Document marking and identification using both line and word shifting
INFOCOM '95 Proceedings of the Fourteenth Annual Joint Conference of the IEEE Computer and Communication Societies (Vol. 2)-Volume - Volume 2
Performance comparison of two text marking methods
IEEE Journal on Selected Areas in Communications
Electronic marking and identification techniques to discourage document copying
IEEE Journal on Selected Areas in Communications
Interword distance changes represented by sine waves for watermarking text images
IEEE Transactions on Circuits and Systems for Video Technology
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Digital watermarking applies to variety of media including image, video, audio and text. Because of the nature of digital text, its watermarking methods are special. Moreover, these methods basically depend on the script used in the text. This paper reviews application of digital watermarking to Farsi (Persian) and similar scripts (like Arabic, Urdu and Pashto) which are substantially different from English and other western counterparts, especially in using connected alphabets. Focusing on the special characteristics of these scripts, application of common methods used for text watermarking is studied. By comparing the results, suitable methods which results in the highest payload will be presented.