Abstract: (Seminar) (APPLICATION IN VARIOUS MEDIA TYPES) In the wake of increasing copyright misuses, several new technologies are developed to preserve the authentication of information. Digital water marking is one of them. It is a technique that allows us to add hidden copyright notices, verification messages or any other useful information to the original signal.The hidden message can be a group of bits that describe something about the signal or about the genuine author of the signal. The description can be about the name, place or something related to this.Much of the research wo rk has been done in the field of digital watermarking in the recent period of time.In this paper, a brief description about various digital water marking techniques for different media types is given. Watermark insertion and watermark decoding is described as well. The watermarking techniques described for various media types include audio water marking, video water marking, image water marking and text water marking. Some of the properties and applications are also discussed.
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