The Design And Implementation Of Text Digital Watermarking Algorithm Based On Human Vision Characteristics For Word Documents

Along with the rapid development of network technology, it has become an urgent issue to protect the information security. Cryptographic techniques can not completely meet the security needs for digital text documents which are important carriers for information to be stored and exchanged. Watermarking, serving as a key technology to protect copyrights, is now a very new research field to protect the security of text documents. In this thesis, a digital watermarking algorithm was designed and it can be applied in digital watermarking technology for text documents.This article has first analyzed the current situation of digital watermark research, then introduced the correlation theories applied in the algorithm design, and then detailed discussed the text watermarking algorithm which is designed based on the humanity visual characteristic. This article joins the watermark content security control, the inserting information confidentiality design as well as the error control technical design thought in this algorithm's foundation. Finally has realized the watermark procedure, has carried on the confirmation to the watermark procedure's function, and has carried on the analysis to the watermark performance.In the ending part, the improvement direction and the expansion mentality in future work are proposed.