A recent survey on data hiding techniques

Data hiding is a process of hiding information. Various methods have been developed for data hiding as of now but each have some limitations and some advantages too. According to the level and kind of application one or more data hiding methods is used. Data hiding can be done in audio, video, text, and image and in other form of information. Some data hiding techniques emphasizes on digital image security, some on robustness of digital image hiding process while other's main focus is on imperceptibility of digital image. Capacity of digital information which has to hide is also the main concern in some of the applications. The objective of some of the papers mentioned below is to achieve two or more than two parameters i.e. Security, robustness, imperceptibility and capacity but some of the parameters are trade-off which mean only one can be achieved on the cost of other. So the data hiding techniques aiming to achieve maximum requirements i.e. security, robustness, capacity, imperceptibility etc. and which can be utilized in larger domain of applications is desired. Related work for techniques used for data hiding in digital image is described in this paper.