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首页> 外文期刊>Journal of Information Security Research >A Digital Watermarking Approach Based on DCT Domain Combining QR Code and Chaotic Theory
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A Digital Watermarking Approach Based on DCT Domain Combining QR Code and Chaotic Theory

机译:结合QR码和混沌理论的DCT域数字水印方法

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摘要

This paper proposes a robust watermarking approach based on Discrete Cosine Transform (DCT) domain that combines Quick Response (QR) Code and chaotic system. When embed the watermark, the high error correction performance and the strong decoding capability of QR Code are utilized to decode the text watermark information which improves the robustness of the watermarking algorithm. Then the QR Code image is encrypted with chaotic system to enhance the security of this approach. Finally the encrypted image is embedded to the carrier image s DCT blocks after they underwent block-based Arnold scrambling transformation. During the extraction process, as long as the QR Code image can be decoded, the completeness and accuracy of the text watermarking information can be guaranteed. The results of simulation experiment show that this approach has high robustness and security and has, therefore, some practical value in the copyright protection.
机译:本文提出了一种基于离散余弦变换(DCT)域的鲁棒水印方法,该方法结合了快速响应(QR)码和混沌系统。嵌入水印时,利用QR码的高纠错性能和强大的解码能力对文本水印信息进行解码,提高了水印算法的鲁棒性。然后用混沌系统对二维码图像进行加密,以提高该方法的安全性。最终,在对加密的图像进行基于块的Arnold加扰变换之后,将其嵌入到载波图像的DCT块中。在提取过程中,只要可以对QR Code图像进行解码,就可以保证文本水印信息的完整性和准确性。仿真实验结果表明,该方法具有较高的鲁棒性和安全性,因此在版权保护方面具有一定的实用价值。

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