International Journal of Engineering Research and Applications (IJERA)
Security of secret information can be increased by hiding the data. Protecting the contents of the secret information from intruders is the main challenge. The old technique Steganography can be used to hide the data. In steganography the data can be hidden in the image and the authors can transmit it to the receiver. All of traditional techniques have limited information hiding capacity. They can hide only certain amounts of data in host image. This is because the principle of those techniques was either to replace a special part of the frequency components of the vessel image, or to replace all the least significant bits of a multi-valued image with the secret information.