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http://dx.doi.org/10.14801/kitr.2014.12.10.173

A Study on Method to Improve Recognition Rate of Digital Watermark Using QR Code  

Cho, Dae-Jea (Dept. of Multimedia Eng., Andong National University)
Koh, Jae-Sung (Dept. of Multimedia Eng., Andong National University)
Publication Information
The Journal of Korean Institute of Information Technology / v.12, no.10, 2014 , pp. 173-179 More about this Journal
Abstract
In existing digital watermarking method, there is a limit to the size of the watermark can be inserted, depending on the size of the original image so have been studied a method of using QR code that can hold more information as a digital watermark. QR-code not only can save much information in itself, but also can include various informations because of its link function. This paper proposes the method to improve the recognition rate for the extracted QR code has been inserted as a watermark. The algorithm proposed in this paper is designed in such a way to repair damaged by analyzing the structure of QR code. QR code has a function to recover the error for itself but the embedded information is lost by severe damage. When the post-processing is applied by the suggested method in the paper, recognition rate is improved because can recover the embedded data by correcting errors even if watermarks are severe damaged.
Keywords
QR code; PN-sequence; chaos sequence; digital watermark; data hiding;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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