters or 2000 above English alphabets, can be saved on 2X2 square centimeter and even the littler papery area by two-dimension code conversion of the present invention.Therefore the word content of the book of the A4 paper of a 50-100 page or leaf can be printed on the A4 paper that is saved in one page only by two-dimension code of the present invention, pass through dedicated scan equipment when reading, picture pick-up device, or mobile phone and special-purpose decoding software decode and restore original information, improved the efficient that papery stores greatly.Be suitable for national government office, the library, news agency, army, the police, and privacy mechanism is preserved and secret demand for the papery of information.The information that two-dimension code of the present invention is preserved does not rely on the literal reading software of computing machine, the easily problem of the correspondence reading software upgrading that software upgrading brought.Can be applied to newspaper and magazine, need only title of publication and brief introduction for the content that can not publish in full, and detailed content can be with two-dimension code printing of the present invention, sacrificial vessel has the cellphone subscriber of camera function to read and shows (user only need read a yard software by mobile phone-downloaded two-dimension code of the present invention), and function of pronunciation that can be by mobile phone reads out content is bright.Two-dimension code of the present invention can also be as advertising media, the information content of advertisement and discounting etc. directly is made into two-dimension code of the present invention, the user is by reading after the direct reading of content of mobile phone or directly use and giving a discount, also can be applicable to the false proof verification and validation of commodity, also can use quality restriction and affirmation with commodity.
Description of drawings
The code word example of Fig. 1 high-capacity two-dimensional barcode disclosed in this invention
The code word example of Fig. 2 high-capacity two-dimensional barcode disclosed in this invention
The code word example of Fig. 3 high-capacity two-dimensional barcode disclosed in this invention
The code word example of Fig. 4 bar code
The code word example of Fig. 5 QR two-dimensional bar code
The code word example of Fig. 6 DM two-dimensional bar code
The coding flow process of Fig. 7 high-capacity two-dimensional barcode disclosed in this invention
The decoding process of Fig. 8 high-capacity two-dimensional barcode disclosed in this invention
The decoding two-value treatment scheme of Fig. 9 high-capacity two-dimensional barcode disclosed in this invention
One of use-pattern of Figure 10 high capacity two-dimension code
Two of the use-pattern of Figure 11 high capacity two-dimension code
Three of the use-pattern of Figure 12 high capacity two-dimension code
Four of the use-pattern of Figure 13 high capacity two-dimension code
Embodiment
In conjunction with the accompanying drawings and embodiment be described in further detail for 2 D code system of the present invention and coding flow process and decoded stream journey.
Fig. 1 has described the codeword structure of two-dimension code.Two-dimension code is located spacer region 201 by dashed-line outer box positioning area 101, and the data field forms 210.And positioning area is by locating dashed-line outer box 101, anchor point 110,111,112, locating information unit 102, timing unit institute 103 compositions.The data field is made up of header file data field and coding information data district.
In the two-dimension code code word of the present invention, location dashed-line outer box 101 is by the locating information unit 102 of dark color, the timing unit 103 of light color, and three anchor point unit 111,112 and 113 compositions.The length of locating information unit 102 is n-2 element length, and the length of timing unit is 2 element lengths;
The code word of high capacity two-dimension code of the present invention is made of MXN data unit.And each data unit is made of nXn data unit.Each data cell is a binary message bit.Wherein, M, the value of N is the integer more than or equal to 2, the value of n can be 7,8,9,10,11,12,13,, the integer that waits.That Fig. 1 is represented is M=N=3, n=9, and the header file size is the two-dimensional bar code example of the data unit of L=2.At this moment, the quantity of information of code word is 2 stature file data units and 7 coded message units.
The profile size of this code word and how much can changing of quantity of information by setting.Dark color in the data field is represented different binary data respectively with the message unit of light color.
Fig. 2 is the dashed-line outer box positioning area 101 of expression high capacity two-dimension code, location spacer region 201, data field 210;
Fig. 3 is the header file information unit 301 in the data field 210 of expression high capacity two-dimension code, and coding information data unit 302;
With reference to the coding process flow diagram of high-capacity two-dimensional barcode disclosed in this invention shown in Figure 7, describe for the generation of two-dimension code.Its detailed process is as follows:
1) at first, sets cryptographic algorithm as required, compression algorithm, RS Error Correction of Coding algorithm and error correction intensity, and the M that sets the two-dimensional bar code that is generated, N, n, the value of L;
2) read in the raw information that to encode, information is carried out encryption according to setting; Or do not carry out encryption;
3) according to setting information is compressed processing; Or do not compress processing;
4) calculate through above-mentioned 2), 3) length of information after handling, and according to Error Correction of Coding mode and grade, and the M of two-dimensional bar code, N, n, the parameter setting of L determines that the informational needs of this length generates one or several two-dimensional bar code; If information is long, can segmentation generate two or plural two-dimensional bar code.Do not reach when generating the desired specified data amount of two-dimension code for information data amount, the redundant data or the specific information data that increase fixed bit are filled up.And segment information joined in the header file.So that synthetic when decoding, generate a message file;
5) according to above-mentioned 1), with 4) information, produce corresponding header file information (comprise cipher mode, compress mode, Error Correction of Coding mode and grade, through encrypt and compression after message length, and segment information);
6) correct fileinfo carries out the RS sign indicating number coding of appointment; Produce the header file information after encoding;
7) for through 2), 3) information handled, according to 1) RS Error Correction of Coding algorithm and the error correction intensity set encodes;
8) with above-mentioned through 6) serial data and 3 after the header file that produces is encoded) serial data after the raw information handled is encoded is integrated into a serial data;
9) with 6) header file that produces is through the binary message and 7 behind the RS coding) data message after the Error Correction of Coding weaves into the data matrix of MXN nXn bit by from top to bottom form from left to right, the binary data of each data matrix is weaved into the data matrix of a nXn bit from top to bottom by from left to right;
10) the header file data come the foremost, and other digital coding are followed thereafter, and from top to bottom order forms a big matrix of being made up of MXN data matrix.Each data matrix is also referred to as data unit;
11) produce the location dashed-line outer box, anchor point, and location isolated area, and with 0 and 1 of the binary data in MXN the data matrix, respectively with dark and light color expression, or represent with light color and dark color respectively, generate the two-dimension code figure; The most frequently used method for expressing dark and light color is to represent respectively with gray-scale value 0 and 255.And preserve the two-dimension code figure of this generation;
12) according to 4) calculating, confirm whether to also have the informational needs of segmentation to handle, when needing to handle, return 5), produce corresponding next two-dimension code again;
13) preserve and print on demand the two-dimension code figure that is generated.
With reference to the decoding process figure of Fig. 8 and high-capacity two-dimensional barcode disclosed in this invention shown in Figure 9, describe for the decoding of two-dimension code.Its detailed process is as follows.
1) gathering the image in 2 D code signal by image capture device, is digital signal output with the analog signal conversion that collects;
2) binary conversion treatment of image in 2 D code: convert the digital signal of image to the gray-scale value signal; With the image restoring of coloured image or many gray-scale values for having only black and Bai Erse, respectively with gray-scale value with 0 and gray-scale value represent with 255; Finishing binary image handles;
3) image in 2 D code detects: from the image of binary conversion treatment, by the dotted border judgment rule of two-dimension code, judge whether contain image in 2 D code in the captured image; And determine the housing position of two-dimension code by four dotted border of two-dimension code; If do not detect the image of two-dimension code, abandon this width of cloth image, reenter image acquisition;
4) affirmation and the recovery of image in 2 D code distortion: by above-mentioned 3) the detection of image in 2 D code dashed-line outer box position, two-dimension code figure be can detect and linearity or nonlinear deformation whether produced, when linearity or nonlinear deformation take place, data by the housing that deforms, calculate the deformation coefficient of each row and each column position, position with each point of image in 2 D code dashed-line outer box, and the position of each data cell of data field reverts to matrix two-dimension code figure respectively with linearity or nonlinear deformation multiplication with it;
5) the data read position probing in the image in 2 D code: after detecting the position of two-dimension code four limit housings, find out the position of three difform anchor points again, determine the Initial fix in the two-dimension code bianry image, and the initial sum during definite reading of data stops direction and position; If detect three anchor points, or can not determine Initial fix, or stop direction and position, then abandon this width of cloth image, reenter image acquisition less than two-dimension code;
6) two color images of the black and white in the data field are corresponding binary data by the message unit size conversion: two color images of the black and white in the data field are pressed the message unit size respectively with binary zero, and 1 or 1,0 represents;
7) information unit grouping: after the initial sum when determining reading of data stops direction and position, because two-dimension code four limit housings are made up of the line of dark color and the dotted line of light color, determine the housing dotted line each light color point centre for the grouping point, by the parallel picture dotted line of the grouping point of two-dimension code four limit housings with the housing on four limits, data field in the two-dimension code is divided into MXN information unit, and each information unit is made up of the matrix of nXn binary data;
8) header file information reverting: read data in first information unit by the initial direction of reading of data, and it is decoded with corresponding error correction decode algorithm, the gained data are the information of header file;
9) header file information reads; From the beginning in the fileinfo, obtain the size of two-dimension code raw information, the cryptographic algorithm of two-dimension code raw information and grade, compress mode and grade, error correction/encoding method and grade, and whether have segment information to need link;
10) error correction method raw information error correction decoding: according to above-mentioned 9) and error-correction level information are carried out corresponding error correction decoding for the data in the two-dimension code data field;
11) confirm whether the segmentation link information is arranged, if first segment information in the segment information, decoded information is saved in the file of appointment; If whether first section, with information adding in the information of the preceding paragraph file; If also have segment information to exist, when needing link, return 1), scan next two-dimensional bar code figure.When not needing further to link, change 12 over to);
12) information decompresses: from 11) read decoded information the preservation file of appointment, according to above-mentioned 9) in compress mode and class information, decompress accordingly for data;
13) raw information deciphering: according to above-mentioned 9) cryptographic algorithm and class information are for through 12) information data after handling carries out corresponding decryption processing, obtains raw information;
14) raw information is stored among the file of appointment or is presented on the appointed equipment;
The process flow diagram of handling with reference to the two-value of high-capacity two-dimensional barcode disclosed in this invention shown in Figure 9 handles to describe for the two-value of two-dimension code.Its detailed process is as follows:
1) partly carries out binary conversion treatment for the two-dimension code digital picture that collects: convert the digital signal of image to the gray-scale value signal; And carry out Signal Pretreatment: comprise histogram equalization, denoising, sharpening, the edge strengthens;
2) will carry out pretreated entire image and be divided into the rectangular image that equalization is divided into JXK zone, wherein, J and K are respectively the integer more than or equal to 1; It is big more that J and K obtain numeral, and the zone of cutting apart is many more, and the peak value of the two-value of being got is accurate more;
3) grey scale pixel value of adding up in each zone distributes, and calculates two peak values in the grey scale pixel value distribution plan in each zone again;
4) again by two peak values in each zone, calculate the threshold values between two peak values in each zone;
5) gray values of pixel points less than this zone threshold values in each zone is represented with 0, will be represented with 255 greater than the gray values of pixel points of this zone threshold values; Finish binary conversion treatment.
In concrete the enforcement, high-capacity two-dimensional barcode of the present invention is corresponding to different application, cryptographic algorithm, compression algorithm, Error Correction of Coding algorithm and error-correction level, and the relevant M of two-dimensional bar code, N, n, parameter values such as L can be set at different numerical value, to satisfy different needs.And can two-dimension code of the present invention be set at a kind of disclosed disclosed two-dimension code the same with the DM sign indicating number as the QR sign indicating number (public sign indicating number) that can satisfy vast demand according to different demands, also can be set at the non-public two-dimension code (private sign indicating number) of underground its cryptographic algorithm or encryption and decryption parameter.
Case study on implementation 1:
As when mobile value-added service is used, can set L=1, n=9, M=N=3,4,5,,, wait numerical value.When mobile value-added service was used, data volume generally was not big especially, need not link for data, does not promptly need to use the link of a plurality of two-dimension codes.As shown in Figure 1, L=1, n=9, M=N=3.
Case study on implementation 2:
And when being applied to document storing etc., particularly maintain secrecy and the preservation of large-scale document, can adopt the two-dimensional bar code of several method, realize effective preservation of information.
1, for bulky information, the quantity of information of two-dimensional bar code can be set according to the information capacity of every page of A4 paper size.As the information of (as A4 paper) on each page paper can being weaved into a two-dimensional bar code, and the information that this page or leaf is contained generates a two-dimensional bar code, is printed on certain position of this page paper, so that for the reading and the preservation of this page information; As shown in figure 10.
2, for some content of news or books explanation etc., not particular importance, can only publish a title and brief description, particular content generates one and has two-dimensional bar code; The two-dimensional bar code demoder of only holding this two-dimension code just can be understood content wherein, reads behind the mobile phone-downloaded two-dimension code ocr software and can sounding as using, and also can use special-purpose two-dimension code decoding reader to read and sounding.Can solve the problem of the space of a whole page deficiency of newspaper and books explanation etc., it is limited also can to solve the elderly's eyesight, and the problem of the difficult papery literal of reading as shown in figure 12.
3, for some specific informations,, also can only publish contents such as a title or a part of brief description as need to be keep secret or information encrypted, particular content can be created on one have encrypt and the two-dimensional bar code of compression property in; Only hold the two-dimensional bar code demoder of the deciphering of this two-dimension code and decompressing function and corresponding key and can and understand wherein the information content by deciphering, and, encrypted content for different brackets, can decipher and read by the decoding key of different brackets, the personnel that only hold corresponding secret key could read corresponding documentation content, play good privacy functions, solve the problem of file security, as shown in figure 11.
4, when relatively bulky information wishes again to preserve in a code word, can be by setting M, N, the size of the value of n, the information that makes are kept in the two-dimensional bar code, and the size of the size of this two-dimensional bar code can be unrestricted, even be set to the size of one page A4 paper.As shown in figure 12.
5, for bulky information, can cut apart, and not adopt the method for link by page or leaf, preserve printing, preserve printing according to certain physical direction and order, when decoding, also decode by same order.As shown in figure 13.Be applicable to of preservation and the recognition of dedicated scan equipment for documentation.High capacity information prints preservation according to the form of every page of two-dimension code.1 page of A4 paper can be preserved tens two-dimension code figures, and each two-dimension code figure contains the word content of one page A4 paper size.
6, for bulky information, fixing M, N, the value of n, and with the method for link: cut apart the two-dimension code that generates a plurality of cascades for bulky information.
Case study on implementation 3:
High capacity two-dimension code of the present invention is as the implementation method of public sign indicating number.Two-dimension code of the present invention can be after QR sign indicating number and DM sign indicating number be by standardization, use as the two-dimension code of Open Standard.The coded system of this two-dimension code just, cipher mode, compress mode, and various parameter all comes into the open, and is convenient to freely using of the public.Comprise that the public can freely edit the various required two-dimension code codeword information of generation by encoding software, and decode for various code word, obtain raw information by the two-dimension code decoding software.
Case study on implementation 4:
High capacity two-dimension code of the present invention is as the implementation method of private sign indicating number.Two-dimension code of the present invention also can be used as private sign indicating number and uses, just the coded system of this two-dimension code, cipher mode, compress mode, and various parameter non-publicization all, or non-publicization of a part wherein, just can be used as private sign indicating number and use, have good confidentiality.
Case study on implementation 5:
When high-capacity two-dimensional barcode of the present invention uses as public sign indicating number,, just it can be used as private sign indicating number, can realize the another kind of implementation method of using as private sign indicating number thus as long as change the setting of its parameters.At this moment, its cryptographic algorithm, compression algorithm, and error correction algorithm can be disclosed algorithm.And the pairing parameter of its algorithm is private, by private algorithm parameter, as uses special encryption parameter to make it become private sign indicating number.Can on the basis of above-mentioned public yard Code And Decode mode, increase private encryption and decryption parameter.By this private encryption parameter, generate a specific ciphering two-dimension sign indicating number by program.During this two-dimension code decoding, must download the deciphering parameter that a specific two-dimension code at this encryption parameter is decoded.When this two-dimension code is decoded, can use public sign indicating number decoding software, and could be correctly decoded the private sign indicating number of the two-dimension code after encrypting after reading this deciphering parameter automatically by this public affairs sign indicating number decoding software.For the user who does not hold this deciphering parameter,, can not correctly resolve the information of this two-dimension code even used public sign indicating number decoding software.
Embodiment 6
The implementation method of having only the specific installation of appointment to be correctly decoded.Private encryption and decryption parameter in the foregoing description 5 can be to contain the special parameter of decoding with the special sequence number that can be read by Automatic Program in the terminal device etc.When decoding with mobile phone terminal, this special parameter can be the phone number of mobile phone terminal, SIM card sequence number, card number etc., or the serial number that is associated of terminal such as mobile phone terminal sequence number.When decoding with specialized equipment, can be the serial number that the terminal of the sequence number that can be obtained by Automatic Program etc. in this specialized equipment is associated, have only the equipment that conforms to the specified sequence number can correctly read the information of two-dimension code; And the terminal that does not have this serial number all can't correctly read the information of this two-dimension code.
Above-described embodiment and implementation method only are embodiments of the invention.The present invention is not limited only to the foregoing description.For one of ordinary skill in the art, running counter to any conspicuous change of under the prerequisite of the principle of the invention it being made, all belong to the protection domain of design of the present invention and appended claims.

Claims (23)

1. a high-capacity two-dimensional barcode is made up of a plurality of message unit of arranged, is characterized in:
There is dashed-line outer box unit 101 on four limits that are positioned at described matrix;
Be positioned at the upper left corner of described matrix, there are three difform positioning units in the upper right corner and the lower left corner;
There is the location isolated area 201 of light color the dashed-line outer box inboard that is positioned at described matrix;
There is data field 210 the isolated area inboard, dashed-line outer box location that is positioned at described matrix;
2. as the described high-capacity two-dimensional barcode of above-mentioned claim 1, it is characterized in that the dashed-line outer box unit is by the locating information unit 102 of dark color part, form with the timing information unit 103 of light-colored part, be used for the two-dimensional bar code figure and seek, identification, location and timing;
3. as the described high-capacity two-dimensional barcode of above-mentioned claim 1, it is characterized in that positioning unit is distributed in the upper left corner of matrix, the upper right corner, and the lower left corner, and picture shape difference, be respectively Initial fix 110, the second location and decide 111, and the 3rd anchor point 112; Be used for the order that specified data writes and reads;
4. as the described high-capacity two-dimensional barcode of above-mentioned claim 1, it is characterized in that, the data that are arranged in described data field are by moving to second anchor point since first anchor point, and then the sequential system that moves to the 3rd anchor point direction by first anchor point, the data cell of every nXn rectangular array constitutes a data unit 220,221; N is the integer more than or equal to 7;
5. as the described high-capacity two-dimensional barcode of above-mentioned claim 1, it is characterized in that, first data unit that to be positioned at described first anchor point be starting point is a header file information unit 220, include header file information, remaining data field 221 is for encrypting the coding information data district behind compression and the coding;
6. high capacity two-dimension code as claimed in claim 1 is characterized in that, the optical characteristics of the binary data information unit in the data field is dark for using, and shallow two kinds of colors are represented 1 and 0 of binary bit of information respectively, or 0 and 1; Each message unit of 1 and 0 represents 130 with the square of 1 base unit length in the two-dimension code figure;
7. as the described high capacity two-dimension code of above-mentioned claim 1, it is characterized in that the length of the dark part locating information of each in dashed-line outer box unit 102 and width are respectively n-2 elementary cell length and 2 base unit length; The length of each the light-colored part timing unit in the dashed-line outer box and width respectively are respectively 2 elementary cell length; And 1 dark part adds the length 121 that 1 light-colored part is formed 1 information unit;
8. as the described high capacity two-dimension code of above-mentioned claim 1, it is characterized in that, be positioned at dashed-line outer box inboard, location and have the location spacer region, and the width of location spacer region is 1 a base unit length 201;
9. as above-mentioned claim 1,4 described high capacity two-dimension codes is characterized in that, each information unit in the data field is by being made up of nXn message unit.The order that writes and read of message unit is, in the data field, be starting point by Initial fix 110, to n message unit of the second anchor point direction, the message unit of the nXn that is made up of to the 3rd an anchor point n message unit Initial fix is an information unit again;
10. as the described high-capacity two-dimensional barcode of above-mentioned claim 1, it is characterized in that the matrix shape of two-dimension code and size can be set by the big freedom in minor affairs of information unit; Can set two-dimensional bar code according to the size of coding information quantity is MXN information unit size; And each information unit is made up of nXn binary message bit; M wherein, N is respectively the integer more than or equal to 2;
11. as above-mentioned claim 1 and 5 described high capacity two-dimension codes, the unit information that includes two-dimension code length and width in the header file information unit, the compress mode of data division, cipher mode forms the header file coded message after the information via Error Corrections of Coding such as Error Correction of Coding mode and error correcting code grade;
12. as above-mentioned claim 1 and 5 described high capacity two-dimension codes, digital coding includes in the district, through encrypting compression, and the coded message after the Error Correction of Coding;
13. as the described high-capacity two-dimensional barcode of above-mentioned claim 1, its characteristics are that the information coding comprises following steps.
1) raw information is encrypted;
2) original encryption Information Compression;
3) original encryption compressed information Error Correction of Coding;
4) coded message length computation, coded message length is less than the fixed data of supplying of specified length;
5) header file generates; Comprise coded message length, encryption method and grade, compression method and grade, error correction/encoding method and grade in the header file;
6) header file Error Correction of Coding;
7) raw information behind header file behind the coding and the coding is converted to pattern in 2 D code;
14. as above-mentioned claim 1,13 described high capacity two-dimension codes is characterized in that, include cryptographic algorithm, its cryptographic algorithm can be existing open or private cryptographic algorithm, as
The DES algorithm, the IDEA algorithm, RSA Algorithm, the MD5 algorithm, and other cryptographic algorithm etc.; It also can be private cryptographic algorithm;
15. as above-mentioned claim 1,13 described high capacity two-dimension codes is characterized in that, include compression algorithm, its Coding Compression Algorithm can disclose or undocumented Coding Compression Algorithm for existing, as the ZIP algorithm, and the RAR algorithm, and other compression algorithms etc.; It also can be private compression algorithm;
16. as above-mentioned claim 1,13 described high capacity two-dimension codes, it is characterized in that, its header file part, and message part include the Error Correction of Coding algorithm, its Error Correction of Coding algorithm can be existing open or undocumented Error Correction of Coding algorithm, as the RS sign indicating number, BCH code, or other Error Corrections of Coding etc.;
17. as above-mentioned claim 1,13 described high capacity two-dimension codes, its characteristics are that information decoding comprises following steps:
1) gathering the image in 2 D code signal by image capture device, is digital signal with the analog signal conversion that collects;
2) binary conversion treatment of image in 2 D code: convert the digital signal of image to the gray-scale value signal; With the image restoring of coloured image or many gray-scale values for having only black and Bai Erse, respectively with gray-scale value with 0 and gray-scale value represent with 255; Finishing binary image handles;
3) image in 2 D code detects: from the image of binary conversion treatment, by the dotted border judgment rule of two-dimension code, judge whether contain two-dimension code in the captured image; And determine the housing position of two-dimension code by four dotted border of two-dimension code; If do not detect the image of two-dimension code, abandon this width of cloth image, reenter image acquisition;
4) affirmation and the recovery of image in 2 D code distortion: by above-mentioned 3) detection of image in 2 D code dashed-line outer box position, can detect two-dimension code figure, and can detect this two-dimension code and whether produce linearity or nonlinear deformation, when linearity or nonlinear deformation take place, it is reverted to matrix two-dimension code figure;
5) the data read position probing in the image in 2 D code: after detecting the position of two-dimension code four limit housings, find out the position of three difform anchor points again, determine the Initial fix in the two-dimension code bianry image, and the initial sum during definite reading of data stops direction and position; If detect three anchor points, or can not determine Initial fix, or stop direction and position, then abandon this width of cloth image, reenter image acquisition less than two-dimension code;
6) two color images of the black and white in the data field are corresponding binary data by the message unit size conversion: two color images of the black and white in the data field are pressed the message unit size, and in same mode of when coding, respectively with binary zero, 1 or 1,0 represents;
7) information unit grouping: after the initial sum when determining reading of data stops direction and position, because two-dimension code four limit housings are made up of the line of dark color and the dotted line of light color, determine the housing dotted line each light color point centre for the grouping point, by the parallel picture dotted line of the grouping point of two-dimension code four limit housings with the housing on four limits, data field in the two-dimension code is divided into MXN information unit, and each information unit is made up of nXn binary data;
8) separate header file district and block of information: read data in first information unit by the initial direction of reading of data;
9) header file information reads; Header file district information is decoded with corresponding error correction decode algorithm, and the gained data are the information of header file; From the beginning in the fileinfo, obtain the size of two-dimension code raw information, the cryptographic algorithm of two-dimension code raw information and grade, compress mode and grade, error correction/encoding method and grade, and whether information such as the two-dimension code segment information need link are arranged;
10) error correction method raw information error correction decoding: according to above-mentioned 8) and error-correction level information are carried out corresponding error correction decoding for the data in the two-dimension code data field;
11) compress mode and class information original encryption information decompression: according to above-mentioned 8) decompress accordingly for the data in the two-dimension code data field;
12) raw information deciphering: according to above-mentioned 8) cryptographic algorithm and class information are deciphered accordingly for the information data in the two-dimension code data field;
13) Info Link is handled: according to 8) information in the header file of decoding gained, confirm whether to have cutoff information to need link, when needing link, will be from 11) corresponding information that obtained is saved in the corresponding chained file; Not needing the link constantly will be from 11) corresponding information that obtained is saved in the file, finishes the decode procedure of two-dimension code;
18. as above-mentioned claim 1,17 described high capacity two-dimension codes, its characteristics are that the binary conversion treatment in the information decoding process is:
1) partly carries out binary conversion treatment for the two-dimension code digital picture that collects: convert the digital signal of image to the gray-scale value signal; And carry out Signal Pretreatment: comprise histogram equalization, denoising, sharpening, the edge strengthens;
2) will carry out the rectangular image that pretreated entire image equalization is divided into JXK zone,
3) grey scale pixel value of adding up in each zone distributes, and calculates two peak values in the grey scale pixel value distribution plan in each zone again,
4) again by two peak values in each zone, calculate the threshold values between two peak values in each zone.
5) gray values of pixel points less than this zone threshold values in each zone is represented with 0, will be represented with 255 greater than the gray values of pixel points of this zone threshold values; Finish binary conversion treatment;
19. as above-mentioned claim 1,17 described high capacity two-dimension codes, its characteristics are that the image in 2 D code deformation processing method in the information decoding process is:
The data that deform of housing unit by a dotted line, calculate the deformation coefficient of each row and each column position, position with each point of image in 2 D code dashed-line outer box, and the position of each data cell of data field reverts to matrix two-dimension code figure respectively with linearity or nonlinear deformation multiplication with it;
20. as above-mentioned claim 1,13,14,15,16 described cryptographic algorithm, compression algorithm, and error correction algorithm, its characteristics are, its cryptographic algorithm, compression algorithm, and error correction algorithm can be disclosed algorithm, and corresponding various parameter can be disclosed, to use as disclosed two-dimension code (public sign indicating number).
21. as above-mentioned claim 1,13,14,15,16 described cryptographic algorithm, compression algorithm, and error correction algorithm, its characteristics are, its cryptographic algorithm, compression algorithm, and error correction algorithm can be private algorithm, and its corresponding various parameters will not disclose, to use as private two-dimension code (private sign indicating number).
22. as above-mentioned claim 1,13,14,15,16 described cryptographic algorithm, compression algorithm, and error correction algorithm, its characteristics are, its cryptographic algorithm, and compression algorithm, and error correction algorithm can be disclosed algorithm.And the pairing parameter of its algorithm can be private.Method by the pairing parameter of underground its algorithm realizes the non-public of code word.As encryption method is disclosed, and the encryption parameter that uses is private, to realize the non-public of two-dimension code code word.
23. as above-mentioned claim 1,13,14,22 described cryptographic algorithm, its characteristics are that its cryptographic algorithm can be disclosed, and its encryption and decryption parameter is non-public.This private encryption and decryption parameter, it can be the special parameter of the special sequence number that can read by Automatic Program that contains the terminal device of the usefulness of decoding, when decoding with mobile phone terminal, it can be phone number with this mobile phone terminal, SIM card number, or the sequence data that is associated such as mobile phone body identifier.When decoding with specialized equipment, can be the sequence data of the Equipment Serial Number that can obtain by Automatic Program etc. in this specialized equipment, can specify and have only the equipment that conforms to the specified sequence data can correctly read the information of this two-dimension code.
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Application publication date: 20110427