CN104992207A - Mobile phone two-dimensional bar code coding and decoding method - Google Patents
Mobile phone two-dimensional bar code coding and decoding method Download PDFInfo
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- CN104992207A CN104992207A CN201510333377.3A CN201510333377A CN104992207A CN 104992207 A CN104992207 A CN 104992207A CN 201510333377 A CN201510333377 A CN 201510333377A CN 104992207 A CN104992207 A CN 104992207A
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Abstract
The invention discloses a mobile phone two-dimensional bar code coding and decoding method. The method comprises coding and decoding; the coding comprises data analyses, data coding, error correction coding, final information construction, arrangement codes, mask layer, a generated format and version information; and the decoding comprises determining an image threshold, determining a position detection figure, analyzing a center coordinate of the position detection image, calculating a rotating angle of a two-dimensional code, correcting the rotating angle of the two-dimensional code, calculating a module width according to a difference between any two center coordinates, determining a version number, finding a positioning figure and a correction image and establishing a sampling network, sampling, decoding format information, performing XOR processing on a coding zone of a sign by utilizing a mask layer picture, re-arranging a code word sequence based on modules according to an inverted sequence of the arrangement codes while the coding, correcting data of the sign coding region and replacing an error and a reading rejection error, recovering a binary system bit stream of original information, and decoding according to different modes selected and used in the coding. The method improves the success rate of the mobile phone two-dimensional bar code decoding, and reduces the computation amount.
Description
Technical field
The present invention relates to 2D bar code technology field, particularly relate to a kind of mobile phone two-dimensional bar code decoding method.
Background technology
Along with the development of new and high technology, people wish to represent more information by bar code in limited geometric space, so two-dimensional bar code is just applied and gives birth to.The information density of two-dimensional bar code is higher, and especially for QR code, its recognition technology is relatively complicated, more to the quick detection and Identification research of two-dimensional bar code in the last few years.Along with the communications industry develops rapidly, the combination of mobile phone and two-dimensional bar code recognition technology defines a new field and mobile phone two-dimensional bar code.But owing to gathering the quality problems of image in bar code process itself, two-dimensional bar code is after treatment easy to the mistake or the disappearance that cause partial data, seriously reduces the accuracy of two-dimensional bar code decoding.
Summary of the invention
The object of the invention is to, by a kind of mobile phone two-dimensional bar code decoding method, solve the problem that above background technology part is mentioned.
For reaching this object, the present invention by the following technical solutions:
A kind of mobile phone two-dimensional bar code decoding method, it comprises the steps:
S101, coding: data analysis, data encoding, Error Correction of Coding, the final information of structure, arrangement numeral, mask, production form and version information;
S102, decoding: the threshold value determining input picture, be converted into dark color and light module by image; According to preset ratio determination position sensing figure; The centre coordinate of analysis position detection image, calculates the Quick Response Code anglec of rotation and corrects; According to the difference calculating module width between any two centre coordinates, and determine version number; Find positioning pattern and correcting image and set up sampling microwave network; To the pixel sampling in sampling microwave network, and construct 0 and 1 bitmap thus, represent dark pixels with 1, represent light pixel with 0; To form decoding of information, obtain error-correction level and the mask pattern of symbol; With mask pattern, XOR process is carried out to the code area of symbol; According to symbol version and error correction demand, again codeword sequence is pressed module array according to the backward of arrangement numeral during coding; Mistake is substituted to symbolic coding district data correction and refuses read error; By reconfiguration data block sequence again, recover the bit stream of raw information; Different mode rule according to selecting during coding carries out decoding; Export decoded result.
Especially, in described step S101, data analysis specifically comprises: the data stream analyzing input, determines the character types that will carry out encoding; Error Correction of Coding specifically comprises: mobile phone two-dimensional bar code adopts RS error correction algorithm, and call sign is correctly decoded.
The mobile phone two-dimensional bar code decoding method that the present invention proposes can control and correct mistake, not only increases the success ratio of mobile phone two-dimensional bar code decoding, and decreases operand.
Accompanying drawing explanation
The mobile phone two-dimensional bar code decoding method process flow diagram that Fig. 1 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.Be understandable that, specific embodiment described herein is only for explaining the present invention, but not limitation of the invention.It also should be noted that, for convenience of description, illustrate only part related to the present invention in accompanying drawing but not full content, unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present invention understand usually.Term used herein, just in order to describe specific embodiment, is not intended to be restriction the present invention.
Please refer to shown in Fig. 1, the mobile phone two-dimensional bar code decoding method process flow diagram that Fig. 1 provides for the embodiment of the present invention.
In the present embodiment, mobile phone two-dimensional bar code decoding method specifically comprises the steps:
S101, coding: data analysis, data encoding, Error Correction of Coding, the final information of structure, arrangement numeral, mask, production form and version information.Data analysis specifically comprises: the data stream analyzing input, determines the character types that will carry out encoding; Error Correction of Coding specifically comprises: mobile phone two-dimensional bar code adopts RS error correction algorithm, and call sign is correctly decoded.
S102, decoding: the threshold value determining input picture, be converted into dark color and light module by image; According to preset ratio determination position sensing figure; The centre coordinate of analysis position detection image, calculates the Quick Response Code anglec of rotation and corrects; According to the difference calculating module width between any two centre coordinates, and determine version number; Find positioning pattern and correcting image and set up sampling microwave network; To the pixel sampling in sampling microwave network, and construct 0 and 1 bitmap thus, represent dark pixels with 1, represent light pixel with 0; To form decoding of information, obtain error-correction level and the mask pattern of symbol; With mask pattern, XOR process is carried out to the code area of symbol; According to symbol version and error correction demand, again codeword sequence is pressed module array according to the backward of arrangement numeral during coding; Mistake is substituted to symbolic coding district data correction and refuses read error; By reconfiguration data block sequence again, recover the bit stream of raw information; Different mode rule according to selecting during coding carries out decoding; Export decoded result.
Technical scheme of the present invention can control and correct mistake, not only increases the success ratio of mobile phone two-dimensional bar code decoding, and decreases operand.
Note, above are only preferred embodiment of the present invention and institute's application technology principle.Skilled person in the art will appreciate that and the invention is not restricted to specific embodiment described here, various obvious change can be carried out for a person skilled in the art, readjust and substitute and can not protection scope of the present invention be departed from.Therefore, although be described in further detail invention has been by above embodiment, the present invention is not limited only to above embodiment, when not departing from the present invention's design, can also comprise other Equivalent embodiments more, and scope of the present invention is determined by appended right.
Claims (2)
1. a mobile phone two-dimensional bar code decoding method, is characterized in that, comprises the steps:
S101, coding: data analysis, data encoding, Error Correction of Coding, the final information of structure, arrangement numeral, mask, production form and version information;
S102, decoding: the threshold value determining input picture, be converted into dark color and light module by image; According to preset ratio determination position sensing figure; The centre coordinate of analysis position detection image, calculates the Quick Response Code anglec of rotation and corrects; According to the difference calculating module width between any two centre coordinates, and determine version number; Find positioning pattern and correcting image and set up sampling microwave network; To the pixel sampling in sampling microwave network, and construct 0 and 1 bitmap thus, represent dark pixels with 1, represent light pixel with 0; To form decoding of information, obtain error-correction level and the mask pattern of symbol; With mask pattern, XOR process is carried out to the code area of symbol; According to symbol version and error correction demand, again codeword sequence is pressed module array according to the backward of arrangement numeral during coding; Mistake is substituted to symbolic coding district data correction and refuses read error; By reconfiguration data block sequence again, recover the bit stream of raw information; Different mode rule according to selecting during coding carries out decoding; Export decoded result.
2. mobile phone two-dimensional bar code decoding method according to claim 1, it is characterized in that, in described step S101, data analysis specifically comprises: the data stream analyzing input, determines the character types that will carry out encoding; Error Correction of Coding specifically comprises: mobile phone two-dimensional bar code adopts RS error correction algorithm, and call sign is correctly decoded.
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| CN108734048A (en) * | 2018-05-29 | 2018-11-02 | 西安理工大学 | Various dimensions Quick Response Code based on proprietary code generates and interpretation method |
| CN109902528A (en) * | 2019-02-28 | 2019-06-18 | 尤尼泰克(嘉兴)信息技术有限公司 | A kind of decoding method of two dimensional code |
| CN110889304A (en) * | 2018-09-11 | 2020-03-17 | 杭州海康威视数字技术股份有限公司 | Two-dimensional code quality evaluation method and device, storage medium, electronic device and system |
| CN111046996A (en) * | 2019-11-27 | 2020-04-21 | 湖南省科腾信安智能科技有限公司 | Color QR code generation and identification method |
| CN113557529A (en) * | 2019-03-12 | 2021-10-26 | 微软技术许可有限责任公司 | Hybrid two-dimensional bar code reader |
| CN117350317A (en) * | 2023-12-05 | 2024-01-05 | 北京紫光青藤微系统有限公司 | Decoding method and device for bar code image and electronic equipment |
| WO2024032379A1 (en) * | 2022-08-11 | 2024-02-15 | 无锡盈达聚力科技有限公司 | Optical information collector and method therefor |
| CN113557529B (en) * | 2019-03-12 | 2024-05-24 | 微软技术许可有限责任公司 | Mixed two-dimensional bar code reader |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108734048A (en) * | 2018-05-29 | 2018-11-02 | 西安理工大学 | Various dimensions Quick Response Code based on proprietary code generates and interpretation method |
| CN110889304A (en) * | 2018-09-11 | 2020-03-17 | 杭州海康威视数字技术股份有限公司 | Two-dimensional code quality evaluation method and device, storage medium, electronic device and system |
| CN110889304B (en) * | 2018-09-11 | 2023-04-28 | 杭州海康威视数字技术股份有限公司 | Two-dimensional code quality evaluation method and device, storage medium, electronic equipment and system |
| CN109902528A (en) * | 2019-02-28 | 2019-06-18 | 尤尼泰克(嘉兴)信息技术有限公司 | A kind of decoding method of two dimensional code |
| CN109902528B (en) * | 2019-02-28 | 2023-10-20 | 尤尼泰克(嘉兴)信息技术有限公司 | Encoding and decoding method of two-dimension code |
| CN113557529A (en) * | 2019-03-12 | 2021-10-26 | 微软技术许可有限责任公司 | Hybrid two-dimensional bar code reader |
| CN113557529B (en) * | 2019-03-12 | 2024-05-24 | 微软技术许可有限责任公司 | Mixed two-dimensional bar code reader |
| CN111046996A (en) * | 2019-11-27 | 2020-04-21 | 湖南省科腾信安智能科技有限公司 | Color QR code generation and identification method |
| CN111046996B (en) * | 2019-11-27 | 2023-08-04 | 湖南省科腾信安智能科技有限公司 | Color QR code generation and identification method |
| WO2024032379A1 (en) * | 2022-08-11 | 2024-02-15 | 无锡盈达聚力科技有限公司 | Optical information collector and method therefor |
| CN117350317A (en) * | 2023-12-05 | 2024-01-05 | 北京紫光青藤微系统有限公司 | Decoding method and device for bar code image and electronic equipment |
| CN117350317B (en) * | 2023-12-05 | 2024-03-26 | 北京紫光青藤微系统有限公司 | Decoding method and device for bar code image and electronic equipment |
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| CN104992207B (en) | 2018-08-14 |
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