Parity and Substitution Based Novel Image Steganography Algorithm
نویسندگان
چکیده
Steganography is that method of activity in which a secret message among covered media is transmitted in such the way that anybody cannot apprehend the presence and/or contents of the hidden message. Once the data has been embedded, the cover media may be transferred through unsecured channels. The stego-image quality is improved by using the pixel swapping and parity based embedding method. In this technique, parity of the pixel to cover the image is changed depending upon the message bit and also message bits are embedded on the basis of equality of pixel in selected block of cover. We have investigated the performance of our scheme by comparing various qualities of the stego image and the cover image. The results show that the proposed algorithm for modified steganography is highly secured with certain strength in addition to the good perceptual invisibility. Keywords— Image steganography, Spatial Domain Steganography, Security, Parity based steganography, substitution based steganography.
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