QR码图像的矫正与定位方法研究

Rectification and Localization of Quick Response Code Image

QR二维条码作为一种可高速、全方位识别的二维条码,已经在各行各业中得到了广泛的应用。本文针对QR条码图像的识别过程中可能遇到的图像倾斜、几何失真等问题进行了研究,提出了通过双线性变换矫正变形的条码图像,然后使用QR条码符号特性对图像进行旋转并定向。实验证明,本文的方法简单有效,可以用于提高QR条码的正确识别率。

Mainly focus on the methods of rectification and localization of the quick response code images. During the processing of QR code images, the images are often distorted： slant and geometry deforming, the distortions do harm to the recognition of the QR code. Therefore, first the bilinear transform is referred for the rectification of geometry distortion of QR Code images. Then with the research in the characters of QR code symbols, a simple, effective and high-speed method of localization and orientation is brought up. It is shown that by the rectification and localization method, the precision rate of QR code recognition is improved.