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Digital Watermarking Security in the Printing and Scanning Process of Image

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In this paper, a novel security method based on digital watermarking in printing and scanning is studied, and a watermarking algorithm based on discrete wavelet transform is proposed. First all, the principles and color space theory of color image watermarking is analyzed, and color distortion and geometric error caused by printing and scanning process are discussed. According to singular value decomposition and wavelet multi-resolution analysis, the digital watermarks were embedded into color image through embedding watermark into singular value of wavelet coefficients matrix. After embedding, the color image was printed with inkjet printer and scanned after the digital watermarks were embedded, then watermark extraction and Evaluation was performed. Experiment results show that the robustness and invisibility of this algorithm are strong, and that the digital watermarking proposed in this paper would be stand against general printing and scanning process. Compared with other anti-counterfeiting technology in security printing, the method in this paper has the advantages of low cost and simple implementation.
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Document Type: Research Article

Publication date: 2011-01-01

More about this publication?
  • For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

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