毕业设计 数字票据系统身份信息获取与编码单元的设计与实现.doc

数字票据系统身份信息获取与编码单元的设计与实现 摘要：近年来，随着互联网、物联网的高速发展，作为信息和数据自动采集重要手段之一的QR二维码技术在我国得到了快速推广与应用。它能从纵向和横向两个维度进行编码，从而大大提升编码容量，对数字，字母，中文，图片和声音都可以编码，而且具备很强的纠错能力。 此次毕业设计是科研项目的一部分，重点是将身份证中的图片转换成QR二维码，包括获取身份证信息图片和将图片编码成QR二维码两个子模块。程序使用Visual C++开发，最终生成一个DLL文件，供科研项目其他模块调用。 在获取身份信息图片的模块中，通过使用身份证阅读器提供的SDK编写程序来读取身份证中的信息包括相片。然后对照片进行数字图像处理，包括灰度化、尺寸缩放和JPEG有损编码，以便满足二维码编码模块对图片文件大小的要求。 在图片编码到QR二维码的模块中，会将处理后的图片读入内存进行编码，通过标准算法进行QR二维码编码。然后将编码结果发送给调用DLL的其它模块。 本文通过编写的测试程序对编码结果进行了展示，表明已达到到了原定设计目标，本次论文的成果对将图像信息编码成二维码的应用具有一定的参考价值。 关键字：二代身份证 照片获取 图像处理 QR二维码 DLL模块 Design and implementation of digital ticket system status information acquisition and encoding units Abstract：In recent years, as the Internet, the rapid development of the Internet of Things, as the information and data collected automatically one of the important means of the QR code technology in China has been rapid popularization and application. It can be encoded from both vertical and horizontal dimensions, thereby greatly enhancing the coding capacity of numbers, letters, Chinese, pictures and sounds can be encoded, and with a strong error correction capability. The graduation project is part of research projects, focusing on the identity of the image into the QR Code, including access to identity information, pictures and the picture is encoded into the QR code two sub-modules. Program using Visual C ++ development, and ultimately generate a DLL file, calls for research projects by other modules. Obtaining identity module image by using card reader SDK provides programming to read the identification information including photos. Then photograph digital image processing, including graying, size scaling and JPEG lossy coding, in order to meet the two-dimensional code module for image file size requirement. In the image coding to the QR code module, it will be processed after the picture is encoded into memory, perform the QR code encoded using standard algorithms. And then send the results to other coding module called the DLL. In this