Anti-counterfeiting E-ticketing Digital Watermarking Algorithm Based on QR 2D Barcode
Anti-counterfeiting E-ticketing Digital Watermarking Algorithm Based on QR 2D Barcode
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发表时间：
2013
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通讯作者：
Chen Yu-ming
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作者：
Chen Yu-ming
基于二维码的电子票务业务成为当前数字时代的一个热点，但其防伪问题仍有待解决。本文首先对防伪电子票务数字水印算法的不可感知性、容量、鲁棒性等主要性能参数进行了分析和讨论，然后指出了防伪电子票务数字水印算法与一般多媒体数字水印算法的参数差异。由于二维码实际上是一种二值图像，本文对基于二维码的电子票务防伪数字水印算法中的几种经典二值图像水印算法进行了测试和说明。根据实验结果和分析，提出了一种基于二维码的电子票务防伪数字水印算法。该算法在空域内嵌入水印，水印位置由混沌密钥确定。为了提高防伪性能，最后提出了混沌密钥的自适应调整策略，大大提高了水印容量和鲁棒性。
E-ticketing business based on QR 2D barcode becomes one hotspot in the current digital era,but its anti-counterfeiting problem is still left to be resolved.This paper firstly analyses and discusses such primary performance parameters as imperceptibility,capacity,and robustness for anti-counterfeiting E-ticketing digital watermarking algorithm,and then the differences of the parameters between anti-counterfeiting E-ticketing digital watermarking algorithm and general multimedia digital watermarking algorithm are pointed out.Since QR barcode is actually a binary image,this paper secondly tests and illustrates some classic binary image watermarking algorithms for anti-counterfeiting E-ticketing digital watermarking algorithm based on QR 2D barcode.According to the Experimental results and analysis,a novel anti-counterfeiting E-ticketing digital watermarking algorithm based on QR 2D barcode is then proposed.The proposed algorithm embeds watermarks in spatial domain,and the watermarked positions are decided by a chaos key.To improve the anti-counterfeiting performance,adaptive adjustment strategy for chaos key is finally proposed,which greatly increases watermarking capacity and improve its robustness.