节点文献
基于二维条码QR码的编码及图像处理技术的研究
【作者】 路阳；
【作者基本信息】 太原科技大学 ， 计算机应用技术， 2012， 硕士
【摘要】 随着信息技术的快速发展，条码在社会生活的各种领域中得到了广泛的应用，极大提高了各行业的生产工作效率。条码识别技术是以条码理论、光电技术、计算机技术和通信技术为基础的综合性技术，是信息数据自动输入和识别的重要手段。当今世界，二维条码技术逐渐成为条码技术领域的主流。目前国际上使用的二维条码有好几种，其中，QR码因其识别速度快、可全方位识读等优点获得广泛应用，本论文将选取QR码作为研究对象。本论文的主要任务是基于二维条码的码制标准的基础上，实现对信息数据的二位编码，并利用图像处理技术校正二维条码图像，使其得到高速准确识别。本论文的研究目的和内容是通过分析QR码的符号结构和编码规则，用C++模拟实现了数据的编码；在图像处理方面，提出有效的QR码图像二值化算法，消除了光照不均对条码图像的影响；采用改进的Canny算子和Hough变换对图像进行边缘检测并定位条码符号，将条码从原始图像中分离出来，最后运用差值运算对图像进行校正，使其得到正确解码。
【Abstract】 With the rapid development of information technology, bar code is usedwidely in the various fields of social life, and it greatly enhances the workefficiency of every industry. Bar code identification technology is acomprehensive technology based on computer technology, informationtechnology and photoelectric sensing technology. It now becomes veryimportant mean of data automatic inputting and identification. At present, twodimensional bar code technologies has become the mainstream in the bar codetechnology field. There are several kinds of two dimensional bar code is beingused in the world, QR Code become commonly used bar code technologybecause its advantage such as fastly identification and omnidirectional readingability. This paper will select QR code as researching object.The task of this paper is based on the standard of two dimensional bar codesystem to realize the information encoding which, and adopt image processingtechnology to revise the two-dimension al code, make the bar code speedily andaccurately identify. The purpose of this paper is to encode information data andusing C++to realize it by analyzing the symbol structure of QR Code and theencoding rules; it puts forward an effective algorithm of QR Code binarizationto eliminate the effect of non-uniform illumination; and adopt an improvedCanny operator and Hough algorithm for edge detection and barcodelocation;finally,use interpolation algorithm on image correction, make the barcode speedily and accurately identify.