CN1953362A - A method and installation to embed pattern in two-dimensional bar code - Google Patents
A method and installation to embed pattern in two-dimensional bar code Download PDFInfo
- Publication number
- CN1953362A CN1953362A CN 200610138179 CN200610138179A CN1953362A CN 1953362 A CN1953362 A CN 1953362A CN 200610138179 CN200610138179 CN 200610138179 CN 200610138179 A CN200610138179 A CN 200610138179A CN 1953362 A CN1953362 A CN 1953362A
- Authority
- CN
- China
- Prior art keywords
- pattern
- bar code
- dimensional bar
- embedded
- resolution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Editing Of Facsimile Originals (AREA)
Abstract
The invention relates to a method for embedding image into two-dimension bar code and relative device. Wherein, said method comprises that presetting two-dimension bar code, wait embedded image, and embed position; finding contrast image whose resolution is same as two-dimension bar code; based on the embed position, comparing the color of relative modules in contrast image and the two-dimension bar code, and calculating the module number with differential color; if the number is not higher than preset correct threshold value, fixing the embed image, and embedding image into bar code. The invention can embed recognized image into two-dimension bar code, without print, to save resource.
Description
Technical field
The present invention relates to data communication field, particularly relate to the field of channel coding in the data communication.
Background technology
Two-dimensional bar code (2-dimensional bar code) is a kind of information stores and transmission technology, and it uses certain specific geometric figure chequered with black and white graphic recording data symbol information that (on the two-dimensional directional) distributes on the plane according to certain rules; It utilizes " 0 ", the notion of " 1 " bit stream that constitutes the computer-internal logical foundations on coding, use several and the corresponding geometrical body of binary system to represent the literal numerical information, handle automatically with realization information by image input device or photoelectric scanning device automatically identifying and reading.
Two-dimensional bar code can be divided into stack/row row formula two-dimensional bar code and matrix two-dimensional barcode two classes.Stack/row row formula two-dimensional bar code is formed by the bar code layer row of many brachymemmas, and stack/row row formula two-dimensional bar code commonly used has: Code16K, Code49, PDF417 etc.Matrix two-dimensional barcode is the coding that is undertaken by black, the different distributions of white pixel in matrix at a coffin, and matrix two-dimensional barcode commonly used has: Code Onc, Maxi Code, QR Code, Data Matrix etc.
Two-dimensional bar code has following advantage: adopt the high density coding, information capacity is big, but 1850 capitalizations of outfit as many as or 2710 numerals or 1108 bytes, or more than 500 Chinese character, higher approximately tens times than bar code information capacity.Coding range is wide, can digitized information encode picture, sound, literal, signature, fingerprint etc., shows with bar code, can also represent multilingual writings and image data.Fault-tolerant ability is strong, has error correction.Reliability of decode height, the error rate are no more than 1/10000000th.Can introduce encryption measures, have confidentiality, antifalsification is good.Cost is low, easily makes durable.Bar code symbol shape, size variable-scale.Can use the recognition of laser or CCD reader.
At present, two-dimensional bar code is widely used in a plurality of fields such as national defence, public safety, communications and transportation, health care, industry, commerce, finance, customs and governability.
The recognizing apparatus of two-dimensional bar code is an optical device; identifying is affected by environment bigger; therefore in the process that the data message of two-dimensional bar code is encoded, can add redundant error correcting code usually; can utilize certain error correction algorithm that primary data information (pdi) is handled, generate corresponding error correcting code, primary data information (pdi) and error correcting code are combined; generate two-dimensional bar code; make that data error can be detected by the error correction decoding system within the error correction scope, the location was also corrected and was adopted, and realized correctly reading of information.(fast matrix two-dimensional bar code) is example as QR Code, adopted Reed Solomon error correction algorithm, the standard code of QR Code four error-correction level, its error correction scope is respectively 7%, 15%, 25%, 30%, the mistake in these error correction scopes all can be by error correction decoding system compensation.
But because the entrained information of two-dimensional bar code can only be used for image input device or photoelectric scanning device automatically identifying and reading, just can demonstrate information after the decoding for human identification, human can't directly understand information in the two-dimensional bar code by naked eyes, cause the inconvenience in the daily use, therefore in the use of two-dimensional bar code, usually need around its figure, add some comments or pattern, point out out the partial information of two-dimensional bar code or directly disclose the entrained information content of two-dimensional bar code, supply the user directly to understand the implication of two-dimensional bar code, it is simply handled with convenient.This shortcoming that adds some comments or pattern mode around two-dimensional bar code is: need issue associated comment or pattern simultaneously during the issue two-dimensional bar code, need anticipate comment or pattern, may need to print, print, paste or scribe comment or pattern then, affected process labor intensive, material resources; The extra area that comment or pattern have also taken has reduced the usable area on two-dimensional bar code belongings (as commodity) surfaces, has reduced the printable amount of information in belongings surface.
Summary of the invention
Technical problem to be solved by this invention provides a kind of visual method of patterning and device of embedding in two-dimensional bar code, to solve the problem that needs additionally to issue literal, manufacturing process consumes resources and reduced the usable area on belongings surfaces in the prior art.
In order to address the above problem, the present invention proposes a kind of method of patterning that in two-dimensional bar code, embeds, comprise the following steps:
Preset two-dimensional bar code, pattern to be embedded and embedded location;
Determine contrast patterns, described contrast patterns is identical with the resolution of described two-dimensional bar code;
According to described embedded location, the color of corresponding module in more described contrast patterns and the described two-dimensional bar code, the module number of color mistake takes place in statistics;
If described module number does not surpass the error correction threshold value that presets, then;
Determine to embed pattern, and described embedding pattern is embedded in the described two-dimensional bar code according to preassigned embedded location.
Wherein, when the resolution of the resolution of described pattern to be embedded and described two-dimensional bar code was consistent, described contrast patterns was described pattern to be embedded.When the resolution of the resolution of described pattern to be embedded and described two-dimensional bar code was inconsistent, described contrast patterns was for will described pattern to be embedded carrying out pattern after the rasterizing processing according to the resolution of described two-dimensional bar code.
Wherein, described embedding pattern can be described pattern to be embedded; Perhaps, described pattern to be embedded handle is adjusted pattern after the resolution by rasterizing.
Preferably, described method can also comprise: according to preassigned embedded location, judge whether described embedding pattern covers described two-dimensional bar code control character unit area, if not, then continue to embed flow process.
Preferably, described method can also comprise: if described pattern to be embedded is a multicolour pattern, each module color of described contrast patterns is carried out binary conversion treatment.
The present invention also provides a kind of device that embeds pattern in two-dimensional bar code, comprising:
Interface unit is used to receive two-dimensional bar code, pattern to be embedded and embedded location, and output has embedded the two-dimensional bar code of pattern;
Analytic unit is used for determining contrast patterns, and the color that contrasts the respective modules of described contrast patterns and described two-dimensional bar code, and the module number of color mistake takes place statistics;
The error correction judging unit is used to judge whether the module number of described generation color mistake surpasses the error correction threshold value that presets, and if not, sends and embeds instruction to embedding the unit; Described error correction threshold value is less than or equal to the error correction capability of two-dimensional bar code;
Embed the unit, be used for receiving embedding and instruct, and, determine to embed pattern, described embedding pattern is embedded in the described two-dimensional bar code according to preassigned embedded location according to described embedding instruction.
Preferably, described device can also comprise: the rasterizing processing unit is used for that described pattern to be embedded is carried out rasterizing according to the resolution of resolution that sets in advance or described two-dimensional bar code and handles.
Preferably, described device can also comprise: the resolution judging unit is used to judge whether the resolution of the resolution of described pattern to be embedded and described two-dimensional bar code is consistent; The process of described definite contrast patterns is: whether the resolution by the resolution of the described pattern to be embedded of resolution judgment unit judges and described two-dimensional bar code is consistent, if it is consistent, with described pattern to be embedded pattern as a comparison, if not, by the rasterizing processing unit described pattern to be embedded is carried out pattern pattern as a comparison after rasterizing is handled according to the resolution of described two-dimensional bar code.
Preferably, described embedding pattern can be described pattern to be embedded; Perhaps, described pattern to be embedded handle is adjusted pattern after the resolution by rasterizing.
Preferably, described device can also comprise: cover judging unit, be used for according to preassigned embedded location, judge whether described embedding pattern covers described two-dimensional bar code control character unit area, if not, then continue to embed flow process.
Preferably, described device can also comprise: binarization unit, be used for when described pattern to be embedded is multicolour pattern, and each module color of described contrast patterns is carried out binary conversion treatment.
Preferably, described device can also comprise: the two-dimensional bar code coding unit is used for the input data generation two-dimensional bar code of encoding.
The invention also discloses another kind and in two-dimensional bar code, embed method of patterning, comprise the following steps:
Preset pattern to be embedded, two-dimensional bar code and embedded location;
According to embedded location described pattern to be embedded is embedded in the described two-dimensional bar code;
Adjust in the described pattern to be embedded with described two-dimensional bar code in the pattern parameter of dark module correspondence position, the color of this module is dark after the adjustment; Adjust in the described pattern to be embedded with described two-dimensional bar code in the pattern parameter of light module correspondence position, the color of this module is a light color after the adjustment; Wherein, described pattern parameter is arbitrary parameter or the combination in any in brightness, contrast, the color saturation.
The also claimed a kind of device that embeds pattern in two-dimensional bar code of the present invention comprises:
Interface unit is used to receive pattern to be embedded, two-dimensional bar code and embedded location, and output has the two-dimensional bar code of pattern;
Embed the unit, be used for described pattern to be embedded is embedded into described two-dimensional bar code;
The pattern parameter adjustment unit is used for adjusting the pattern parameter of dark module correspondence position in described pattern to be embedded and the described two-dimensional bar code, and the color of this module is dark after the adjustment; Adjust in the described pattern to be embedded with described two-dimensional bar code in the pattern parameter of light module correspondence position, the color of this module is a light color after the adjustment; Wherein, described pattern parameter is arbitrary parameter or the combination in any in brightness, contrast, the color saturation.
Preferably, described device can also comprise: the two-dimensional bar code coding unit is used for the input data generation two-dimensional bar code of encoding.
Compared with prior art, the present invention has the following advantages:
1, with the mankind can Direct Recognition pattern-information embed in the two-dimensional bar code, do not influence the automatic identification of two-dimensional bar code, do not need extra printing or print explanation figure or literal, area occupied is little, economizes on resources, the convenient use can increase the information efficiency of publishing.
2, can embed human appreciable various symbols, make the two-dimensional bar code novel form lively, be convenient to the human represented information of two-dimensional bar code of obtaining intuitively.
3, both can embed the pattern identical with two-dimensional bar code resolution, also can the different pattern of resolution.
4, both black can be embedded, also multicolour pattern can be embedded.
Description of drawings
Fig. 1 is a method flow diagram of the present invention;
Fig. 2 is method embodiment 1 flow chart of the present invention;
Fig. 3 a is method embodiment 2 flow charts of the present invention;
Fig. 3 b is the two-dimensional bar code after method embodiment 2 of the present invention embeds pattern;
Fig. 4 a is method embodiment 3 flow charts of the present invention;
Fig. 4 b is the two-dimensional bar code after method embodiment 3 of the present invention embeds pattern;
Fig. 5 is method embodiment 4 flow charts of the present invention;
Fig. 6 a is method embodiment 5 flow charts of the present invention;
Fig. 6 b is the two-dimensional bar code after method embodiment 5 of the present invention embeds pattern;
Fig. 7 is device embodiment 1 block diagram of the present invention;
Fig. 8 is device embodiment 2 block diagrams of the present invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, at first some terms that the present invention relates to are described.
For image, the size of its resolution has determined the readability of image, resolution generally adopts the pixel number on unit length and the width to represent, as, the resolution of scanner represents that with the pixel number on the per inch length unit is DPI (DotPer Inch, the per inch pixel), DPI is many more, and image is clear more, and at present common office is 600 (horizontal resolution) * 1200 (vertical resolution), 1200 * 2400 or 2400 * 2400 with the resolution of scanner.
Resolution for two-dimensional bar code, (hereinafter referred to as QR Code) is example with quick response codes, it is the two-dimensional bar code that belongs to matrix form, QR Code is made up of some blockages with depth color, these blockages are called module, dark module can be represented binary " 1 ", and light module can be represented binary zero, just can represent information by the combination of these depth color module.For QR Code, because its minimum image unit is a module, and each inside modules has only a kind of color, can think that a module in the QR Codc image is exactly its pixel, so its resolution can be represented with horizontal and vertical module number, as for the horizontal and vertical QR Code that 21 modules are all arranged, its resolution can be expressed as 21 * 21, and horizontal and vertical for another example all have 101 modules, and its resolution can be expressed as 101 * 101.
For a specific QR Code, also can be regarded as by a plurality of grids and form, comprise a module in each grid.When an image is carried out the rasterizing processing, with this image division be and the described specific identical grid distribution (being identical resolution) of QR Codc, if there is multiple color in the topography in each grid, then according to the weighted average algorithm of color value, for example:
Suppose image I, wherein certain color of pixel value is that (x, y), x and y are respectively the two-dimensional coordinate value of this pixel in image I to I.
For image I, the computational methods of its weighted average color value are: all the color of pixel values number of sum divided by all pixels among the I that add up wherein.
Obtain a color value, promptly have only a color in a grid, can think that then pattern after treatment has identical resolution with QR Code, the size of their each grid also is identical.As seen prediction, through the picture after the rasterizing processing, its resolution both might be raised also and might be lowered.
Can adopt binaryzation algorithm in the image processing algorithm for binarization processing of images, promptly delimiting a threshold values distinguishes color value, this threshold values is a numerical value, for two-dimensional bar code, if the color value of a module is greater than this threshold values, then this module just is defined as dark module, otherwise, then be defined as light module.As seen adopt the binaryzation algorithm any Color Image Processing can be become the image of two kinds of colors of the depth.
Below in conjunction with accompanying drawing realization principle of the present invention and specific embodiment are elaborated.
Principle of the present invention is to utilize the error correction characteristic of two-dimensional bar code, and visual pattern is added in the two-dimensional bar code pattern, for two-dimensional bar code has added human discernible graphical information.After pattern is embedded into two-dimensional bar code, a part of module color of two-dimensional bar code is changed, mistake has appearred in some data bit that is equivalent to entrained information, if these mistakes are within the error correction capability of two-dimension code, decode system just can detect and correct these mistakes, the information that comprises that guarantees two-dimensional bar code is come out by complete decoding, thereby does not influence the normal use of two-dimensional bar code.The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
With reference to Fig. 1, be method flow diagram of the present invention, comprising:
Step 101 presets pattern to be embedded, two-dimensional bar code and embedded location.
Pattern can be black and white or colored, can with described two-dimensional bar code with resolution, or different resolution.When pattern dimension to be embedded is bigger, can first minification, embed with convenient.Two-dimensional bar code can be a kind of in existing stack/row row formula two-dimensional bar code or the matrix two-dimensional barcode, in general the color that comprises of two-dimensional bar code is black and white, it also can be any other two dark-and-light colour, as long as recognizing apparatus scanning two-dimension bar code, can determine after binary conversion treatment that suitable color threshold values identifies entrained information and gets final product, two-dimensional bar code is that what concrete color does not influence carrying and discerning of information.Embedded location can adopt the coordinate position of the upper left corner in two-dimensional bar code of pattern to be embedded to represent.
Step 102 is determined contrast patterns, and described contrast patterns is identical with the resolution of described two-dimensional bar code.
Preferably, when the resolution of the resolution of described pattern to be embedded and described two-dimensional bar code was consistent, described contrast patterns was described pattern to be embedded.
Preferably, when the resolution of the resolution of described pattern to be embedded and described two-dimensional bar code was inconsistent, described contrast patterns was for will described pattern to be embedded carrying out pattern after the rasterizing processing according to the resolution of described two-dimensional bar code.The resolution of handling the back pattern through rasterizing may be to have descended, and also may be to have risen, the main purpose that rasterizing is handled be the resolution processes of contrast patterns is become consistent with the resolution of two-dimensional bar code, with the convenient relatively color value of respective modules.
In fact, because module dark in the two-dimension code is represented binary " 1 ", the light color module is represented binary zero, just can represent information by the combination of these depth color module, changes light color into only otherwise with dark color or light color changed into darkly just can not influence reading of two-dimensional bar code.According to step 102, contrast patterns has been processed into identical grid and has distributed, and each grid has only a color, so color relatively the time, only relatively whether the uneven color of contrast patterns distributes and exists mistake to get final product with two-dimensional bar code.
Detailed process relatively is exemplified below, and supposes that the color value of the two dark-and-light colour pattern of two-dimensional bar code is: light color is 255, dark color is 0.The boundary threshold values of identification two dark-and-light colour is 127, and under the situation of preassigned embedded location, the color comparison procedure of the module of contrast patterns and two-dimensional bar code correspondence is as follows:
For first module of two-dimensional bar code, color value is 255 (light color), and the color value of the contrast patterns of correspondence position is 100 (dark partially), through 100 and threshold values 127 relatively, belong to dark, light different with the two-dimensional bar code module, recording error is 1;
For second module of two-dimensional bar code, color value is 255 (light color), and the color value of the contrast patterns of correspondence position is 200 (light color partially), through 200 and threshold values 127 relatively, belong to light color, light identical with the two-dimensional bar code module, recording error is 0;
For n module of two-dimensional bar code, error is Δ n, and the value of Δ n is 0 or is 1;
After contrasting the color value of all modules, can obtain cumulative errors ∑ Δ=Δ 1+ Δ 2+...+ Δ n, cumulative errors are absolute figures, reflection be after embedding pattern, the module number of the color change of the two-dimensional bar code that causes is a metric to the destructiveness of two-dimensional bar code.
Above-mentioned example has provided a detailed comparison procedure, can adopt more easy comparison process in the actual treatment, as long as meet the fault-tolerant principle of two-dimensional bar code.
Preferably, if described pattern to be embedded is a multicolour pattern, then described contrast patterns need be carried out binary conversion treatment, and the contrast patterns after the processing becomes the two dark-and-light colour pattern, for example, can carry out contrast patterns to obtain the black-and-white two color pattern after the binary conversion treatment.
Step 103 if described module number does not surpass the error correction capability of two-dimensional bar code, is determined to embed pattern, and described embedding pattern is embedded in the described two-dimensional bar code according to preassigned embedded location.
For two-dimensional bar code, for avoid part stained cause can not be by recognition of devices, itself all has certain error correcting capability, promptly when within the error correcting capability of module color change at two-dimensional bar code of the two-dimensional bar code that stained part causes, can correct a mistake the entrained information of complete reproduction two-dimensional bar code by the error correction algorithm of two-dimensional bar code.The error correction capability of two-dimensional bar code is an absolute figure, allows to take place the number of modules of color mistake in the specific two-dimensional bar code of certain of representative.
For the two-dimensional bar code that presets, we can obtain its parameters such as coded system by decoding, also can obtain the information such as control character unit area, error correction capability of two-dimensional bar code.For the two-dimensional bar code that we generate voluntarily according to initial parameter, in generative process, these parameters can obtain by the two-dimensional bar code coding device.
If the ∑ Δ that counts during previous step is rapid does not surpass the error correction capability of two-dimensional bar code, think that then the information in the two-dimensional bar code that embeds pattern can be correctly validated, then confirm to embed pattern, be embedded in the described two-dimensional bar code according to preassigned embedded location.Certainly, preferred in order to guarantee not damage two-dimensional bar code, can preset an error correction threshold value, this error correction threshold value is no more than the error correction capability of this two-dimensional bar code, and whether the error in judgement value during super scope, compares with the above-mentioned error correction threshold value that presets to get final product.
Preferably, described embedding pattern is described pattern to be embedded itself or described pattern to be embedded handle is adjusted pattern after the resolution by rasterizing.Can specify the pattern of needs embedding according to concrete needs in advance by the user.
Preferably, above-mentioned steps also comprises according to preassigned embedded location, judge whether described embedding pattern has covered described two-dimensional bar code control character unit area, if not, then continues to embed flow process, if embed failure.Can readjust the position of embedding this moment, embeds again.This determining step can be before step 102, between step 102 and the step 103 or carry out after the step 103.
Two-dimensional bar code has many types, and generally speaking, its control unit is meant the graphic symbol that is used for determining two-dimensional bar code graph position and direction, three of the QR sign indicating number buphthalmos symbols (position sensing figure) for example, also comprise position sensing figure marker space, positioning pattern, correction graph etc.In addition, control unit may also comprise some parameters of describing the two-dimensional bar code characteristic, such as the size version, and mask-type, error-correction level or the like, format information district for example, version information district.If make mistakes in these places, can exert an influence to the two-dimensional bar code decode procedure, cause and to be correctly decoded, so must obtain the position at these control unit places in advance, do not cover the zone at these control unit places when guaranteeing to embed pattern, perhaps do not hinder the information of these control units to read.If the control area of existing two-dimensional bar code, then probably can't be discerned whole sign indicating number by stained.
With reference to Fig. 2, it is method embodiment 1 flow chart of the present invention, to different situations be that example is introduced with the resolution of pattern to be embedded and two-dimensional bar code in the present embodiment, wherein contrast patterns and embedding pattern are that pattern to be embedded carries out the pattern after rasterizing is handled, and embodiment 1 specifically may further comprise the steps:
Step 201 is carried out two-dimensional bar code coding to the initial data that presets and is obtained two-dimensional bar code, and obtains position, described two-dimensional bar code control character unit area.
The described initial data that presets is the data that need be coded in the two-dimensional bar code, initial data is encoded by user's specified coding mode, coded system can adopt the various coded systems of existing two-dimensional bar code as required, as Codc16K, Code49, PDF417 etc., can obtain the information such as version number, error correction capability and sign indicating number control character unit area of two-dimensional bar code behind the coding.Certainly, described two-dimensional bar code also can be to receive the two-dimensional bar code that other encoders generate, and obtains relevant parameter by decoding again.
Step 202 is carried out the rasterizing processing to the pattern to be embedded that presets and is obtained the rasterizing pattern.
Because the resolution of pattern to be embedded and two-dimensional bar code is different, needs earlier pattern to be embedded to be carried out rasterizing and handle.Carry out rasterizing when handling, handle according to the resolution of two-dimensional bar code, obtain the rasterizing pattern with the two-dimensional bar code equal resolution, the rasterizing pattern that obtains here may descend to some extent than the resolution of pattern to be embedded.
Step 203 as embedding pattern, according to preassigned embedded location, judges whether described embedding pattern has covered described two-dimensional bar code control character unit area with the rasterizing pattern.
It can be that certain specified point (for example upper left corner) is positioned at the coordinate figure on the two-dimensional bar code on the appointment pattern to be embedded that the user specifies embedded location, and this coordinate figure is represented with the position of two-dimensional bar code module.For example: the coordinate of the module in the two-dimensional bar code upper left corner is defined as (0,0), and reference axis is to be the forward increase to the right downwards.If we will be placed on (10 embedding pattern, 10) position, be placed on from the two-dimensional bar code upper left corner and begin several the 11st downwards embedding the pattern upper left corner exactly, on several to the right the 11st modules, so just be embedded on the two-dimensional bar code according to appointed positions embedding pattern.The size that embeds pattern is known in advance, the position at the place, control character unit area of two-dimensional bar code is by obtaining in the previous step, by both relative positions, can judge and embed the position whether pattern has covered the control character unit area of two-dimensional bar code.
If described embedding pattern cover described two-dimensional bar code control character unit area, execution in step 204, if not, execution in step 205.
Step 204 embeds failure, need readjust parameter.
By the narration of front as can be known,, can cause whole two-dimensional bar code not to be read, embed the pattern failure this moment if the position of the control character unit area of two-dimensional bar code is capped.Can adjust the initial parameter preset by the user,, carry out the embedding of pattern once more as the embedded location of appointment etc.
Step 205 with rasterizing pattern pattern as a comparison, contrasts the color value of the respective modules of described contrast patterns and described two-dimensional bar code, judges whether the different module number of color value surpasses the error correction capability of two-dimensional bar code.
Contrast the color value of the respective modules of described contrast patterns and two-dimensional bar code,, be designated as 0 if identical, difference is designated as 1, and after relatively finishing, statistics is the number of 1 module, and and the error correction capability of two-dimensional bar code compare, whether the error in judgement number surpasses the error correction capability of two-dimensional bar code.When margin of error exceeds the error correction capability of two-dimensional bar code, the recognizing apparatus of two-dimensional bar code can not be discerned the correct information that obtains.If surpass the error correction capability of two-dimensional bar code, execution in step 204, if not, execution in step 206.
Certainly, preferred in order to guarantee not damage two-dimensional bar code, can preset an error correction threshold value, this error correction threshold value is no more than the error correction capability of this two-dimensional bar code, and whether the error in judgement value during super scope, compares with the above-mentioned error correction threshold value that presets to get final product.
Step 206 according to specifying embedded location to be embedded in the described two-dimensional bar code in advance, obtains patterned two-dimensional bar code with described embedding pattern.
Here the two-dimensional bar code that obtains is the two-dimensional bar code that has pattern, and the pattern that wherein comprises can be the mankind's naked eyes Direct Recognition, thereby understands information wherein, and does not need by identification equipment, and the convenient mankind carry out preliminary processing to it.
Be another embodiment that the pattern to be embedded of black and white is embedded two-dimensional bar code below, black in the present embodiment has identical resolution with two-dimensional bar code, owing to have identical resolution, be with the difference of embodiment 1: do not need that in the present embodiment pattern to be embedded is carried out rasterizing and handle.Two-dimensional bar code behind the embodiment 2 embedding patterns is shown in Fig. 3 b.
With reference to Fig. 3 a, be method embodiment 2 flow charts of the present invention, comprising:
Step 301 is carried out two-dimensional bar code coding to the initial data that presets and is obtained two-dimensional bar code, and obtains position, described two-dimensional bar code control character unit area.
Step 302 according to preassigned pattern embedded location, judges whether the described pattern to be embedded that presets has covered described two-dimensional bar code control character unit area.If described pattern to be embedded cover described two-dimensional bar code control character unit area, execution in step 303, if not, execution in step 304.
Step 303 embeds failure.Can adjust the initial parameter that presets by the user, embed once more.
Step 304 contrasts the color value of the respective modules of described pattern to be embedded and described two-dimensional bar code, judges whether the different module number of color value surpasses the error correction threshold value that presets.If surpass, execution in step 303, if not, execution in step 305.Described error correction threshold value is less than or equal to the error correction capability of two-dimensional bar code.
Step 305 is embedded into described pattern to be embedded in the described two-dimensional bar code according to pre-specified position, obtains patterned two-dimensional bar code.
Be another embodiment that the pattern to be embedded of black and white is embedded two-dimensional bar code below, the black in the present embodiment has different resolution with two-dimensional bar code, because the resolution difference needs that in the present embodiment pattern to be embedded is carried out rasterizing and handles.The pattern that the difference of present embodiment and embodiment 1 is to embed at last in the two-dimensional bar code is exactly original pattern to be embedded, does not carry out rasterizing and handles.Two-dimensional bar code behind the embedding pattern is shown in Fig. 4 b.
With reference to Fig. 4 a, be method embodiment 3 flow charts of the present invention, comprising:
Step 401 is carried out two-dimensional bar code coding to the initial data that presets and is obtained two-dimensional bar code, and obtains position, described two-dimensional bar code control character unit area.
Step 402 is carried out the rasterizing processing to the pattern to be embedded that presets and is obtained the rasterizing pattern.
Step 403 according to preassigned pattern embedded location, judges whether described rasterizing pattern has covered described two-dimensional bar code control character unit area.If described rasterizing pattern cover described two-dimensional bar code control character unit area, execution in step 404, if not, execution in step 405.
Step 404 embeds failure.Can adjust the initial parameter that presets by the user, carry out the embedding of pattern once more.
Step 405 contrasts the color value of the respective modules of described rasterizing pattern and described two-dimensional bar code, judges whether the different module number of color value surpasses the error correction threshold value that presets.If surpass, execution in step 404, if not, execution in step 406.Described error correction threshold value is less than or equal to the error correction capability of two-dimensional bar code.
Step 406 is embedded into the described pattern to be embedded that presets in the described two-dimensional bar code according to pre-specified position, obtains patterned two-dimensional bar code.
The difference of Fig. 4 a and Fig. 2 is that the pattern of embedding is the pattern of handling without rasterizing to be embedded.
Be the example that multicolour pattern is embedded two-dimensional bar code below.
With reference to Fig. 5, be method embodiment 4 flow charts of the present invention, wherein,, need carry out earlier just carrying out color error and judging after binary conversion treatment changes the two dark-and-light colour pattern into, in other idiographic flow and indifference for multicolour pattern.The present embodiment concrete steps comprise:
Step 501 is carried out two-dimensional bar code coding to the initial data that presets and is obtained two-dimensional bar code, and obtains position, described two-dimensional bar code control character unit area.
Step 502 is carried out the rasterizing processing to the pattern to be embedded that presets and is obtained the rasterizing pattern.
Step 503 is carried out binary conversion treatment to the rasterizing pattern.
For the pattern to be embedded of colour, the rasterizing pattern still is colored, need pass through binary conversion treatment, convert the rasterizing pattern to the two dark-and-light colour pattern according to the color assignment situation of two-dimensional bar code, for example, can be converted to the black-and-white two color pattern, be convenient to subsequent step and compare processing.
Step 504 according to preassigned pattern embedded location, judges whether described rasterizing pattern has covered described two-dimensional bar code control character unit area.If described rasterizing pattern cover described two-dimensional bar code control character unit area, execution in step 505, if not, execution in step 506.
Step 505 embeds failure.Can adjust the initial parameter that presets by the user, carry out the embedding of pattern once more.
Step 506 contrasts the color value of the respective modules of described rasterizing pattern and described two-dimensional bar code, judges whether the different module number of color value surpasses the error correction threshold value that presets.If surpass, execution in step 505, if not, execution in step 507.Described error correction threshold value is less than or equal to the error correction capability of two-dimensional bar code.
Step 507 is embedded into described pattern to be embedded in the described two-dimensional bar code according to pre-specified position, obtains patterned two-dimensional bar code.
Present embodiment has realized that doing error correction with the rasterizing pattern judges, and colored pattern to be embedded is embedded in the two-dimensional bar code, and the multicolour pattern in the two-dimensional bar code is expressing information better, is convenient to human identification.Because behind the multicolour pattern rasterizing, pass through the color binaryzation again, its image may be bigger in people's difference visually with multicolour pattern to be embedded before, thus preferred, if meet fault-tolerant requirement, then the original color pattern is embedded in the two-dimensional bar code.
Be another example with colour or black embedding two-dimensional bar code below, under its difference was before the assurance two-dimensional bar code is immovable, the pattern that reality is embedded carried out the color modification.
With reference to Fig. 6 a, be method embodiment 5 flow charts of the present invention, comprising:
Step 601 is carried out two-dimensional bar code coding to the initial data that presets and is obtained two-dimensional bar code.
Step 602 is embedded into the pattern to be embedded that presets in the described two-dimensional bar code.
Step 603, reduce the pattern brightness of dark module correspondence position in described pattern to be embedded and the described two-dimensional bar code, the color of this module is dark after the reduction, improve the pattern brightness of light module correspondence position in described pattern to be embedded and the described two-dimensional bar code, the color of this module is a light color after the raising.
In the decode procedure of two-dimensional bar code, also comprised the process of two-dimensional bar code being carried out binaryzation, because two-dimensional bar code has only modules dark and two kinds of colors of light color, normally utilize the binaryzation algorithm in the image processing algorithm, delimit a boundary they are distinguished, this boundary is a numerical value, if the color value of a module is greater than this boundary, then this module just is defined as dark module, otherwise, then be defined as light module.For example, suppose that black is 0, white is 255.A rational fixed threshold should be exactly a median so: 128, and the black of thinking less than 128, the white of thinking more than or equal to 128.Value is optimum for the rule of multiple decoder selection threshold value like this.When reality is used, different two-dimensional bar code decoders also has different processing rules and reasonably determines threshold value, in addition for the situation of conform light and shade, the threshold value of an overall situation also can be set usually, do not set a fixing threshold value yet, but, calculate threshold value according to the difference of color-values distribution situation in the two-dimensional bar code block.
Present embodiment is exactly a characteristic of utilizing binaryzation algorithm in the two-dimensional bar code decode procedure, multicolour pattern and two-dimensional bar code pattern are carried out mixed processing, particularly be exactly according to the position of dark light module on the two-dimensional bar code pattern pattern parameter of specifying the zone of relevant position on the multicolour pattern to be adjusted, wherein said pattern parameter can be arbitrary parameter or the combination in any in brightness, contrast, the color saturation.Step 603 only shows the situation that the most frequently used brightness to pattern is adjusted, in fact, can be as required to above-mentioned pattern parameter separately or combination adjust, promptly adjust the pattern parameter of dark module correspondence position in described pattern to be embedded and the described two-dimensional bar code, the color of this module is dark after the adjustment, adjust the pattern parameter of light module correspondence position in described pattern to be embedded and the described two-dimensional bar code, the color of this module is a light color after the adjustment.
Present embodiment can not change the distribution of the dark light module of this two-dimensional bar code after the adjustment principle of pattern parameter is to guarantee pattern and two-dimensional bar code stack.When machine is distinguished, the breath of can normal read winning the confidence, but human eye looks, pattern has just been arranged, the contrast of pattern, brightness or color saturation may be through adjustment and former figure different, but do not influence machine recognition, the error correction capability of vacant two-dimensional bar code has realized the embedding of pattern simultaneously.And the pattern that embeds can expand in the whole two-dimensional bar code figure restriction in uncontrolled symbolic unit zone.
Referring to Fig. 6 b, be the two-dimensional bar code after embodiment 5 embeds pattern.For embodiment 5, in fact can in two-dimensional bar code, embed any pattern, can not influence reading of two-dimensional bar code, because the actual time pattern that embeds that changes, certainly can the pattern that will embed be screened in order to satisfy people's vision needs in practice.
Need to prove, an expansion for top all embodiment 1-5 is one section video or image sequence can be put into two-dimensional bar code, because video or image sequence can be made up of one group of static images, with the static images amalgamation, embed in the two-dimensional bar code according to top method, can obtain having the two-dimensional bar code of video.
With reference to Fig. 7, be device embodiment 1 block diagram of the present invention, comprising:
Error correction judging unit 703 is used to judge whether described module number surpasses the error correction capability of two-dimensional bar code, if not, sends and embeds instruction to embedding unit 604;
Two-dimensional bar code can be a kind of in existing stack/row row formula two-dimensional bar code or the matrix two-dimensional barcode, interface unit 701 is used to receive pattern to be embedded and two-dimensional bar code, the pattern that analytic unit 702 is identified for contrasting, contrast patterns can be a pattern to be embedded, also can be that pattern to be embedded is crossed the pattern that obtains after the processing, the resolution of contrast patterns and two-dimensional bar code needs identical when comparing, the color of the respective modules of analytic unit 702 described contrast patterns of contrast and described two-dimensional bar code, the module number of color mistake takes place in statistics, error correction judging unit 703 judges whether described module number surpasses the error correction capability of two-dimensional bar code, if not, send and embed instruction to embedding unit 704, embedding unit 704 instructs according to described embedding, determine to embed pattern, described embedding pattern is embedded in the described two-dimensional bar code according to preassigned embedded location, obtains having the two-dimensional bar code of pattern, send to interface unit 701 and export.
Preferably, also comprise:
The process of described definite contrast patterns is: whether the resolution by the resolution of the described pattern to be embedded of resolution judgment unit judges and described two-dimensional bar code is consistent, if it is consistent, with described pattern to be embedded pattern as a comparison, if not, by the rasterizing processing unit described pattern to be embedded is carried out pattern pattern as a comparison after rasterizing is handled according to the resolution of described two-dimensional bar code.
What need point out is, has increased resolution judging unit 706, can be so that flush mounting shown in Figure 7 can adapt to resolution pattern to be embedded identical or inequality.Certainly, if this flush mounting only comprises then that only at the embedding demand of different resolution rasterizing processing unit 705 gets final product; If perhaps this flush mounting is only at the embedding demand with resolution, then rasterizing processing unit 705 and resolution judging unit 706 can not need.
Preferably, the process of described definite embedding pattern is: according to the parameter that presets, described embedding unit determine to embed pattern, and to be described pattern to be embedded, described pattern to be embedded carry out pattern after rasterizing is handled or described pattern to be embedded according to the resolution of described two-dimensional bar code carries out pattern after rasterizing is handled according to the resolution that sets in advance.
Preferably, also comprise covering judging unit 707, be used for, judge whether described embedding pattern has covered described two-dimensional bar code control character unit area, if embed failure according to preassigned embedded location.
Preferably, also comprise binarization unit 708, be used for when described pattern to be embedded is multicolour pattern, described contrast patterns being carried out binary conversion treatment.
Preferably, also comprise two-dimensional bar code coding unit 709, be used for the input data generation two-dimensional bar code of encoding.
With reference to Fig. 8, be device embodiment 2 block diagrams of the present invention, comprising:
Pattern parameter adjustment unit 803, be used for adjusting the pattern parameter of dark module correspondence position in described pattern to be embedded and the described two-dimensional bar code, the color of this module is dark after the adjustment, adjust in the described pattern to be embedded with described two-dimensional bar code in the pattern parameter of light module correspondence position, the color of this module is a light color after the adjustment; Wherein, described pattern parameter is arbitrary parameter or the combination in any in brightness, contrast, the color saturation.
For example, reduce in the described pattern to be embedded with described two-dimensional bar code in the pattern brightness of dark module correspondence position, the color of this module is dark after the reduction, increase in the described pattern to be embedded with described two-dimensional bar code in the pattern brightness of light module correspondence position, the color of this module is a light color after the increase.
Pattern parameter adjustment unit 803 is according to the color threshold values of two-dimensional bar code, the adjustment of pattern parameter is carried out to the zone of specifying relevant position on the multicolour pattern in position according to dark light module on the two-dimensional bar code pattern, after making the stack of pattern and two-dimensional bar code, can not change the distribution of the dark light module of this two-dimensional bar code, make machine when recognition, the breath of can normal read winning the confidence.
Preferably, also comprise two-dimensional bar code coding unit 804, be used for the input data generation two-dimensional bar code of encoding.
More than to a kind of method of patterning and device of in two-dimensional bar code, embedding provided by the present invention, be described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (16)
1, a kind of method of patterning that embeds in two-dimensional bar code is characterized in that, comprises the following steps:
Preset two-dimensional bar code, pattern to be embedded and embedded location;
Determine contrast patterns, described contrast patterns is identical with the resolution of described two-dimensional bar code;
According to described embedded location, the color of corresponding module in more described contrast patterns and the described two-dimensional bar code, the module number of color mistake takes place in statistics;
If described module number does not surpass the error correction threshold value that presets, then;
Determine to embed pattern, and described embedding pattern is embedded in the described two-dimensional bar code according to preassigned embedded location.
2, method according to claim 1 is characterized in that, when the resolution of the resolution of described pattern to be embedded and described two-dimensional bar code was consistent, described contrast patterns was described pattern to be embedded.
3, method according to claim 1, it is characterized in that, when the resolution of the resolution of described pattern to be embedded and described two-dimensional bar code was inconsistent, described contrast patterns was for will described pattern to be embedded carrying out pattern after the rasterizing processing according to the resolution of described two-dimensional bar code.
4, method according to claim 1 is characterized in that, described embedding pattern is:
Described pattern to be embedded;
Perhaps, described pattern to be embedded handle is adjusted pattern after the resolution by rasterizing.
5, method according to claim 1 is characterized in that, also comprise,
According to preassigned embedded location, judge whether described embedding pattern covers described two-dimensional bar code control character unit area, if not, then continue to embed flow process.
6, method according to claim 1 and 2 is characterized in that, also comprise,
If described pattern to be embedded is non-bianry image, each module color of described contrast patterns is carried out binary conversion treatment.
7, a kind of device that embeds pattern in two-dimensional bar code is characterized in that, comprising:
Interface unit is used to receive two-dimensional bar code, pattern to be embedded and embedded location, and output has embedded the two-dimensional bar code of pattern;
Analytic unit is used for determining contrast patterns, and the color that contrasts the respective modules of described contrast patterns and described two-dimensional bar code, and the module number of color mistake takes place statistics;
The error correction judging unit is used to judge whether the module number of described generation color mistake surpasses the error correction threshold value that presets, and if not, sends and embeds instruction to embedding the unit; Described error correction threshold value is less than or equal to the error correction capability of two-dimensional bar code;
Embed the unit, be used for receiving embedding and instruct, and, determine to embed pattern, described embedding pattern is embedded in the described two-dimensional bar code according to preassigned embedded location according to described embedding instruction.
8, device according to claim 7 is characterized in that, also comprise,
The rasterizing processing unit is used for that described pattern to be embedded is carried out rasterizing according to the resolution of resolution that sets in advance or described two-dimensional bar code and handles.
9, according to claim 7 or 8 described devices, it is characterized in that, also comprise,
The resolution judging unit is used to judge whether the resolution of the resolution of described pattern to be embedded and described two-dimensional bar code is consistent;
The process of described definite contrast patterns is: whether the resolution by the resolution of the described pattern to be embedded of resolution judgment unit judges and described two-dimensional bar code is consistent, if it is consistent, with described pattern to be embedded pattern as a comparison, if not, by the rasterizing processing unit described pattern to be embedded is carried out pattern pattern as a comparison after rasterizing is handled according to the resolution of described two-dimensional bar code.
10, device according to claim 7 is characterized in that, described embedding pattern is:
Described pattern to be embedded;
Perhaps, described pattern to be embedded handle is adjusted pattern after the resolution by rasterizing.
11, device according to claim 7 is characterized in that, also comprise,
Cover judging unit, be used for, judge whether described embedding pattern covers described two-dimensional bar code control character unit area, if not, then continue to embed flow process according to preassigned embedded location.
12, device according to claim 7 is characterized in that, also comprise,
Binarization unit is used for when described pattern to be embedded is multicolour pattern, and each module color of described contrast patterns is carried out binary conversion treatment.
13, device according to claim 7 is characterized in that, also comprise,
The two-dimensional bar code coding unit is used for the input data generation two-dimensional bar code of encoding.
14, a kind of method of patterning that embeds in two-dimensional bar code is characterized in that, comprises the following steps:
Preset pattern to be embedded, two-dimensional bar code and embedded location;
According to embedded location described pattern to be embedded is embedded in the described two-dimensional bar code;
Adjust in the described pattern to be embedded with described two-dimensional bar code in the pattern parameter of dark module correspondence position, the color of this module is dark after the adjustment; Adjust in the described pattern to be embedded with described two-dimensional bar code in the pattern parameter of light module correspondence position, the color of this module is a light color after the adjustment; Wherein, described pattern parameter is arbitrary parameter or the combination in any in brightness, contrast, the color saturation.
15, a kind of device that embeds pattern in two-dimensional bar code is characterized in that, comprising:
Interface unit is used to receive pattern to be embedded, two-dimensional bar code and embedded location, and output has the two-dimensional bar code of pattern;
Embed the unit, be used for described pattern to be embedded is embedded into described two-dimensional bar code;
The pattern parameter adjustment unit is used for adjusting the pattern parameter of dark module correspondence position in described pattern to be embedded and the described two-dimensional bar code, and the color of this module is dark after the adjustment; Adjust in the described pattern to be embedded with described two-dimensional bar code in the pattern parameter of light module correspondence position, the color of this module is a light color after the adjustment; Wherein, described pattern parameter is arbitrary parameter or the combination in any in brightness, contrast, the color saturation.
16, device according to claim 15 is characterized in that, also comprise,
The two-dimensional bar code coding unit is used for the input data generation two-dimensional bar code of encoding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610138179 CN1953362A (en) | 2006-11-16 | 2006-11-16 | A method and installation to embed pattern in two-dimensional bar code |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610138179 CN1953362A (en) | 2006-11-16 | 2006-11-16 | A method and installation to embed pattern in two-dimensional bar code |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1953362A true CN1953362A (en) | 2007-04-25 |
Family
ID=38059513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610138179 Pending CN1953362A (en) | 2006-11-16 | 2006-11-16 | A method and installation to embed pattern in two-dimensional bar code |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1953362A (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101504716B (en) * | 2009-03-13 | 2010-10-27 | 重庆大学 | QR two-dimension bar code recognition method and system based on field programmable gate array |
| CN102147873A (en) * | 2011-03-21 | 2011-08-10 | 上海彩码信息科技有限公司 | Method and system for generating color code as well as method and system for analyzing color code |
| CN102243712A (en) * | 2010-05-14 | 2011-11-16 | 上海彩码信息科技有限公司 | Generation method and system thereof for colored bar code, and analytic method and system thereof for colored bar code |
| CN102708389A (en) * | 2012-06-05 | 2012-10-03 | 王赤坤 | Dimensional code font creating method |
| CN102810163A (en) * | 2011-06-02 | 2012-12-05 | 航天信息股份有限公司 | Picture channel and information transfer method thereof |
| CN103342053A (en) * | 2013-05-31 | 2013-10-09 | 深圳劲嘉彩印集团股份有限公司 | Image-based two-dimension code and image-based two-dimension code generating system and method |
| CN103377390A (en) * | 2012-04-26 | 2013-10-30 | 阿里巴巴集团控股有限公司 | Method and device for generating and recognizing two-dimension code |
| CN103489024A (en) * | 2012-06-08 | 2014-01-01 | 北京千橡网景科技发展有限公司 | Method and equipment for generating concealed bar code |
| CN103886352A (en) * | 2014-02-20 | 2014-06-25 | 百度在线网络技术（北京）有限公司 | Processing method and device for two-dimensional code |
| CN104281863A (en) * | 2013-07-04 | 2015-01-14 | 百度在线网络技术（北京）有限公司 | Method and device for determining type of two-dimension code and computer device |
| CN104346640A (en) * | 2013-08-08 | 2015-02-11 | 李润容 | Two dimensional code and method of creating same |
| TWI478067B (en) * | 2010-11-26 | 2015-03-21 | Funcode Technology | Machine readable marker service system |
| CN104579888A (en) * | 2013-10-09 | 2015-04-29 | 爱玛丽欧有限公司 | Method for establishing connection of IP networking device |
| CN104657768A (en) * | 2015-03-20 | 2015-05-27 | 华中科技大学 | Colorful three-dimensional code structure and colorful three-dimensional code reading method |
| CN104899629A (en) * | 2015-06-12 | 2015-09-09 | 吴伟和 | Two-dimensional code image generation method based on radial basis function |
| TWI502516B (en) * | 2014-01-15 | 2015-10-01 | Univ Nat Taiwan | Beautifying method of quick response code and apparatus thereof |
| CN106295755A (en) * | 2015-05-27 | 2017-01-04 | 东莞文胜鼎电子科技有限公司 | Two-dimensional code generation method, detection method, detection device and antifalsification label |
| CN110633773A (en) * | 2018-06-22 | 2019-12-31 | 北京京东尚科信息技术有限公司 | Two-dimensional code generation method and device for terminal equipment |
-
2006
- 2006-11-16 CN CN 200610138179 patent/CN1953362A/en active Pending
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101504716B (en) * | 2009-03-13 | 2010-10-27 | 重庆大学 | QR two-dimension bar code recognition method and system based on field programmable gate array |
| CN102243712B (en) * | 2010-05-14 | 2014-01-29 | 上海彩码信息科技有限公司 | Generation method and system thereof for colored bar code, and analytic method and system thereof for colored bar code |
| CN102243712A (en) * | 2010-05-14 | 2011-11-16 | 上海彩码信息科技有限公司 | Generation method and system thereof for colored bar code, and analytic method and system thereof for colored bar code |
| TWI478067B (en) * | 2010-11-26 | 2015-03-21 | Funcode Technology | Machine readable marker service system |
| CN102147873A (en) * | 2011-03-21 | 2011-08-10 | 上海彩码信息科技有限公司 | Method and system for generating color code as well as method and system for analyzing color code |
| CN102147873B (en) * | 2011-03-21 | 2013-01-23 | 上海彩码信息科技有限公司 | Method and system for generating color code as well as method and system for analyzing color code |
| CN102810163B (en) * | 2011-06-02 | 2015-03-25 | 航天信息股份有限公司 | Picture channel and information transfer method thereof |
| CN102810163A (en) * | 2011-06-02 | 2012-12-05 | 航天信息股份有限公司 | Picture channel and information transfer method thereof |
| CN103377390A (en) * | 2012-04-26 | 2013-10-30 | 阿里巴巴集团控股有限公司 | Method and device for generating and recognizing two-dimension code |
| CN102708389A (en) * | 2012-06-05 | 2012-10-03 | 王赤坤 | Dimensional code font creating method |
| CN103489024A (en) * | 2012-06-08 | 2014-01-01 | 北京千橡网景科技发展有限公司 | Method and equipment for generating concealed bar code |
| CN103342053A (en) * | 2013-05-31 | 2013-10-09 | 深圳劲嘉彩印集团股份有限公司 | Image-based two-dimension code and image-based two-dimension code generating system and method |
| CN103342053B (en) * | 2013-05-31 | 2015-12-23 | 深圳劲嘉彩印集团股份有限公司 | A kind of Quick Response Code based on image, Quick Response Code generation system and generation method |
| CN104281863B (en) * | 2013-07-04 | 2018-05-01 | 百度在线网络技术（北京）有限公司 | A kind of method, apparatus and computer equipment for being used to determine Quick Response Code pattern |
| CN104281863A (en) * | 2013-07-04 | 2015-01-14 | 百度在线网络技术（北京）有限公司 | Method and device for determining type of two-dimension code and computer device |
| CN104346640A (en) * | 2013-08-08 | 2015-02-11 | 李润容 | Two dimensional code and method of creating same |
| CN104579888A (en) * | 2013-10-09 | 2015-04-29 | 爱玛丽欧有限公司 | Method for establishing connection of IP networking device |
| TWI502516B (en) * | 2014-01-15 | 2015-10-01 | Univ Nat Taiwan | Beautifying method of quick response code and apparatus thereof |
| CN103886352A (en) * | 2014-02-20 | 2014-06-25 | 百度在线网络技术（北京）有限公司 | Processing method and device for two-dimensional code |
| CN104657768A (en) * | 2015-03-20 | 2015-05-27 | 华中科技大学 | Colorful three-dimensional code structure and colorful three-dimensional code reading method |
| CN104657768B (en) * | 2015-03-20 | 2017-11-03 | 华中科技大学 | A kind of color three dimension code generator and color three dimension code reading method |
| CN106295755A (en) * | 2015-05-27 | 2017-01-04 | 东莞文胜鼎电子科技有限公司 | Two-dimensional code generation method, detection method, detection device and antifalsification label |
| CN104899629A (en) * | 2015-06-12 | 2015-09-09 | 吴伟和 | Two-dimensional code image generation method based on radial basis function |
| CN104899629B (en) * | 2015-06-12 | 2017-09-19 | 吴伟和 | A kind of image in 2 D code generation method based on RBF |
| CN110633773A (en) * | 2018-06-22 | 2019-12-31 | 北京京东尚科信息技术有限公司 | Two-dimensional code generation method and device for terminal equipment |
| CN110633773B (en) * | 2018-06-22 | 2022-04-12 | 北京京东尚科信息技术有限公司 | Two-dimensional code generation method and device for terminal equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1953362A (en) | A method and installation to embed pattern in two-dimensional bar code | |
| US8783571B2 (en) | Device and its use for outputting of 2D codes with embedded images | |
| EP3457327A1 (en) | Method and apparatus for generating two-dimensional code picture having dynamic effect | |
| JP2935640B2 (en) | Apparatus and method for reading binary code optically readable by machine | |
| EP1612724B1 (en) | System and method for encoding high density geometric symbol set | |
| US10679175B2 (en) | Two-dimensional code, system for creation of two-dimensional code, and analysis program | |
| US6819776B2 (en) | Encoding and decoding a message within an image | |
| US20120024956A1 (en) | Qr code having hidden codes and methods of forming and identifying the hidden codes | |
| US20160350568A1 (en) | Two-dimensional (2-d) code generating method, detecting method, detecting apparatus, and anti-counterfeit label | |
| US20110053639A1 (en) | Methods and devices for authenticating a product and a two-dimensional code and novel application of a two-dimensional code | |
| EP3053104B1 (en) | Data transmission using optical codes | |
| US20130343645A1 (en) | Color matrix code | |
| CN100433038C (en) | Method for reading a symbol having encoded information | |
| GB2446424A (en) | Two dimensional bar code with locating symbols | |
| CN108073966A (en) | A kind of conversion method of Quick Response Code and hole horizontal and vertical parity check code | |
| US7388984B2 (en) | Method of recognizing a code | |
| CN104992207B (en) | A kind of mobile phone two-dimensional bar code decoding method | |
| KR102375325B1 (en) | Method for detection and recognition of distant high-density visual markers | |
| CN103955730A (en) | Manufacturing method of anti-counterfeiting photo-etched two-dimensional code labels | |
| CN102081747A (en) | Two-dimensional bar code | |
| CN108073963B (en) | Fusion two-dimensional code generation method and device | |
| US7079667B2 (en) | Method and apparatus for implementing occlusion glyph code tilings | |
| CN109543803B (en) | Coding system and decoding system capable of editing primary-secondary color two-dimensional codes | |
| CN107247984B (en) | Coding method of visual two-dimensional code | |
| JP2009175845A (en) | Image processor, pen device, and program |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20070425 |