The Research And Implementation Of Text Watermarking Based On Word

Today digital watermarking technology research is mainly in the field of image watermarking, video and audio watermarking, and has made lot of researches, and lot of technologies has to be applied in actual software products. For the text watermark technology research, less study, less researches, and not yet some mature product applications. The text itself, its features, and format texts have structure and character features, text images also have characteristics different from the ordinary image. Using these features of text to design the watermarking algorithms. This article describes two watermarking algorithms which are based on features of text format and features of text image, and, combined with the triangular distribution and BCH coding and other methods to enhance the robustness of the algorithm.This work mainly describes three major aspects. First, describe the research status of digital watermark technology, including the content of the concept, characteristics and model of digital watermarking, a typical text watermarking algorithm status, as well as watermarking technology applications; Second, highlight the text watermark technology research text watermark principles and models, analysis of a typical format text and images of text-based watermarking algorithm, and propose a new algorithm ideas; Third, describes two watermarking algorithms, the watermarking algorithm of WORD document based on triangular wave and the watermarking algorithm of document image based on characters connectivity, highlighting the features of regular of Word document character color, character structure and connectivity, document image characteristics, and describes in detail the algorithm of embedding and extraction processes, and performance analysis of each algorithm.