Dissertation
Dissertation > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Text Processing > Character processing system

Digital Watermarking Algorithm Based on Chinese Font in the Word Document

Author KangShouQuan
Tutor JiangRongAn
School Dalian University of Technology
Course Applied Computer Technology
Keywords Digital Watermarking Chinese text Character attributes Embed
CLC TP391.12
Type Master's thesis
Year 2008
Downloads 316
Quotes 4
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With the rapid development and wide application of multimedia technology and network technology, the content of images, audio, video, and other intellectual property protection is an urgent need to solve the problem. Encryption and copy protection mechanisms can not completely solve this problem: the encryption only protect the data during transmission, while the copy protection mechanism is susceptible to damage. So a new protective pathway emerged, namely digital watermark technology. It has even been considered to be the last line of defense of intellectual property protection. The digital watermarking technology not only can be used for the protection of intellectual property rights, can also be used for authentication, comments. A lot of images and other digital watermarking method and more effective, but these methods are generally not suitable for text. Text digital watermarking technology is a cross-edge science involved password science, Graphics, Visual Sciences, Chinese information processing, image processing, communications and information security disciplines, in theory is very new research direction. Has been made in the text digital watermarking research focused algorithm in a text-based format. The most typical word shift, line shift and feature coding. But such algorithms watermark information is not loaded into the text content into the common document processing operation of the printing, format conversion, etc. it is difficult to resist. And the watermark embedded text content is based on natural language processing text watermark algorithm in computer natural language processing technology is a bottleneck. In addition, when a document contains multiple of copyright watermark information, copyright information is difficult to determine, some papers for this attack a lot of agreements, but these agreements are too complex, or effectiveness is not very good . In this paper, a multiple sets of text digital watermarking algorithm based on character attributes. The WORD document character there are some properties, the modification of the default value has a strong hidden, such characters as the object of the range in the WORD its NoProofing attribute default value only in programming in order to modify this value remains unchanged; The the characters LanguageIDFarEast property to its default value to wwdTraditionalChinese or wdChineseSingapore. By modifying specific attribute value of Chinese characters as the object can be embedded watermark information. The experiments show that this watermarking algorithm one hand, the strong concealment of watermark, the watermark capacity unlimited, on the other hand, the method has a strong anti-attack capability and both strong textual integrity detection performance.

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