關鍵字查詢 | 類別:會議論文 | | 關鍵字:Multi-purpose watermarking with QR code applications

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序號 學年期 教師動態
1 108/2 資創系 張峯誠 副教授 會議論文 發佈 Multi-purpose watermarking with QR code applications , [108-2] :Multi-purpose watermarking with QR code applications會議論文Multi-purpose watermarking with QR code applicationsH.-C. Huang; Y.-H. Chen; F.-C. Chang; C.-T. Tsengmulti-purpose watermarking;robust watermarking;reversible data hiding; QR codesAbstract: Watermarking plays an important role in the applications of copyright protection and data authentication. In this paper, we apply the commonly used discrete cosine transform (DCT), and embed two watermarks into color images. For the first watermark we choose the QR code, and for the second one we employ the binary random sequence. With the classification of watermarking, robust watermarking is suitable for copyright protection, while fragile watermarking aims at authentication purposes. We embed the two watermarks into the low and mid frequency bands, respectively. When intentional attacks are applied, the first watermark can be extracted, while no attack is applied, both watermarks can survive. Simulations have demonstrated the capabilities o
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