Reversible steganography in image : an overview and review
International Journal of Latest Trends in Engineering and Technology · 2016
Data hiding is the techniques which is used for embedding the important information/data into cover media.The covers may be audio, video, image or any other file.Data hiding is used for copyright protection, authentication, covert communication etc.Most of the data hiding processes embed the given messages into the cover media to generate the Output media by only modifying the least significant part of the cover media and, thus, make secure perceptual transparency [1].The method of embedding will usually introduce everlasting alteration to the cover and it is very difficult to rebuild the original cover.In some applications, however, such as medical, military, and law forensics degradation of the original cover is not allowed.In this type of cases, we want to assemble a method which may provide efficient results.Reversible data hiding (RDH) is one of the types of method which provide good result in the data hiding methodology.By using reversible data hiding method the original (genuine) cover can be lossless recovered.After the received message is extracted because there are many people who can temper the image so the authentication is must.There are many techniques used in image authentication [2].