Watermarking Techniques for Secure Data Transfer (A Review)

Abstract

One of most important property of digital information is that it is in principle really easy to produce and distribute unrestricted number of its copies. The actuality that an unlimited number of ideal copies of text, audio and video data can be illegally distributed and produced requires to study ways embedding copyright information and serial number in audio and video data Now a day’s internet is an necessary channel for digital assets, but it has been noticed that everybody are misusing by building illegal copies and leaking the information which creates a bad atmosphere in the field of software industry .It can be avoided by doing most outstanding efforts using digital watermarking. As we have witnessed in the past many months, the problem of protecting multimedia information becomes more essential and a lot of copyright owners are worried about protecting any illegal duplication of their data or work. Some serious work wants to be performing in order to maintain the accessibility of multimedia information but, in the meantime the industry must come up with ways to guard brain property of makers, distributors or simple owners of such data. [1] Of the many approaches possible to protect visual data, digital watermarking is probably the one that has received nearly all interest. We know that stenography and watermarking are main specifics of quick developing area in case of information hiding. Generally Watermarks are used where authentication or ownership is compulsory. Watermarks are a good way by which anyone can verify the ownership of multimedia. This paper attempts to first introduce digital watermarking as well as some of its essential notions. It is followed by describing some applications of watermarking techniques.