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@InProceedings{BorgesIzquMaye:2008:EfTeCo,
             abstract = "This paper improves the use of text color modulation (TCM) as a 
                         reliable text document data hiding method. Using TCM, the 
                         characters in a document have their color components modified 
                         (possibly unperceptually) according to a side message to be 
                         embedded. This work presents a detection metric and an analysis 
                         determining the detection error rate in TCM, considering an 
                         assumed print and scan (PS) channel model. In addition, a 
                         perceptual impact model is employed to evaluate the perceptual 
                         difference between a modified and a non-modified character. 
                         Combining this perceptual model and the results from the detection 
                         error analysis it is possible to determine the optimum color 
                         modulation values. The proposed detection metric also exploits the 
                         orientation characteristics of color halftoning to reduce the 
                         error rate. In particular, because color halftoning algorithms use 
                         different screen orientation angles for each color channel, this 
                         is used as an effective feature to detect the embedded message. 
                         Experiments illustrate the validity of the analysis and the 
                         applicability of the method.",
                title = "Efficient Text Color Modulation for Printed Side Communications 
                         and Data Hiding",
                  ibi = "6qtX3pFwXQZG2LgkFdY/V9gjK",
                  url = "http://urlib.net/ibi/6qtX3pFwXQZG2LgkFdY/V9gjK",
            publisher = "IEEE Computer Society",
            booktitle = "Proceedings...",
                  doi = "10.1109/SIBGRAPI.2008.23",
                  url = "http://dx.doi.org/10.1109/SIBGRAPI.2008.23",
             language = "en",
              address = "Los Alamitos",
               author = "Borges, Paulo and Izquierdo, Ebroul and Mayer, Joceli",
                 year = "2008",
         organization = "Brazilian Symposium on Computer Graphics and Image Processing, 21. 
                         (SIBGRAPI)",
  conference-location = "Campo Grande, MS, Brazil",
             keywords = "image processing, hardcopy watermarking.",
               editor = "Jung, Cl{\'a}udio Rosito and Walter, Marcelo",
           targetfile = "borges_P_TextDataHiding.pdf",
          affiliation = "Queen Mary, University of London and Queen Mary, University of 
                         London and {Universidade Federal de Santa Catarina}",
      conference-year = "12-15 Oct. 2008",
        urlaccessdate = "2022, May 21"
}


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