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Research on Improved Character Encoding Methods Based on qr code

Chinese Journal of Electronics 2019年第6期28卷 1170-1176页

作者： KANG Bohan JIA Jingdun GAO Wanlin ZHANG Ning School of Information Central University of Finance and Economics National Rural Technology Development Center Ministry of Science and Technology College of Information and Electrical Engineering China Agricultural University

With the popularity of mobile terminals,Quick response(qr) code, which acts as a convenient and quick way to transfer graphic information, has been widely used in various fields. qr code is a 2D matrix code which contains information in both vertical and horizontal directions. In order to promote the characters encoding efficiency, we propose the improved character encoding methods based on qr code. Specifically, we divide the types of encoding data into Chinese characters and nonChinese characters, and thus optimizing their encoding methods separately: we apply the branch-bound algorithm to optimize the encoding pattern selection of qr code; as for Chinese characters, based on the Chinese characters use frequency generated by Url crawler system, we design a new encoding method for Chinese characters. Our approach has been shown to afford better experimental test results compared with traditional encoding methods of qr code.

关键词： qr code qr code encoding methods Branch-bound algorithm Chinese characters use frequency

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Application of RS codes in Decoding qr code

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High Technology Letters 2003年第4期9卷 67-69页

作者：朱素霞 Ji Zhenzhou Cao Zhiyan Computer Science Academy Harbin Institute of Technology Harbin 150001 P.R.China

The qr code is a 2 dimensional matrix code with high error correction capability. It employs RS codes to generate error correction codewords in encoding and recover errors and damages in decoding. This paper presents several qr code’s virtues, analyzes RS decoding algorithm and gives a software flow chart of decoding the qr code with RS decoding algorithm.

关键词： qr code RS codes decoding flow chart

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qr code labeling system for Xueteng-related herbs based on DNA barcode

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Chinese Herbal Medicines 2019年第1期11卷 52-59页

作者： Hong Zhou Shuang-jiao Ma Jing-yuan Song Yu-lin Lin Zheng-jun Wu Zheng-zhou Han Hui Yao Engineering Research Center of Tradition Chinese Medicine Resource Ministry of Education Institute of Medicinal Plant Development Chinese Academy of Medical Sciences & Peking Union Medical College China Resources of Sanjiu Medical & Pharmaceutical Co. Ltd.

Objective: Xueteng-related herbs include Spatholobi Caulis(Jixueteng in Chinese), Sargentodoxae Caulis(Daxueteng in Chinese), Kadsurae Caulis(Dianjixueteng in Chinese), and other medicinal plant stems that release reddish-brown juices after being cut. However, similarity in phonetic spelling and sound leads to their misuse in clinic or commercial circulation. Accurate labeling is imperative as well as effective for species ***: In this study, the ITS2 sequences of 76 samples of Xueteng-related herbs were obtained and analyzed to identify them. And then they were converted into qr codes using the open source PHP qr code. Also, a DNA barcode reference library was established according to these sequences and was used to authenticate the 25 samples of Xueteng-related herbs collected from the ***: The lengths of the ITS2 sequences of different Xueteng-related herbs ranged from 207 to 235 bp and the GC contents were 57.5%-71.0%. Jixueteng, Daxueteng, and Dianjixueteng were clustered into three clades respectively in the neighbor-joining(NJ) phylogenetic tree, and the efficiency of the BLAST method was 100%. The ITS2 sequences of different Xueteng-related herbs were presented vividly and specifically in qr code. Twenty-two of all 25 commercial samples were consistent with the original labels, whereas three samples marked "Dianjixueteng" were authenticated as "Jixueteng".Conclusion: qr code labeling system based on DNA barcode is an effective labeling system of Xuetengrelated herbs for their circulation regulation.

关键词： DNA labeling system identification ITS2 qr code Xueteng-related herbs

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Book Retrieval Method Based on qr code and CBIR Technology

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Journal on Artificial Intelligence 2019年第2期1卷 101-110页

作者： Qiuyan Wang Haibing Dong School of Electrical and Information Engineering Hunan Institute of TechnologyHengyangChina.

It is the development trend of library information management,which applies the mature and cutting-edge information technology to library information *** order to realize the rapid retrieval of massive book information,this paper proposes a book retrieval method combining qr code with image retrieval *** method analyzes the visual features of book images,design a book image retrieval method based on boundary contour and regional pixel distribution features,and realizes the association retrieval of book information combined with the qr code,so as to improve the efficiency of book *** experimental results show that,the books can be retrieved effectively through the boundary contour and regional pixel distribution features,the book information can be displayed through qr code,readers can be provided with fast and intelligent massive book retrieval services.

关键词： Book retrieval image retrieval qr code visual features.

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A Secure Visual Secret Sharing Scheme with Authentication Based on qr code

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Journal on Big Data 2021年第2期3卷 85-95页

作者： Xinwei Zhong Lizhi Xiong Zhihua Xia Nanjing University of Information Science&Technology Nanjing210044China

With the rise of the Internet of Things(IoT),various devices in life and industry are closely *** of its high payload,stable error correction capability,and convenience in reading and writing,Quick Response(qr)code has been widely researched in ***,the security of privacy data in IoT is also a very important *** the same time,because IoT is developing towards low-power devices in order to be applied to more fields,the technology protecting the security of private needs to have the characteristics of low computational *** Secret Sharing(VSS),with its features of safety and low computational cost,can fully meet the requirements of communication security in ***,a VSS scheme with qr code(VSS-qr)was proposed and has been applied to some *** VSS-qr,the secret is shared into a series of *** shares are usually common qr codes,which cannot cause the attention of the ***,if there is dishonesty among participants,the secret cannot be recovered,which will lead to VSS-qr cannot be widely used due to its inadequate *** this paper,we propose a visual secret sharing scheme with authentication based on qr code(VSSA-qr).Both the reconstructed secret qr code and shares can be verified whether they are forged by *** above-mentioned operations conveniently are performed on low-power qr scanning *** only does the proposed scheme prevent some dishonest participants or attackers from cheating,but also prevent all participants from *** addition,the payload is the qr code itself,which is higher than other *** analysis and experiments prove that the proposed scheme is effective.

关键词： qr code visual secret sharing low computational complexity authentication

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qr code二维条码编解码系统的应用研究

QR Code二维条码编解码系统的应用研究

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作者：徐辉南京邮电大学

学位级别：硕士

与一维条码相比,.二维条码具有独特的优势,凭借其容量大、纠错能力能、可靠性高、保密性强等优点,使得二维条码作为信息的载体在生产和生活中得到广泛的推广。qr code是一种矩阵式二维条码,除了具有二维条码的优点之外,还具有超高速全... 详细信息

与一维条码相比,.二维条码具有独特的优势,凭借其容量大、纠错能力能、可靠性高、保密性强等优点,使得二维条码作为信息的载体在生产和生活中得到广泛的推广。qr code是一种矩阵式二维条码,除了具有二维条码的优点之外,还具有超高速全方位识读、编码字符广泛、能更有效表示汉字等自身特点,是适合在国内推广的二维条码之一。本课题主要研究了qr code编/译码系统的理论与实现。本文简要介绍qr code的发展状况,结合qr code国家标准,详细分析了qr码的基本特点、符号结构、编码和译码流程等,并在开源Reed-Solomon码算法的基础上,采用C/C++语言加以实现和完善编码和译码系统。同时对编译码过程中采用的纠错能力较强的多进制线性分组码Reed-Solomon码做了深入研究和探讨,分析了它的运算规则、运算电路、实现方法以及在qr码中的应用。在编码系统的设计过程中,引进了交织算法,对其进行了详细的阐述。在译码系统的设计过程中,对图像预处理作了简要分析,对数据译码过程作了仔细的研究,并采用了对填充码字进行预修正的思想,与交织算法的配合使用扩大了qr code的图片抗污染面积。本文在编码和译码系统的设计过程中,均加以实例进行了详细说明。

关键词：二维条码 qr code 纠错编码 RS码

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A Distributed Secret Sharing Method with qr code Based on Information Hiding

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Journal of Cyber Security 2021年第4期3卷 217-225页

作者： Pengcheng Jiang Yu Xue Nanjing University of Information Science&Technology Nanjing210044China

qr codes are applied widely on the Internet and mobile devices in recent *** open standards and the characteristics of easy to generate lead to anyone can generate their qr code ***,the qr code does not have the ability of hiding information,which leads to everyone can get access to read the content in any qr code,including those hiding some secret content in the bytes of qr ***,in recent years,information tampering and information leakage cases caused by poor security of two-dimensional code occur frequently,especially in the financial field and multi-party verification *** codes are almost impossible to use in these ***,this paper proposes a distributed information sharing method based on information hiding qr *** method can make secret code in qr code safer and robust,and the secret shared between receivers can be used for decryption and attacking ***,on the one hand,the information hiding method can maximize the capacity of embedded secret information,on the other hand,it can prevent attacks by disguised attackers and recover hidden secret information through *** paper illustrates the feasibility of this scheme through the form of theoretical proof.

关键词： qr code image encryption information hiding secret sharing

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Power Marketing Ubiquitous Learning Mode Based on qr code of the Internet of Things

Power Marketing Ubiquitous Learning Mode Based on QR Code of...

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作者： Jinliang Wang Jingfei Wang Jin Qin Wenbo Wang Weiwei Yang Power Marketing Ttraining Department State Grid of China Technology College

Based on qr code of the Internet of Things, a ubiquitous learning mode is established to construct a new model of ubiquitous learning. This model can be applied to the job sites and trainings, which can effectively promote the application of new technologies, improve the training and learning effects, and achieve the purpose of learning at any time or any place. Based on qr code of the Internet of Things, the basic idea of the new ubiquitous learning mode is "Discovering Problems → Scanning code and Learning → Solving Problems → Thinking and Summarizing", which can create a learning style of "everyone learns, learns at any time, learns at everywhere".

关键词： Internet of Things qr code Ubiquitous Learning Mode

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qr code纠错编码及在MES系统中的应用研究

QR Code纠错编码及在MES系统中的应用研究

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作者：马晓鹏华中科技大学

学位级别：硕士

制造执行系统（Manufacturing Execution System，MES）是面向车间生产过程的实时信息管理系统。数据采集功能是MES的基础模块，其能否及时反馈生产过程中的数据，对MES实现其计划、优化、过程透明等作用至关重要。本论文主要研究qr Cod... 详细信息

制造执行系统（Manufacturing Execution System，MES）是面向车间生产过程的实时信息管理系统。数据采集功能是MES的基础模块，其能否及时反馈生产过程中的数据，对MES实现其计划、优化、过程透明等作用至关重要。本论文主要研究qr code条码技术及其在面向离散制造企业的MES系统数据采集中的具体应用。在概述MES的同时，分析了面向离散制造企业MES系统的总体框架与功能结构，描述了数据采集对其它功能模块的支撑关系，并由此提出“qr code条码技术+触摸屏”的数据采集解决方案，作为对现有数据采集系统的补充和优化。 qr code具有开放性的标准、特有的汉字字符集、能高效地表示汉字，因此更适合我国企业的应用需求。本文对qr code符号结构及编码流程进行了分析，重点研究了编码过程中的RS纠错算法。采用基于多项式除法的算法程序，成功生成纠错码字，并在存有网址的qr code符号生成过程中得到验证。条码技术是集编码、印刷、识别、数据采集和处理于一身的技术。在分析qr code条码技术与MES系统之间的集成需求及集成总体框架的基础上，制定了基于语义的条码生成规则;以VC6.0为开发工具设计了硬件程序管理器，实现了条码硬件设备与MES系统之间的信息传递及与业务流程的相融合;通过采用实时数据库存储技术，确保信息查询与反馈的高效性。以某企业制造车间为例，通过明确MES系统需要采集的数据及信息元素，探讨、研究了qr code条码技术在MES系统登录、生产任务执行、车间事件管理、设备状态数据采集等方面的具体应用及实现方法。

关键词：离散制造制造执行系统数据采集 qr code 纠错算法

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qr code识别算法及其在手机上的应用

QR Code识别算法及其在手机上的应用

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作者：孙雷东北大学

学位级别：硕士

本文主要论述qrcode二维条码的译码过程,对采集到的图像进行灰度化、中值滤波、二值化处理,然后根据条码标准所定义的数据编码程序对解析出来的数据进行重组,经过纠错处理最终得到原始信息数据。以及条码识别在手机上的具体应用,如短信... 详细信息

本文主要论述qrcode二维条码的译码过程,对采集到的图像进行灰度化、中值滤波、二值化处理,然后根据条码标准所定义的数据编码程序对解析出来的数据进行重组,经过纠错处理最终得到原始信息数据。以及条码识别在手机上的具体应用,如短信、wap、名片识别等。手机拍摄的图片受拍摄时的光线强度、角度及拍摄时qrcode图片本身是否弯曲、噪声等影响,拍摄出的图片有的很模糊,有的还发生了不同程度的变形;同时由于手机本身的处理能力较弱,内存也较小,所以对拍摄后识别的图片的预处理要求很高,预处理的好坏直接影响到后面的识别,同时也对识别算法本身的时间、空间复杂度要求很高。针对上述的问题,得到识别图像后,对图像的预处理首先采用了灰度化技术,不仅降低了存储空间,而且便于使用灰度直方图进行相关的处理;然后采用了中值滤波技术,中值滤波容易去除孤立点,线的噪声同时保持图象的边缘;最后采用了局部阈值的二值化算法,这些预处理很好的解决了模糊图像的问题。在识别算法中采用了自适应的网格采样算法,该算法根据采集图像的具体形状做出独立于图像的数据采样网格矩阵,根据网格交叉点坐标对图像进行数据采样,很好地解决了图像变形问题。

关键词：数字图像处理 qr code 纠错码手机应用

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