Abstract
A number of research papers has been produced about reversible watermarking. Reversible watermarking is one of the important scheme of the watermarking schemes. Some security measures must be there to protect the records from unauthorized user and destruction of information. Basic idea of digital watermarking is to embed the data into the cover media to provide the security to data. The watermarking techniques satisfying these requirements called as Reversible watermarking. Ownership of the original media remains same but the best thing is original media is recovered from the watermarked media. This is the best and main feature of reversible watermarking to extract the original image as it is without any distortion. This feature is applicable in various areas such as medical as well as military images. If there is effect on the cover then it would changes the meaning of this data. The aim of this paper is to represent the purpose of reversible watermarking, some of the techniques related to reversible watermarking.
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