期刊名称：International Journal of Computer Science & Technology
印刷版ISSN：2229-4333
电子版ISSN：0976-8491
出版年度：2011
卷号：2
期号：4Ver 3
出版社：Ayushmaan Technologies
摘要：A digital watermark is a piece of information which is embedded in the digital media and hidden in the digital content in such a way that it is inseparable from its data. This piece of information known as watermark, a tag, or label into multimedia object such that the watermark can be detected or extracted later to make an assertion about the object. The object may be an image, audio, video, or text. This paper is focused on noteworthy work and techniques used for images during preliminary and principal development stage of digital watermarking by various researchers with the utility of giving a fundamental understanding of the basic principles of digital watermarking as it has evolved. This may serve as the concrete foundation and the base for understanding further advances in this technology in later years. This paper gives a summary of different innovative techniques in this emerging area.by the
关键词：Digital Watermarking; watermarking; techniques of;watermarking; role of watermarking in security.Exchange.excel
