Robust Source Coding Steganographic Technique Using Wavelet Transforms
Sunil Kumar Muttoo, Sushil Kumar · 2009
Information hiding has emerged as an important research field to resolve the problems in network security, quality of service control and secure communications through public and private channels. Keeping the network in a desired state is the utmost requirement of network communications. The work is being done in different fields to achieve this goal. Strganography is one of the branches of information hiding that is used to solve this problem. In this paper we present a Steganographic algorithm based on wavelet transforms. Our algorithm first uses the Best T-codes to encode the message before embedding into a cover image. The one of the advantage of this is that we can embed high capacity messages into the cover objects. The second advantage of using T-codes is self-synchronization attained at decoding stage. To achieve better imperceptibility of stego-image, we have embedded the encoded message into the cover image using wavelet fusion technique more than once, by selecting each time the wavelet block pixels using the pseudo random permutations. From the experimental results we have observed that the algorithm is imperceptible and can have 100% embedding capacity.