CN102446264A - Printing and scanning recognition method and system for two-dimensional code of special value-added tax invoice - Google Patents
Printing and scanning recognition method and system for two-dimensional code of special value-added tax invoice Download PDFInfo
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Abstract
The invention provides a scanning recognition method and system for a matrix type two-dimensional code image of a special value-added tax invoice. The method comprises the following steps of: processing content information for printing the special value-added tax invoice to form a character string; representing a binary '1' module through four printing points to obtain a matrix type two-dimensional code of the character string; printing the content information and the matrix type two-dimensional code on the special value-added tax invoice; scanning to obtain a whole image of the special value-added tax invoice to be recognized; cutting out matrix type two-dimensional code images of the whole image and carrying out decoding treatment on the matrix type two-dimensional code images; and outputting decoding data information of the matrix type two-dimensional code images. According to the invention, a condition of punching the invoice is effectively avoided when a needle type printer is used for printing the two-dimensional code of the multi-copy special value-added tax invoice; meanwhile, the information capacity of a unit area is improved; the printing and scanning recognition method and system provided by invention also can be used for recognizing the condition that a file paper surface contains a plurality of the two-dimensional code images and the recognition efficiency is high.
Description
Technical field
The present invention relates to the bill anti-counterfeit field, particularly a kind of printing of image in 2 D code of VAT invoice and scanning recognition technology.
Background technology
Two-dimension code has little, the capacious advantage of print area for existing bar code and numerical ciphers, the use of two-dimension code has become current trend, but for many couplet VAT invoice, must use stylus printer to print.And in existing two-dimensional sign indicating number stylus printing; Use and concentrate the matrix of printed dots of printing a 2*2 or 3*3 to constitute a module; Need reserve the mode of a plurality of blank simultaneously, help the identification of identification equipment like this, but there is following problem in this Method of printing print module:
At first, because the module of expression " 1 " all need be printed 2*2 or 3*3 point thick and fast, therefore in print procedure, the probability that VAT invoice is punched easily is higher, and the probability that causes the information on the VAT invoice to be identified is higher;
Secondly; Because existing Method of printing is for the ease of identification; Need leave a large amount of blank, represent a module like a needs 5*5 cell, wherein 9 needle printers have only used 4 cells wherein to print effective information and need 21 spaces; 24 needle printers only need 9 cells and need 16 spaces; Therefore wasted a large amount of spaces so that distinguish each module, a large amount of like this blank has reduced the capacity of two-dimension code under equal print area, can't use under the print area condition of limited greatly in data volume.
The recognition methods mode of image in 2 D code is main with barcode scanner mainly at present.Use barcode scanner identification image in 2 D code in some environments for use, to seem and be not easily, and efficient is low.Usually printing on the file that is processed has a plurality of two-dimension codes, and existing two-dimension code recognition system need be obtained the information of each image in 2 D code on the file when handling these files, so such characteristics have appearred in business procedure: the operator needs to take on the other hand file; On the other hand by each image in 2 D code on barcode scanner scanning document successively; Cause easily closer the time and misread when certain two image in 2 D code is adjacent, at this moment, also need cover an image in 2 D code of having read with blank sheet of paper; Read another image in 2 D code again; Need etc. are just calculated completion after all image in 2 D code all run through, the very loaded down with trivial details effort of this sequence of operations, and what especially will handle is not several papers; But thousands of part the time, such work efficiency and operating characteristic have brought white elephant to operating personnel undoubtedly.
Above-mentioned traffic issues, when inconvenience was to handle file, if every part of file has a plurality of image in 2 D code, then scan operation need be carried out repeatedly, and the decoding of image in 2 D code also need be carried out repeatedly.Can once accomplish if handle the multi-pass operations of a plurality of image in 2 D code of a file, and system can handle by automatic batch when handling many parts of files, and do not need artificial the participation, will increase work efficiency greatly so.
Summary of the invention
The present invention has overcome deficiency of the prior art; A kind of printing and scanning recognition methods and system of VAT invoice two-dimension code are provided; In order to realize join VAT invoices use stylus printers carry out two-dimension code when printing VAT invoice can not punched, improved the quantity of information in the unit print area simultaneously; But and automatic batch scanner uni recognition matrix formula image in 2 D code; When the processing portion contains the file of matrix type two-dimension sign indicating number image; Once obtain the image of view picture file; And can resolve image information with this width of cloth image as input picture, the information that each image in 2 D code comprised on the last output file.
Technical scheme of the present invention: the printing of a kind of VAT invoice two-dimension code of the present invention may further comprise the steps with the scanning recognition methods:
Step 1: with to print VAT invoice content information handle and form a character string;
Step 2: represent binary " a 1 " module through four print points, obtain the matrix type two-dimension sign indicating number of character string, wherein the space is printed in four one of print point spaces;
Step 3: with content information and matrix type two-dimension code printing on VAT invoice;
Step 4: the general image of VAT invoice to be identified is obtained in scanning; And
Step 5: cut out matrix type two-dimension sign indicating number image from general image, again matrix type two-dimension sign indicating number image is carried out decoding processing, the decoded data information of output matrix formula image in 2 D code.
Preferably, in above-mentioned VAT invoice information Method of printing, the next door of matrix type two-dimension sign indicating number has the oblique line from the horizontal by 45.
Preferably, step 1 further comprises:
Step 11: the parameter of scanner is set, comprises the setting of resolution, gray scale and the hot-zone etc. of scanner, thereby reach best scanning effect;
Step 12: scan VAT invoice to be identified, every VAT invoice to be identified is placed on the position, hot-zone, its direction direction is according to the rules placed, and obtains containing the general image of two-dimensional bar array.
Preferably, the parameter of scanner is set, the default value that generally adopts scanner to drive, i.e. 300dpi, 8 gray scales.
Preferably, step 5 may further comprise the steps:
S501: cut out said matrix type two-dimension sign indicating number image according to the position coordinates of said matrix type two-dimension sign indicating number image in said general image;
S502: with said matrix type two-dimension sign indicating number image transitions is binary image;
S503: judge whether said matrix type two-dimension sign indicating number image is white gravoply, with black engraved characters:
If said matrix type two-dimension sign indicating number image all is a white gravoply, with black engraved characters, then skip S504, carry out S505;
If said matrix type two-dimension sign indicating number image is the black matrix wrongly written or mispronounced character, then carry out S504;
S504: with the matrix type two-dimension sign indicating number image transitions of black matrix wrongly written or mispronounced character is the matrix type two-dimension sign indicating number image of white gravoply, with black engraved characters;
S505: the position coordinates that goes out each image in 2 D code in the matrix type two-dimension sign indicating number image according to the view finding Figure recognition;
S506: cut out image in 2 D code according to position coordinates;
S507: call the decoding storehouse image in 2 D code is decoded one by one, extract the decoded data information of this matrix type two-dimension sign indicating number image; And
S508: output decoder data message.
Preferably, above-mentioned decoding storehouse is provided by the third party, and this decoding storehouse comprises the corresponding decoded data information of said image in 2 D code.
The printing and scanning recognition system that a kind of VAT invoice two-dimension code also is provided of the present invention, this system comprises:
PRN device; It is used for the content information of the VAT invoice that will print handle and form a character string; Represent a binary numeral through four print points; Obtain the matrix type two-dimension sign indicating number of said character string, the space is printed in one of wherein said four print point space, and with said content information and said matrix type two-dimension code printing on said VAT invoice;
Scanner, it is used to scan VAT invoice to be identified, obtains the general image of said VAT invoice to be identified; And
Identification equipment is connected with said scanner.
Wherein, said identification equipment comprises:
Scan interface, it is connected with said scanner, and this scan interface is used to receive said general image;
Processor, it is connected with said scan interface, and this processor is used to cut out the matrix type two-dimension sign indicating number image of said general image, more said matrix type two-dimension sign indicating number image is carried out decoding processing, exports the decoded data information of said matrix type two-dimension sign indicating number image; And
Delivery outlet, it is connected with said processor, and this delivery outlet is used to export said decoded data information.
Preferably, scanner was provided with parameter to it earlier before using, comprise the setting of resolution, gray scale and the hot-zone etc. of scanner, thereby reached best scanning effect; The general default value that adopts scanner to drive, promptly resolution is 300dpi (dot per inch, what per inch was printed counts or the line number), 8 gray scales.
Beneficial effect of the present invention: the present invention prints the matrix type two-dimension sign indicating number module of expression binary logic " 1 " through using mode at interval; Can avoid effectively many couplet VAT invoice being used stylus printer it is carried out occurring when two-dimension code is printed the situation that VAT invoice is punched; Make it can be used for a large amount of VAT invoice two-dimension code checkings; Improve the information capacity of unit area simultaneously, overcome the problems of the prior art; The present invention also can discern the situation that contains a plurality of image in 2 D code on a file paper, and recognition efficiency is high, system's batch processing automatically when handling many parts of files, and do not need artificial participation, will raise the efficiency greatly so.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the printing of VAT invoice two-dimension code of the present invention and the process flow diagram of scanning recognition system method;
Fig. 2 is the printing synoptic diagram of module of logical one of an embodiment of the Method of printing of two-dimension code of the present invention;
Fig. 3 is 4 synoptic diagram that adjacent logical one module occurs simultaneously of an embodiment of the Method of printing of two-dimension code of the present invention;
Fig. 4 is the printing synoptic diagram of 3*3 for the cell number of an embodiment of the Method of printing of two-dimension code of the present invention;
Fig. 5 is the matrix type two-dimension sign indicating number VAT invoice sample figure with 45 ° of oblique lines of one embodiment of the invention;
Fig. 6 is the matrix type two-dimension sign indicating number VAT invoice sample figure of 45 ° of oblique lines of nothing of one embodiment of the invention;
Fig. 7 A is the process flow diagram of an embodiment of matrix type two-dimension sign indicating number image scanning recognition methods of the present invention;
Fig. 7 B is the process flow diagram of another embodiment of matrix type two-dimension sign indicating number image scanning recognition methods of the present invention;
Fig. 7 C is the process flow diagram of another embodiment of matrix type two-dimension sign indicating number image scanning recognition methods of the present invention;
Fig. 8 is the printing of VAT invoice two-dimension code of the present invention and the structural drawing of scanning recognition system;
Fig. 9 A is the printing of VAT invoice two-dimension code of the present invention and the structural drawing of an embodiment of the processor of scanning recognition system;
Fig. 9 B is the printing of VAT invoice two-dimension code of the present invention and the structural drawing of another embodiment of the processor of scanning recognition system;
Fig. 9 C is the printing of VAT invoice two-dimension code of the present invention and the structural drawing of another embodiment of the processor of scanning recognition system.
Embodiment
For making the feature and advantage of the present invention can be more obviously understandable, technical scheme of the present invention be done further detailed, clear, intactly explanation below in conjunction with accompanying drawing and specific embodiment.Obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not paying the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Fig. 1 is the printing of VAT invoice two-dimension code of the present invention and the process flow diagram of scanning recognition system method.As shown in Figure 1, this method may further comprise the steps:
Step 1: with to print VAT invoice content information handle and form a character string;
Step 2: represent binary " a 1 " module through four print points, obtain the matrix type two-dimension sign indicating number of character string, wherein the space is printed in four one of print point spaces;
Step 3: with content information and matrix type two-dimension code printing on VAT invoice;
Step 4: the general image of VAT invoice to be identified is obtained in scanning; And
Step 5: cut out the matrix type two-dimension sign indicating number image of general image, again matrix type two-dimension sign indicating number image is carried out decoding processing, the decoded data information of output matrix formula image in 2 D code.
See also Fig. 2, the printing synoptic diagram of the module of the logical one of an embodiment of the Method of printing of two-dimension code of the present invention.Wherein, the print point of 11 expression stylus printers among the figure, the space between 12 expression print points.Present embodiment is represented " a 1 " module through four points; Owing between each print point enough spaces are arranged; The situation of having avoided VAT invoice in print procedure, to be punched fully, and four print points that disperse form a bigger identified region, also are easier to identification.The printing type of 4*4 cell shown in Figure 2 is the minimum unit lattice that this method does not have adjacent intensive printing, is preferred embodiments of the present invention.
See also Fig. 3,4 synoptic diagram that adjacent logical one module occurs simultaneously of an embodiment of the Method of printing of two-dimension code of the present invention.As shown in Figure 3, even in this case, when having used above-mentioned Method of printing that many couplet VAT invoice has been carried out the two-dimension code stylus printing, the situation that VAT invoice is punched can not appear yet.
Embodiments of the invention are applicable to polytype stylus printer, comprise that diameter is 0.18,0.2 to 0.3mm stylus printer.
Print the cell that only needs use 4*4 through the method and just can accomplish the printing function of existing 5*5 cell, therefore under same print needle size, can hold more information as a module as a module.The 4*4 cell is the situation that the minimum in the embodiment of the invention does not have adjacent intensive print point.
Print point in the embodiment of the invention not only is confined to the cell size of 4*4; Also can expand on the cell of multiple of 6*6 or 8*8 etc. 2; Just (n is a positive integer) on the cell of 2n*2n; As long as print area is enough big, can arbitrarily increase according to each concrete operating position.
See also Fig. 4, the cell number of an embodiment of the Method of printing of two-dimension code of the present invention is the printing synoptic diagram of 3*3.As shown in Figure 4; The 3*3 cell is tolerable minimum unit lattice in the embodiment of the invention; The print point of a stylus printer of expression on each angle among Fig. 4, this kind situation is the limit operating position of the embodiment of the invention, when print area is narrow and small, uses; But may run into four adjacent situation that the position all prints; But compare with printing type before, because the situation probability that occurs all carrying out intensive stylus printer in adjacent 4 positions is far smaller than printing type before (as long as presentation logic " 1 " module appears in printing type before, adjacent 4 unit or 9 unit will occur and all carry out intensive printing); Therefore reduced the possibility that VAT invoice is punched, under the acceptable situation, still can use.
In a preferred embodiment of the present invention, the next door of matrix type two-dimension sign indicating number has the oblique line from the horizontal by 45.After printing finishes, with the naked eye just can observe out whether lack row and dislocation,, can find at that time to print again at that time so, can save the property tax personnel's of enterprise time if row and dislocation take place to lack.And in the prior art, selling party leaves the VAT invoice of a band two-dimension code and gives the purchaser, and the purchaser is being with VAT invoice to tax bureau's authentication; If cause authentication not pass through because can't discern; The purchaser need return from tax office and get in touch selling party again and open VAT invoice again so, through the handling back and forth of 3 links, can waste handler's time like this; And present embodiment adopts the scheme of 45 ° of oblique lines to find in advance, thereby avoids this situation.
Fig. 5 is the matrix type two-dimension sign indicating number VAT invoice sample figure with 45 ° of oblique lines of one embodiment of the invention; Fig. 6 is the matrix type two-dimension sign indicating number VAT invoice sample figure of 45 ° of oblique lines of nothing of one embodiment of the invention.
See also Fig. 7 A-7C, step 4 further comprises:
S401: the parameter of scanner is set, comprises the setting of resolution, gray scale and the hot-zone etc. of scanner, thereby reach best scanning effect; And
S402: scan VAT invoice to be identified, every VAT invoice to be identified is placed on the position, hot-zone, its direction direction is according to the rules placed, and obtains containing the general image of two-dimensional bar array.
Preferably, the parameter of scanner is set, the default value that generally adopts scanner to drive, i.e. 300dpi, 8 gray scales.
Preferably, each matrix type two-dimension sign indicating number image all includes four image in 2 D code of arranging side by side.
Please consult Fig. 7 A again, the process flow diagram of an embodiment of matrix type two-dimension sign indicating number image scanning recognition methods of the present invention, above-mentioned steps 5 may further comprise the steps:
S501: cut out said matrix type two-dimension sign indicating number image according to the position coordinates of said matrix type two-dimension sign indicating number image in said general image;
S502: with said matrix type two-dimension sign indicating number image transitions is binary image;
S503: judge whether said matrix type two-dimension sign indicating number image is white gravoply, with black engraved characters:
If said matrix type two-dimension sign indicating number image all is a white gravoply, with black engraved characters, then skip S504, carry out S505;
If said matrix type two-dimension sign indicating number image is the black matrix wrongly written or mispronounced character, then carry out S504;
S504: with the matrix type two-dimension sign indicating number image transitions of black matrix wrongly written or mispronounced character is the matrix type two-dimension sign indicating number image of white gravoply, with black engraved characters;
S505: the position coordinates that goes out each image in 2 D code in the matrix type two-dimension sign indicating number image according to the view finding Figure recognition;
S506: cut out image in 2 D code according to position coordinates;
S507: call the decoding storehouse image in 2 D code is decoded one by one, extract the decoded data information of this matrix type two-dimension sign indicating number image; And
S508: output decoder data message.
Preferably, above-mentioned decoding storehouse is provided by the third party, and this decoding storehouse comprises the corresponding decoded data information of said image in 2 D code.
Please consult Fig. 7 B again, another embodiment of matrix type two-dimension sign indicating number image scanning recognition methods of the present invention, above-mentioned steps 5 may further comprise the steps:
S501: cut out matrix type two-dimension sign indicating number image according to the position coordinates of matrix type two-dimension sign indicating number image in general image;
S502: whether judgment matrix formula image in 2 D code is white gravoply, with black engraved characters;
If above-mentioned matrix type two-dimension sign indicating number image all is a white gravoply, with black engraved characters, then skip S503, carry out S504;
If above-mentioned matrix type two-dimension sign indicating number image is the black matrix wrongly written or mispronounced character, then carry out S503;
S503: the matrix type two-dimension sign indicating number image that the matrix type two-dimension sign indicating number image transitions of black matrix wrongly written or mispronounced character is become white gravoply, with black engraved characters;
S504: the noise pixel of removing above-mentioned matrix type two-dimension sign indicating number image;
S505: with above-mentioned matrix type two-dimension sign indicating number image transitions is binary image;
S506: convert above-mentioned binary image to text, wherein, one group of data message of one group of corresponding text of matrix type two-dimension sign indicating number image;
S507: identification and decoding algorithm according to image in 2 D code split into four segment datas with above-mentioned data message, the corresponding image in 2 D code of each segment data;
S508: call the decoding storehouse the corresponding two-dimension code of above-mentioned data is decoded one by one, extract the decoded data information of matrix type two-dimension sign indicating number image; And
S509: export above-mentioned decoded data information.
Preferably, above-mentioned black and white judges it is through the white space grey scale pixel value of matrix type two-dimension sign indicating number image is judged; If the image pixel gray-scale value that obtains is 0 or near 0, then is the white gray value; If the image pixel gray-scale value that obtains is 255 or near 255, then is the black gray value.
Preferably, the threshold value in the above-mentioned binary conversion treatment is to confirm from actual scanning sampling, as gets 10 this matrix type two-dimension of increment sign indicating number images, is made as threshold values to white space gray scale maximal value wherein, all thinks near 0 less than this.
Preferably, above-mentioned decoding storehouse is the decoding storehouse of same image in 2 D code, is provided by the third party, and it includes the corresponding decoded data information of each image in 2 D code.
Preferably, the decoding failure, variable data is an initial value, then the data message of identification equipment output is hexadecimal FF or 00 entirely.
Please consult Fig. 7 C again, another embodiment of matrix type two-dimension sign indicating number image scanning recognition methods of the present invention, above-mentioned steps 5 may further comprise the steps:
S501: cut out matrix type two-dimension sign indicating number image according to the position coordinates of matrix type two-dimension sign indicating number image in general image;
S502: whether judgment matrix formula image in 2 D code is white gravoply, with black engraved characters;
If above-mentioned matrix type two-dimension sign indicating number image all is a white gravoply, with black engraved characters, then skip S503, carry out S504;
If in the above-mentioned matrix type two-dimension sign indicating number image black matrix wrongly written or mispronounced character is arranged, then carries out S503;
S503: the matrix type two-dimension sign indicating number image that the matrix type two-dimension sign indicating number image transitions of black matrix wrongly written or mispronounced character is become white gravoply, with black engraved characters;
S504: size and position according to each image in 2 D code cut out each image in 2 D code;
S505: the noise pixel of removing above-mentioned image in 2 D code;
S506: convert above-mentioned image in 2 D code into binary image;
S507: convert above-mentioned binary image to text, wherein, one group of data message of one group of corresponding text of said matrix type two-dimension sign indicating number image;
S508: call the decoding storehouse the corresponding image in 2 D code of said data is decoded one by one, extract the decoded data information of matrix type two-dimension sign indicating number image; And
S509: output decoder data message.
Preferably, above-mentioned black and white judges it is through the white space grey scale pixel value of matrix type two-dimension sign indicating number image is judged; If the image pixel gray-scale value that obtains is 0 or near 0, then is the white gray value; If the image pixel gray-scale value that obtains is 255 or near 255, then is the black gray value.
Preferably, the threshold value in the above-mentioned binary conversion treatment is to confirm from actual scanning sampling, as gets 10 this matrix type two-dimension of increment sign indicating number images, is made as threshold values to white space gray scale maximal value wherein, all thinks near 0 less than this.
Preferably, above-mentioned decoding storehouse is the decoding storehouse of same image in 2 D code, is provided by the third party, and it includes the corresponding decoded data information of each image in 2 D code.
Preferably, the decoding failure, variable data is an initial value, then the data message of identification equipment output is hexadecimal FF or 00 entirely.
See also Fig. 8, the printing of VAT invoice two-dimension code of the present invention comprises with the scanning recognition system:
Scanner 2, it is used to scan VAT invoice to be identified, obtains the general image of said VAT invoice to be identified; And
Identification equipment 3 is connected with said scanner 1.
Wherein, above-mentioned PRN device 1 further comprises:
Two-dimensional code generation module 12, it is connected with extraction module 11, is used for representing binary " a 1 " module through four print points, obtains the matrix type two-dimension sign indicating number of character string, and wherein the space is printed in four one of print point spaces; And
Wherein, above-mentioned identification equipment 3 further comprises:
Preferably, each matrix type two-dimension sign indicating number image packets contains four image in 2 D code of arranging side by side.
Preferably, scanner 2 was provided with parameter to it earlier before using, comprise the setting of resolution, gray scale and the hot-zone etc. of scanner 2, thereby reached best scanning effect; The general default value that adopts scanner 2 to drive, promptly resolution is 300dpi (dot per inch, what per inch was printed counts or the line number), 8 gray scales.
See also Fig. 9 A, an embodiment of the processor of the printing of VAT invoice two-dimension code of the present invention and scanning recognition system, above-mentioned processor 32 comprises:
Binary conversion treatment module 3203, it is used for grey scale pixel value with matrix type two-dimension sign indicating number image and converts into through setting threshold and have only 0 and 1 binary image, wherein, 0 expression white, 1 expression black;
Black and white judge module 3204, it is used to judge whether above-mentioned matrix type two-dimension sign indicating number image is white gravoply, with black engraved characters:
If above-mentioned matrix type two-dimension sign indicating number image all is a white gravoply, with black engraved characters, then directly get into identification two-dimension code view finding figure module 3206;
If above-mentioned matrix type two-dimension sign indicating number image is the black matrix wrongly written or mispronounced character, then get into image transitions processing module 3205;
Image transitions processing module 3205, it is used for the grey scale pixel value of the matrix type two-dimension sign indicating number image of black matrix wrongly written or mispronounced character is reversed, and obtains the matrix type two-dimension sign indicating number image of white gravoply, with black engraved characters;
Identification view finding figure module 3206, it is used for going out according to the view finding Figure recognition of two-dimension code the position of each two-dimension code of matrix type two-dimension sign indicating number image;
See also Fig. 9 B, the printing of VAT invoice two-dimension code of the present invention and another embodiment of processor that scans recognition system, above-mentioned processor comprises:
Cut figure processing module 3209, it is used for, and coordinate cuts out matrix type two-dimension sign indicating number image in the fixed position of above-mentioned general image according to matrix type two-dimension sign indicating number image;
Black and white judge module 3204, it is used to judge whether white gravoply, with black engraved characters of above-mentioned matrix type two-dimension sign indicating number image; If this matrix type two-dimension sign indicating number image all is a white gravoply, with black engraved characters, then carry out binary conversion treatment module 3203; If the two-dimension code of this matrix type two-dimension sign indicating number image black matrix wrongly written or mispronounced character then carries out image transitions processing module 3205;
Image transitions processing module 3205, it is used for the grey scale pixel value of the matrix type two-dimension sign indicating number image of above-mentioned black matrix wrongly written or mispronounced character is reversed, and obtains the matrix type two-dimension sign indicating number image of white gravoply, with black engraved characters;
Binary conversion treatment module 3203, it is used for grey scale pixel value with above-mentioned image in 2 D code and converts into through setting threshold and have only 0 and 1 binary image, wherein, 0 expression white, 1 expression black;
Preferably; Processor 32 also comprises a denoising module 3210; The one of which end is connected with image transitions processing module 3205, and the other end is connected with binary conversion treatment module 3203, and it is used for removing the noise pixel that matrix type two-dimension sign indicating number image produces in print procedure and scanning process.
Preferably, the determination methods of black and white judge module 3204 is through the white space grey scale pixel value of matrix type two-dimension sign indicating number image is judged.If the image pixel gray-scale value that obtains is 0 or near 0, then is the white gray value; If the image pixel gray-scale value that obtains is 255 or near 255, then is the black gray value.
Preferably, the threshold value that relates in the binary conversion treatment module 3203 is to confirm from actual scanning sampling, as gets 10 this matrix type two-dimension of increment sign indicating number images, is made as threshold values to white space gray scale maximal value wherein, all thinks near 0 less than this.
Preferably, the decoding storehouse is the decoding storehouse of same two-dimension code, is provided by the third party, wherein includes the corresponding decoded data information of data message of each two-dimension code.
See also Fig. 9 C, the printing of VAT invoice two-dimension code of the present invention and another embodiment of processor that scans recognition system, above-mentioned processor 32 comprises:
Cut figure processing module 3209, it is used for, and coordinate cuts out matrix type two-dimension sign indicating number image in the fixed position of above-mentioned general image according to matrix type two-dimension sign indicating number image;
Black and white judge module 3204, it is used to judge whether above-mentioned matrix type two-dimension sign indicating number image is white gravoply, with black engraved characters; If this matrix type two-dimension sign indicating number image all is a white gravoply, with black engraved characters, then get into deconsolidation process module 3212; If this matrix type two-dimension sign indicating number image is the black matrix wrongly written or mispronounced character, then gets into image transitions and handle 3205;
Image transitions processing module 3205, it is used for the grey scale pixel value of the matrix type two-dimension sign indicating number image of above-mentioned black matrix wrongly written or mispronounced character is reversed, and obtains the matrix type two-dimension sign indicating number image of white gravoply, with black engraved characters;
Binary conversion treatment module 3203 converts the grey scale pixel value of above-mentioned image in 2 D code into and to have only 0 and 1 binary image through setting threshold, wherein, and 0 expression white, 1 expression black;
Preferably; Above-mentioned processor 32 also comprises a denoising module 3210; The one of which end is connected 3204 with the deconsolidation process module, and the other end is connected 3203 with the binary conversion treatment module, and it is used for removing the noise pixel that matrix type two-dimension sign indicating number image produces in print procedure and scanning process.
Preferably, the determination methods of black and white judge module 3204 is through the white space grey scale pixel value of matrix type two-dimension sign indicating number image is judged.If the image pixel gray-scale value that obtains is 0 or near 0, then is the white gray value; If the image pixel gray-scale value that obtains is 255 or near 255, then is the black gray value.
Preferably, the threshold value that relates in the binary conversion treatment module 3203 is to confirm from actual scanning sampling, as gets 10 this matrix type two-dimension of increment sign indicating number images, is made as threshold values to white space gray scale maximal value wherein, all thinks near 0 less than this.
Preferably, the decoding storehouse is the decoding storehouse of same two-dimension code, is provided by the third party, wherein includes the corresponding decoded data information of data message of each two-dimension code.
The present invention prints the matrix type two-dimension sign indicating number module of expression binary logic " 1 " through using mode at interval; Can avoid effectively many couplet VAT invoice being used stylus printer it is carried out occurring when two-dimension code is printed the situation that VAT invoice is punched; Make it can be used for a large amount of VAT invoice two-dimension code checkings; Improve the information capacity of unit area simultaneously, overcome the problems of the prior art.
For example; In the above-described embodiments; VAT invoice information printing equipment can also comprise: the oblique line generation module; Be used to generate an oblique line, this oblique line is positioned at the next door of matrix type two-dimension sign indicating number and from the horizontal by 45, and through print module this oblique line is printed on the VAT invoice.After printing finishes, with the naked eye just can observe out whether lack row and dislocation,, can find at that time to print again at that time so, can save the property tax personnel's of enterprise time if row and dislocation take place to lack.And in the prior art, selling party leaves the VAT invoice of a band two-dimension code and gives the purchaser, and the purchaser is being with VAT invoice to tax bureau's authentication; If cause authentication not pass through because can't discern; The purchaser need return from tax office and get in touch selling party again and open VAT invoice again so, through the handling back and forth of 3 links, can waste handler's time like this; And present embodiment adopts the scheme of 45 ° of oblique lines to find in advance, thereby avoids this situation.
The software of making out an invoice is installed on billing machine; The personnel that make out an invoice import the information of making out an invoice; The software of making out an invoice sends to two-dimensional code generation module with the nominal value type information, in internal memory, sets up a printer page identical with the VAT invoice area simultaneously, writes corresponding position to the nominal value type information by position separately; Two-dimensional code generation module changes into the two-dimension code dot chart with the data of importing and also writes in this page; So just built up a complete printer page, clicked the printing function of the software of making out an invoice, started the current VAT invoice page of building up in the internal memory is outputed to printer prints according to the operating personnel that make out an invoice.A complete printed VAT invoice example is seen accompanying drawing 5 or accompanying drawing 6.The difference of accompanying drawing 5 and accompanying drawing 6 is 45 degree broken lines, is used for when artificial naked eyes are judged the current VAT invoice of printer prints whether the row of lacking being arranged, row, overline etc. misplace.45 degree broken lines are generated the generation module generation and are written to the printer page in the internal memory by oblique line, whether add this broken line and can pass through a parameter setting.
When a VAT invoice of being left by this programme billing machine carries out authentication business; Authentication software obtains complete VAT invoice image through scanner scanning earlier; Then image is sent into OCR (Optical Character Recognition, optical character identification) software for discerning characters module respectively and two-dimension code identification software module is carried out analyzing and processing, the nominal value printing character content A on the OCR software for discerning characters module output VAT special invoice image; The data that two-dimensional code symbol comprises on the two-dimension code identification software module output VAT special invoice image; Return nominal value clear content B, two clear content A of authentication software contrast and B, identical then authentication is passed through; Difference then authentication is not passed through, and realizes the false proof of VAT invoice ticket information with this.
The two-dimension code that relates in the embodiment of the invention generates and recognition technology has the ready-made national standard can foundation, and detailed two-dimension code decoding method has been set forth in the inside, repeats no more at this.
One of ordinary skill in the art will appreciate that: accompanying drawing is the synoptic diagram of an embodiment, and module in the accompanying drawing or flow process might not be that embodiment of the present invention is necessary.
One of ordinary skill in the art will appreciate that: the module in the system among the embodiment can be described according to embodiment and be distributed in the device of embodiment, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.
The invention described above embodiment sequence number is not represented the quality of embodiment just to description.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be accomplished through the relevant hardware of programmed instruction; Aforesaid program can be stored in the computer read/write memory medium; This program the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
What should explain at last is: above embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that previous embodiment is put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of the essence disengaging embodiment of the invention technical scheme of relevant art scheme.
Claims (7)
1. the printing of a VAT invoice two-dimension code and scanning recognition methods is characterized in that, may further comprise the steps:
Step 1: with to print VAT invoice content information handle and form a character string;
Step 2: represent binary " a 1 " module through four print points, obtain the matrix type two-dimension sign indicating number of said character string, the space is printed in one of wherein said four print point space;
Step 3: with said content information and said matrix type two-dimension code printing on said VAT invoice;
Step 4: the general image of VAT invoice to be identified is obtained in scanning; And
Step 5: cut out matrix type two-dimension sign indicating number image from said general image, more said matrix type two-dimension sign indicating number image is carried out decoding processing, export the decoded data information of said matrix type two-dimension sign indicating number image.
2. according to the printing and scanning recognition methods of the said VAT invoice two-dimension code of claim 1, it is characterized in that step 5 may further comprise the steps:
S501: cut out said matrix type two-dimension sign indicating number image according to the position coordinates of said matrix type two-dimension sign indicating number image in said general image;
S502: with said matrix type two-dimension sign indicating number image transitions is binary image;
S503: judge whether said matrix type two-dimension sign indicating number image is white gravoply, with black engraved characters:
If said matrix type two-dimension sign indicating number image all is a white gravoply, with black engraved characters, then skip S504, carry out S505;
If said matrix type two-dimension sign indicating number image is the black matrix wrongly written or mispronounced character, then carry out S504;
S504: with the matrix type two-dimension sign indicating number image transitions of black matrix wrongly written or mispronounced character is the matrix type two-dimension sign indicating number image of white gravoply, with black engraved characters;
S505: the position coordinates that goes out each image in 2 D code in the said matrix type two-dimension sign indicating number image according to the view finding Figure recognition;
S506: cut out said image in 2 D code according to said position coordinates;
S507: call the decoding storehouse said image in 2 D code is decoded one by one, extract the decoded data information of this matrix type two-dimension sign indicating number image; And
S508: export said decoded data information.
3. according to the printing and scanning recognition methods of the said VAT invoice two-dimension code of claim 1, it is characterized in that said step 5 may further comprise the steps:
S501: cut out said matrix type two-dimension sign indicating number image according to the position coordinates of said matrix type two-dimension sign indicating number image in said general image;
S502: judge whether said matrix type two-dimension sign indicating number image is white gravoply, with black engraved characters:
If said matrix type two-dimension sign indicating number image all is a white gravoply, with black engraved characters, then skip S503, carry out S504;
If said matrix type two-dimension sign indicating number image is the black matrix wrongly written or mispronounced character, then carry out S33;
S503: the matrix type two-dimension sign indicating number image that the matrix type two-dimension sign indicating number image transitions of black matrix wrongly written or mispronounced character is become white gravoply, with black engraved characters;
S504: the noise pixel of removing said matrix type two-dimension sign indicating number image;
S505: with said matrix type two-dimension sign indicating number image transitions is binary image;
S506: convert said binary image to text, wherein, one group of data message of one group of corresponding said text of said matrix type two-dimension sign indicating number image;
S507: identification and decoding algorithm according to said image in 2 D code split into four segment datas with said data message, the corresponding said image in 2 D code of the said data of each section;
S508: call the decoding storehouse the corresponding image in 2 D code of said data is decoded one by one, extract the decoded data information of said matrix type two-dimension sign indicating number image; And
S509: export said decoded data information.
4. according to the printing and scanning recognition methods of the said VAT invoice two-dimension code of claim 1, it is characterized in that said step 5 may further comprise the steps:
S501: cut out said matrix type two-dimension sign indicating number image according to the position coordinates of said matrix type two-dimension sign indicating number image in said general image;
S502: judge whether said matrix type two-dimension sign indicating number image is white gravoply, with black engraved characters;
If said matrix type two-dimension sign indicating number image all is a white gravoply, with black engraved characters, then skip S503, carry out S504;
If in the said matrix type two-dimension sign indicating number image black matrix wrongly written or mispronounced character is arranged, then carries out S503;
S503: the matrix type two-dimension sign indicating number image that the matrix type two-dimension sign indicating number image transitions of black matrix wrongly written or mispronounced character is become white gravoply, with black engraved characters;
S504: size and position according to each image in 2 D code cut out each image in 2 D code;
S505: the noise pixel of removing said image in 2 D code;
S506: convert said image in 2 D code into binary image;
S507: convert said binary image to text, wherein, one group of data message of one group of corresponding said text of said matrix type two-dimension sign indicating number image;
S508: call the decoding storehouse the corresponding image in 2 D code of said data is decoded one by one, extract the decoded data information of said matrix type two-dimension sign indicating number image; And
S509: export said decoded data information.
5. according to the printing and scanning recognition methods of claim 2,3 or 4 said VAT invoice two-dimension codes, it is characterized in that the next door of said matrix type two-dimension sign indicating number has the oblique line from the horizontal by 45.
6. according to the printing and scanning recognition methods of claim 2,3 or 4 said VAT invoice two-dimension codes, it is characterized in that said decoding storehouse is provided by the third party, this decoding storehouse comprises the corresponding decoded data information of said image in 2 D code.
7. the printing of a VAT invoice two-dimension code and scanning recognition system is characterized in that, comprising:
PRN device; It is used for the content information of the VAT invoice that will print handle and form a character string; Represent binary " a 1 " module through four print points; Obtain the matrix type two-dimension sign indicating number of said character string, the space is printed in one of wherein said four print point space, and with said content information and said matrix type two-dimension code printing on said VAT invoice;
Scanner, it is used to scan VAT invoice to be identified, obtains the general image of said VAT invoice to be identified; And
Identification equipment is connected with said scanner;
Wherein, said identification equipment comprises:
Scan interface, it is connected with said scanner, and this scan interface is used to receive said general image;
Processor, it is connected with said scan interface, and this processor is used to cut out the matrix type two-dimension sign indicating number image of said general image, more said matrix type two-dimension sign indicating number image is carried out decoding processing, exports the decoded data information of said matrix type two-dimension sign indicating number image; And
Delivery outlet, it is connected with said processor, and this delivery outlet is used to export said decoded data information.
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| CN2010105102484A CN102446264A (en) | 2010-10-15 | 2010-10-15 | Printing and scanning recognition method and system for two-dimensional code of special value-added tax invoice |
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Application publication date: 20120509 |