Steganography is a technique of concealing the secret information in a digital carrier media, so that only the authorized recipient can detect the presence of secret information. In this paper, we propose a spatial domain steganography method for embedding secret information on conditional basis using 1-Bit of Most Significant Bit (MSB). The cover image is decomposed into blocks of 8*8 matrix size. The first block of cover image is embedded with 8 bits of upper bound and lower bound values required for retrieving payload at the destination. The mean of median values and difference between consecutive pixels of each 8*8 block of cover image is determined to embed payload in 3 bits of Least Significant Bit (LSB) and 1 bit of MSB based on prefixed conditions. It is observed that the capacity and security is improved compared to the existing methods with reasonable PSNR.
The basis of the algorithm Swarm Intelligence (SI) Protocol, gives idea to difficult and intelligent characteristic through simple, non centralized and unsupervised interactions between a large sheer of autonomous swarm intelligent members. The algorithm ant colony optimization algorithm is popular due to its dynamic and adaptive nature in the real time system. It is concerened mainly with ants which find the shortest routing path to food by secreting a substance called pheromone. All the other ants follow the initial ant which took the shortest path from source to destination. When a obstacle or disturbance is faced by any other ant, further finds a new shortest path from source to destination and all other ants follow the new ant.
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