Secured Data Transmission Using Optical Steganography with Noise

The enhancement of security system for secret data communication through secured data hiding in images on optical communication has been demonstrated experimentally and studied theoretically. The tolerance to the dispersion of Optical steganography has been studied. In recent years, the rapid growth of optical communication has become very important to secure information transmission between the sender and receiver. Therefore steganography is introduced, which is used to hide information and to communicate a secret data in an histogram enhanced image through an optical channel. The dispersion effect is deployed in order to improve the security of the stealth data. In this paper, an algorithm for optical steganography has been proposed called LSB replacement algorithm to conceal a large amount of secret data presented by secret image into the pixels of gray scale image. The dispersion effect due to the larger length of the optical channel used is reduced by increasing the PSNR. The extra dispersion at the transmitter and the receiver functions as a key pair for the optical communication. Finally the enhanced performance of this proposal in image through an optical channel will be based on the parameters such as Mean Square Error (MSE), Peak Signal to Noise Ratio (PSNR).