A novel steganographic scheme using discrete sine transform based on energy distribution

Abstract

The research concerning the technique of hiding secret message into another information is usually named steganography. This is because the word steganography comes from the Greek root meaning Covered Writing. An image steganographic scheme is one kind of steganographic systems, where the secret message is hidden in a digital image with some hiding method [1]. Some one can then use a proper embedding procedure to embed the secret message into the cover image in such a way that it is imperceptible to a human observer. The hidden message can then be recovered using appropriate extraction procedure. The original image is called the cover image and the message-embedded image is called a stego-image.