CN104091189A - Coding and decoding methods for micro-window color two-dimension code - Google Patents
Coding and decoding methods for micro-window color two-dimension code Download PDFInfo
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Abstract
The invention relates to coding and decoding methods for a micro-window color two-dimension code. The coding method includes the following methods: randomly generating identity identification code data for to-be-identified information; endowing the identity identification code data with processing data; generating valid data via the identify identification code data and the processing data; carrying out a CRC operation on the valid data so as to obtain verification data; generating to-be-coded data via the valid data and the verification data; carrying out binary processing on the to-be-coded data; searching for a color data unit corresponding to each kind of data unit and processing the to-be-coded data which is divided into data units into to-be-coded data formed by color data units; and according to color data corresponding to the color data units, generating to-be-coded data formed by a four-color two-dimension code. The coding and decoding methods for the micro-window color two-dimension code improve the identification speed and accuracy and do not cause unreadable phenomena.
Description
Technical field
The present invention relates to planar bar code technology field, be specifically related to coding, the coding/decoding method of micro-window color 2 D code.
Background technology
Quick Response Code is as graphic code technology of new generation, because of its reading manner, abundant character support quickly and easily and popularized rapidly far above the capacity of bar code.Quick Response Code has been widely used in the every field of productive life at present, such as usining Quick Response Code as merchandise news, card information, train ticket, film ticket and various certificates etc.The widespread use of Quick Response Code has facilitated the issue of various information and has read.
One dimension code and Quick Response Code that current common employing has solid color carry out load information.The size of one dimension code is relatively large, only can load letter and number, data capacity is generally 30 characters, expressing information in the horizontal direction, its height possessing is for the ease of the aligning of bar decoding apparatus and reads, that is to say, one dimension code cannot be aspect vertical expressing information, the space availability ratio of visible one dimension code is lower.
And for the Quick Response Code of common monochrome, its relativity of information increases to some extent than one dimension code, maximum data content can reach 1850 characters, and the information content can comprise letter, numeral, Chinese character, character and katakana etc., but with regard to current technology, total data is stored in and in Quick Response Code, has there is no too many practical significance, memory space or conditional, and the requirement of the more multipair accuracy of identification of data of storage is higher, and error rate is also higher.
Summary of the invention
The coding, the coding/decoding method that the object of this invention is to provide a kind of micro-window color 2 D code, improved recognition speed and accuracy, and made the Quick Response Code after color can be designed to various patterns, and not affected by environment, can not cause and not can read phenomenon.Can store simultaneously and express complex information in horizontal and vertical two dimensions, and bring the multiple application such as reward voucher, product are traced to the source, access websites, data analysis by color code identification.
For achieving the above object, the invention provides a kind of coding method of micro-window color 2 D code, said method comprising the steps of:
For information to be identified is random, generate an identification code data, the data length of described identification code data is the first length;
For described identify label code data invests deal with data, the data length of described deal with data is the second length;
By described identification code data and described deal with data, generate valid data;
Described valid data are carried out to CRC computing and obtain checking data, the data length of described checking data is the 3rd length;
By described valid data and described checking data, generate data to be encoded, the data length of described data to be encoded is the 4th length;
For described data to be encoded carry out scale-of-two processing, the data of every two length are a data cell, have four kinds of data cells, and the number of described data cell is the 4th length half;
Search every kind of color data unit that data cell is corresponding, the described data to be encoded that are divided into data cell are treated to the data to be encoded that are comprised of color data unit;
The color data corresponding according to described color data unit generates the data to be encoded that are comprised of four kinds of color Quick Response Codes, the corresponding color data of each color.
Further, described the first length is 64, and described the second length is 24, and described the 3rd length is 16, and described the 4th length is 104.
Further, described 64 comprise 16bit type or reserved, 32bit time data, 16bit sequence number.
Further, an also corresponding color data unit of each color.
For achieving the above object, the present invention also provides a kind of coding/decoding method of micro-window color 2 D code, said method comprising the steps of:
The color data unit corresponding according to color data generates the data to be decoded that are comprised of four kinds of color Quick Response Codes, the corresponding color data of each color;
Searching every kind of data cell that color data unit is corresponding, is the data to be decoded that are comprised of data cell by the described data processing to be decoded that is divided into color data unit, and the data of every two length are a data cell, have four kinds of data cells;
By described data to be decoded, obtain valid data and the first checking data, the data length of described data to be decoded is the 5th length, and the number of described data cell is half of described the 5th length, and the data length of described the first checking data is the 6th length;
By described valid data, obtain identification code data and deal with data, the data length of described identification code data is the 7th length, and the data length of described deal with data is the 8th length;
Described the first checking data is carried out to verification, when check results is, while judging that described valid data are correct, to obtain described identify label code data, then obtain identifying information according to described identify label code data by described valid data.
Further, an also corresponding color data unit of each color.
Further, described the 5th length is 104, and described the 6th length is 16, and described the 7th length is 64, and described the 8th length is 24.
Further, described 64 comprise 16bit type or reserved, 32bit time data, 16bit sequence number.
Further, described method also comprises: when check results is while judging described valid data mistake, again to the described decoding data to be decoded being comprised of four kinds of color Quick Response Codes.
Further, describedly described the first checking data carried out to verification specifically comprise:
Described valid data generate the second checking data by CRC computing;
Described the second checking data and described the first checking data are compared, when described the second checking data when consistent, judges that described valid data are correct with described the first checking data; When described the second checking data and described the first checking data are when inconsistent, judge described valid data mistake.
The present invention has improved recognition speed and accuracy, has made the Quick Response Code after color can be designed to various patterns, and not affected by environment, can not cause and not can read phenomenon.
Accompanying drawing explanation
The process flow diagram of the coding method of a kind of micro-window color 2 D code that Fig. 1 provides for the embodiment of the present invention;
The sample figure of the coding method of a kind of micro-window color 2 D code of application that Fig. 2 provides for the embodiment of the present invention;
Another sample figure of the coding method of a kind of micro-window color 2 D code of application that Fig. 3 provides for the embodiment of the present invention;
The process flow diagram of the coding/decoding method of a kind of micro-window color 2 D code that Fig. 4 provides for the embodiment of the present invention.
Wherein, the Reference numeral of Fig. 2 is as follows:
21 is black circular pattern; 22 is red circular pattern; 23 is blue circular pattern; 24 is yellow circular pattern.
The Reference numeral of Fig. 3 is as follows:
31 is black triangle pattern; 32 is red triangle pattern; 33 is blue triangle pattern; 34 is yellow triangle pattern.
Embodiment
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
The process flow diagram of the coding method of micro-window color 2 D code that Fig. 1 provides for the embodiment of the present invention, the Fig. 1 of take below describes the coding method of a kind of micro-window color 2 D code that the embodiment of the present invention provides in detail as example, and the method comprises the following steps:
Step 101, generates an identification code data for information to be identified is random, and the data length of identification code data is the first length.
Concrete, information to be identified can be numeral, letter, word, picture, audio frequency, video, network address, E-mail address etc.Through this step, process, information to be identified and Identity Code data are associated.The data length of identify label code data is the first length, and the first length is 64, and wherein 64 Identity Code data comprise 16bit type or reserved, 32bit time data, 16bit sequence number.That is to say when treating identifying information and encode, first be unique identification of Information generation to be identified, it is identify label code data, first 16 of identify label code data is fixing reserved place, middle 32 is the current time to be accurate to second, and rear 16 is individual for representing which is generated to current this second.
Step 102, for identify label code data invests deal with data, the data length of deal with data is the second length.
Concrete, after the identify label code data of 64, add the deal with data of 24, the second length is 24.Wherein, deal with data is random data, considers and carries out scrambling to generating color code, so fill this deal with data of 24 rather than all fill 0 with random data.
Step 103, generates valid data by identification code data and deal with data.
Concrete, the identify label code data of 64 and the deal with data of 24 generate the valid data of 88.
Step 104, carries out CRC computing to valid data and obtains checking data, and the data length of checking data is the 3rd length.
Concrete, CRC computing is canonical algorithm, and the computing of the valid data of 88 being carried out to canonical algorithm obtains the checking data of 16, and the 3rd length is 16.
Step 105, generates data to be encoded by valid data and checking data, and the data length of data to be encoded is the 4th length.
Through previous step, the valid data of 88 and 16 s' checking data generates the data to be encoded of 104, and the 4th length is 104.
Step 106, for data to be encoded carry out scale-of-two processing, the data of every two length are a data cell, have four kinds of data cells, and the number of described data cell is the 4th length half.
Concrete, the data to be encoded of 104 are carried out to scale-of-two processing, every 2bit is a data cell, four kinds of data cells, are respectively 00,01,10,11 altogether.Obtain 52 data cells.
Step 107, searches every kind of color data unit that data cell is corresponding, and the described data to be encoded that are divided into data cell are treated to the data to be encoded that are comprised of color data unit.
Step 108, the color data corresponding according to color data unit generates the data to be encoded that are comprised of four kinds of color Quick Response Codes, the corresponding color data of each color.
Concrete, the information memory capacity of each color data unit is 2bit, because the color data that each color data unit is corresponding is likely encoded as any in four kinds of colors,, red, blue, yellow black by these four kinds of colors of binary coding representation is just 00,01,10,11 respectively, the final data to be encoded that are comprised of four kinds of color Quick Response Codes that generate.
Consider in current design and draw 52 data cells for storing plane space and the minimum necessary data volume of data, the distance of the selection of these 52 data cell positions based between consecutive point is maximum principle, so the data to be encoded of final storage are 2bit*52=104bit, except necessary 64bit identification code data and 16bit check code data, also have 24bit reserved place, reserved place is deal with data mentioned above.
In addition, why select current these four kinds of colors, also be based on these four kinds of colors in color space at a distance of principle farthest, the data cell of storage data is also under the prerequisite that guarantees data cell quantity, to guarantee that the consecutive point distance of positions is from farthest, and then reduces the requirement to accuracy of identification.
In actual applications, for example user's wish generates color code by a certain network address, on the Web page providing at server end, select to create micro-window color 2 D code, then the Web page can be pointed out user's input information, it is network address that user can select information type, then input network address, click and determine, this network address is just associated with micro-window color 2 D code, in internal system, be actually the Identity Code ID that has generated a unique 64bit, this ID just and the information of customization be associated, and be kept in the database of server end, finally according to this ID, the coded data of 104bit is encoded and generated micro-window color 2 D code.
The sample figure of the coding method of a kind of micro-window color 2 D code of application that Fig. 2 provides for the embodiment of the present invention, the Fig. 2 of take below describes the sample that the coding method of a kind of micro-window color 2 D code of application that the embodiment of the present invention provides generates in detail as example.
First, setup parameter:
The every limit of sample outmost pattern number N, N=7 herein, pattern is circular;
The circumscribed triangle length of side of circular pattern is 2R, and the value of R can arbitrarily be specified, and is equivalent to width=r of the edge MARGIN of unit;
Secondly, it is black that color forms background, and pattern has 4 kinds of alternative looks, i.e. black, red, blue, yellow, the advantage of these four kinds of colors is that the maximal value of tri-components of RGB and the difference of minimum value are maximum, is convenient to identification, utilize the mathematical tools such as variance, can comparatively accurately must distinguish 4 kinds of colors, referring to table 1.
Table 1
| Color | Black 1 | Red 2 | Blue 3 | Yellow 4 |
| Rgb value | 000000 | FF00FF | 00FFFF | FFFF00 |
Finally, according to coded sequence, to being encoded by 104bit data to be encoded, generate micro-window color 2 D code as shown in Figure 3, coded sequence is as follows:
Last 8 patterns represent check code, and each check code accounts for 2 bytes, and all the other 11 bytes all can be used for Identity Code;
The square length of side
The radius of circular pattern is
When R=104, have 52 patterns, be divided into 8 groups, first 4 groups every group 7, latter four groups every group 6, as shown in Figure 3, seven of outer rings circle, 6 circles of inner ring.
Another sample figure of the coding method of a kind of micro-window color 2 D code of application that Fig. 3 provides for the embodiment of the present invention, the Fig. 3 of take below describes another sample that the coding method of a kind of micro-window color 2 D code of application that the embodiment of the present invention provides generates in detail as example.
First, setup parameter, the every limit of sample outmost pattern number N, N=7 herein, pattern is triangle, and the coded sequence of sample is that last 8 patterns represent check code, and each check code accounts for 2 bytes, and all the other 11 bytes all can be used for Identity Code; Secondly, it is black that color forms background, and pattern has 4 kinds of alternative looks, and black, red, blue, yellow, identical with the sample shown in Fig. 2; Finally, according to coded sequence, to being encoded by 104bit data to be encoded, generate micro-window color 2 D code as shown in Figure 3, totally 52 triangle patterns, are divided into 8 groups, and first 4 groups every group 7 are arranged in outer ring, and rear 4 groups every group 6 triangle patterns are arranged in inner ring.
Due to reality sampling, only use and take the color mean value in the small circular region that sampling spot is the center of circle, so guaranteeing under the prerequisite of color-code around sampling spot, the color matching in other places is flexibly, highly customizable, in the sample shown in Fig. 2 and Fig. 3 only example circle and triangle pattern, in actual applications, can also design use lathe work pattern pattern more attractive in appearance.
The process flow diagram of the coding/decoding method of micro-window color 2 D code that Fig. 4 provides for the embodiment of the present invention, the Fig. 4 of take below describes the coding/decoding method of a kind of micro-window color 2 D code that the embodiment of the present invention provides in detail as example, and the method comprises the following steps:
Step 401, the color data unit corresponding according to color data generates the data to be decoded that are comprised of four kinds of color Quick Response Codes, the corresponding color data of each color.
Concrete, according to table 1, generate the data to be decoded that formed by four kinds of color Quick Response Codes.
Step 402, searches every kind of data cell that color data unit is corresponding, by the data processing to be decoded that is divided into color data unit, is the data to be decoded that are comprised of data cell, and the data of every two length are a data cell, have four kinds of data cells.
Concrete, the information memory capacity of each color data unit is 2bit, because the color data that each color data unit is corresponding is likely encoded as any in four kinds of colors,, red, blue, yellow black by these four kinds of colors of binary coding representation is just 00,01,10,11 respectively, i.e. four kinds of data cells, searching every kind of data cell that color data unit is corresponding, is the data to be decoded that are comprised of data cell by the data processing to be decoded that is divided into color data unit.
Step 403, obtains valid data and the first checking data by data to be decoded, and the data length of data to be decoded is the 5th length, and the number of data cell is half of the 5th length, and the data length of the first checking data is the 6th length.
Concrete, by 104 data to be decoded, obtaining 88 valid data and 16 the first checking datas, the 5th length is 104, the 6th length is 16.And in previous step, the number of data cell is half of the 5th length, 52.
Step 404, obtains identification code data and deal with data by valid data, and the data length of identification code data is the 7th length, and the data length of deal with data is the 8th length.
Concrete, by 88 valid data, obtain 64 identification code datas and 24 deal with data, the 7th length is 64, the 8th length is 24.Wherein, 64 identity code data comprise 16bit type or reserved, 32bit time data, 16bit sequence number; Deal with data is random data, is because of scrambling, need to fill this deal with data of 24 with random data in cataloged procedure.
Step 405, carries out verification to the first checking data, when check results is, while judging that valid data are correct, to obtain identify label code data, then obtain identifying information according to identify label code data by valid data.
Concrete, the first check code is carried out to verification and specifically comprises the following steps:
Valid data generate the second checking data by CRC computing;
The second checking data and the first checking data are compared, when the second checking data when consistent, judges that valid data are correct with the first checking data; When the second checking data and the first checking data are when inconsistent, judge effective error in data.
Further, the method also comprises: when check results is while judging effective error in data, again to the decoding data to be decoded being comprised of four kinds of color Quick Response Codes.
In identifying, we have determined the position of 52 data cells at color code fringe region as described above, in identifying, in fact just in these 52 positions, go to sample and differentiate the color value of each point, 52 positions refer to centered by 52 location points one among a small circle in color average, in specific implementation, calculate and take sampled point as the color mean value of center of circle radius in the border circular areas of 9 pixels, with this, be worth the color that represents this position, then judge the color coding of this value, specifically, see which color region is this value drop in, for example suppose between chromatic zones to be 0-255, this value thinks that between 0-63 this value is color 1, coding 00, this value thinks that between 64-127 this value is color 2, coding 01, this value thinks that between 128-191 this value is color 3, coding 10, this value thinks that between 192-255 this value is color 4, coding 11.Further reduce thus the requirement to accuracy of identification, improve recognition speed and accuracy.
The present invention has not only improved recognition speed and accuracy, and has made the Quick Response Code after color can be designed to various patterns, and not affected by environment, can not cause and not can read phenomenon.Can store simultaneously and express complex information in horizontal and vertical two dimensions, and bring the multiple application such as reward voucher, product are traced to the source, access websites, data analysis by color code identification.
Above-described embodiment; object of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only the specific embodiment of the present invention; the protection domain being not intended to limit the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a coding method for micro-window color 2 D code, is characterized in that, said method comprising the steps of:
For information to be identified is random, generate an identification code data, the data length of described identification code data is the first length;
For described identify label code data invests deal with data, the data length of described deal with data is the second length;
By described identification code data and described deal with data, generate valid data;
Described valid data are carried out to CRC computing and obtain checking data, the data length of described checking data is the 3rd length;
By described valid data and described checking data, generate data to be encoded, the data length of described data to be encoded is the 4th length;
For described data to be encoded carry out scale-of-two processing, the data of every two length are a data cell, have four kinds of data cells, and the number of described data cell is the 4th length half;
Search every kind of color data unit that data cell is corresponding, the described data to be encoded that are divided into data cell are treated to the data to be encoded that are comprised of color data unit;
The color data corresponding according to described color data unit generates the data to be encoded that are comprised of four kinds of color Quick Response Codes, the corresponding color data of each color.
2. the coding method of micro-window color 2 D code according to claim 1, is characterized in that, described the first length is 64, and described the second length is 24, and described the 3rd length is 16, and described the 4th length is 104.
3. the coding method of micro-window color 2 D code according to claim 2, is characterized in that, described 64 comprise 16bit type or reserved, 32bit time data, 16bit sequence number.
4. the coding method of micro-window color 2 D code according to claim 1, is characterized in that, each color is a corresponding color data unit also.
5. a coding/decoding method for micro-window color 2 D code, is characterized in that, said method comprising the steps of:
The color data unit corresponding according to color data generates the data to be decoded that are comprised of four kinds of color Quick Response Codes, the corresponding color data of each color;
Searching every kind of data cell that color data unit is corresponding, is the data to be decoded that are comprised of data cell by the described data processing to be decoded that is divided into color data unit, and the data of every two length are a data cell, have four kinds of data cells;
By described data to be decoded, obtain valid data and the first checking data, the data length of described data to be decoded is the 5th length, and the number of described data cell is half of described the 5th length, and the data length of described the first checking data is the 6th length;
By described valid data, obtain identification code data and deal with data, the data length of described identification code data is the 7th length, and the data length of described deal with data is the 8th length;
Described the first checking data is carried out to verification, when check results is, while judging that described valid data are correct, to obtain described identify label code data, then obtain identifying information according to described identify label code data by described valid data.
6. the coding/decoding method of micro-window color 2 D code according to claim 5, is characterized in that, each color is a corresponding color data unit also.
7. the coding/decoding method of micro-window color 2 D code according to claim 5, is characterized in that, described the 5th length is 104, and described the 6th length is 16, and described the 7th length is 64, and described the 8th length is 24.
8. the coding/decoding method of micro-window color 2 D code according to claim 7, is characterized in that, described 64 comprise 16bit type or reserved, 32bit time data, 16bit sequence number.
9. the coding/decoding method of micro-window color 2 D code according to claim 5, it is characterized in that, described method also comprises: when check results is while judging described valid data mistake, again to the described decoding data to be decoded being comprised of four kinds of color Quick Response Codes.
10. the coding/decoding method of micro-window color 2 D code according to claim 5, is characterized in that, describedly described the first checking data is carried out to verification specifically comprises:
Described valid data generate the second checking data by CRC computing;
Described the second checking data and described the first checking data are compared, when described the second checking data when consistent, judges that described valid data are correct with described the first checking data; When described the second checking data and described the first checking data are when inconsistent, judge described valid data mistake.
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