一种快速响应码的图像预处理方法  

An Image Preprocessing Method for Quick Response Code

作　　者：包怡[1] 高美凤[1] 

机构地区：[1]江南大学通信与控制工程学院,江苏无锡214122

出　　处：《测控技术》2009年第2期21-23,27,共4页Measurement & Control Technology

摘　　要：QR码(快速响应矩阵码)作为一种便捷、安全的信息载体,已经在各行业得到了广泛的应用。首先改进了传统算法,将光照不均下的图像进行二值化;接着利用双线性变换与几何变换结合,矫正图像在采集过程中的几何失真,并简化了运算;最后使用二值形态学插值修补。实验证明,该方法简单有效,可用于提高QR码识别率。As a convenient and secure information carrier, QR code（ quick response code） has been widely used in all industries. An improved traditional binary method is referred for images with uneven illumination. During the process of image collection, the image would be distorted. Bilinear transform and geometric transform are used to deal with this problem, and the operation is simplified. Finally, the morphology is used to repair the image. After all, the code could be recognized. It is showed by experiments that the method is simple and effective, which can be used to improve recognition precision rate.

关 键 词：QR码 二值化 几何变换 形态学 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]