Steganography Using Particle Swarm Optimization-A Review

Steganography is a technique of hiding the data in images.It is derived from Greek word that means “Covered”. Secret messages are embedded into the cover image to hide its existence from the hackers. While hiding the data in the image, there are two main things that we should kept in mind are maintaining the quality and security of image .There are no of points where we can hide the data in the cover image. Finding these optimal points for hiding the data is quite difficult work to do. So we require an efficient method for finding an optimal solution. For that we can use no. of optimization algorithm, Particle Swarm optimization is one of them which can be used for finding an optimal matrix for hiding the data. In this paper we are going to review some techniques of steganography for hiding the data and PSO algorithm for optimization.