期刊名称：International Journal of Computer Science & Technology
印刷版ISSN：2229-4333
电子版ISSN：0976-8491
出版年度：2012
卷号：3
期号：1
页码：415-420
语种：English
出版社：Ayushmaan Technologies
摘要：The QR code (Quick Response code) is a two-dimensionalbarcode which can be stored quite complex and large data andbe decoded very fast. In this paper, a new distortion correctionmethod is proposed to correct distorted QR code images taken bymobile phones adaptively. Firstly, the QR code image is fltered.Then, the gradient-based Hough Transform (HT) is modifed toshorten the processing time and preserve enough information whendetecting the contour lines of QR code symbol. An algorithm foracquiring the four vertices of QR code is proposed during theprocess. At last, the Inverse Perspective Transformation (IPT)and gray level interpolation are performed. Experiments showthat this algorithm can achieve satisfactory results under variousacquisition situations.
