半色调二维码图像嵌入技术(最终版).docxVIP

本科毕业设计（论文）题目：半色调二维码图像嵌入技术摘要QR码是目前最流行的二维空间条码之一。 QR码比较普通条码可以存储更多数据，亦无需要像普通条码般在扫描时需要直线对准扫描仪，存在一定的倾斜角度时，仍然能快速识别，并且十分方便。二维码极大的便利的我们的生活，然而，二维码是用某种特定分布的黑白相间的图形记录数据符号信息的。对于人来说，是无法直接通过肉眼读取其中的信息的。二维码不能直观地表示其所存储的数据的含义、所属等。在铺天盖地的二维码中，可视化二维码能够吸引更多用户的眼球，提高扫码率。加强二维码的直观视觉表现，便成了二维码可视化设计的一个难题。本文提出一种系统的高效的生成可视化二维码的方法，称为半色调二维码图像嵌入算法。论文首先从二维码的编解码标准分析，总结二维码编码技术的一般步骤，并对编码过程中的关键技术进行详细剖析。然后分析图像的半色调化技术，并进行比较分析。最后研究并实现半色调二维码图像嵌入技术。将图像半色调化后，在二维码的编码过程嵌入到其中，编码形成按照原有图像的规律分布的二维码。本论文提出的半色调二维码图像嵌入技术，能够得到的二维码能直观的表现原有图像的内容，又能存储相应的数据信息。根据使用场景，进行了多种优化，并进行了大量的测试。通过二维码的编码优化，提高半色调二维码的可靠性。通过彩色图像嵌入优化，使得最后能够产生彩色二维码，更加接近目标图像。关键词：半色调图像；图像二维码；可视化二维码AbstractQR codes are one of the most popular two-dimensional bar-code. QR code can store more data than common barcodes, there is no need to be like an ordinary bar code scanner aligners as needed during the scan , when there is a certain tilt angle, still able to quickly identify, and very convenient. QR code greatly facilitated our lives, however, the two-dimensional code is a graphical symbol information for a particular recording data distribution of black and white. For people, itis not directly visually readable information. QR code does not represent the meaning of the data stored in itdirectly. In the overwhelming QR codes, the visual QRcode can attract the attention of more users and improve scan rate. Strengthen intuitive visual representation of two-dimensional codes, has become the visual design problem.In this paper, we propose a systematic and efficient method to generate visual QR code, called halftone QR code image embedded algorithm. Firstly, we analyzetheQRcode codec standardspecification, and summarize the general steps of the QR codeencoding techniques, and carried out a detailed analysis of key technology in encoding process. Then analyze the digital halftone technology to image, and conduct a comparative analysis to common algorithms. Then study the halftone QR code image embedded technology. Finally, design and implement the halftone QR code ima