1 March 2007 Channel model and operational capacity analysis of printed text documents
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In today's digital world securing different forms of content is very important in terms of protecting copyright and verifying authenticity. One example is watermarking of digital audio and images. We believe that a marking scheme analogous to digital watermarking but for documents is very important. In this paper we describe the use of laser amplitude modulation in electrophotographic printers to embed information in a text document. In particular we describe an embedding and detection process which allows the embedding of between 2 and 8 bits in a single line of text. For a typical 12 point document this translates to between 100 and 400 bits per page. We also perform an operational analysis to compare two decoding methods using different embedding densities.
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Aravind K. Mikkilineni, Aravind K. Mikkilineni, Pei-Ju Chiang, Pei-Ju Chiang, George T. C. Chiu, George T. C. Chiu, Jan P. Allebach, Jan P. Allebach, Edward J. Delp, Edward J. Delp, } "Channel model and operational capacity analysis of printed text documents", Proc. SPIE 6505, Security, Steganography, and Watermarking of Multimedia Contents IX, 65051U (1 March 2007); doi: 10.1117/12.704136; https://doi.org/10.1117/12.704136

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