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Printer Mechanism-Level Information Embedding and Extraction for Halftone Documents – New Results

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Embedded information in printed documents can be used for a number of applications such as authentication of document content, proof of ownership, and identification of the printer that produced documents. One approach is to embed information in the halftone portions at the printer mechanism-level. The advantage of printer mechanism-level information embedding is that information is directly embedded in printed documents without any further steps that might alter the intended information. In this paper, we describe a printer mechanism-level information embedding and detection scheme as an extension to our previous result. An information bit is embedded by changing the position of a dot to be developed and these information bits are grouped together to be robust to noise caused by various reasons. The previous detection algorithm is modified to improve the detection rate of embedded information in printed documents. Consequently, we are now able to embed information using a reduced level of dot shift, which better maintains the halftone image quality. The experimental results show that our proposed scheme is feasible to embed and detect information in printed documents.
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Document Type: Research Article

Publication date: 2007-01-01

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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